1
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Ran M, Qi H, Jing T, Li J, Li W, Zhang J, Luo C, Zhu X, Gao Y. Ultrasensitive pH-switchablenitrogen doped carbon dots for MnO 4- detection and fluorescent anti-counterfeiting. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 323:124907. [PMID: 39094272 DOI: 10.1016/j.saa.2024.124907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 07/27/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Herein, high-efficiency green fluorescence nitrogen doped CDs (G-CDs) were prepared using acetaminophen and ethylenediamine as precursors. The G-CDs exhibited good anti-photobleaching, salttolerance and low cytotoxicity. Interestingly, the G-CDs revealed excellent fluorescence stability in the pH range of 6-12, however, the intensity of the G-CDs was almost completely quenched in other pH values. The MnO4- demonstrated strong fluorescence quenching capability on our G-CDs with the mechanism involving dynamic quenching caused by energy transfer. G-CDs exhibited a strong linear relationship with MnO4- concentration in the range of 0-75 μmol/L, with a low limit detection of 7.6 nmol/L. What was even more interesting was that the G-CDs displayed bright green solid-state fluorescence, and exhibited potential application in anti-counterfeiting.
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Affiliation(s)
- Maoxia Ran
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Haiyan Qi
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China.
| | - Tao Jing
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Jun Li
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Wenbo Li
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Jiayu Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Chao Luo
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Xiaochen Zhu
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
| | - Yang Gao
- College of Chemistry and Chemical Engineering, Qiqihar University, No. 42, Wenhua Street, Qiqihar 161006, China
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2
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Hong Y, Nie Z, Tian X, Sun J, Zhou Q, Liang W, Chen S, Huang J, Tan K, Dong L. Rare-earth-free up and down-conversion dual-emission carbon dots for Cu 2+ sensing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 323:124920. [PMID: 39111030 DOI: 10.1016/j.saa.2024.124920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 07/17/2024] [Accepted: 07/30/2024] [Indexed: 08/27/2024]
Abstract
In this work, up- and down-conversion dual-emission CDs without rare-earth (UD D-CDs) were synthesized using RhB and 1,4-Diaminoanthraquinone as precursors. The synthesized UD D-CDs exhibited dual emissions at 496 and 580 nm under 260 and 865 nm excitation, respectively. The fluorescence emission mechanism, including contributions from carbon nuclei, surface states, molecular states, and internal defect states, was discussed through the separation and purification of UD D-CDs. Based on the interaction between UD D-CDs and copper ions (Cu2+), a dual-mode ratio fluorescence probe was developed to detect and quantify Cu2+. The up-conversion ratio fluorescent probe shows a linear range of 0.0500-15.0 μM, with a detection limit as low as 2.76 nM. This method has been successfully applied to detecting Cu2+ in human serum and has potential applications in biochemical analysis and biological imaging. The successful preparation of up-conversion fluorescent carbon dots without rare earth elements and the ability to perform low-damage detection in high-background biological samples provide a new approach to constructing non-rare earth up-conversion probes.
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Affiliation(s)
- Yushuang Hong
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhengpei Nie
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xuelian Tian
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jingfang Sun
- School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China
| | - Qiuju Zhou
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Wenbin Liang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shihong Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Jin Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China; School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Bintuan, Shihezi University, Shihezi 832003, PR China.
| | - Kejun Tan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, and Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Lin Dong
- School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China
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3
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Li H, Hu Y, Lin Z, Yan X, Sun C, Yao D. Carbon dots-based stimuli-responsive hydrogel for in-situ detection of thiram on fruits and vegetables. Food Chem 2024; 460:140405. [PMID: 39053272 DOI: 10.1016/j.foodchem.2024.140405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 06/23/2024] [Accepted: 07/07/2024] [Indexed: 07/27/2024]
Abstract
Stimuli-responsive hydrogel possesses a strong loading capacity to embed luminescent indicators for constructing food safety sensors, which are suitable for field application. In this work, a fluorescent hydrogel sensor was fabricated by incorporating Ag+-modified carbon dots (CDs-Ag+) into a sodium alginate (SA) hydrogel for in-situ detection of thiram. The fluorescence of CDs was quenched due to the combined effects of electrostatic adsorption and electron transfer between Ag+ and CDs. The formation of an AgS bond between thiram and Ag+ facilitates the release of CDs, causing subsequently fluorescence recovery. Combined with smartphone and analysis software, the fluorescence color change of the hydrogel sensor was converted into data information for quantitative detection of thiram. Such a sample-to-result step is completed within 10 min. Notably, the in-situ detection experiment of thiram in fruit and vegetable samples confirmed the practical application of the hydrogel sensor. Therefore, the hydrogel sensor provides a new research direction for the in-situ detection of pesticide residues in the monitoring of food safety.
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Affiliation(s)
- Hongxia Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China; College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Yanan Hu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Zhen Lin
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Xu Yan
- College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
| | - Chunyan Sun
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, China
| | - Dong Yao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
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4
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Zhang C, Wu G. Recent advances in fluorescent probes for ATP imaging. Talanta 2024; 279:126622. [PMID: 39089081 DOI: 10.1016/j.talanta.2024.126622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/22/2024] [Accepted: 07/25/2024] [Indexed: 08/03/2024]
Abstract
Adenosine-5'-triphosphate (ATP) is a critical biological molecule that functions as the primary energy currency within cells. ATP synthesis occurs in the mitochondria, and variations in its concentration can significantly influence mitochondrial and cellular performance. Prior studies have established a link between ATP levels and a variety of diseases, such as cancer, neurodegenerative conditions, ischemia, and hypoglycemia. Consequently, researchers have developed many fluorescent probes for ATP detection, recognizing the importance of monitoring intracellular ATP levels to understand cellular processes. These probes have been effectively utilized for visualizing ATP in living cells and biological samples. In this comprehensive review, we categorize fluorescent sensors developed in the last five years for ATP detection. We base our classification on fluorophores, structure, multi-response channels, and application. We also evaluate the challenges and potential for advancing new generations of fluorescence imaging probes for monitoring ATP in living cells. We hope this summary motivates researchers to design innovative and effective probes tailored to ATP sensing. We foresee imminent progress in the development of highly sophisticated ATP probes.
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Affiliation(s)
- Chen Zhang
- Department of Central Laboratory and Mitochondrial Medicine Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, 266035, China
| | - Guanzhao Wu
- Department of Central Laboratory and Mitochondrial Medicine Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, 266035, China.
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5
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Xu J, Yang W, Liu Y. An innovative carbon dots polarity probe based on intramolecular charge-transfer for visual monitoring of the total polar materials in frying oil. Food Chem 2024; 455:139770. [PMID: 38823139 DOI: 10.1016/j.foodchem.2024.139770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/09/2024] [Accepted: 05/19/2024] [Indexed: 06/03/2024]
Abstract
The presence of Total Polar Materials (TPM) in edible oils is a crucial indicator for assessing oil quality. It is of paramount importance to develop a rapid and dependable technique for monitoring polarity in frying oil. Sensitive polarity responsive fluorescence carbon dots (F-CDs) were synthesized by using p-phenylenediamine as precursors and 2-formylphenylboronic acid pinacol ester (2-FAPE) as a post-modifier. The construction of the fluorescent probe F-CDs involved a strong intramolecular charge-transfer (ICT) mechanism, with 2-FAPE serving as the electron-withdrawing fluorophore and the π-conjugated structure acting as a potent electron-donating group. A strong linear relationship was observed between the emission wavelength and the TPM value of frying oil within a range of 11% to 30%. Notably, the fluorescence color of the probe transitioned from blue to yellow under UV light at 365 nm as the TMP value increased. This study expands the range of sensing applications for CDs in food safety.
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Affiliation(s)
- Jiangbin Xu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, National Engineering Research Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China
| | - Wei Yang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, National Engineering Research Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China.
| | - Yuanfa Liu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, National Engineering Research Center for Functional Food, National Engineering Laboratory for Cereal Fermentation Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, People's Republic of China; Future Food (Bai Ma) Research Institute, 111 Baima Road, Nanjing 211200, Jiangsu, People's Republic of China.
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6
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Zhang Y, Yang F, Liu C, Hou D, Zheng Y, Gao H, Sun H, Lin X. Solid-State Fluorescent Carbon Dots with Hydrophobic Modification Induced Red Emission for White Light-Emitting Diodes. Inorg Chem 2024. [PMID: 39390802 DOI: 10.1021/acs.inorgchem.4c03150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2024]
Abstract
Herein, we developed red solid-state fluorescent carbon dots (SSF-CDs) through a one-step solvothermal method, utilizing acetone as the carbonization solvent. Optical and structural characterization revealed that the sp2 domains in the core of the R-CDs were consistently interrupted and that the oxygen-containing groups on the surface were replaced by alkyl groups. This substitution mitigates excessive π-π interactions, thereby preventing quenching of fluorescence in the solid state. Adjusting the molar ratio of citric acid (CA) and urea yielded solid fluorescent carbon dots (CDs) with panchromatic luminescence, indicating enhanced π-π interactions and more pronounced red shifts in the emission peaks. Furthermore, we found that this strategy is applicable to other carbon sources, including phenylenediamine, salicylic acid, and lignin. This research presents an innovative strategy for the fabrication of solid-state luminescent CDs.
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Affiliation(s)
- Yu Zhang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Fulin Yang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Yunwu Zheng
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Hui Gao
- Yunnan University of Chinese Medicine, 1076, Yuhua Road, University City of Chenggong, 650500 Kunming, Yunnan Province, China
| | - Hao Sun
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
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7
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Guo T, Sun H, Liu C, Yang F, Hou D, Zheng Y, Gao H, Shi R, He X, Lin X. Twisted Structure Induced Solid-State Fluorescence and Room-Temperature Phosphorescence from Furan-Based Carbon Dots. Inorg Chem 2024. [PMID: 39385452 DOI: 10.1021/acs.inorgchem.4c03445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2024]
Abstract
Boron doping can effectively induce solid-state fluorescence (SSF) in carbon dots (CDs); however, research on the intrinsic mechanism underlying this phenomenon is lacking. Herein, a design strategy for boron-doped furan-based CDs is proposed, CDs with aggregation-induced emission (AIE) properties are synthesized, and the mechanism by which boron atom dopants induces SSF and room-temperature phosphorescence (RTP) is elucidated. The morphology and structural characterization of the CDs indicate that boron doping leads to structural twisting of the CDs. The AIE phenomenon of CDs arises from the inhibition of the twisted structure motions and a reduction in the nonradiative relaxation rate during the aggregation process. In addition, CDs with twisted structures exhibit a smaller overlap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), effectively reducing the singlet-triplet splitting energy (ΔEST). CDs embedded in microcrystalline cellulose (MCC) exhibit green RTP because the nonradiative transitions are suppressed, and the excited triplet species remain stable. For the first time, this study reveals the structure-activity relationship between the twisted structure and optical properties of CDs, providing a new approach for the preparation of solid-state light-emitting CDs.
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Affiliation(s)
- Tingxuan Guo
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
- Yunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming, Yunnan Province 650224, China
| | - Hao Sun
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
- Yunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming, Yunnan Province 650224, China
| | - Fulin Yang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
| | - Yunwu Zheng
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
| | - Hui Gao
- Yunnan University of Chinese Medicine, University City of Chenggong, 1076, Yuhua Road, Kunming, Yunnan Province 650500, China
| | - Rui Shi
- Yunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming, Yunnan Province 650224, China
| | - Xiahong He
- Yunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming, Yunnan Province 650224, China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, China
- Yunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming, Yunnan Province 650224, China
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8
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Kasif M, Alarifi A, Afzal M, Thirugnanasambandam A. N, S-codoped carbon dots for antioxidants and their nanovehicle potential as molecular cargoes. RSC Adv 2024; 14:32041-32052. [PMID: 39391617 PMCID: PMC11465998 DOI: 10.1039/d4ra05994h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2024] [Accepted: 10/03/2024] [Indexed: 10/12/2024] Open
Abstract
This work demonstrates the facile one step hydrothermal synthesis of carbon dots doped with nitrogen and sulfur (SCDs). The carbon dots have various uses, including their use as molecular payloads for antioxidant and drug delivery purposes. The sizes of the CDs were determined using transmission electron microscopy (TEM), which revealed an average size of 4.2 nm. The successful sulfur doping was confirmed by Fourier-transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS), which identified typical functional groups and elemental composition. UV-vis and photoluminescence (PL) spectroscopy revealed a wide absorption peak at 280 nm and a pronounced blue emission at 440 nm. Colloidal stability was confirmed by dynamic light scattering (DLS) and zeta potential analysis. The antioxidant characteristics were evaluated through the use of electron paramagnetic resonance (EPR) spectroscopy, which confirmed a notable ability to scavenge radicals which revealed more than 80% radical scavenging capability. The SCDs also showed nontoxic behavior against living cells. The findings emphasize the potential of SCDs in the fields of bioimaging, drug delivery, and as potent antioxidant agents.
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Affiliation(s)
- Md Kasif
- School of Energy Science and Engineering, Indian Institute of Technology Guwahati Guwahati 781039 India
| | - Abdullah Alarifi
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Mohd Afzal
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Arunkumar Thirugnanasambandam
- Centre for Sustainable Materials and Surface Metamorphosis, Chennai Institute of Technology Chennai Tamilnadu 600069 India
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9
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Yang SQ, Jia BZ, Liu J, Wang H, Lei HT, Luo L, Xu ZL. Nanozyme-mediated ratiometric fluorescence hydrogel for on-site detection of sulfite in food. Food Chem 2024; 463:141525. [PMID: 39388869 DOI: 10.1016/j.foodchem.2024.141525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2024] [Revised: 09/28/2024] [Accepted: 10/01/2024] [Indexed: 10/12/2024]
Abstract
In this work, a ratiometric fluorescence hydrogel nanosensor was developed by integrating a composite consisting of o-phenylenediamine (OPD), manganese dioxide nanoflakes (MnO2 NFs), and N-doped carbon dots (N-CDs) into an agarose hydrogel for sulfite detection. MnO2 NFs demonstrated intense oxidase-like activity, facilitating the conversion of non-fluorescent OPD into yellow-emissive 2,3-diaminophenazine (DAP). As a result, a significant emission peak belongs to DAP, alongside the fluorescence quenching of N-CDs through FRET. Upon interaction with sulfite, MnO2 NFs lost their oxidase-like function. This process decreased the fluorescence of DAP and restored the blue fluorescence of N-CDs, producing a typical ratiometric response, ranging from 3 nM ∼ 400 μM, with a detection limit (LOD) of 3.79 nM. Employing a smartphone, the fluorescence color change demonstrated by the hydrogel sensor was translated into quantitative data (LOD: 8.44 nM). This hydrogel sensor offers an affordable, portable, and user-friendly solution for sulfite detection and food safety monitoring.
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Affiliation(s)
- Si-Qi Yang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Bao-Zhu Jia
- College of Biology and Food Engineering, Guangdong University of Education, Guangzhou 510303, China; School of Health Sciences Research, Research Institute for Health Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jie Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou Dublin International College of Life Sciences and Technology, College of Food Science, South China Agricultural University, Guangzhou 510642, China
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10
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Nunes PJ, Pereira RFP, Nunes SC, Correia SFH, Fu L, Ferreira RAS, Fernandes M, Bermudez VDZ. POE-Mediated Tunable Quantum Yield of Carbon Dots-Derived From Agapanthus Africanus (L.) Hoffmann Leaves. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404717. [PMID: 39359048 DOI: 10.1002/smll.202404717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 09/17/2024] [Indexed: 10/04/2024]
Abstract
The green synthesis of carbon dots (CDs) from natural sources is a challenging goal. Herein CDs are produced from Agapanthus africanus (L.) Hoffmann leaves by carbonization at 200/300 °C for 2/3 h. Samples are named CZ-X-Y, where Z, X, and Y represent carbonization, temperature, and time, respectively. CZ-200-3, CZ-300-2, and CZ-300-3 CDs have average sizes of 3.7 ± 0.7, 5.3 ± 1.2, and 5.1 ± 1.6 nm, respectively. Their surface, devoid of chlorophyll, contains ─OH, ─C═O, and ─C(═O)OH groups and sylvite. Isolated CZ-300-3 emits at 400 nm (excited at 260 nm) and exhibits an emission quantum yield (QY) value of 2 ± 1%. Embedding in the d-U(600)/d-(900) di-ureasil matrices resulted in transparent films with emission intensity maxima at 420/450 nm (360 nm), and QY values of 7 ± 1/16 ± 2% (400 nm). The enhancement of the QY value of the bare CDs agrees with an efficient passivation provided by the hybrid host. The hydrophilic CZ-300-3 CDs also exerted a marked surface modifying role, changing the surface roughness and the wettability of the hybrid films.
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Affiliation(s)
- Paulo J Nunes
- CQ-VR, University of Trás-os-Montes e Alto Douro, Vila Real, 5000-801, Portugal
| | - Rui F P Pereira
- Centre of Chemistry, University of Minho, Braga, 4710-057, Portugal
| | - S C Nunes
- Chemistry Department and FibEnTech - Fiber Materials and Environmental Technologies, University of Beira Interior, Covilhã, 6201-001, Portugal
| | - Sandra F H Correia
- Instituto de Telecomunicações and University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | - Lianshe Fu
- Physics Department and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Rute A S Ferreira
- Physics Department and CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Mariana Fernandes
- CQ-VR, University of Trás-os-Montes e Alto Douro, Vila Real, 5000-801, Portugal
- Chemistry Department, University of Trás-os-Montes e Alto Douro, Vila Real, 5000-801, Portugal
| | - Verónica de Zea Bermudez
- CQ-VR, University of Trás-os-Montes e Alto Douro, Vila Real, 5000-801, Portugal
- Chemistry Department, University of Trás-os-Montes e Alto Douro, Vila Real, 5000-801, Portugal
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11
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Antonio Zingale G, Pandino I, Tuccitto N, Distefano A, Calì F, Calcagno D, Grasso G. Carbon dots fluorescence can be used to distinguish isobaric peptide and to monitor protein oligomerization dynamics. Methods 2024; 230:1-8. [PMID: 39038505 DOI: 10.1016/j.ymeth.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 07/24/2024] Open
Abstract
Carbon dots (CD) are widely investigated particles with interesting fluorescent properties which are reported to be used for various purposes, as they are biocompatible, resistant to photobleaching and with tuneable properties depending on the specific CD surface chemistry. In this work, we report on the possibility to use opportunely designed CD to distinguish among isobaric peptides almost undistinguishable by mass spectrometry, as well as to monitor protein aggregation phenomena. Particularly, cell-penetrating peptides containing the carnosine moiety at different positions in the peptide chain produce sequence specific fluorescent signals. Analogously, different insulin oligomerization states can also be distinguished by the newly proposed experimental approach. The latter is here described in details and can be potentially applied to any kind of peptide or protein.
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Affiliation(s)
| | | | - Nunzio Tuccitto
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Alessia Distefano
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | - Federico Calì
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy
| | | | - Giuseppe Grasso
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125, Catania, Italy.
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12
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Zhang S, Shen L, Xu P, Yang J, Song P, Li L, Li Y, Zhang Y, Wu S. Advancements of carbon dots: From the perspective of medicinal chemistry. Eur J Med Chem 2024; 280:116931. [PMID: 39369486 DOI: 10.1016/j.ejmech.2024.116931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2024] [Revised: 09/29/2024] [Accepted: 09/30/2024] [Indexed: 10/08/2024]
Abstract
Carbon dots (CDs) exhibit great potential in medicinal chemistry due to its excellent optical properties, biocompatibility and scalability, which have attracted significant interest. Based on their specific synthesis and modification, this review provided an overview of the evolution of the synthesis of CDs and reviewed the discovery and development of their optical properties. This review examines recent advances of CDs in medicinal chemistry, with a particular focus on the use of CDs as drugs and carriers for photodynamic and photothermal therapies in the field of neurological disorders, cancer, bacterial, viral, and further in combination with imaging for diagnostic and therapeutic integration. Finally, this review addresses the challenges and limitations of CDs in medicinal chemistry. This review provides a comprehensive overview of the development process of CDs and their applications in various aspects of medicinal chemistry, thereby offers insights to the development of CDs in the field of medicinal chemistry.
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Affiliation(s)
- Shengtao Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China; Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710069, PR China
| | - Li Shen
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, 311402, Hangzhou, PR China
| | - Pengyue Xu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China
| | - Jiali Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China
| | - Pengliang Song
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China
| | - Lifang Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China
| | - Yan Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710069, PR China
| | - Yongmin Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710069, PR China; Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR, 8232, 4 Place Jussieu, 75005, Paris, France
| | - Shaoping Wu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Biomedicine Key Laboratory of Shaanxi Province, Northwest University, 229 Taibai Road, Xi'an, Shaanxi, 710069, PR China.
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13
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Wang Y, Qin Y, Wang F, Zhang H, Huangfu C, Shi Y, Chen X, Wang Z, Tian W, Feng L. The Synthesis of Functionalized Carbonized Polymer Dots via Reversible Assembly of Oligomers for Anti-Counterfeiting, Catalysis, and Gas storage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2405043. [PMID: 39120542 DOI: 10.1002/advs.202405043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 07/23/2024] [Indexed: 08/10/2024]
Abstract
Carbonized polymer dots (CPDs) have shown exceptional potential across a wide range of applications. However, their practical utilization is significantly greatly impeded by the lack of precise control over their structures and functionalities. Consequently, the development of controlled synthesis strategies for CPDs with well-defined structures and tailored functionalities remains a critical challenge in the field. Here, the controlled synthesis of functional CPDs with reversible assembly properties via airflow-assisted melt polymerization, followed by a one-step post-synthetic doping strategy, is reported. This synthetic approach achieves high product yield, uniform and tunable structures, as well as customized functionalities including solid-state emission, enhanced catalytic performance (3.5-45 times higher than conventional methods), and selective gas storage in the resulting CPDs. The ability to tailor the properties of CPDs through controlled synthesis opens up new opportunities for their practical application in photocatalysis and gas storage.
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Affiliation(s)
- Yu Wang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Yingxi Qin
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Fengya Wang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Hongyu Zhang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Changxin Huangfu
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Yushu Shi
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Xize Chen
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Zhenming Wang
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Wenming Tian
- State Key Laboratory of Molecular Reaction Dynamics and the Dynamic Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Liang Feng
- Department of Instrumentation and Analytical Chemistry, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
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14
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Chen Y, Xu L, Zhao S, Miao C, Chen Y, Wang Z, Feng F, Lin M, Weng S. One-pot hydrothermal synthesis of silicon, nitrogen co-doped carbon dots for enhancing enzyme activity of acid phosphatase (ACP) to dopamine and for cell imaging. Talanta 2024; 278:126451. [PMID: 38917549 DOI: 10.1016/j.talanta.2024.126451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 06/06/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024]
Abstract
Developing water-soluble nanomaterials with high photoluminescence emission and high yield for biological analysis and imaging is urgently needed. Herein, water-soluble blue emitting silicon and nitrogen co-doped carbon dots (abbreviated as Si-CDs) of a high photoluminescence quantum yield of 80 % were effectively prepared with high yield rate (59.1 %) via one-step hydrothermal treatment of N-[3-(trimethoxysilyl)propyl]ethylenediamine (DAMO) and trans-aconitic acid. Furthermore, the Si-CDs demonstrate environmental robustness, photo-stability and biocompatibility. Given the importance of the potentially abnormal levels of acid phosphatase (ACP) in cancer diagnosis, developing a reliable and sensitive ACP measurement method is of significance for clinical research. The Si-CDs unexpectedly promote the catalytic oxidation of ACP on dopamine (DA) to polydopamine under acidic conditions through the produced reactive oxygen species (ROS). Correspondingly, a fluorescence response strategy using Si-CDs as the dual functions of probes and promoting enzyme activity of ACP on catalyzing DA was constructed to sensitively determine ACP. The quantitative analysis of ACP displayed a linear range of 0.1-60 U/L with a detection limit of 0.056 U/L. The accurate detection of ACP was successfully achieved in human serum through recovery tests. As a satisfactory fluorescent probe, Si-CDs were successfully applied to fluorescent imaging of A549 cells in cytoplasmic with long-term and safe staining. The Si-CDs have the dual properties of outstanding fluorescent probes and auxiliary oxidase activity, indicating their great potential in multifunctional applications.
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Affiliation(s)
- Yuanting Chen
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China
| | - Linlin Xu
- Department of Pharmacy, Maternal and Child Health Hospital of Fuzhou Second General Hospital, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Sheng Zhao
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China
| | - Chenfang Miao
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Yuyuan Chen
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Zhenzhen Wang
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China
| | - Feng Feng
- Department of Pharmacy, Fujian Provincial Governmental Hospital, Affiliated Hospital of Fujian Health College, Fuzhou, 350003, China.
| | - Mingrui Lin
- Department of Pharmacy, Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, China.
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis, School of Pharmacy, Fujian Medical University, Fuzhou, 350122, China.
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15
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Wang L, Liu G, Wang M, Song Y, Jing Q, Zhao H. Vacuum-Boosting Precise Synthetic Control of Highly Bright Solid-State Carbon Quantum Dots Enables Efficient Light Emitting Diodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401812. [PMID: 38816772 DOI: 10.1002/smll.202401812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/16/2024] [Indexed: 06/01/2024]
Abstract
Carbon quantum dots (C-dots) have emerged as efficient fluorescent materials for solid-state lighting devices. However, it is still a challenge to obtain highly bright solid-state C-dots because of the aggregation caused quenching. Compared to the encapsulation of as-prepared C-dots in matrices, one-step preparation of C-dots/matrix complex is a good method to obtain highly bright solid-state C-dots, which is still quite limited. Here, an efficient and controllable vacuum-boosting gradient heating approach is demonstrated for in situ synthesis of a stable and efficient C-dots/matrix complex. The addition of boric acid strongly bonded with urea, promoting the selectivity of the reaction between citric acid and urea. Benefiting from the high reaction selectivity and spatial-confinement growth of C-dots in porous matrices, in situ synthesize C-dots bonded can synthesized dominantly with a crosslinked octa-cyclic compound, biuret and cyanuric acid (triuret). The obtained C-dots/matrix complex exhibited bright green emission with a quantum yield as high as 90% and excellent thermal and photo stability. As a proof-of-concept, the as-prepared C-dots are used for the fabrication of white light-emitting diodes (LEDs) with a color rendering index of 84 and luminous efficiency of 88.14 lm W-1, showing great potential for applications in LEDs.
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Affiliation(s)
- Lihua Wang
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Guiju Liu
- College of Physics, Yantai University, Yantai, 264005, P. R. China
| | - Maorong Wang
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Yang Song
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Qiang Jing
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
| | - Haiguang Zhao
- College of Physics, University Industry Joint Center for Ocean Observation and Broadband Communication, College of Textiles and Clothes, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, P. R. China
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16
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Thomas SA, Alharthi NS, Petersen RJ, Aldrees A, Tani S, Anderson KJ, Granlie J, Pringle TA, Payne SA, Choi Y, Kilin DS, Hobbie EK. Colloidal 2D Layered SiC Quantum Dots from a Liquid Precursor: Surface Passivation, Bright Photoluminescence, and Planar Self-Assembly. ACS NANO 2024; 18:26848-26857. [PMID: 39288450 DOI: 10.1021/acsnano.4c08052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
We report the bottom-up synthesis of colloidal two-dimensional (2D) layered silicon carbide (SiC) quantum dots with a cubic structure, lateral size of 5-10 nm, ⟨110⟩ exfoliation to few atomic layers, and surface passivation with 1-dodecene. Samples shielded from oxygen and plasma-annealed for purity exhibit narrow blue photoluminescence (PL) with quantum yields (QYs) over 60% in exceptional cases, while unshielded nanocrystals (NCs) exhibit broad blue/green/white PL with 10-15% QY. The latter scenario is attributed to excess surface carbon and oxygen accrued during synthesis and processing, with size separation through ultracentrifugation revealing size-dependent impurity emission. In contrast, the shape of the bright narrow blue PL shows little variation with NC size, while in both scenarios, the maximum QY occurs near four atomic layers. When dried under heat, the disk-like NC suspensions are observed to aggregate into microscale domains, with further self-assembly into planar superlattice domains with common crystalline orientation. The results are compared with photophysical simulations and bring clarity to the broad emission commonly reported for top-down approaches, while inspiring bottom-up schemes directed at improved material quality.
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Affiliation(s)
- Salim A Thomas
- Materials & Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Naif S Alharthi
- Materials & Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Reed J Petersen
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Ahmed Aldrees
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sakurako Tani
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Kenneth J Anderson
- Department of Chemistry & Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Joseph Granlie
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Todd A Pringle
- Materials & Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Scott A Payne
- Materials & Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Yongki Choi
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Dmitri S Kilin
- Department of Chemistry & Biochemistry, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Erik K Hobbie
- Materials & Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
- Department of Physics, North Dakota State University, Fargo, North Dakota 58108, United States
- Department of Coatings & Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, United States
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17
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Yadav J, Pushpendra, Samal SK, Achary SN, Naidu BS. Sr 2BiF 7: A New Bismuth-Based Host Material for Lanthanide Ions Doping: Synthesis, Downshifting, and Upconversion Luminescence Properties for Multimode Anticounterfeiting. ACS APPLIED MATERIALS & INTERFACES 2024; 16:51028-51036. [PMID: 39262382 DOI: 10.1021/acsami.4c08301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
A new bismuth-based host material, i.e., Sr2BiF7, is explored in this work. Undoped and lanthanide ion-doped Sr2BiF7 nanomaterials are prepared using a simple coprecipitation technique at 120 °C. The undoped nanomaterials exhibit a blue color under 365 nm excitation. The downshifting and upconversion photoluminescent properties of Er and Yb codoped Sr2BiF7 nanomaterials are investigated. The optimum up-conversion luminescence is produced by nanomaterials doped with 5% Yb3+ and 0.2% Er3+. These nanomaterials show blue and magenta colors upon excitation at 365 and 395 nm wavelengths, respectively. Sr2BiF7 material doped with Er3+ shows green emission, while the codoped Er3+, Yb3+ nanomaterials exhibit an orange-red color under 980 nm light. A specific amount of polyvinyl chloride (PVC) is used for producing luminescent ink with these nanoparticles for multimode anticounterfeiting applications. The letters and patterns written with luminescent ink based on Er3+, Yb3+ doped nanomaterials show blue, magenta, and orange-red colors under 365, 395, and 980 nm light, respectively. These results establish that this material can be effectively used as a multimode photoluminescent covert tag to combat counterfeiting.
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Affiliation(s)
- Jyoti Yadav
- Energy and Environment Unit, Institute of Nano Science and Technology (INST), Sector-81, Knowledge City, Mohali, Punjab 140306, India
| | - Pushpendra
- Energy and Environment Unit, Institute of Nano Science and Technology (INST), Sector-81, Knowledge City, Mohali, Punjab 140306, India
| | - Satish Kumar Samal
- Energy and Environment Unit, Institute of Nano Science and Technology (INST), Sector-81, Knowledge City, Mohali, Punjab 140306, India
| | - Srungarpu N Achary
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai, Trombay 400085, India
| | - Boddu S Naidu
- Energy and Environment Unit, Institute of Nano Science and Technology (INST), Sector-81, Knowledge City, Mohali, Punjab 140306, India
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18
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Hussain A, Alajmi MF, Ganguly S. Sustainable Doped Carbon Dots as Antioxidant and Nanocarrier for Therapeutic Cargos. J Fluoresc 2024:10.1007/s10895-024-03940-1. [PMID: 39320634 DOI: 10.1007/s10895-024-03940-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2024] [Accepted: 09/09/2024] [Indexed: 09/26/2024]
Abstract
Aside from their fluorescence sensing capabilities, carbon dots doped with heteroatoms show tremendous promise as nanocarriers for medicinal compounds and as antioxidants. We present a method for producing carbon dots from chitosan and lemon extract (CLCDs) using a one-step hydrothermal coupling synthesis. The as-synthesized CLCDs exhibited remarkable colloidal stability, antioxidant behavior, cytocompatibility, and nanocarrier for drug molecules. The nanoparticles was analyzed using advanced techniques such as Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and transmission electron microscopy (TEM) to determine the precise composition of their surface. In order to evaluate the drug transport properties of CLCDs, their surfaces were further modified with anticancer drug compounds. The drug release behavior was studied against physiologically simulated fluids and at different pH environments showing better delayed response in acidic condition. The plausible mechanistic pathways have been confirmed after fitting the results into Higuchi, Weibull and Korsmeyer-Peppas models. The goodness of fit was more than 95% for the Korsmeyer-Peppas model, with the release mechanism supported by anomalous transport. Moreover, the radical scavenging activity of CLCDs was also confirmed at low levels (1 mg/mL) which could be inferred > 85% efficacy against mostly employed testing agents (DPPH, ABTS, and hydroxyl radicals). Thus, the prepared CLCDs could be used as suitable nanovector in payload delivery with prominent antioxidant activity and low toxicity against living cell lines.
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Affiliation(s)
- Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh, 11451, Saudi Arabia.
| | - Mohamed Fahad Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, PO Box 2457, Riyadh, 11451, Saudi Arabia
| | - S Ganguly
- Department of Chemistry, University of Waterloo, Waterloo, ON, Canada.
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19
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Xu L, Zhang H, Cui Y, Wang W, Liu P, He T, Fang F, Hao J, Chen W, Li Y, Cheng J. Magnetic modulation on chiroptical activities of nematically assembled carbon dots. J Colloid Interface Sci 2024; 678:409-416. [PMID: 39303559 DOI: 10.1016/j.jcis.2024.09.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Revised: 09/08/2024] [Accepted: 09/15/2024] [Indexed: 09/22/2024]
Abstract
Effectively harnessing the assembly of achiral carbon dots into a chiral manner is a prominent step for applying carbon dots into the area of stereoselective optoelectronics and theranostics. Herein, magnetic-modulated and circularly polarized luminescence (CPL)-active photonic thin films were presented in this article via co-assembly and magnetic-mediation strategy of cellulose nanocrystals, carbon dots and magnetic nanoparticles. The photonic bandgap of the composite films is modulated via interfacial interactions between the building blocks, and more efficiently via external magnetic field which can further enhance the selective reflection of the films with a maximum CPL anisotropic factor as high as -0.92, indicating the optimized condition for achieving CPL signals is basically when the photonic bandgap (PBG) are close to the emission peaks of nanocomposite films, which may essentially facilitate the selective reflection effect and leads to the output of opposite CPL signals. Such strategy would inevitably boost the development of carbon dots based chiral devices and reagents into the realm of chirality-related biological issues and next generation chiral optoelectronics.
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Affiliation(s)
- Lihai Xu
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China; College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
| | - Huaifang Zhang
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Yanyan Cui
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Weichao Wang
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Peizhao Liu
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Tingchao He
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Fan Fang
- College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
| | - Junjie Hao
- College of Integrated Circuits and Optoelectronic Chips, Shenzhen Technology University, Shenzhen 518118, China.
| | - Wei Chen
- College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China.
| | - Yiwen Li
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.
| | - Jiaji Cheng
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.
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20
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Shan D, Yu H, Yang Z, Li H, Jia R, Zhang Y. Nitrogen-doped carbon quantum dots (NCQDs) detected to mercury ions in food monitoring. Food Chem 2024; 463:141308. [PMID: 39298854 DOI: 10.1016/j.foodchem.2024.141308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 09/02/2024] [Accepted: 09/13/2024] [Indexed: 09/22/2024]
Abstract
Using 2,3-diaminopyridine and citric acid as precursors, blue fluorescent nitrogen-doped carbon quantum dots (NCQDs) with a narrow size distribution (∼7.2 nm) were prepared and applied in the following assay for mercury ion detection at a weight ratio of 2,3-diaminopyridine:citric acid = 1:1 (0.2 g: 0.2 g, 20 mL for H2O), 220 °C, and 10 h. NCQDs was characterized by TEM, FT-IR, XPS, UV-Vis and EDS, and the prepared NCQDs display excitation-independent behavior due to less surface defects and uniform size. The optimal excitation and emission wavelengths of the NCQDs were 380 nm and 430 nm, respectively. Interestingly, the fluorescence of the NCQDs could be rapidly and selectively quenched by Hg2+ within 9 min at room temperature without further modification. Under optimal conditions, the limit of detection (LOD) was measured to be at the nanomolar level (42.4 nmol/L) with a linear range of 0-5.0 μmol/L, and fluorescence analysis of NCQDs was successfully used for the qualitative and quantitative analysis of mercury ions in food samples. Furthermore, our results revealed that fluorescence quenching occurred under the common fluences of the inner filter effect, and the static quenching effect was authenticated in the process in which Hg2+ coordinates with the NCQDs to form nonfluorescent complexes.
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Affiliation(s)
- Di Shan
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China
| | - Huichuan Yu
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China
| | - Zhichao Yang
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China
| | - Hongda Li
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China.
| | - Rulin Jia
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China
| | - Yue Zhang
- School of Forensic Science and Technology, Criminal Investigation Police University of China, Liaoning, Shenyang 110035, China
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21
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Dai S, Yao L, Liu L, Cui J, Su Z, Zhao A, Yang P. Carbon dots-supported Zn single atom nanozymes for the catalytic therapy of diabetic wounds. Acta Biomater 2024; 186:454-469. [PMID: 39098446 DOI: 10.1016/j.actbio.2024.07.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/24/2024] [Accepted: 07/28/2024] [Indexed: 08/06/2024]
Abstract
Diabetic wound treatment continues to be a significant clinical issue due to higher levels of oxidative stress, susceptibility to bacterial infections, and chronic inflammatory responses during healing. We rationally developed and synthesized an ultra-small carbon dots (C-dots) loaded with zinc single-atom nanozyme (Zn/C-dots) with the aim of promoting wounds healing by nanocatalytic treatment, especially targeting its complex pathological microenvironment. Zinc single atoms and C-dots form a dual catalytic system with higher enzymatic activity. Furthermore, the Zn/C-dots nanozyme effectively enters cells, accumulates at mitochondria, and removes excess ROS, protecting cells from oxidative stress damage and limiting the release of pro-inflammatory cytokines, hence reducing inflammation. Zinc can synergistically increase the antibacterial action of C-dots (the effective antibacterial rate of 100 µg/mL Zn/C-dots was above 90 %). Unlike traditional C-dots, Zn/C-dots can cause endothelial cell migration and the formation of new blood vessels. In vitro cytotoxicity, blood compatibility, and in vivo toxicity studies of Zn/C-dots show that they are biocompatible. We subsequently utilized the Zn/C-dots nanozymes to treat diabetic rats' chronic wounds for external use, combining them with ROS-responsive hydrogels to create an antioxidative system (H-Zn/C-dots). The hydrogels anchored the Zn/C-dots nanozymes to the wound, allowing for long-term treatment. The results revealed that H-Zn/C-dots can considerably reduce inflammation, accelerate angiogenesis, collagen deposition, and promote tissue remodeling at the diabetic wound site. After 14 days, the wound area had decreased to approximately 9.19 %, making it a potential treatment. STATEMENT OF SIGNIFICANCE: An ultra-small carbon dot with a zinc single-atom nanozyme was designed and manufactured. Zn/C-dots possess antibacterial, ROS-scavenging, and angiogenesis activities. In vivo, the multifunctional ROS-responsive hydrogel incorporating Zn/C-dots could speed up diabetic wound healing.
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Affiliation(s)
- Sheng Dai
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
| | - Li Yao
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
| | - Luying Liu
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Department of Immunology, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Jiawei Cui
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
| | - Zhaogui Su
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
| | - Ansha Zhao
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China.
| | - Ping Yang
- Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China.
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22
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Zhang H, Liu M, Liu Y, Xiao J, Ren Y, Gao X. Portable real-time determination of Escherichia coli O157:H7 and Staphylococcus aureus based on smartphones and hydrogels. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 325:125119. [PMID: 39276468 DOI: 10.1016/j.saa.2024.125119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/12/2024] [Accepted: 09/08/2024] [Indexed: 09/17/2024]
Abstract
The aptamers functionalized orange-emission carbon dots (OCDs) and green-emission carbon dots (GCDs) had dual-emission peaks with single excitation. Tungsten disulfide nanosheets (WS2 NSs)-triggered fluorescence quenching achieved the ratiometric fluorescence determination of Escherichia coli O157:H7 (E. coli O157:H7) and Staphylococcus aureus (S. aureus) with wide ranges of 18-1.8 × 106 and 37-3.7 × 107 CFU/mL and low detection limits of 8 and 20 CFU/mL, respectively. The results in real sample with recoveries of 90-101 % and RSD < 4.12 % were no significant difference from standard plate counting method. Meanwhile, the dual-color CDs were further adopted in the smartphone-assisted hydrogel platform and achieved speedy, sensitive, portable and real-time determination of E. coli O157:H7 and S. aureus in real samples. This work has not only developed ratiometric fluorescence detection and constructed a portable hydrogel platform, but also provided a unique strategy in developing a time-efficient and easy-to-use portable device in food safety monitoring.
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Affiliation(s)
- Hongmei Zhang
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China
| | - Menglong Liu
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China
| | - Yiyao Liu
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China
| | - Jingyi Xiao
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China
| | - Yi Ren
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China
| | - Xue Gao
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Food Safety Key Lab of Liaoning Province, Institute of Ocean Research, The Fresh Food Storage and Processing Technology Research Institute of Liaoning Provincial Universities, Jinzhou, Liaoning 121013, China.
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23
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Khatun MA, Sultana F, Saha I, Karmakar P, Gazi HAR, Islam MM, Show B, Mukhopadhyay S. Lentil Extract-Mediated Ag QD Synthesis: Predilection for Albumin Protein Interaction, Antibacterial Activity, and Its Cytotoxicity for Wi-38 and PC-3 Cell Lines. ACS APPLIED BIO MATERIALS 2024. [PMID: 39259615 DOI: 10.1021/acsabm.4c00739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Recent focus has been directed toward semiconductor nanocrystals owing to their unique physicochemical properties. Nevertheless, the synthesis and characterization of quantum dots (QDs) pose considerable challenges, limiting our understanding of their interactions within a biological environment. This research offers valuable insights into the environmentally friendly production of silver quantum dots (Ag QDs) using lentil extract and clarifies their distinct physicochemical characteristics, previously unexplored to our knowledge. These findings pave the path for potential practical applications. The investigation of the phytochemical-assisted Ag QDs' affinity for BSA demonstrated modest interactions, as shown by the enthalpy and entropy changes as well as the associated Gibbs free energy during their association. Steady-state and time-resolved fluorescence spectroscopy further demonstrated a transient effect involving dynamic quenching, predominantly driven by Forster resonance energy transfer. Additionally, the study highlights the potential broad-spectrum antibacterial activity of Ag QDs (<5 nm, a zeta potential of -3.04 mV), exhibiting a remarkable MIC value of 1 μg/mL against Gram-negative bacteria (E. coli) and 1.65 μg/mL against Gram-positive bacteria (S. aureus). They can readily enter cells and tissues due to their minuscule size and the right chemical environment. They cause intracellular pathway disruption, which leads to cell death. This outcome emphasizes the distinctive biocompatibility of the green-synthesized Ag QDs, which has been confirmed by their MTT assay-based cytotoxicity against the PC-3 and Wi-38 cell lines.
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Affiliation(s)
- Mst Arjina Khatun
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Farhin Sultana
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Ishita Saha
- Department of Life Sciences and Biotechnology, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Parimal Karmakar
- Department of Life Sciences and Biotechnology, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Harun Al Rasid Gazi
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata, West Bengal 700160, India
| | - Md Maidul Islam
- Department of Chemistry, Aliah University, Action Area IIA/27, New Town, Kolkata, West Bengal 700160, India
| | - Bibhutibhushan Show
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Subrata Mukhopadhyay
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal 700032, India
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24
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Kamalarasan V, Venkateswaran C. Fluorescence Carbon Dots from Blood-Berries for Sensing Cr 6+ Ions in Water and Application in White Light Emitting Diode. J Fluoresc 2024:10.1007/s10895-024-03916-1. [PMID: 39254817 DOI: 10.1007/s10895-024-03916-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 08/20/2024] [Indexed: 09/11/2024]
Abstract
Conventional techniques for identifying heavy metal ions in water are laborious and time-consuming. Therefore, it is necessary to create innovative sensing technologies that can detect with greater sensitivity and speed. Although there have been reports of optical-based assays utilising fluorescent nanomaterials, these assays usually rely on variations in signal strength. However, this approach has significant drawbacks when it comes to environmental monitoring. Fluorescence carbon dots (CDs) have been prepared by facile synthesis from Blood berries. A homemade heavy metal optical detector is constructed to accurately identify heavy metal ions, exclusively Cr6+ ions in a water medium. Their optical emission signature varies based on the specific chromium ions in solution, and the emission intensity also changes depending on its concentration. The quenching behaviour is attributed to the interaction between the metallic cations and the fluorescent surface states of the carbon dots. Another application is the encapsulation of CDs in PVDF polymer to form a flexible film and use it as a phosphor for LED conversion.
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Affiliation(s)
- V Kamalarasan
- Department of Nuclear Physics, University of Madras, Guindy campus, Chennai, 600025, Tamil Nadu, India
| | - C Venkateswaran
- Department of Nuclear Physics, University of Madras, Guindy campus, Chennai, 600025, Tamil Nadu, India.
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25
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Barman BK, Hernández-Pinilla D, Cretu O, Kikkawa J, Kimoto K, Nagao T. Generated White Light Having Adaptable Chromaticity and Emission, Using Spectrally Reconfigurable Microcavities. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2407090. [PMID: 39231338 DOI: 10.1002/advs.202407090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 08/10/2024] [Indexed: 09/06/2024]
Abstract
Metal-free, luminescent, carbogenic nanomaterials (LCNMs) constitute a novel class of optical materials with low environmental impact. LCNMs, e.g., carbon dots (CDs), graphitic carbon nitride (g-C3N4), and carbonized polymer microspheres (CPM) show strong blue/cyan emissions, but rather weak yellow/red emission. This has been a serious drawback in applying them to light-emitting and bio-imaging applications. Here, by integrating single-component LCNMs in photonic microcavities, the study spectroscopically engineers the coupling between photonic modes in these microcavities and optical transitions to "reconfigure" the emission spectra of these luminescent materials. Resonant photons are confined in the microcavity, which allows selective re-excitation of phosphors to effectively emit down-converted photons. The down-converted photons re-excite the phosphors and are multiply recycled, leading to enhanced yellow/red emissions and resulting in white-light emission (WLE). Furthermore, by adjusting photonic stop bands of microcavity components, color adaptable (cool, pure, and warm) WLE is flexibly generated, which precisely follows the black-body Planckian locus in the chromaticity diagram. The proposed approach offers practical low-cost chromaticity-adjustable WLE from single-component, luminescent materials without any chemical or surface modification, or elaborate machinery and processing, paving the way for practical WLE devices.
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Affiliation(s)
- Barun Kumar Barman
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - David Hernández-Pinilla
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - Ovidiu Cretu
- Electron Microscopy Group, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - Jun Kikkawa
- Electron Microscopy Group, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - Koji Kimoto
- Electron Microscopy Group, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
| | - Tadaaki Nagao
- Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
- Department of Condensed Matter Physics, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
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26
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Zhu F, Xu L, Hu X, Yang M, Liu H, Gan C, Deng W, Zou G, Hou H, Ji X. Trace Fluorinated Carbon Dots Driven Li-Garnet Solid-State Batteries. Angew Chem Int Ed Engl 2024; 63:e202410016. [PMID: 38896116 DOI: 10.1002/anie.202410016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/21/2024]
Abstract
Garnet solid-state electrolyte Li6.5La3Zr1.5Ta0.5O12 (LLZTO) holds significant promise. However, the practical utilization has been seriously impeded by the poor contact of Li|garnet and electron leakage. Herein, one new type of garnet-based solid-state battery is proposed with high performance through the disparity in interfacial energy, induced by the reaction between trace fluorinated carbon dots (FCDs) and Li. The work of adhesion of Li|garnet is increased by the acquired Li-FCD composite, which facilitates an intimate Li|garnet interface with the promoted uniform Li+ deposition, revealed by density functional theory (DFT) calculations. It is further validated that a concentrated C-Li2O-LiF component at the Li|garnet interface is spontaneously constructed, due to the significant disparity in interfacial energy between C-Li2O-LiF|LLZTO and C-Li2O-LiF|Li. Furthermore, The electron transport and Li dendrites penetration are effectively hindered by the formed Li2O and LiF. The Li-FCD|LLZTO|Li-FCD symmetrical cells demonstrate stable cycling performance for over 3000 hours at 0.3 mA cm-2 and 800 hours at 0.5 mA cm-2. Furthermore, the LFP|garnet|Li-FCD full cell exhibits remarkable cycling performance (91.6 % capacity retention after 500 cycles at 1 C). Our research has revealed a novel approach to establish a dendrite-free Li|garnet interface, laying the groundwork for future advancements in garnet-based solid-state batteries.
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Affiliation(s)
- Fangjun Zhu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Laiqiang Xu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Xinyu Hu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Mushi Yang
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Huaxin Liu
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Chaolun Gan
- Zhangjiagang Guotai Huarong New Chemical Materials Co., Ltd, Zhangjiagang, 215600, China
| | - Wentao Deng
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Hongshuai Hou
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xiaobo Ji
- State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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Kang X, Li H, Yang X, Lin Z. Construction of carbon nanostructures using the sodium cocoyl glycinate@NaCl system. RSC Adv 2024; 14:28215-28223. [PMID: 39234521 PMCID: PMC11372559 DOI: 10.1039/d4ra05655h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2024] [Accepted: 08/25/2024] [Indexed: 09/06/2024] Open
Abstract
Carbon nanomaterials are widely used in many fields due to their unique properties. However, the novel production of carbon nanostructures is still a research challenge. Here, the self-assembly system of the anion surfactant sodium cocoylonate (SC)@NaCl has successfully produced a cube-shaped carbon nanoframework. The surface morphology, graphitization degree, elemental composition, surface chemical state, formation mechanism and photoluminescence properties of the carbon nanomaterials were further investigated. The results show that the surfactant-salt system is a novel and environmentally friendly method for producing nanostructures.
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28
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Lee SJ, Zheng YY, Chen WM, Hsueh YH. Nitrogen-Doped Carbon Dots: A New Powerful Fluorescent Dye with Substantial Effect on Bacterial Cell Labeling. ACS OMEGA 2024; 9:36453-36463. [PMID: 39220540 PMCID: PMC11359637 DOI: 10.1021/acsomega.4c04273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 07/11/2024] [Accepted: 08/08/2024] [Indexed: 09/04/2024]
Abstract
Carbon dots (CDs)-minute carbon nanoparticles with remarkable luminescent properties, photostability, and low toxicity-show potential for various applications. CDs synthesized using citric acid and urea are the least toxic to biological environments. Here, we aimed to explore the effect of CDs synthesized using citric acid and urea at 50, 33, and 25% (CDs 1/1, 1/2, and 1/3, respectively) weight ratios in a microwave on bacterial cell fluorescence sensing and labeling. The nanoscale properties of CDs were investigated via transmission electron microscopy and dynamic light scattering particle size analysis. X-ray powder diffraction confirmed the graphitic structures of CDs. X-ray photoelectron spectroscopy revealed that the nitrogen content increased gradually with increasing urea ratios, indicating functional group changes. Transient photoluminescence decay periods demonstrated superior fluorescence intensity of CDs 1/3 under blue, green, and red lights. The use of CDs was notably more efficient than traditional methods in staining bacterial cells. Fluorescence microscopy of 10 g-positive and 10 g-negative bacteria revealed enhanced staining of Gram-positive strains, with CDs 1/3 presenting the best results. The CDs exhibited excellent photostability, maintaining poststaining fluorescence for 100 min, surpassing the performance of conventional dyes. CDs could serve as potential fluorescent dyes for the rapid discrimination of Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Sin-Jen Lee
- Department of Sea Food Science, National Kaohsiung University of Science, Kaohsiung 81157, Taiwan
| | - Ya-Yun Zheng
- Department of Sea Food Science, National Kaohsiung University of Science, Kaohsiung 81157, Taiwan
| | - Wen-Ming Chen
- Department of Sea Food Science, National Kaohsiung University of Science, Kaohsiung 81157, Taiwan
| | - Yi-Huang Hsueh
- Department of Sea Food Science, National Kaohsiung University of Science, Kaohsiung 81157, Taiwan
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29
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Zhang M, Zhao J, Wang S, Dai Z, Qin S, Mei S, Zhang W, Guo R. Preventive conservation of paper-based relics with visible light high-transmittance ultraviolet blocking film based on carbon dots. J Colloid Interface Sci 2024; 678:593-601. [PMID: 39216387 DOI: 10.1016/j.jcis.2024.08.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/10/2024] [Accepted: 08/18/2024] [Indexed: 09/04/2024]
Abstract
Paper-based relics is an important carrier for recording and preserving information, however, it faces irreversible UV-induced damage, including photocleavage, oxidation, acidification and discoloration, which seriously affects its value and lifespan. Carbon dots (CDs) possess excellent UV absorption and good chemical stability, making them suitable for UV protection. Herein, we propose a high-security and efficient method utilizing CDs films (CDFs) for preventive protection of paper against UV damage. The CDFs with high tunable UV absorbance and minimal absorbance in the visible light range, effectively shield paper from UV radiation while preserving its visual appeal. Moreover, the UV transmittance of the film can be fine-tuned to the content of CDs and can be easily removed from the paper without residue. Artificial accelerated UV aging experiments demonstrate the deceleration of acidification, oxidation, and photocleavage in the protected bamboo paper and Xuan paper. This research paces a new direction for the protection of paper and paper-based relics and artworks with emerging carbon materials, offering customizable protection effects tailored to specific preservation and exhibition requirements. This research pioneers a novel approach to preventive protection of paper and paper-based relics using emerging carbon dots materials, offering tailored protection for diverse preservation needs.
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Affiliation(s)
- Mingliang Zhang
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Jinchan Zhao
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Sinong Wang
- Institute for Preservation and Conservation of Chinese Ancient Books, Fudan University Library, Fudan University, Shanghai 200433, China.
| | - Zhenyu Dai
- Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Shuaitao Qin
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Shiliang Mei
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China
| | - Wanlu Zhang
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China.
| | - Ruiqian Guo
- Institute for Electric Light Sources, School of Information Science and Technology, Fudan University, Shanghai 200433, China; Institute of Future Lighting, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China.
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30
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Sun Y, Huang L. Regulation of Brightness Attributes of High-Stability Carbon Quantum Dots Applicable in LED Digital Color Display. J Fluoresc 2024:10.1007/s10895-024-03910-7. [PMID: 39141275 DOI: 10.1007/s10895-024-03910-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024]
Abstract
Fluorescent carbon dots (CDs) attract much attention due to high stability and low toxicity. For high brightness, multi-color emission and fluorescence stability, polystyrene (PS)/CDs composite films were prepared. First, three types of CDs and three PS/CDs films were prepared. Then, three light-emitting-diode (LED) devices were achieved. Compared to CDs solutions, CDs filled films show almost unchanged photoluminescence (PL) spectra. PL peaks of blue, green and red films appear at 462 nm, 544 nm and 603 nm, separately. Blue CDs lead to highest photoluminescence quantum yields (PLQYs) of 76% (solution) and 49% (film). A certain level of thermal stability and fluorescent reversibility of blue film were verified. After 60 days of air exposure, PL intensities of blue and green films reach 97% and 93% of original values, separately. Improving work time cannot vary PL wavelengths of devices. For blue-emitted device, PL intensity reaches 55% of original value after working for 600 min. For green-emitted device, PL intensity reaches 80% after working for 300 min. The novelty is effective PS encapsulation and uniform dispersion of CDs to yield favorable fluorescence properties of devices. This work inspires ideas for large-scale preparation of fluorescent films for LED digital color display.
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Affiliation(s)
- Ying Sun
- School of Humanities, Jiangxi Institute of Fashion Technology, Xiangtang Economic Development Zone, No. 103, Lihuzhong Avenue, Nanchang, 330201, P. R. China.
| | - Li Huang
- School of Art and Design, Jiangxi Institute of Fashion Technology, Xiangtang Economic Development Zone, No. 103, Lihuzhong Avenue, Nanchang, 330201, P. R. China
- School of The Arts, Universiti Sains Malaysia, Gelugor, Penang, 11800, Malaysia
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31
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Zhang H, Bai J, Chen X, Wang L, Peng W, Zhao Y, Weng J, Zhi W, Wang J. Surface State-Based panchromatic luminescent carbon dots. J Colloid Interface Sci 2024; 678:77-87. [PMID: 39180850 DOI: 10.1016/j.jcis.2024.08.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/25/2024] [Accepted: 08/11/2024] [Indexed: 08/27/2024]
Abstract
Carbon dots have shown a broad application prospect in the fields of sensing and detection, biological imaging, and optoelectronic devices. However, it is still challenging to adopt a simple and green synthesis route and to develop new precursor systems to prepare full-color luminescent carbon dots. This study proposes a mechanism for fine regulation of carbon dot fluorescence spectra based on surface states of CN, COC, and OH, among which CN play a major role in long wavelength emission while COC and OH are responsible for the blue shift of emission wavelength. Using 4,4-bipyridine and p-phenylenediamine as precursors in safe and environmentally friendly glycol and water as solvents for the first time, the fine spectral carbon dots with full spectrum luminescence from purple (441 nm) to red (627 nm) were successfully synthesized by simply changing the composition of the reaction solvent and using a short reaction time. Compared with other reports on regulating polychromatic carbon dots, our method is more refined and has a wider distribution of luminescent colors. In addition, the obtained carbon dots based on such surface state luminescence mechanism have shown good application prospects in specific detection of Fe3+and cell labeling.
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Affiliation(s)
- Hangzhen Zhang
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jiafan Bai
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Xiangli Chen
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Linyu Wang
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Wenzhen Peng
- Department of Biochemistry and Molecular Biology, College of Basic and Forensic Medicine, Sichuan University, Chengdu 610041, China.
| | - Yuancong Zhao
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jie Weng
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Wei Zhi
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
| | - Jianxin Wang
- Laboratory of Advance Technologies of Materials, Ministry of Education, College of Medicine and School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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32
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Wu G, Qiu H, Du C, Zheng Z, Liu Q, Wang Z, Luo P, Shen Y. Intelligent onsite dual-modal assay based on oxidase-like fluorescence carbon dots-driven competitive effect for ethyl carbamate detection. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134707. [PMID: 38810578 DOI: 10.1016/j.jhazmat.2024.134707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/29/2024] [Accepted: 05/22/2024] [Indexed: 05/31/2024]
Abstract
Intelligent onsite accurate monitoring ethyl carbamate (EC, a group 2 A carcinogen) in environment is of great significance to safeguard environmental health and public safety. Herein, we reported an intelligent dual-modal point-of-care (POC) assay based on the bimetallic Mn and Ce co-doped oxidase-like fluorescence carbon dots (Ce&MnCDs) nanozyme-driven competitive effect. In brief, the oxidase-like activity of Ce&MnCDs was inhibited by thiocholine (TCh, originating from the hydrolysis of acetylcholinesterase (AChE) to acetylthiocholine (ATCh)), preventing the oxidation of o-phenylenediamine (OPD) to 2,3-diaminophenothiazine (DAP). However, with the aid of Br2 + NaOH, EC inactivated AChE to prevent TCh generation for re-launching the oxidase-like activity of Ce&MnCDs to trigger the oxidation of OPD into DAP, thereby outputting an EC concentration-dependent ratiometric fluorescence and colorimetric readouts by employing Ce&MnCDs and OPD as the optical signal reporters. Interestingly, these dual-modal optical signals could be transduced into the gray values that was linearly proportional to the residual levels of EC on a smartphone-based portable platform, with a detection limit down to 1.66 μg/mL, qualifying the requirements of analysis of EC residues in real samples. This opened up a new avenue for onsite assessment of the risk of residues of EC, safeguarding environmental health and public safety.
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Affiliation(s)
- Guojian Wu
- School of Food & Biological Engineering, Anhui Province Key Laboratory of Agricultural Products Modern Processing, Hefei University of Technology, Hefei 230009, China
| | - Huimin Qiu
- School of Food & Biological Engineering, Anhui Province Key Laboratory of Agricultural Products Modern Processing, Hefei University of Technology, Hefei 230009, China
| | - Chenxing Du
- School of Food & Biological Engineering, Anhui Province Key Laboratory of Agricultural Products Modern Processing, Hefei University of Technology, Hefei 230009, China
| | - Zhi Zheng
- School of Food & Biological Engineering, Anhui Province Key Laboratory of Agricultural Products Modern Processing, Hefei University of Technology, Hefei 230009, China
| | - Qing Liu
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014); NHC Key Lab of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing 100022, China
| | - Zifei Wang
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014); NHC Key Lab of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing 100022, China
| | - Pengjie Luo
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014); NHC Key Lab of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing 100022, China.
| | - Yizhong Shen
- School of Food & Biological Engineering, Anhui Province Key Laboratory of Agricultural Products Modern Processing, Hefei University of Technology, Hefei 230009, China.
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33
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Selva Sharma A, Lee NY. Comprehensive review on fluorescent carbon dots and their applications in nucleic acid detection, nucleolus targeted imaging and gene delivery. Analyst 2024; 149:4095-4115. [PMID: 39007289 DOI: 10.1039/d4an00630e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Carbon dots (CDs), including carbon quantum dots, graphene quantum dots, carbon nanodots, and polymer dots, have gained significant attention due to their unique structural and fluorescence characteristics. This review provides a comprehensive overview of the classification, structural characteristics, and fluorescence properties of CDs, followed by an exploration of various fluorescence sensing mechanisms and their applications in gene detection, nucleolus imaging, and gene delivery. Furthermore, the functionalization of CDs with diverse surface ligand molecules, including dye molecules, nucleic acid probes, and metal derivatives, for sensitive nucleic acid detection is systematically examined. Fluorescence imaging of the cell nucleolus plays a vital role in examining intracellular processes and the dynamics of subcellular structures. By analyzing the mechanism of fluorescence and structure-function relationships inherent in CDs, the nucleolus targeting abilities of CDs in various cell lines have been discussed. Additionally, challenges such as the insufficient organelle specificity of CDs and the inconsistent mechanisms underlying nucleolus targeting have also been highlighted. The unique physical and chemical properties of CDs, particularly their strong affinity toward deoxyribonucleic acid (DNA), have spurred interest in gene delivery applications. The use of nuclear-targeting peptides, polymers, and ligands in conjunction with CDs for improved gene delivery applications have been systematically reviewed. Through a comprehensive analysis, the review aims to contribute to a deeper understanding of the potential and challenges associated with CDs in biomedical applications.
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Affiliation(s)
- Arumugam Selva Sharma
- Department of Nanoscience and Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, South Korea
| | - Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, South Korea.
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34
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Guye ME, Appiah-Ntiamoah R, Dabaro MD, Kim H. Engineering FeOOH/Fe 2O 3@Carbon Interfaces With Biomass-Derived Carbon Nanodot/Iron Colloids for Efficient Redox-Modulated Dopamine Voltammetric Detection. Chem Asian J 2024; 19:e202400435. [PMID: 38818739 DOI: 10.1002/asia.202400435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/23/2024] [Accepted: 05/31/2024] [Indexed: 06/01/2024]
Abstract
The Fe2+/Fe3+ redox couple is effective for voltammetric detection of trace dopamine (DA). However, achieving adequate concentrations with high electroactive surface area (ECSA), DA affinity, and fast interfacial charge transfer is challenging. Consequently, most reported Fe-based sensors have a high nanomolar range detection limit (LOD). Herein, we address these limitations by manipulating the phase and morphology of FeOOH/Fe2O3 heterojunctions anchored on sp2-carbon. FeOOH/Fe2O3 is synthesized by variable temperature aging of unique Fe5H9O15/Fe2O3@sp2-carbon colloidal nanoparticles, which form via chelation between biomass-derived carbon nanodots (CNDs) and Fe2+ ions. At 27 °C and 120 °C, Fe5H9O15/Fe2O3@sp2-carbon transforms into β-FeOOH/Fe2O3 nanoparticles and α-FeOOH/Fe2O3 nanosheet, respectively. The β-FeOOH/Fe2O3 interface exhibits higher eg orbital electron occupancy than α-FeOOH/Fe2O3, thereby facilitating oxygen adsorption and the generation of Fe2+/Fe3+ sites near the polarization potential of DA. This facilitates interfacial electron transfer between Fe3+ and DA. Moreover, its nanoparticle morphology enhances ECSA and DA adsorption compared to α-FeOOH/Fe2O3 nanosheets. With a LOD of ~3.11 nM, β-FeOOH/Fe2O3 surpasses the lower threshold in humans (~10 nM) and matches noble-metal sensors. Furthermore, it exhibits selective detection of DA over 10 biochemicals in urine. Therefore, the β-FeOOH/Fe2O3@sp2-C platform holds promise as a low-cost, easy-to-synthesize, and practical voltammetric DA monitor.
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Affiliation(s)
- Meseret Ethiopia Guye
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
| | - Richard Appiah-Ntiamoah
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
| | - Mintesinot Dessalegn Dabaro
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
| | - Hern Kim
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do, 17058, Republic of Korea
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35
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Anjali Devi JS, Madanan Anju S, Lekha GM, Aparna RS, George S. Luminescent carbon dots versus quantum dots and gold nanoclusters as sensors. NANOSCALE HORIZONS 2024. [PMID: 39037443 DOI: 10.1039/d4nh00107a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Ultra-small nanoparticles, including quantum dots, gold nanoclusters (AuNCs) and carbon dots (CDs), have emerged as a promising class of fluorescent material because of their molecular-like properties and widespread applications in sensing and imaging. However, the fluorescence properties of ultra-small gold nanoparticles (i.e., AuNCs) and CDs are more complicated and well distinguished from conventional quantum dots or organic dye molecules. At this frontier, we highlight recent developments in the fundamental understanding of the fluorescence emission mechanism of these ultra-small nanoparticles. Moreover, this review carefully analyses the underlying principles of ultra-small nanoparticle sensors. We expect that this information on ultra-small nanoparticles will fuel research aimed at achieving precise control over their fluorescence properties and the broadening of their applications.
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Affiliation(s)
- J S Anjali Devi
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Thiruvananthapuram 695581, Kerala, India.
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P. O., Kottayam 686560, Kerala, India
- Department of Chemistry, Kannur University, Swami Anandatheertha Campus, Payyanur, Edat P. O. Kannur 670327, Kerala, India
| | - S Madanan Anju
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Thiruvananthapuram 695581, Kerala, India.
| | - G M Lekha
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Thiruvananthapuram 695581, Kerala, India.
| | - R S Aparna
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Thiruvananthapuram 695581, Kerala, India.
| | - Sony George
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Thiruvananthapuram 695581, Kerala, India.
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36
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Ratnesh RK, Singh MK, Kumar V, Singh S, Chandra R, Singh M, Singh J. Mango Leaves ( Mangifera indica)-Derived Highly Florescent Green Graphene Quantum Dot Nanoprobes for Enhanced On-Off Dual Detection of Cholesterol and Fe 2+ Ions Based on Molecular Logic Operation. ACS APPLIED BIO MATERIALS 2024; 7:4417-4426. [PMID: 38875229 DOI: 10.1021/acsabm.4c00292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
In the present study, we have engineered a molecular logic gate system employing both Fe2+ ions and cholesterol as bioanalytes for innovative detection strategies. We utilized a green-synthesis method employing the mango leaves extract to create fluorescent graphene quantum dots termed "mGQDs". Through techniques like HR-TEM, i.e., high-resolution transmission electron microscopy, Raman spectroscopy, and XPS, i.e., X-ray photoelectron spectroscopy, the successful formation of mGQDs was confirmed. The photoluminescence (PL) characteristics of mGQDs were investigated for potential applications in metal ion detection, specifically Fe2+ traces in water, by using fluorescence techniques. Under 425 nm excitation, mGQDs exhibited emission bands at 495 and 677 nm in their PL spectrum. Fe2+-induced notable quenching of mGQDs' PL intensity decreased by 97% with 2.5 μM Fe2+ ions; however, adding 20 mM cholesterol resulted in a 92% recovery. Detection limits were established through a linear Stern-Volmer (S-V) plot at room temperature, yielding values of 4.07 μM for Fe2+ ions and 1.8 mM for cholesterol. Moreover, mGQDs demonstrated biocompatibility, aqueous solubility, and nontoxicity, facilitating the creation of a rapid nonenzymatic cholesterol detection method. Selectivity and detection studies underscored mGQDs' reliability in cholesterol level monitoring. Additionally, a molecular logic gate system employing Fe2+ metal ions and cholesterol as a bioanalyte was established for detection purposes. Overall, this research introduces an ecofriendly approach to craft mGQDs and highlights their effectiveness in detecting metal ions and cholesterol, suggesting their potential as versatile nanomaterials for diverse analytical and biomedical applications.
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Affiliation(s)
- Ratneshwar Kumar Ratnesh
- Department of Electronics & Communication Engineering, Meerut Institute of Engineering & Technology, Meerut, Uttar Pradesh 250005, India
| | - Mrityunjay Kumar Singh
- Department of Electronics & Communication Engineering, Meerut Institute of Engineering & Technology, Meerut, Uttar Pradesh 250005, India
| | - Vinay Kumar
- Department of Electronics and Communication Engineering, Graphic Era Deemed to be University, Dehradun, Uttarakhand 248002, India
| | - Snigdha Singh
- Drug Discovery and Development Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Ramesh Chandra
- Maharaja Surajmal Brij University, Bharatpur, Rajasthan 321201, India
- Institute of Nano Medical Sciences, University of Delhi, Delhi 110007, India
| | - Mandeep Singh
- Department of Electronics and Communication Engineering, National Institute of Technology Karnataka, Surathkal 575025, India
| | - Jay Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
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37
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Zhang SN, Wang LL, Xiao TT, Zhang M, Yin XB. Carbon dots with enhanced red emission for ratiometric sensing and encryption applications. Anal Bioanal Chem 2024; 416:3985-3996. [PMID: 38581533 DOI: 10.1007/s00216-024-05252-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 04/08/2024]
Abstract
The excitation-dependent emission properties of carbon dots (Cdots) are extensively reported, but their red emission is often weak, limiting their wider application. Here we introduce ethidium bromide, as a functional precursor with red emission, to enhance the red emission for Cdots, with comparable intensity at a broad wavelength range to multi-emission Cdots (M-Cdots). We found that Cdots prepared with ethidium bromide/ethylenediamine exhibited strong blue and red emission at 440 and 615 nm, with optimal excitation at 360 and 470 nm as M-Cdots, respectively, but the Cdots from single ethidium bromide (EB-Cdots) possessed weak red emission. M-Cdots exhibited a broad absorption band at 478 nm, but a band blue-shifted to 425 nm was observed for EB-Cdots, while no absorption was observed at 478-425 nm for the Cdots prepared with citric acid and ethylenediamine. Thus, we proposed that C=O and C=N formed a π-conjugation structure as the absorption band at 478 nm for the red emission of M-Cdots, as also confirmed with the excitation at 470 nm. Moreover, the π-conjugation structure is fragile and sensitive to harsh conditions, so red emission was difficult to observe for the Cdots prepared with citric acid/ethylenediamine or single ethidium bromide. M-Cdots possess two centers for blue and red emission with different structures. The dual emission was therefore used for ratiometric sensing with dichromate (Cr2O72-) and formaldehyde (HCHO) as the targets using the intensity ratio of the emissions at 615 and 440 nm. Due to the comparable intensity at a broad wavelength range, we designed encryption codes with five excitations at 360, 400, 420, 450, and 470 nm as the inputs, and the emission colors were used for information decoding. Thus, we determined why red emission was difficult to realize for Cdots, and our results could motivate the design of red-emission Cdots for extensive applications.
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Affiliation(s)
- Sheng-Nan Zhang
- Institute for Frontier Medical Technology, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Lin-Lin Wang
- Institute for Frontier Medical Technology, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Ting-Ting Xiao
- Institute for Frontier Medical Technology, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Min Zhang
- Institute for Frontier Medical Technology, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China.
| | - Xue-Bo Yin
- Institute for Frontier Medical Technology, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China.
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38
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Li P, Xue S, Sun L, Ma X, Liu W, An L, Liu Y, Qu D, Sun Z. Formation and Fluorescent Mechanism of Multiple Color Emissive Carbon Dots from o-Phenylenediamine. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310563. [PMID: 38757918 DOI: 10.1002/smll.202310563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/30/2024] [Indexed: 05/18/2024]
Abstract
Carbon dots (CDs) have received considerable attention in many application areas owing to their unique optical properties and potential applications; however, the fluorescent mechanism is an obstacle to their applications. Herein, three-color emissive CDs are prepared from single o-phenylenediamine (oPD) by regulating the ratio of ethanol and dimethylformamide (DMF). Fluorescent mechanism of these CDs is proposed as molecular state fluorescence. Reaction intermediates are identified using liquid chromatrography-mass spectroscopy (LC-MS) and 1H nuclear magnetic resonance (NMR) spectra. 1H-Benzo[d]imidazole (BI), 2,3-diaminophenazine (DAP), and 5,14-dihydroquinoxalino[2,3-b] phenazine (DHQP) are proposed to be the fluorophores of blue, green, and red emissive CDs by comparing their optical properties. As per the LC-MS and 1H-NMR analysis, DHQP with red emission tends to form from DAP and oPD in pure ethanol. By adding DMF, BI formation is enhanced and DHQP formation is suppressed. The prepared CDs exhibit green emission with DAP. When the DMF amount is >50%, BI formation is considerably promoted, resulting in DAP formation being suppressed. BI with blue emission then turns into the fluorophore of CDs. This result provides us an improved understanding of the fluorescent mechanism of oPD-based CDs, which guides us in designing the structure and optical properties of CDs.
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Affiliation(s)
- Pengfei Li
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Shanshan Xue
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Lu Sun
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Xiaobao Ma
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Wenning Liu
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Li An
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Yichang Liu
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Dan Qu
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Zaicheng Sun
- Center of Excellence for Environmental Safety and Biological Effects, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry, Beijing University of Technology, Beijing, 100124, P. R. China
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39
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Xia Y, Xu Y. Unit-Emitting Carbon Dots. J Phys Chem Lett 2024; 15:6482-6488. [PMID: 38869323 DOI: 10.1021/acs.jpclett.4c01316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Understanding the photoluminescence mechanisms of carbon dots (C-dots) is of importance for both fundamental science and their corresponding applications. In this study, we verify the emitting-unit model of C-dots by an upgraded "contrastive analysis" research paradigm. Employing preparative thin-layer chromatography, we recently developed polyamide column chromatography separation techniques, and four kinds of highly correlative C-dots are obtained from a homologous sample made from ortho-aminophenol precursors. Combining comprehensive experimental characterizations, especially the direct evidence from electrospray ionization mass spectrometry, we demonstrate that the photoluminescence of the four C-dots comes from the same polycyclic aromatic hydrocarbon units (named as emitting units) indeed, although these C-dots have substantially different chemical compositions.
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Affiliation(s)
- Yunsheng Xia
- Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China
| | - Yanli Xu
- Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China
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40
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Zhou Y, Duan HL, Tan KJ, Dong L. One-step solvothermal synthesis of full-color fluorescent carbon dots for information encryption and anti-counterfeiting applications. NANOSCALE 2024; 16:11642-11650. [PMID: 38847559 DOI: 10.1039/d4nr01111b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Multicolor fluorescent carbon dots (CDs) have received extensive attention due to their excellent fluorescence tunable performance. In this study, multicolor CDs with color tunable and high fluorescence quantum yields (QYs) were successfully prepared under the same conditions by a one-step solvothermal method using 2-aminoterephthalic acid (ATA) and Nile Blue A (NBA) as reaction reagents, achieving a wide color field coverage. Detailed studies on the relevant mechanisms have been carried out for blue, green and red CDs, indicating that the regulating mechanism of multicolor luminescence is determined by the size of the sp2 conjugated domains, which is due to the increase of particle size that causes an increase in the size of the sp2 conjugated domains, resulting in the narrowing of the band gap and the red-shift of the emission wavelength. It was found that the CDs have the advantages of simple preparation, high photostability and high quantum yield. They were used as fluorescent ink and mixed with polyvinyl alcohol (PVA) to form CD/PVA composites, which were successfully applied in the field of information encryption and anti-counterfeiting. This work provides a new strategy for the synthesis of panchromatic tunable fluorescent CDs and their application in the field of information encryption and anti-counterfeiting.
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Affiliation(s)
- Yi Zhou
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Hai-Lin Duan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Ke-Jun Tan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Lin Dong
- School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
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41
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Guo T, Yang F, Liu C, Hou D, Zheng Y, Gao H, Lin X, Sun H. Solid-State Red Carbon Dots Based on Biomass Furan Derivatives. Inorg Chem 2024; 63:11478-11486. [PMID: 38819949 DOI: 10.1021/acs.inorgchem.4c01692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2024]
Abstract
In the preparation of carbon dots (CDs), precursors are crucial, and abundant precursors endow CDs with various structures and fluorescence characteristics. Furan (FU) and its derivatives are considered excellent carbonization materials due to their π conjugated structures and active functional groups, such as hydroxyl and aldehyde groups. Herein, we prepare FU-derivative-based CDs by a solvothermal method and investigate the influences of the precursor structure on the fluorescence characteristics. Surprisingly, CDs prepared from 5-hydroxymethylfurfural (HMF) with both aldehyde and hydroxyl groups exhibit red-shifted fluorescence characteristics in the solid state. We postulate that this solid-state fluorescence characteristic is due to the enhancement of supramolecular cross-linking fluorescence between CDs. The unique precursor structure leads to carboxyl groups on the surface of HMF-CDs that are conducive to the hydrogen bond formation. As the concentration of CDs increases, the hydrogen bonding effect increases, leading to a red-shift in the fluorescence wavelength. Therefore, basically full-color CDs/poly(vinyl alcohol) (PVA) phosphor-based light-emitting diodes can be achieved by controlling the degree of supramolecular cross-linking of CDs in PVA. This research provides a new approach for the preparation of solid-state luminescent CDs.
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Affiliation(s)
- Tingxuan Guo
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Fulin Yang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Yunwu Zheng
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Hui Gao
- Yunnan University of Chinese Medicine, 1076, Yuhua Road, University City of Chenggong, 650500 Kunming, Yunnan Province, China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
| | - Hao Sun
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, 300 Bailong Road, Kunming 650224, Yunnan Province, China
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42
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Qureshi ZA, Dabash H, Ponnamma D, Abbas M. Carbon dots as versatile nanomaterials in sensing and imaging: Efficiency and beyond. Heliyon 2024; 10:e31634. [PMID: 38832274 PMCID: PMC11145243 DOI: 10.1016/j.heliyon.2024.e31634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 05/20/2024] [Accepted: 05/20/2024] [Indexed: 06/05/2024] Open
Abstract
Carbon dots (CDs) have emerged as a versatile and promising carbon-based nanomaterial with exceptional optical properties, including tunable emission wavelengths, high quantum yield, and photostability. CDs are appropriate for various applications with many benefits, such as biocompatibility, low toxicity, and simplicity of surface modification. Thanks to their tunable optical properties and great sensitivity, CDs have been used in sensing as fluorescent probes for detecting pH, heavy metal ions, and other analytes. In addition, CDs have demonstrated potential as luminescence converters for white organic light-emitting diodes and light emitters in optoelectronic devices due to their superior optical qualities and exciton-independent emission. CDs have been used for drug administration and bioimaging in the biomedical field due to their biocompatibility, low cytotoxicity, and ease of functionalization. Additionally, due to their stability, efficient charge separation, and low recombination rate, CDs have shown interesting uses in energy systems, such as photocatalysis and energy conversion. This article highlights the growing possibilities and potential of CDs as adaptable nanomaterials in a variety of interdisciplinary areas related to sensing and imaging, at the same time addressing the major challenges involved in the current research and proposing scientific solutions to apply CDs in the development of a super smart society.
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Affiliation(s)
| | - Hanan Dabash
- Center for Advanced Materials, Qatar University, 2713, Doha, Qatar
| | - Deepalekshmi Ponnamma
- Materials Science and Technology Program, Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - M.K.G. Abbas
- Center for Advanced Materials, Qatar University, 2713, Doha, Qatar
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Christoph E, Yu L, Newby SD, Rivera Orsini MA, Scroggins J, Keffer DJ, Harper DP, Dhar M. Novel Kraft Softwood Lignin-Derived Carbon Quantum Dots: Synthesis, Characterization, and In Vitro Cytocompatibility. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1029. [PMID: 38921905 PMCID: PMC11206522 DOI: 10.3390/nano14121029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/06/2024] [Accepted: 06/08/2024] [Indexed: 06/27/2024]
Abstract
Carbon quantum dots (CQDs) have been investigated for biomedical applications in medical imaging due to their fluorescent properties, overall long-term stability, and excellent cytocompatibility and biocompatibility. Lignin is an organic polymer in the tissues of woody plants. It is also considered a byproduct of the wood and pulp industries. Hence, it presents as a renewable source of carbon nanoparticles. In this study, we report the synthesis and material and biological characterization of two colloidal suspensions of CQDs in water derived from lignin-based carbon. One was the native form of CQDs derived from lignin carbon, and the second was doped with nitrogen to evaluate material differences. Material characterization was carried out using various commonly used techniques, including Fourier transform infrared spectroscopy (FTIR), emission and absorbance spectra, zeta potential, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Thin films of CQDs were formed on glass and silicon substrates to assess the in vitro cytocompatibility with human mesenchymal stem cells (hMSCs). Observations suggest that the two forms of CQDs promote cell attachment within 24 h and sustain it for at least 7 days. The overall structure and shape of cells suggest a lack of any adverse or toxic effects of CQDs. The data lay down the novel foundation to support the use of lignin-derived CQDs in tissue engineering applications.
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Affiliation(s)
- Eli Christoph
- Material Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA; (E.C.); (L.Y.); (J.S.); (D.J.K.)
- Tissue Engineering and Regenerative Medicine, Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA; (S.D.N.); (M.A.R.O.)
| | - Lu Yu
- Material Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA; (E.C.); (L.Y.); (J.S.); (D.J.K.)
| | - Steven D. Newby
- Tissue Engineering and Regenerative Medicine, Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA; (S.D.N.); (M.A.R.O.)
| | - Michael A. Rivera Orsini
- Tissue Engineering and Regenerative Medicine, Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA; (S.D.N.); (M.A.R.O.)
| | - Jakob Scroggins
- Material Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA; (E.C.); (L.Y.); (J.S.); (D.J.K.)
| | - David J. Keffer
- Material Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA; (E.C.); (L.Y.); (J.S.); (D.J.K.)
| | - David P. Harper
- Center for Renewable Carbon, School for Natural Resources, University of Tennessee, Knoxville, TN 37996, USA;
| | - Madhu Dhar
- Tissue Engineering and Regenerative Medicine, Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA; (S.D.N.); (M.A.R.O.)
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Zhang P, Zheng Y, Ren L, Li S, Feng M, Zhang Q, Qi R, Qin Z, Zhang J, Jiang L. The Enhanced Photoluminescence Properties of Carbon Dots Derived from Glucose: The Effect of Natural Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:970. [PMID: 38869595 PMCID: PMC11174097 DOI: 10.3390/nano14110970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/27/2024] [Accepted: 05/31/2024] [Indexed: 06/14/2024]
Abstract
The investigation of the fluorescence mechanism of carbon dots (CDs) has attracted significant attention, particularly the role of the oxygen-containing groups. Dual-CDs exhibiting blue and green emissions are synthesized from glucose via a simple ultrasonic treatment, and the oxidation degree of the CDs is softly modified through a slow natural oxidation approach, which is in stark contrast to that aggressively altering CDs' surface configurations through chemical oxidation methods. It is interesting to find that the intensity of the blue fluorescence gradually increases, eventually becoming the dominant emission after prolonging the oxidation periods, with the quantum yield (QY) of the CDs being enhanced from ~0.61% to ~4.26%. Combining the microstructure characterizations, optical measurements, and ultrafiltration experiments, we hypothesize that the blue emission could be ascribed to the surface states induced by the C-O and C=O groups, while the green luminescence may originate from the deep energy levels associated with the O-C=O groups. The distinct emission states and energy distributions could result in the blue and the green luminescence exhibiting distinct excitation and emission behaviors. Our findings could provide new insights into the fluorescence mechanism of CDs.
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Affiliation(s)
- Pei Zhang
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Yibo Zheng
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Linjiao Ren
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Shaojun Li
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Ming Feng
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Qingfang Zhang
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Rubin Qi
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Zirui Qin
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Jitao Zhang
- Henan Key Lab of Information-Based Electrical Appliances, College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; (P.Z.); (Y.Z.); (S.L.); (M.F.); (Q.Z.); (R.Q.); (Z.Q.); (J.Z.)
| | - Liying Jiang
- School of Electronics and Information, Academy for Quantum Science and Technology, Zhengzhou University of Light Industry, No. 136 Ke Xue Avenue, Zhengzhou 450002, China
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45
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Wagh RV, Riahi Z, Kim JT, Rhim JW. Carrageenan-based functional films hybridized with carbon dots and anthocyanins from rose petals for smart food packaging applications. Int J Biol Macromol 2024; 272:132817. [PMID: 38834126 DOI: 10.1016/j.ijbiomac.2024.132817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 05/20/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
Multifunctional smart biopolymeric films were fabricated using rose petal anthocyanin (RPA) and carrageenan (CAR) doped with rose petal-derived carbon dots (RP-CDs). Response surface-optimized RPA showed the highest total anthocyanins and radical scavenging ability. Produced RP-CD exhibited UV absorption and high fluorescence with antibacterial/antioxidant abilities. Enrichment with 2 % RP-CD and 5 % RPA in the CAR matrix results in improved physicochemical, i.e., water contact angle, water vapor permeability, and UV-blocking properties of the fabricated material. Results showed that nanocomposite films scavenged radicals better than the neat CAR films. Zeta potential, FTIR, SEM, and XPS suggested improved compatibility/stability and enhanced elemental configuration of RP-CDs/RPA additives in the CAR polymer matrix. Perishable food packaging (minced pork and shrimp) demonstrated that nanocomposite films work efficiently and non-destructively and are promising tools for monitoring real-time freshness through interpretable visual changes from red to yellow. The CAR/RP-CDs/RPA-based nanocomposite indicator films are expected to be applied as various smart packaging materials. These films possess the ability to promptly detect changes in quality, preserve the quality, and prolong the shelf life of packaged foods.
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Affiliation(s)
- Rajesh V Wagh
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India; BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Zohreh Riahi
- BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jun Tae Kim
- BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jong-Whan Rhim
- BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea.
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46
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Rahmatian N, Abbasi S, Abbasi N, Tavakkoli Yaraki M. Green-synthesized chitosan‑carbon dot nanocomposite as turn-on aptasensor for detection and quantification of Leishmania infantum parasite. Int J Biol Macromol 2024; 270:132483. [PMID: 38763252 DOI: 10.1016/j.ijbiomac.2024.132483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
Leishmania is one of the most common diseases between human and animals, caused by Leishmania infantum parasite. Here, we have developed an ultra-selective turn-on fluorescent probe based on an aptamer and Chitosan-CD nanocomposite. The CD used in this study were synthesized using Quercus cap extract and a microwave-assisted approach. The Chitosan-CD nanocomposite was optimized using several microscopic and spectroscopic techniques to possess a bright fluorescence emission before adding aptamer and totally quenched fluorescence after addition of aptamer. The designed probe was proficient in the detection and quantification Leishmania infantum parasite by selective targeting of poly(A) binding protein (PABP) on the surface of the parasite. The designed fluorescent biosensor with high sensitivity, excellent selectivity, and a limit of detection (LOD) of 94 cells/mL of the Leishmania infantum parasite as well as a linear response in the ranges of 188-750 cells/mL and 3000-6000 cells/mL (R2 ≥ 0.98 for both linear ranges). Additionally, the selectivity of the designed probe was evaluated in the presence of different pathogenic species such as Trypanosoma brucei parasite and Staphylococcus aureus bacteria, as well as LiIF2α and LiP2a and BSA proteins as interference substances. The results of this study shows that using Chitosan-CD nanocomposite is a great strategy for developing selective turn-on probes with extraordinary accuracy and sensitivity in identifying Leishmania infantum parasite, especially in the early stages of the disease, and it is promising for the future clinical applications.
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Affiliation(s)
| | | | - Naser Abbasi
- Department of Pharmacology, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran; Biotechnology and Medicinal Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Mohammad Tavakkoli Yaraki
- School of Natural Sciences, Faculty of Science and Engineering, Macquarie University, NSW 2109, Australia.
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47
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Luangwanta T, Turren-Cruz SH, Masi S, Das Adhikari S, Recalde IB, Zanatta M, Iglesias D, Rodríguez-Pereira J, Gené-Marimon S, Martinez-Ferrero E, Kaowphong S, Palomares E, Sans V, Gualdrón-Reyes AF, Mora-Seró I. Enabling white color tunability in complex 3D-printed composites by using lead-free self-trapped exciton 2D perovskite/carbon quantum dot inks. NANOSCALE 2024; 16:10262-10272. [PMID: 38716577 DOI: 10.1039/d4nr00707g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
The generation of stable white light emission using lead-free perovskites remains a huge challenge in the development of future display and lighting technologies, due to fast material deterioration and the decrease of the color quality. In this work, we report a combination of diverse types of 2D A2SnX4 (A = bulky cation, X = Br, I) perovskites exhibiting self-trapped exciton (STE) emission and blue luminescent carbon quantum dots (CQDs), with the purpose of generating A2SnX4/CQD inks with a broadband emission in the visible region and a tunable white light color. By varying the concentration of the 2D perovskite, the white emission of the mixtures is modulated to cool, neutral, and warm tonalities, with a PL quantum yield up to 45%. From the combinations, the PEA2SnI4/CQD-based ink shows the longest stability, due to suitable surface ligand passivation provided by the capping ligands covering the CQDs, compensating the defect sites in the perovskite. Then, by incorporating the PEA2SnI4/CQDs inks into an acrylate polymer matrix, the quenching of the PL component from the perovskite was restrained, being stable for >400 h under ambient conditions and at a relative humidity of ∼50%, and allowing the preparation of complex 3D-printed composites with stable white emission tonalities. This contribution offers an application of STE-based Sn-perovskites to facilitate the future fabrication of lead-free white-light optoelectronic devices.
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Affiliation(s)
- Tawanwit Luangwanta
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
- Department of Chemistry, Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Silver-Hamil Turren-Cruz
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
- Department of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Sofia Masi
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Samrat Das Adhikari
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Ileana B Recalde
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Marcileia Zanatta
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Diego Iglesias
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Jhonatan Rodríguez-Pereira
- Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nam. Cs. Legii 565, 53002 Pardubice, Czech Republic
| | - Santi Gené-Marimon
- The Institute of Chemical Research of Catalonia - CERCA (ICIQ-CERCA), Tarragona, 43007, Spain
| | | | - Sulawan Kaowphong
- Department of Chemistry, Center of Excellence in Materials Science and Technology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Emilio Palomares
- The Institute of Chemical Research of Catalonia - CERCA (ICIQ-CERCA), Tarragona, 43007, Spain
- ICREA, Passeig Lluís Companys, 28, 08010 Barcelona, Spain
| | - Victor Sans
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
| | - Andrés F Gualdrón-Reyes
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
- Facultad de Ciencias, Instituto de Ciencias Químicas, Universidad Austral de Chile, Isla Teja, Valdivia, 5090000, Chile
| | - Iván Mora-Seró
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Castellón, Spain.
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Tsai KA, Chang YJ, Li YC, Zheng MW, Chang JC, Liu SH, Tseng SW, Li Y, Pu YC. Nitrogen Configuration Effects on Charge Carrier Dynamics in CsPbBr 3/Carbon Dots S-Scheme Heterojunction for Photocatalytic CO 2 Reduction. J Phys Chem Lett 2024; 15:5728-5737. [PMID: 38771736 DOI: 10.1021/acs.jpclett.4c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Nitrogen-doped carbon dots (NCDs) featuring primary pyrrolic N and pyridinic N dominated configurations were prepared using hydrothermal (H-NCDs) and microwave (M-NCDs) methods, respectively. These H-NCDs and M-NCDs were subsequently applied to decorate CsPbBr3 nanocrystals (CPB NCs) individually, using a ligand-assisted reprecipitation process. Both CPB/M-NCDs and CPB/H-NCDs nanoheterostructures (NHSs) exhibited S-scheme charge transfer behavior, which enhanced their performance in photocatalytic CO2 reduction and selectivity of CO2-to-CH4 conversion, compared to pristine CPB NCs. The presence of pyrrolic N configuration at the heterojunction of CPB/H-NCDs facilitated efficient S-scheme charge transfer, leading to a remarkable 43-fold increase in photoactivity. In contrast, CPB/M-NCDs showed only a modest 3-fold enhancement in photoactivity, which was attributed to electron trapping by pyridinic N at the heterojunction. The study offers crucial insights into charge carrier dynamics within perovskite/carbon NHSs at the molecular level to advance the understanding of solar fuel generation.
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Affiliation(s)
- Kai-An Tsai
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Yao-Jen Chang
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Yu-Chieh Li
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Meng-Wei Zheng
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Jui-Cheng Chang
- Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Taoyuan 320314, Taiwan
| | - Shou-Heng Liu
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Shih-Wen Tseng
- Core Facility Center of National Cheng Kung University, Tainan 70101, Taiwan
| | - Yan Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ying-Chih Pu
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
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49
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Que R, Audibert JF, Garcia-Caurel E, Plantevin O, Kalli K, Lancry M, Poumellec B, Pansu RB. Carbon Dot Synthesis in CYTOP Optical Fiber Using IR Femtosecond Laser Direct Writing and Its Luminescence Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:941. [PMID: 38869566 PMCID: PMC11173491 DOI: 10.3390/nano14110941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/09/2024] [Accepted: 05/22/2024] [Indexed: 06/14/2024]
Abstract
Luminescent carbon dots (CDs) were locally synthesized in the core of CYTOP fibers using IR femtosecond laser direct writing (FLDW), a one-step simple method serving as a post-treatment of the pristine fiber. This approach enables the creation of several types of modifications such as ellipsoid voids. The CDs and photoluminescence (PL) distribute at the periphery of the voids. The PL spectral properties were studied through the excitation/emission matrix in the visible range and excitation/emission spectra in the UV/visible range. Our findings reveal the presence of at least three distinct luminescent species, facilitating a broad excitation range extending from UV to green, and light emission spanning from blue to red. The average laser power and dose influence the quantity and ratio of these luminescent CD species. Additionally, we measured the spatially resolved lifetime of the luminescence during and after the irradiation. We found longer lifetimes at the periphery of the laser-induced modified regions and shorter ones closer to the center, with a dominant lifetime ~2 ns. Notably, unlike many other luminophores, these laser-induced CDs are insensitive to oxygen, enhancing their potential for display or data storage applications.
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Affiliation(s)
- Ruyue Que
- CNRS, ENS Paris-Saclay, CentraleSupélec, LuMIn, Université Paris-Saclay, 91190 Gif-sur-Yvette, France; (R.Q.); (J.-F.A.); (R.B.P.)
| | - Jean-Frédéric Audibert
- CNRS, ENS Paris-Saclay, CentraleSupélec, LuMIn, Université Paris-Saclay, 91190 Gif-sur-Yvette, France; (R.Q.); (J.-F.A.); (R.B.P.)
| | - Enrique Garcia-Caurel
- Institut Polytechnique de Paris, CNRS, École Polytechnique, LPICM, 91120 Palaiseau, France;
| | - Olivier Plantevin
- Laboratoire de Physique des Solides, CNRS, Université Paris-Saclay, 91405 Orsay, France;
| | - Kyriacos Kalli
- Nanophotonics Research Laboratory, Cyprus University of Technology, 3036 Limassol, Cyprus
| | - Matthieu Lancry
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France;
| | - Bertrand Poumellec
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, France;
| | - Robert B. Pansu
- CNRS, ENS Paris-Saclay, CentraleSupélec, LuMIn, Université Paris-Saclay, 91190 Gif-sur-Yvette, France; (R.Q.); (J.-F.A.); (R.B.P.)
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50
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Hazra N, Ray R, Banerjee A. Rapid targeting and imaging of mitochondria via carbon dots using an amino acid-based amphiphile as a carrier. NANOSCALE 2024; 16:9827-9835. [PMID: 38695525 DOI: 10.1039/d4nr00665h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Green-fluorescent biocompatible carbon dots with a quantum yield of 40% were successfully synthesized through a solvothermal process and then they are comprehensively characterized. The carbon dots showed a negatively charged surface owing to the presence of carboxylic groups. This negative surface charge hinders the effective targeting and imaging of mitochondria. To address this limitation, a new approach is developed in this study. An amphiphile containing phenylalanine, with a positively charged polar head consisting of triphenylphosphine and a hydrophobic aliphatic tail, was designed, synthesized, purified, and characterized. This amphiphile formed spherical micelle-type nanostructures in an aqueous medium in the aggregated state. Although these nanoprobes lack inherent fluorescence, they exhibited the capability to image mitochondria when their spherical micelle-type nanostructures were decorated with negatively charged fluorescent nanocarbon dots in both cancerous (KB cells) and non-cancerous (CHO cells) cell lines. Notably, carbon dots without the amphiphile failed to penetrate the cell membrane as they exhibited significantly low emission inside the cell. This study extensively explored the cell entry mechanism of the hybrid nanoprobes. The photophysical changes and the interaction between the negatively charged carbon dots and the positively charged nanospheres of the amphiphile were also analyzed in this study.
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Affiliation(s)
- Niladri Hazra
- School of Biological Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
| | - Reeddhi Ray
- School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Arindam Banerjee
- School of Biological Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
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