1
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Pu Q, Wang C, Yin X, Ye N, Zhang L, Xiang Y. A ratiometric fluorescent dark box and smartphone integrated portable sensing platform based on hydrogen bonding induction for on-site determination of enrofloxacin. Food Chem 2024; 455:139876. [PMID: 38823143 DOI: 10.1016/j.foodchem.2024.139876] [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: 03/14/2024] [Revised: 05/15/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
Enrofloxacin (ENR) residues in animal-derived food and water threaten human health. Simple, low-cost and on-site detection methods are urgently needed. Blue emitting carbon quantum dots (CQDs) and orange rhodamine B (RhB) were used as recognition and reference signals, respectively, to construct a ratiometric fluorescence sensor. After the addition of ENR, the color of the sensor changed from orange to blue because hydrogen bonding induced a considerable increase in CQDs fluorescence. Based on this mechanism, a simple and low cost on-site portable sensing platform was constructed, which integrated a stable UV light strip and a smartphone with voice-controlled phototaking function and an RGB app. The t-test results of spiked ENR recoveries for diluted milk, honey and drinking water revealed no significant differences between the ratiometric fluorescent sensor and portable sensing platform. Thus, this portable sensing platform provides a novel strategy for on-site quantification of quinolone antibiotics in foodstuffs and environmental water.
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Affiliation(s)
- Qi Pu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Chumeng Wang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Xinyue Yin
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Nengsheng Ye
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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2
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Zhang C, Chen M, Pan Y, Li Y, Wang K, Yuan J, Sun Y, Zhang Q. Carbon Nanodots Memristor: An Emerging Candidate toward Artificial Biosynapse and Human Sensory Perception System. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207229. [PMID: 37072642 PMCID: PMC10238223 DOI: 10.1002/advs.202207229] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/09/2023] [Indexed: 05/03/2023]
Abstract
In the era of big data and artificial intelligence (AI), advanced data storage and processing technologies are in urgent demand. The innovative neuromorphic algorithm and hardware based on memristor devices hold a promise to break the von Neumann bottleneck. In recent years, carbon nanodots (CDs) have emerged as a new class of nano-carbon materials, which have attracted widespread attention in the applications of chemical sensors, bioimaging, and memristors. The focus of this review is to summarize the main advances of CDs-based memristors, and their state-of-the-art applications in artificial synapses, neuromorphic computing, and human sensory perception systems. The first step is to systematically introduce the synthetic methods of CDs and their derivatives, providing instructive guidance to prepare high-quality CDs with desired properties. Then, the structure-property relationship and resistive switching mechanism of CDs-based memristors are discussed in depth. The current challenges and prospects of memristor-based artificial synapses and neuromorphic computing are also presented. Moreover, this review outlines some promising application scenarios of CDs-based memristors, including neuromorphic sensors and vision, low-energy quantum computation, and human-machine collaboration.
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Affiliation(s)
- Cheng Zhang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Mohan Chen
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Yelong Pan
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Yang Li
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy ApplicationSchool of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Kuaibing Wang
- Jiangsu Key Laboratory of Pesticide SciencesDepartment of ChemistryCollege of ScienceNanjing Agricultural UniversityNanjing210095China
| | - Junwei Yuan
- School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Yanqiu Sun
- School of Chemistry and Life SciencesSuzhou University of Science and TechnologySuzhouJiangsu215009China
| | - Qichun Zhang
- Department of Materials Science and EngineeringDepartment of Chemistry and Center of Super‐Diamond and Advanced Films (COSDAF)City University of Hong Kong83 Tat Chee AvenueHong Kong999077China
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3
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Zhang H, Chen Y, Pan Y, Bao L, Ge JY. Multicomponent hydroxides supported Cu/Cu2O nanoparticles for high efficient photocatalytic ammonia synthesis. J Colloid Interface Sci 2023; 642:470-478. [PMID: 37023518 DOI: 10.1016/j.jcis.2023.03.187] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/23/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023]
Abstract
Environmentally friendly photocatalytic N2 fixation process has attracted considerable attention. Developing efficient photocatalysts with high electron-hole separation rates and gas adsorption capacities remains quite challenging. Herein, a facile fabrication strategy of Cu-Cu2O and multicomponent hydroxide S-scheme heterojunctions with carbon dot charge mediators is reported. The rational heterostructurebrings excellent N2 absorption ability and high photoinduced electron/hole separation efficiency, and the ammonia produced yield reach above 210 µmol·gcal-1·h-1 during the nitrogen photofixation process. More superoxide and hydroxyl radicals are generated simultaneously in the as-prepared samples under light illumination. This work offers a reasonable construction method to further develop suitable photocatalysts for ammonia synthesis.
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4
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Tammina SK, Khan A, Rhim JW. Advances and prospects of carbon dots for microplastic analysis. CHEMOSPHERE 2023; 313:137433. [PMID: 36460157 DOI: 10.1016/j.chemosphere.2022.137433] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/16/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Microplastics have become the world's most emerging pollutants today due to the ubiquitous use of plastics in everyday life and their ability to migrate from micro to nanoscale to every corner of the natural world, leading to ecological imbalances and global catastrophes. However, a standardized method for separating and analyzing microplastics from actual food or environmental samples has not been established. Therefore, it is necessary to develop a simple, fast, cost-effective, and accurate method that can accurately measure the degree of contamination of microplastics. As one of these methods, fluorometry has been proposed as a cost-effective method to detect, quantify and differentiate individual plastic particles. Therefore, this review discussed the technique for analyzing microplastics using fluorescent carbon dots (CDs). This review provided an overview of the impact of microplastics and the feasibility of using CDs to detect and analyze microplastics. In particular, this review will discuss novel microplastic analysis methods using CD and future application studies. The method using CDs will overcome the limitations of current microplastic analysis technology and may become a new method for detecting and analyzing microplastics.
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Affiliation(s)
- Sai Kumar Tammina
- Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Ajahar Khan
- Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jong-Whan Rhim
- Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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5
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Comprehensive study upon physicochemical properties of bio-ZnO NCs. Sci Rep 2023; 13:587. [PMID: 36631546 PMCID: PMC9834250 DOI: 10.1038/s41598-023-27564-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/04/2023] [Indexed: 01/12/2023] Open
Abstract
In this study, for the first time, the comparison of commercially available chemical ZnO NCs and bio-ZnO NCs produced extracellularly by two different probiotic isolates (Latilactobacillus curvatus MEVP1 [OM736187] and Limosilactobacillus fermentum MEVP2 [OM736188]) were performed. All types of ZnO formulations were characterized by comprehensive interdisciplinary approach including various instrumental techniques in order to obtain nanocomposites with suitable properties for further applications, i.e. biomedical. Based on the X- ray diffraction analysis results, all tested nanoparticles exhibited the wurtzite structure with an average crystalline size distribution of 21.1 nm (CHEM_ZnO NCs), 13.2 nm (1C_ZnO NCs) and 12.9 nm (4a_ZnO NCs). The microscopy approach with use of broad range of detectors (SE, BF, HAADF) revealed the core-shell structure of bio-ZnO NCs, compared to the chemical one. The nanoparticles core of 1C and 4a_ZnO NCs are coated by the specific organic deposit coming from the metabolites produced by two probiotic strains, L. fermentum and L. curvatus. Vibrational infrared spectroscopy, photoluminescence (PL) and mass spectrometry (LDI-TOF-MS) have been used to monitor the ZnO NCs surface chemistry and allowed for better description of bio-NCs organic coating composition (amino acids residues). The characterized ZnO formulations were then assessed for their photocatalytic properties against methylene blue (MB). Both types of bio-ZnO NCs exhibited good photocatalytic activity, however, the effect of CHEM_ZnO NCs was more potent than bio-ZnO NCs. Finally, the colloidal stability of the tested nanoparticles were investigated based on the zeta potential (ZP) and hydrodynamic diameter measurements in dependence of the nanocomposites concentration and investigation time. During the biosynthesis of nano-ZnO, the increment of pH from 5.7 to around 8 were observed which suggested possible contribution of zinc aquacomplexes and carboxyl-rich compounds resulted in conversion of zinc tetrahydroxy ion complex to ZnO NCs. Overall results in present study suggest that used accessible source such us probiotic strains, L. fermentum and L. curvatus, for extracellular bio-ZnO NCs synthesis are of high interest. What is important, no significant differences between organic deposit (e.g. metabolites) produced by tested strains were noticed-both of them allowed to form the nanoparticles with natural origin coating. In comparison to chemical ZnO NCs, those synthetized via microbiological route are promising material with further biological potential once have shown high stability during 7 days.
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Jin XJ, Tan L, Zhao ZQ, Li MC, Zhou QY, Zhang JJ, Lv TB, Deng Q, Wang J, Zeng Z, Deng S, Dai GP. Facile synthesis of graphene quantum dots with red emission and high quantum yield. NEW J CHEM 2023. [DOI: 10.1039/d2nj04491a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Preparation of GQDs for application in cell imaging.
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Affiliation(s)
- Xin-Jian Jin
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Long Tan
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China
| | - Zhi-Qing Zhao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Meng-Chao Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qun-Yi Zhou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jing-Jian Zhang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Tong-Bao Lv
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qiang Deng
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jun Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Zheling Zeng
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Shuguang Deng
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA
| | - Gui-Ping Dai
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
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7
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Gao Y, Liang S, Zhao S, Gao W, Li Z, Wang M, Li H, He X, Cong R, Diao H, Su C, Xie X. An intelligent cooling material modified with carbon dots for evaporative cooling and UV absorption. NANOSCALE ADVANCES 2022; 4:4169-4174. [PMID: 36285225 PMCID: PMC9514565 DOI: 10.1039/d2na00380e] [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: 06/15/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
The emergence of cooling technology has brought about huge social benefits to society, but it is also accompanied by the serious problem of energy consumption. In countries close to the equator, intense solar radiation is accompanied by unbearable high temperatures and strong ultraviolet radiation. Therefore, we prepared a simple hydrogel with good evaporative cooling, which can work continuously and has good UV absorption, to solve the indoor cooling and UV radiation problems. Polyacrylamide (PAM) in the hydrogel provides a mechanically strong backbone, and polyethylene glycol (PEG) slows water loss and provides the hydrogel with the ability to reflect infrared light. Lithium bromide (LiBr) is a highly efficient water vapor absorbent, which can provide the hydrogel with water regeneration capability. Carbon dots (CDs) can provide excellent UV absorption for hydrogels, and CDs (4.28 kJ kg-1 K-1) have a higher specific heat capacity than water (4.20 kJ kg-1 K-1), which can store more heat for a better indoor cooling effect. The composite hydrogel has a good prospect of application in the windows of residential and high-rise buildings.
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Affiliation(s)
- Yi Gao
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University Nanning 530004 Guangxi China
- Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University Nanning 530004 Guangxi China
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Shaofeng Liang
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Shuangliang Zhao
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University Nanning 530004 Guangxi China
- Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University Nanning 530004 Guangxi China
- Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes Nanning 530004 Guangxi China
- College of Chemistry and Chemical Engineering, Guangxi University Nanning 530004 Guangxi China
| | - Wei Gao
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University Nanning 530004 Guangxi China
- Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University Nanning 530004 Guangxi China
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
- Guangxi Engineering and Technology Research Center for High Quality Structural Panels from Biomass Wastes Nanning 530004 Guangxi China
| | - Zequan Li
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Muqun Wang
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Hong Li
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Xiangning He
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Riyao Cong
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Hailin Diao
- Forestry College, Guangxi University Nanning 530004 Guangxi China
| | - Chuwang Su
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 Guangxi China
| | - Xiaoying Xie
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University Nanning 530004 Guangxi China
- Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University Nanning 530004 Guangxi China
- School of Civil Engineering and Architecture, Guangxi University Nanning 530004 Guangxi China
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8
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Trapani D, Macaluso R, Crupi I, Mosca M. Color Conversion Light-Emitting Diodes Based on Carbon Dots: A Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5450. [PMID: 35955386 PMCID: PMC9369759 DOI: 10.3390/ma15155450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 05/08/2023]
Abstract
This paper reviews the state-of-the-art technologies, characterizations, materials (precursors and encapsulants), and challenges concerning multicolor and white light-emitting diodes (LEDs) based on carbon dots (CDs) as color converters. Herein, CDs are exploited to achieve emission in LEDs at wavelengths longer than the pump wavelength. White LEDs are typically obtained by pumping broad band visible-emitting CDs by an UV LED, or yellow-green-emitting CDs by a blue LED. The most important methods used to produce CDs, top-down and bottom-up, are described in detail, together with the process that allows one to embed the synthetized CDs on the surface of the pumping LEDs. Experimental results show that CDs are very promising ecofriendly candidates with the potential to replace phosphors in traditional color conversion LEDs. The future for these devices is bright, but several goals must still be achieved to reach full maturity.
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Affiliation(s)
| | | | | | - Mauro Mosca
- Thin-Films Laboratory, Department of Engineering, University of Palermo, Viale delle Scienze, Bdg. 9, I-90129 Palermo, Italy
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9
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M A, John BK, Chacko AR, Mohan C, Mathew B. A Review on Carbon Quantum Dot Based Semiconductor Photocatalysts for the Abatement of Refractory Pollutants. Chemphyschem 2022; 23:e202100873. [PMID: 35320623 DOI: 10.1002/cphc.202100873] [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: 12/08/2021] [Revised: 03/15/2022] [Indexed: 11/10/2022]
Abstract
Photocatalysis is a green approach frequently utilised to eliminate a variety of environmentally hazardous refractory pollutants. Accordingly, the modification of semiconductor photocatalysts with Carbon Quantum Dots (CQDs) is of great importance for the treatment of such pollutants due to their attractive physical and chemical properties. CQDs are a perfect candidate to handle photocatalysts of high-performance since they operate as co-catalysts and as visible light harvesters. The higher separation rate of electron-hole pairs in the photocatalytic system is attributable to better photodegradation efficiency. This review classifies CQD based photocatalysts as pure, doped and composite materials and discusses the specific advantages of CQDs in visible light-driven photocatalysis. In this work, the versatile roles of CQDs in CQD-based photocatalytic systems are thoroughly discussed and s u mmarised.
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Affiliation(s)
- Athulya M
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Bony K John
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Anu Rose Chacko
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Chitra Mohan
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Beena Mathew
- Mahatma Gandhi University, School Of Chemical Sciences, Priyadarshini Hills PO, Kottayam, 686560, Kottayam, INDIA
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10
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Yang Y, Wang C, Shu Q, Xu N, Qi S, Zhuo S, Zhu C, Du J. Facile one-step fabrication of Cu-doped carbon dots as a dual-selective biosensor for detection of pyrophosphate ions and measurement of pH. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120681. [PMID: 34894564 DOI: 10.1016/j.saa.2021.120681] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
High-performance determination of pyrophosphate ions (PPi) and pH is an important goal in biological systems. In this work, Cu-doped carbon dots (Cu-CDs) were synthesized rapidly and simply via a one-pot hydrothermal method. The as-obtained Cu-CDs, with an average size of 2.55 nm, exhibit an excitation-independent fluorescence emission and possess desirable functional groups of carboxyl and amine, which can be served as fluorescence nanoprobes for detection of PPi based on surface passivation. Under the optimal condition, the linear range for detection of PPi was 0.05-20 µM, and the corresponding limit of detection (LOD) was 0.013 µM, indicative of a promising assay for the PPi. Moreover, the fluorescent intensity of the Cu-CDs is linear against pH value from 6 to 8.7 in buffer solution, suggesting the feasibility as a pH sensor. The synthesized Cu-CDs coated fluorescent paper indeed can monitor pH in urine with satisfaction by naked eyes through ultraviolet irradiation. The successful detection of PPi and the visual detection of pH value suggest a highly promising application of Cu-CDs in the field of biosensing.
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Affiliation(s)
- Ying Yang
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Chaofeng Wang
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Qin Shu
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Na Xu
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Shuangqing Qi
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Shujuan Zhuo
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Changqing Zhu
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | - Jinyan Du
- Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.
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11
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Qi C, Wang H, Yang A, Wang X, Xu J. Facile Fabrication of Highly Fluorescent N-Doped Carbon Quantum Dots Using an Ultrasonic-Assisted Hydrothermal Method: Optical Properties and Cell Imaging. ACS OMEGA 2021; 6:32904-32916. [PMID: 34901641 PMCID: PMC8655932 DOI: 10.1021/acsomega.1c04903] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/08/2021] [Indexed: 05/03/2023]
Abstract
Fluorescent N-doped carbon nanodots (CNDs) are a type of environmentally friendly nanomaterial that is promising for application in cell imaging and optoelectronics. In this paper, a natural amino acid (l-glutamic acid) was used as a precursor, and two different morphological and structured N-doped carbon quantum dots (CQDs) were synthesized via a one-step ultrasonic-assisted hydrothermal method at 230 and 250 °C. Various microscopy and spectroscopy techniques were employed to characterize the morphology, structure, optical properties, and stability of the CQDs. The results showed that N-CQDs-1 are new CNDs composed of amorphous carbon with a large amount of pyroglutamic acid, and N-CQDs-2 are composed of pure amorphous carbon. The CQDs exhibit excellent optical properties, such as 40.5% quantum yield, strong photobleaching resistance, and superior photostability. Combining the fluorescence lifetimes and radiative and non-radiative decay constants, the photoluminescence mechanism of the CQDs was qualitatively explained. The two CQDs were used for BV2 cell imaging and showed good results, implying the ultrasonic-assisted hydrothermal approach as a facile method to obtain structure- and morphology-controllable N-doped CQDs with prospect for application in cell imaging.
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Affiliation(s)
- Chong Qi
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Huaidong Wang
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Ailing Yang
- College
of Physics & Optoelectronic Engineering, Ocean University of China, Qingdao 266100, Shandong Province, China
| | - Xiaoxu Wang
- College
of Food Science and Engineering, Ocean University
of China, Qingdao 266033, Shandong Province, China
| | - Jie Xu
- College
of Food Science and Engineering, Ocean University
of China, Qingdao 266033, Shandong Province, China
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12
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Hasanzadeh A, Radmanesh F, Hosseini ES, Hashemzadeh I, Kiani J, Nourizadeh H, Naseri M, Fatahi Y, Chegini F, Madjd Z, Beyzavi A, Kowalski PS, Karimi M. Highly Photoluminescent Nitrogen- and Zinc-Doped Carbon Dots for Efficient Delivery of CRISPR/Cas9 and mRNA. Bioconjug Chem 2021; 32:1875-1887. [PMID: 34278778 DOI: 10.1021/acs.bioconjchem.1c00309] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Safe and efficient delivery of CRISPR/Cas9 systems is still a challenge. Here we report the development of fluorescent nitrogen- and zinc-doped carbon dots (N-Zn-doped CDs) using one-step microwave-aided pyrolysis based on citric acid, branched PEI25k, and different zinc salts. These versatile nanovectors with a quantum yield of around 60% could not only transfect large CRISPR plasmids (∼9 kb) with higher efficiency (80%) compared to PEI25k and lipofectamine 2000 (Lipo 2K), but they also delivered mRNA into HEK 293T cells with the efficiency 20 times greater than and equal to that of PEI25k and Lipo 2K, respectively. Unlike PEI25k, N-Zn-doped CDs exhibited good transfection efficiency even at low plasmid doses and in the presence of 10% fetal bovine serum (FBS). Moreover, these nanovectors demonstrated excellent efficiency in GFP gene disruption by transferring plasmid encoding Cas9 and sgRNA targeting GFP as well as Cas9/sgRNA ribonucleoproteins into HEK 293T-GFP cells. Hence, N-Zn-doped CDs with remarkable photoluminescence properties and high transfection efficiency in the delivery of both CRISPR complexes and mRNA provide a promising platform for developing safe, efficient, and traceable delivery systems for biological research.
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Affiliation(s)
- Akbar Hasanzadeh
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Fatemeh Radmanesh
- Uro-Oncology Research Center, Tehran University of Medical Sciences, Tehran 1417613151, Iran.,Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran
| | - Elaheh Sadat Hosseini
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Iman Hashemzadeh
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Jafar Kiani
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Helena Nourizadeh
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Marzieh Naseri
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Yousef Fatahi
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1417613151, Iran.,Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 1417613151, Iran.,Universal Scientific Education and Research Network (USERN), Tehran 1417755331, Iran
| | - Fateme Chegini
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Zahra Madjd
- Oncopathology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Molecular Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran
| | - Ali Beyzavi
- Department of Mechanical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Piotr S Kowalski
- School of Pharmacy, University College Cork, Cavanagh Pharmacy Building, Cork T12 YN60, Ireland
| | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran 1449614535, Iran.,Oncopathology Research Center, Iran University of Medical Sciences, Tehran 1449614535, Iran.,Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran 1417613151, Iran.,Applied Biotechnology Research Centre, Tehran Medical Science, Islamic Azad University, Tehran 1916893813, Iran
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13
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An intermolecular hydrogen-bond-induced quench-type Ru(dcbpy) 32+/TPA electrochemiluminescence system by nitrogen-doped carbon quantum dots. Biosens Bioelectron 2021; 184:113232. [PMID: 33878593 DOI: 10.1016/j.bios.2021.113232] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/15/2021] [Accepted: 04/03/2021] [Indexed: 01/06/2023]
Abstract
Here, we show that nitrogen-doped carbon quantum dots (NCQDs) strongly inhibits the anodic electrochemiluminescence (ECL) signal of a tris(4,4'-dicarboxylic acid-2,2'-bipyridyl) ruthenium(II) (Ru(dcbpy)32+)/tripropylamine (TPA) aqueous system. To determine the ECL-quenching mechanism, we used photoluminescence spectroscopy, UV-Visible absorption spectroscopy and dynamic simulation technology. Quenching of the ECL signal of Ru(dcbpy)32+/TPA by NCQDs was predominantly attributed to the interaction between Ru(dcbpy)32+ and NCQDs rather than that between TPA and NCQDs. Specifically, when Ru(dcbpy)32+ and NCQDs were in aqueous solution together, the carboxyl (-COOH) groups of Ru(dcbpy)32+ were in contact with oxygen- and nitrogen-containing groups on the surface of NCQDs and formed intermolecular hydrogen bonds. This process involved energy transfer from the excited-state Ru(dcbpy)32+ to the intermolecular hydrogen bonds, thus resulting in a decrease in the Ru(dcbpy)32+ ECL signal. On this basis, a quenching-type ECL sensor for the quantification of NCQDs was fabricated. The sensor had a wide linear range and an estimated detection limit of 0.0012 mg mL-1, as well as excellent stability and selectivity. Satisfactory recoveries of 97.0-99.5% were obtained using the ECL sensor to quantify NCQDs in tap water. NCQDs could potentially be used as a quenching probe of Ru(dcbpy)32+ to construct various biosensors with widespread applications in the sensing field.
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14
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Yang P, Wang R, Zhang H, Zhao J, Wang P, Shi H, Yang H. A semi-crystalline carbonaceous structure as a wide-spectrum-responsive photocatalyst for efficient redox catalysis. Chem Commun (Camb) 2021; 57:5086-5089. [PMID: 33899849 DOI: 10.1039/d1cc01116b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we synthesized an oxygen- and nitrogen-containing carbonaceous structure (ONCS). This ONCS possessed exceptional light-harvesting ranging from the visible to NIR light region. Characterization results confirmed that the ONCS was an n-type semiconductor. The ONCS can efficiently catalyze hydrogen photosynthesis and benzyl alcohol oxidation under visible light, even under NIR light irradiation.
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Affiliation(s)
- Pengju Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Ruonan Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Hongxia Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Jianghong Zhao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - Peng Wang
- School of Material and Chemical Engineering, Xuzhou Institute of Technology, Xuzhou 221018, China
| | - Hu Shi
- School of Chemistry and Chemical Engineering & Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Hengquan Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
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15
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Liu X, Li L, Luo L, Bi X, Yan H, Li X, You T. Induced self-enhanced electrochemiluminescence aptamer sensor for 17β-estradiol detection based on nitrogen-doped carbon quantum dots as Ru(dcbpy) 32+ coreactant: What role of intermolecular hydrogen bonds play in the system? J Colloid Interface Sci 2021; 586:103-109. [PMID: 33160631 DOI: 10.1016/j.jcis.2020.10.074] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 02/06/2023]
Abstract
Herein, an induced self-enhanced electrochemiluminescence (ECL) sensor with superior ECL performances was simply fabricated by just dropping the ECL reagent (tris(4,4'-dicarboxylicacid-2,2'-bipyridyl) ruthenium (II) dichloride, Ru(dcbpy)3Cl2) and coreactant (nitrogen-doped carbon quantum dots, NCQDs) pair onto the surface of glassy carbon electrode. In this strategy, based on the carboxyl (-COOH) groups in Ru(dcbpy)32+ and oxygen, nitrogen-containing groups on NCQDs surface, an intermolecular hydrogen bonds-induced self-enhanced ECL composite was generated in the solid contact layer for the first time. Since Ru(dcbpy)32+ and NCQDs were co-existing in the same composite, the electron-transfer distance between them was shortened and the energy loss was decreased, thereby higher ECL efficiency was acquired. This working process greatly avoided the introduction of signal amplifier and simplified the experimental operation. On this basis, 17β-estradiol (E2) was selected as a target model to fabricate a self-enhanced ECL aptamer sensor for the investigation of its analytical performances. Resultantly, excellent detection properties of E2, including wider linear range of 1.0 × 10-14 - 1.0 × 10-6 mol L-1 and lower detection limit of 1.0 × 10-15 mol L-1 with superior selectivity, were successfully achieved. Finally, E2 spiked into milk powder was quantified to assess the practicability of this sensor. Prospectively, this strategy could be extensively applied for other analytes determination by adjusting the corresponding target aptamers.
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Affiliation(s)
- Xiaohong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Libo Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
| | - Lijun Luo
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Xiaoya Bi
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hui Yan
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xia Li
- Department of Chemistry, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
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16
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Zheng X, Qin K, He L, Ding Y, Luo Q, Zhang C, Cui X, Tan Y, Li L, Wei Y. Novel fluorescent nitrogen-doped carbon dots derived from Panax notoginseng for bioimaging and high selectivity detection of Cr 6. Analyst 2021; 146:911-919. [PMID: 33237046 DOI: 10.1039/d0an01599g] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Carbon dots (CDs) and photoluminescent carbon dots (Pn-CDs) are promising nanomaterials due to their bioimaging applications and have attracted considerable attention because of their excellent stability, good biocompatibility, and low biotoxicity. Here, the Pn-CDs and highly fluorescent nitrogen-doped CDs (Pn N-CDs) derived from Panax notoginseng were successfully synthesized by a simple hydrothermal method. Pn N-CDs exhibit optical properties and stability superior to those of Pn-CDs and can be better used as fluorescent dyes and probes in biological imaging. The obtained Pn N-CDs can be effectively applied to the imaging of bacteria, fungi, plant cells, and protozoa. In addition, Pn N-CDs can perform specific staining on the membranes of all tested cells. The in vivo imaging of mice revealed that Pn N-CDs exhibit nontoxicity and good biocompatibility and biodistribution. Furthermore, Pn N-CDs can be utilized as fluorescent probes for the rapid and highly selective detection of Cr6+. Hence, a simple, cost-effective, scalable, and green synthetic approach based on traditional Chinese medicine-derived CDs can be used to develop biolabeling, membrane targeting, and optical sensing probes.
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Affiliation(s)
- Xiaodan Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.
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17
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Yang C, Li R, Zhang J, Cao ZK, Liu CL, Zhang M, Han WP, Ramakrishna S, Long YZ. Dual information encryption of carbon dots endowed with recoverable functions after interception. NEW J CHEM 2021. [DOI: 10.1039/d0nj06251k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hiding real information in deluded information can mislead others.
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Affiliation(s)
- Chen Yang
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Ru Li
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Jun Zhang
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Zhi-Kai Cao
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Chun-Li Liu
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Meng Zhang
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Wen-Peng Han
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
| | - Seeram Ramakrishna
- Center for Nanofibers & Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore 117574
- Singapore
| | - Yun-Ze Long
- Collaborative Innovation Center for Nanomaterials & Devices
- College of Physics
- Qingdao University
- Qingdao 266071
- P. R. China
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18
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Liu J, Qin L, Tang M, Kang SZ, Li X. Bi-functional gold nanoparticles composites regulated by graphene quantum dots with various surface states. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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19
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Garrido M, Gualandi L, Di Noja S, Filippini G, Bosi S, Prato M. Synthesis and applications of amino-functionalized carbon nanomaterials. Chem Commun (Camb) 2020; 56:12698-12716. [PMID: 33016290 DOI: 10.1039/d0cc05316c] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Carbon-based nanomaterials (CNMs) have attracted considerable attention in the scientific community both from a scientific and an industrial point of view. Fullerenes, carbon nanotubes (CNTs), graphene and carbon dots (CDs) are the most popular forms and continue to be widely studied. However, the general poor solubility of many of these materials in most common solvents and their strong tendency to aggregate remains a major obstacle in practical applications. To solve these problems, organic chemistry offers formidable help, through the exploitation of tailored approaches, especially when aiming at the integration of nanostructures in biological systems. According to our experience with carbon-based nanostructures, the introduction of amino groups is one of the best trade-offs for the preparation of functionalized nanomaterials. Indeed, amino groups are well-known for enhancing the dispersion, solubilization, and processability of materials, in particular of CNMs. Amino groups are characterized by basicity, nucleophilicity, and formation of hydrogen or halogen bonding. All these features unlock new strategies for the interaction between nanomaterials and other molecules. This integration can occur either through covalent bonds (e.g., via amide coupling) or in a supramolecular fashion. In the present Feature Article, the attention will be focused through selected examples of our approach to the synthetic pathways necessary for the introduction of amino groups in CNMs and the subsequent preparation of highly engineered ad hoc nanostructures for practical applications.
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Affiliation(s)
- Marina Garrido
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy.
| | - Lorenzo Gualandi
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy.
| | - Simone Di Noja
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy.
| | - Giacomo Filippini
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy.
| | - Susanna Bosi
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy.
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, CENMAT, Center of Excellence for Nanostructured Materials, INSTM UdR, Trieste, University of Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy. and Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón 182, 20014, Donostia San Sebastián, Spain and Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain
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20
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Facile Synthesis of "Boron-Doped" Carbon Dots and Their Application in Visible-Light-Driven Photocatalytic Degradation of Organic Dyes. NANOMATERIALS 2020; 10:nano10081560. [PMID: 32784435 PMCID: PMC7466398 DOI: 10.3390/nano10081560] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/30/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023]
Abstract
Carbon dots (C-dots) were facilely fabricated via a hydrothermal method and fully characterized. Our study shows that the as-synthesized C-dots are nontoxic, negatively charged spherical particles (average diameter 4.7 nm) with excellent water dispersion ability. Furthermore, the C-dots have a rich presence of surface functionalities such as hydroxyls and carboxyls as well as amines. The significance of the C-dots as highly efficient photocatalysts for rhodamine B (RhB) and methylene blue (MB) degradation was explored. The C-dots demonstrate excellent photocatalytic activity, achieving 100% of RhB and MB degradation within 170 min. The degradation rate constants for RhB and MB were 1.8 × 10−2 and 2.4 × 10−2 min−1, respectively. The photocatalytic degradation performances of the C-dots are comparable to those metal-based photocatalysts and generally better than previously reported C-dots photocatalysts. Collectively considering the excellent photocatalytic activity toward organic dye degradation, as well as the fact that they are facilely synthesized with no need of further doping, compositing, and tedious purification and separation, the C-dots fabricated in this work are demonstrated to be a promising alternative for pollutant degradation and environment protection.
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21
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Off-on detection of glutathione based on the nitrogen, sulfur codoped carbon quantum dots@MnO nano-composite in human lung cancer cells and blood serum. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112558] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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22
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Sharma N, Das GS, Yun K. Green synthesis of multipurpose carbon quantum dots from red cabbage and estimation of their antioxidant potential and bio-labeling activity. Appl Microbiol Biotechnol 2020; 104:7187-7200. [PMID: 32572575 DOI: 10.1007/s00253-020-10726-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 05/28/2020] [Accepted: 06/07/2020] [Indexed: 01/07/2023]
Abstract
We present a green synthesis of fluorescent carbon quantum dots (CQDs) by using red cabbage (rc) and a one-step hydrothermal approach. The rcCQDs were characterized by various techniques such as UV-visible spectroscopy, transmission electron microscopy (TEM), high-resolution TEM, Fourier-transform infrared spectroscopy, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy. The synthesized rcCQDs exhibited an average size of 3 nm, measured by TEM, blue fluorescence, and a quantum yield of 8.3%. The highest emission band was observed at approximately 402 nm when excited at 330 nm. The rcCQDs exhibited strong antioxidant activities by scavenging 61, 56, and 91% against 2, 2-diphenyl-1-picrylhydrazyl, hydroxyl, and potassium permanganate radicals, respectively. The scavenging activity of rcCQDs was comparable with that of standard antioxidant L-ascorbic acid. Cell Counting Kit (CCK)-8 assay depicted superior bio-compatibility and negligible cytotoxicity of rcCQDs on SH-SY5Y neuroblastoma cells. They were used as a fluorescent probe for bio-labeling of Escherichia coli and Staphylococcus aureus. The viabilities of the labeled bacterial cells were analyzed by AFM and UV-visible spectroscopy. Furthermore, the rcCQDs were utilized as a fluorescent ink, an alternative to pens, and maybe suitable for paints and varnish agents. This study provides detailed mechanistic insights into the antioxidant activity of as-synthesized rcCQDs, which suggest the practical applicability of CQDs for bio-medical applications. Key points • Carbon quantum dots were prepared from red cabbage using the hydrothermal method. • The scavenging activity of rcCQDs was evaluated for DPPH, OH, and KMnO4radicals. • The rcCQDs were used for the labeling of foodborne bacteria. • The rcCQDs could be utilized as fluorescent ink. Graphical abstract Schematic representation of CQDs prepared from red cabbage (rc) with multifunctional applications.
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Affiliation(s)
- Neha Sharma
- Department of Bio-nanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Gouri Sankar Das
- Department of Bio-nanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Kyusik Yun
- Department of Bio-nanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea.
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23
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Lan X, Ren H, Yang X, Wang J, Gao P, Zhang Y. A facile microwave-assisted synthesis of highly crystalline red carbon dots by adjusting the reaction solvent for white light-emitting diodes. NANOTECHNOLOGY 2020; 31:215704. [PMID: 32000153 DOI: 10.1088/1361-6528/ab71b6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Microwave approach has been widely used for the synthesis of fluorescent carbon dots (CDs) due to its advantages of short reaction time and homogeneous heating. Currently, it is still difficult to synthesize red light-emitting CDs (R-CDs) via the microwave-assisted method at atmospheric pressure. Herein, we report a solvent-controlled synthesis of R-CDs using domestic microwave. As a result, for an ammonium citrate tribasic, formamide and glycerol blend reaction solvent, the R-CDs with emission peak of 622 nm were achieved and exhibited a photoluminescence (PL) quantum yield of 37.4% and excitation-independent PL emission spectrum. During the formation process of R-CDs, glycerol and formamide not only promote the carbonization of ammonium citrate tribasic, but can also enhance the crystalline nature of CDs. Finally, the warm white light-emitting diode (WLED) with a high colour rendering index (CRI) of 90.9 and Commission Internationale de L'Eclairage (CIE) coordinates of (0.344, 0.333) was realized by combining conventional yellow YAG:Ce phosphor and R-CDs/mesoporous silica (MPS) composites with a blue chip. This result demonstrates a low-cost R-CD synthetic method for potential substitution for red phosphor materials in solid-state lighting applications.
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Affiliation(s)
- Xuyan Lan
- Institute of Semiconductor Science and Technology, Guangdong Engineering Technology Research Center of Low Carbon and Advanced Energy Materials, South China Normal University, Guangzhou, 510631, People's Republic of China
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Sivasankarapillai VS, Vishnu Kirthi A, Akksadha M, Indu S, Dhiviya Dharshini U, Pushpamalar J, Karthik L. Recent advancements in the applications of carbon nanodots: exploring the rising star of nanotechnology. NANOSCALE ADVANCES 2020; 2:1760-1773. [PMID: 36132507 PMCID: PMC9419731 DOI: 10.1039/c9na00794f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 03/30/2020] [Indexed: 06/01/2023]
Abstract
Nanoparticles possess fascinating properties and applications, and there has been increasing critical consideration of their use. Because carbon is a component with immaterial cytotoxicity and extensive biocompatibility with different components, carbon nanomaterials have a wide scope of potential uses. Carbon nanodots are a type of carbon nanoparticle that is increasingly being researched because of their astounding properties such as extraordinary luminescence, simplicity of amalgamation and surface functionalization, and biocompatibility. Because of these properties, carbon nanodots can be used as material sensors, as indicators in fluorescent tests, and as nanomaterials for biomedical applications. In this review, we report on the ongoing and noteworthy utilization of carbon quantum dots such as bioimaging tests and photocatalytic applications. In addition, the extension and future components of these materials, which can be investigated for new potential applications, are discussed.
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Affiliation(s)
| | - Arivarasan Vishnu Kirthi
- National Centre for Nanosciences and Nanotechnology, University of Mumbai Vidyanagari, Santa Cruz (East) Mumbai India
| | - Murugesan Akksadha
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology Coimbatore TN India +91-9952545640
| | - Somasundaram Indu
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology Coimbatore TN India +91-9952545640
| | | | - Janarthanan Pushpamalar
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan Bandar Sunway 47500 Subang Jaya Selangor Darul Ehsan Malaysia
- Monash-Industry Palm Oil Education and Research Platform (MIPO), Monash University Malaysia Jalan Lagoon Selatan, Bandar Sunway 47500 Selangor Darul Ehsan Malaysia
| | - Loganathan Karthik
- Department of Biotechnology, Sri Shakthi Institute of Engineering and Technology Coimbatore TN India +91-9952545640
- Salem Microbes Private Limited Salem Tamilnadu India
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25
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Emissive carbon dots derived from natural liquid fuels and its biological sensing for copper ions. Talanta 2020; 208:120375. [DOI: 10.1016/j.talanta.2019.120375] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 01/17/2023]
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Abstract
Carbon dots (C-Dots), defined by characteristic sizes of <10 nm, have become a rising star in carbon nanomaterials. C-Dots possess many unique physiochemical and photochemical properties which make them a promising platform for imaging, environmental, catalytic, biological and energy-related applications. To date, C-Dots have been investigated extensively, and their related applications have developed rapidly. However, quantitative understanding of the physiochemical properties of C-Dots still remains a difficult challenge because of their complex structures. Here, we will highlight the recent progress in the practical applications of C-Dots, with particular attention to the research in light-emitting devices, bioimaging and biodetection, catalysis, functional materials, and agriculture.
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Affiliation(s)
- Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
| | - Shuit-Tong Lee
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
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Yan F, Sun Z, Zhang H, Sun X, Jiang Y, Bai Z. The fluorescence mechanism of carbon dots, and methods for tuning their emission color: a review. Mikrochim Acta 2019; 186:583. [DOI: 10.1007/s00604-019-3688-y] [Citation(s) in RCA: 172] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/07/2019] [Indexed: 12/13/2022]
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28
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Zhou Y, Zahran EM, Quiroga BA, Perez J, Mintz KJ, Peng Z, Liyanage PY, Pandey RR, Chusuei CC, Leblanc RM. Size-Dependent Photocatalytic Activity of Carbon Dots with Surface-State Determined Photoluminescence. APPLIED CATALYSIS. B, ENVIRONMENTAL 2019; 248:157-166. [PMID: 32831482 PMCID: PMC7434043 DOI: 10.1016/j.apcatb.2019.02.019] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Carbon dots (CDs) were synthesized by a microwave-mediated method and separated by size exclusion chromatography into three different size fractions. There was no correlation of the size with photoluminescence (PL) emission wavelength, which shows that the PL mechanism is not quantum-size dependent. UV/vis absorption and diffuse reflectance spectroscopies showed that the light absorption properties as well as the band gap of the CDs changed with the size of the particle. The combination of FTIR and XPS measurements revealed the composition on the surface of each fraction. The three CDs fractions were separately used in the photocatalytic degradation of organic dyes under simulated sunlight irradiation. The catalytic activity of the as-prepared CDs was found to increase as the size of the particles decreased. Complete degradation of both rhodamine B (RhB) and methylene blue (MB) was achieved in 150 min by the 2-nm CDs. The scavenger studies showed that the holes and superoxide radicals are the main species involved in the photocatalytic degradation of the dye by the 2-nm CDs. These CDs displayed high stability in the degradation of organic dyes for multiple cycles. The 2-nm CDs displayed promising photocatalytic degradation of p-nitrophenol (PNP) . These results demonstrate for the first time the application of bare carbon dots in the degradation of environmental contaminants.
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Affiliation(s)
- Yiqun Zhou
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Elsayed M Zahran
- Department of Chemistry, Ball State University, Muncie, Indiana 47306, USA
| | - Bruno A Quiroga
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Jennifer Perez
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Keenan J Mintz
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Zhili Peng
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Piumi Y Liyanage
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
| | - Raja R Pandey
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, USA
| | - Charles C Chusuei
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, USA
| | - Roger M Leblanc
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, USA
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Zeng L, Li X, Fan S, Li J, Mu J, Qin M, Wang L, Gan G, Tadé M, Liu S. The bioelectrochemical synthesis of high-quality carbon dots with strengthened electricity output and excellent catalytic performance. NANOSCALE 2019; 11:4428-4437. [PMID: 30801606 DOI: 10.1039/c8nr10510c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The emergence of microbial fuel cell (MFC) technology that can effectively recycle renewable energy from organic pollutants has been regarded as a promising and environmentally friendly route that could be widely used in numerous fields. Here, a novel sustainable self-energy conversion system was successfully constructed to renewably synthesize carbon dots (CDs) via in situ coupling with a MFC system. Interestingly, the generation of CDs was found to largely enhance the electricity production performance of the MFC. Low-temperature electron paramagnetic resonance (EPR) spectroscopic measurements and electrochemical characterization analysis results confirmed that the as-prepared CDs exhibited wide-conversion fluorescence properties and exposed carbon-rich active oxygen sites, and demonstrated a suitable band gap as well as excellent electrocatalytic performance. As a result, the prepared CDs possess high photo-bioelectrocatalytic activity for efficient H2 production, reaching 9.58 μmol h-1. Remarkably, CD-derived photocatalytic ink presented excellent contaminant elimination activity at the solid-solid interface. Thus, this work will provide a new platform for catalyst construction via a bio-assisted method towards the next generation of nano-photocatalytic inks for indoor contaminant removal.
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Affiliation(s)
- Libin Zeng
- State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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31
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Pirsaheb M, Asadi A, Sillanpää M, Farhadian N. Application of carbon quantum dots to increase the activity of conventional photocatalysts: A systematic review. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.064] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Zhang Y, Wang L, Ma X, Yang M, Jiang H, Li L, Yuan C, Shi J. Amorphous carbon layer: An effective assistant for realizing near-infrared-activated photocatalysis. J Colloid Interface Sci 2018; 531:47-55. [PMID: 30025327 DOI: 10.1016/j.jcis.2018.07.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/11/2018] [Accepted: 07/11/2018] [Indexed: 10/28/2022]
Abstract
Carbon quantum dots (CQDs) were considered as desirable up-conversion luminescent materials. However, the reason leading to their up-conversion luminescence was not clear. In this paper, CQDs decorated ZnSn(OH)6 was successfully synthesized by facile in situ hydrothermal method. Under NIR light irradiation, ciprofloxacin degradation efficiency of sample was 37.4%. Subsequently, reasons for the up-conversion effect of CQDs were investigated to some extent. An amorphous carbon layer around CQDs was observed in composite (ZnSn(OH)6@CQDs@C) by HR-TEM and elemental mapping images. To study the effect of amorphous carbon layer on up-conversion performance, individual CQDs decorated ZnSn(OH)6 (ZnSn(OH)6@CQDs) was also fabricated by compositely coating. ZnSn(OH)6@CQDs had no up-conversion luminescence under 980 nm laser light excitation and its photocatalytic activity was negligible, implying amorphous carbon layer played a crucial role for realizing of up-conversion luminescence. A comparison of the FTIR spectra of two composites, ZnSn(OH)6@CQDs@C sample revealed greatly enhanced surface oxidation degree, polarity and hydrophilicity. Surface state of ZnSn(OH)6@CQDs@C composite was controlled by adjusting hydrothermal time, and the results confirmed that up-conversion performance had a close relationship with surface states of samples. This work could provide a new insight into understanding the up-conversion effect of CQDs.
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Affiliation(s)
- Yuanyuan Zhang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Lili Wang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Xiumei Ma
- Electron Microscopy Laboratory, School of Physics, Peking University, PR China
| | - Manli Yang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Haiyan Jiang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Lin Li
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Chuancong Yuan
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China
| | - Jinsheng Shi
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, PR China; Qingdao Bona Biomimetic Composite Research Institute Co. Ltd., PR China.
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Nitrogen-doped carbon dots modified dibismuth tetraoxide microrods: A direct Z-scheme photocatalyst with excellent visible-light photocatalytic performance. J Colloid Interface Sci 2018; 531:473-482. [DOI: 10.1016/j.jcis.2018.07.086] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/15/2018] [Accepted: 07/20/2018] [Indexed: 11/19/2022]
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Vostrikova AV, Prikhozhdenko ES, Mayorova OA, Goryacheva IY, Tarakina NV, Sukhorukov GB, Sapelkin AV. Thermal carbonization in nanoscale reactors: controlled formation of carbon nanodots inside porous CaCO 3 microparticles. Sci Rep 2018; 8:9394. [PMID: 29925932 PMCID: PMC6010419 DOI: 10.1038/s41598-018-27488-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 05/14/2018] [Indexed: 11/08/2022] Open
Abstract
Synthesis of carbon nanodots (CNDs) in confined geometry via incorporation of dextran sulphate into pores of CaCO3 microparticles is demonstrated. The preparation process included three steps: co-precipitation of solutions of inorganic salts and carbon source, thermal treatment and CaCO3 matrix removal. We show that geometric constraints can be used to precisely control the amount of source material and to avoid formation of large carbon particles. Analysis of TEM data shows particle size of ~3.7 nm with narrow size distribution. Furthermore, we found that variation in pore morphology has a clear effect on CNDs structure and optical properties. CNDs with graphene oxide like structure were obtained in the nanoporous outer shell layer of CaCO3 microparticles, while less ordered CNDs with the evidence of complex disordered carbons were extracted from the inner microcavity. These results suggest that confined volume synthesis route in CaCO3 nanopores can be used to precisely control the structure and optical properties of CNDs.
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Affiliation(s)
- Anna V Vostrikova
- Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
| | | | - Oksana A Mayorova
- Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
| | | | - Nadezda V Tarakina
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Gleb B Sukhorukov
- Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Andrei V Sapelkin
- Saratov State University, 83 Astrakhanskaya Street, Saratov, 410012, Russia.
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London, E1 4NS, UK.
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Bhatt S, Bhatt M, Kumar A, Vyas G, Gajaria T, Paul P. Green route for synthesis of multifunctional fluorescent carbon dots from Tulsi leaves and its application as Cr(VI) sensors, bio-imaging and patterning agents. Colloids Surf B Biointerfaces 2018; 167:126-133. [PMID: 29635135 DOI: 10.1016/j.colsurfb.2018.04.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 03/29/2018] [Accepted: 04/03/2018] [Indexed: 12/15/2022]
Abstract
We report a one pot green strategy for the synthesis of carbon dots using tulsi leaves and their potential application in sensing of Cr(VI) selectively. The detection mechanism is based on the phenomenon called inner filter effect (IFE) and a good linear static quenching was observed in the range of 1.6 μM to 50 μM with a detection limit of 4.5 ppb. The reversible switching in fluorescence has been tested and a good recovery in fluorescence was observed up to three consecutive cycles upon addition of ascorbic acid as reducing agent. Also the low toxicity, high fluorescence and photostabilty of the CDs make them excellent imaging and patterning agent. The acid and alkali resistant property of these CDs makes it suitable for real sample analysis. The fluorescent CDs were applied for successful detection of Cr(VI) in water with spike-recoveries ranging from 93 to 99%.
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Affiliation(s)
- Shreya Bhatt
- Analytical and Environmental Science Division and Centralized Instrument Facility; Academy of Scientific and Innovative Research (AcSIR)
| | - Madhuri Bhatt
- Analytical and Environmental Science Division and Centralized Instrument Facility; Academy of Scientific and Innovative Research (AcSIR)
| | - Anshu Kumar
- Analytical and Environmental Science Division and Centralized Instrument Facility; Academy of Scientific and Innovative Research (AcSIR)
| | - Gaurav Vyas
- Analytical and Environmental Science Division and Centralized Instrument Facility; Academy of Scientific and Innovative Research (AcSIR)
| | - Tejal Gajaria
- Division of Biotechnology and Phycology, CSIR-Central Salt & Marine Chemicals Research Institute (CSMCRI), Bhavnagar, India; Academy of Scientific and Innovative Research (AcSIR)
| | - Parimal Paul
- Analytical and Environmental Science Division and Centralized Instrument Facility; Academy of Scientific and Innovative Research (AcSIR).
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36
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Luo X, Zhang W, Han Y, Chen X, Zhu L, Tang W, Wang J, Yue T, Li Z. N,S co-doped carbon dots based fluorescent "on-off-on" sensor for determination of ascorbic acid in common fruits. Food Chem 2018; 258:214-221. [PMID: 29655725 DOI: 10.1016/j.foodchem.2018.03.032] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/15/2017] [Accepted: 03/08/2018] [Indexed: 12/11/2022]
Abstract
A switchable sensor based on N and S co-doped carbon dots (N,S-CDs) was developed to determine ascorbic acid (AA) content in common fruits via fluorescence quenching of N,S-CDs by Fe3+ (off) and recovery by AA (on). TEM showed that the particle size was 2.35-7.95 nm with an average diameter of 5.12 nm. XPS and FTIR confirmed the presence of -OH, -COOH and -NH2 on N,S-CDs surface. UV-vis and FTIR revealed that the coordination of -COOH and -NH2 on N,S-CDs surface with Fe3+ accounted for FL quenching, and the release of -NH2 from coordination complexes due to the reduction of Fe3+ by AA led to partly FL recovery. The sensor allowed detecting AA in the linear range of 10-200 μmol/L with a LOD of 4.69 μmol/L. AA contents in common fruits detected by the sensor were in good agreement with the reference method (P > 0.05), indicating a practical fluorescent sensor for AA detection in common fruits.
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Affiliation(s)
- Xueli Luo
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Wengang Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yong Han
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiumei Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Li Zhu
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Wenzhi Tang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi 712100, PR China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi 712100, PR China
| | - Zhonghong Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, PR China; Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi 712100, PR China; National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi 712100, PR China.
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Srivastava I, Misra SK, Tripathi I, Schwartz‐Duval A, Pan D. In Situ Time‐Dependent and Progressive Oxidation of Reduced State Functionalities at the Nanoscale of Carbon Nanoparticles for Polarity‐Driven Multiscale Near‐Infrared Imaging. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201800009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Indrajit Srivastava
- Departments of Bioengineering Materials Science and Engineering and Beckman Institute University of Illinois at Urbana‐Champaign Mills Breast Cancer Institute, and Carle Foundation Hospital Urbana IL 61801 USA
| | - Santosh K. Misra
- Departments of Bioengineering Materials Science and Engineering and Beckman Institute University of Illinois at Urbana‐Champaign Mills Breast Cancer Institute, and Carle Foundation Hospital Urbana IL 61801 USA
| | - Indu Tripathi
- Departments of Bioengineering Materials Science and Engineering and Beckman Institute University of Illinois at Urbana‐Champaign Mills Breast Cancer Institute, and Carle Foundation Hospital Urbana IL 61801 USA
| | - Aaron Schwartz‐Duval
- Departments of Bioengineering Materials Science and Engineering and Beckman Institute University of Illinois at Urbana‐Champaign Mills Breast Cancer Institute, and Carle Foundation Hospital Urbana IL 61801 USA
| | - Dipanjan Pan
- Departments of Bioengineering Materials Science and Engineering and Beckman Institute University of Illinois at Urbana‐Champaign Mills Breast Cancer Institute, and Carle Foundation Hospital Urbana IL 61801 USA
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38
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Zhang Y, Yuan R, He M, Hu G, Jiang J, Xu T, Zhou L, Chen W, Xiang W, Liang X. Multicolour nitrogen-doped carbon dots: tunable photoluminescence and sandwich fluorescent glass-based light-emitting diodes. NANOSCALE 2017; 9:17849-17858. [PMID: 29116274 DOI: 10.1039/c7nr05363k] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The first use of the combination of ammonium citrate (AC) and ethylenediamine tetraacetic acid (EDTA) as coordinating precursors for the synthesis of highly fluorescent (quantum yield = 67%) multicolour nitrogen-doped carbon dots (CDs) is reported. Under UV light, these CDs emitted outstanding luminescence in colours from dark blue to red. Interestingly, a single component white-light CD point with high fluorescence efficiency was obtained by surface control. Alterations of the photoluminescence (PL) emission of these full-colour CDs were tentatively proposed to benefit from surface functional groups, such as C[double bond, length as m-dash]O and C[double bond, length as m-dash]N. An energy-level model was proposed to explain the continuously adjustable full-colour emission. The white light may be attributed to the overlap of diverse light emission induced by electron transitions between the energy levels. Subsequently, to avoid aggregation-induced solid-state fluorescence quenching, multicolour CD-based sandwich glasses with various colour emission was fabricated, which is anticipated to be compatible with the all-optical light-emitting diodes (LEDs). The facile preparation and outstanding optical features are believed to provide an alternative synthesis route and inspire more research into applications and CD-based materials of multicolour CDs.
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Affiliation(s)
- Yijun Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
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39
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Ding H, Wei JS, Zhong N, Gao QY, Xiong HM. Highly Efficient Red-Emitting Carbon Dots with Gram-Scale Yield for Bioimaging. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12635-12642. [PMID: 29039949 DOI: 10.1021/acs.langmuir.7b02385] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Carbon dots (CDs) are a new class of photoluminescent (PL), biocompatible, environment-friendly, and low-cost carbon nanomaterials. Synthesis of highly efficient red-emitting carbon dots (R-CDs) on a gram scale is a great challenge at present, which heavily restricts the wide applications of CDs in the bioimaging field. Herein, R-CDs with a high quantum yield (QY) of 53% are produced on a gram scale by heating a formamide solution of citric acid and ethylenediamine. The as-prepared R-CDs have an average size of 4.1 nm and a nitrogen content of about 30%, with an excitation-independent emission at 627 nm. After detailed characterizations, such strong red fluorescence is ascribed to the contribution from the nitrogen- and oxygen-related surface states and the nitrogen-derived structures in the R-CD cores. Our R-CDs show good photostability and low cytotoxicity, and thus they are excellent red fluorescence probes for bioimaging both in vitro and in vivo.
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Affiliation(s)
- Hui Ding
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Ji-Shi Wei
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University , Shanghai 200433, P. R. China
| | - Ning Zhong
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Qing-Yu Gao
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221008, Jiangsu, P. R. China
| | - Huan-Ming Xiong
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University , Shanghai 200433, P. R. China
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40
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Li L, Zhang R, Lu C, Sun J, Wang L, Qu B, Li T, Liu Y, Li S. In situ synthesis of NIR-light emitting carbon dots derived from spinach for bio-imaging applications. J Mater Chem B 2017; 5:7328-7334. [PMID: 32264182 DOI: 10.1039/c7tb00634a] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Near infrared (NIR)-light emitting fluorescent probes have attracted extensive research attention in the bioimaging field due to their deep tissue penetration, minimal auto-fluorescence and lower emission light damage to bio-tissues. Herein, we designed and prepared NIR-light emitting CDs (R-CDs) from spinach by a one-step solvothermal method. The R-CDs exhibited good water solubility, a maximum fluorescence emission peak at 680 nm, a high quantum yield of 15.34%, remarkable photo-stability and resistance to metal ions in a body-simulating environment, excellent compatibility, negligible toxicity, and superior labelling capability in vitro and in vivo. These findings significantly highlight the design of NIR-light emitting CDs and exploit their bio-imaging applications.
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Affiliation(s)
- Liping Li
- National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China.
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Zhang Y, Feng J, He M, Jiang J, Xu T, Zhou L, Chen W, Xiang W, Liang X. Efficient and stable white fluorescent carbon dots and CD-based glass thin-films via screen-printing technology for use in W-LEDs. RSC Adv 2017. [DOI: 10.1039/c7ra09924j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
White fluorescent carbon dots (WCDs) were synthesized by combining red carbon dots (RCDs) with ethanol or N-(β-aminoethyl)-γ-aminopropyl methldimethoxy silane (AEAPMS) for the first time.
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Affiliation(s)
- Yijun Zhang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Jiali Feng
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Meiling He
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Jutao Jiang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Tao Xu
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Lei Zhou
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Wei Chen
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Weidong Xiang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Xiaojuan Liang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
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Sharma V, Tiwari P, Mobin SM. Sustainable carbon-dots: recent advances in green carbon dots for sensing and bioimaging. J Mater Chem B 2017; 5:8904-8924. [DOI: 10.1039/c7tb02484c] [Citation(s) in RCA: 274] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review article highlights recent progress in use of green precursors for synthesis of carbon-dots and their applications in fluorescence-based sensing and bioimaging.
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Affiliation(s)
- Vinay Sharma
- Center for Biosciences and Bio-Medical Engineering
- Simrol
- Indore 453552
- India
| | - Pranav Tiwari
- Discipline of Metallurgy Engineering and Materials Science
- Simrol
- Indore 453552
- India
| | - Shaikh M. Mobin
- Center for Biosciences and Bio-Medical Engineering
- Simrol
- Indore 453552
- India
- Discipline of Metallurgy Engineering and Materials Science
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43
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Yu H, Shi R, Zhao Y, Waterhouse GIN, Wu LZ, Tung CH, Zhang T. Smart Utilization of Carbon Dots in Semiconductor Photocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:9454-9477. [PMID: 27623955 DOI: 10.1002/adma.201602581] [Citation(s) in RCA: 307] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/24/2016] [Indexed: 05/17/2023]
Abstract
Efficient capture of solar energy will be critical to meeting the energy needs of the future. Semiconductor photocatalysis is expected to make an important contribution in this regard, delivering both energy carriers (especially H2 ) and valuable chemical feedstocks under direct sunlight. Over the past few years, carbon dots (CDs) have emerged as a promising new class of metal-free photocatalyst, displaying semiconductor-like photoelectric properties and showing excellent performance in a wide variety of photoelectrochemical and photocatalytic applications owing to their ease of synthesis, unique structure, adjustable composition, ease of surface functionalization, outstanding electron-transfer efficiency and tunable light-harvesting range (from deep UV to the near-infrared). Here, recent advances in the rational design of CDs-based photocatalysts are highlighted and their applications in photocatalytic environmental remediation, water splitting into hydrogen, CO2 reduction, and organic synthesis are discussed.
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Affiliation(s)
- Huijun Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | | | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Ding H, Yu SB, Wei JS, Xiong HM. Full-Color Light-Emitting Carbon Dots with a Surface-State-Controlled Luminescence Mechanism. ACS NANO 2016; 10:484-91. [PMID: 26646584 DOI: 10.1021/acsnano.5b05406] [Citation(s) in RCA: 1109] [Impact Index Per Article: 138.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Carbon dots (CDs) with tunable photoluminescence (PL) and a quantum yield of up to 35% in water were hydrothermally synthesized in one pot and separated via silica column chromatography. These separated CDs emitted bright and stable luminescence in gradient colors from blue to red under a single-wavelength UV light. They exhibited high optical uniformity; that is, every sample showed only one peak in the PL excitation spectrum, only one peak in the excitation-independent PL emission spectrum, and similar monoexponential fluorescence lifetimes. Although these samples had similar distributions of particle size and graphite structure in their carbon cores, the surface state gradually varied among the samples, especially the degree of oxidation. Therefore, the observed red shift in their emission peaks from 440 to 625 nm was ascribed to a gradual reduction in their band gaps with the increasing incorporation of oxygen species into their surface structures. These energy bands were found to depend on the surface groups and structures but not on the particle size, not as in traditional semiconductor quantum dots. In addition, because of their excellent PL properties and low cytotoxicity, these CDs could be used to image cells in different colors under a single-wavelength light source, and the red-emitting CDs could be used to image live mice because of the strong penetration capability of their fluorescence.
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Affiliation(s)
- Hui Ding
- Department of Chemistry, Fudan University , Shanghai 200433, P. R. China
| | - Shang-Bo Yu
- Department of Chemistry, Fudan University , Shanghai 200433, P. R. China
| | - Ji-Shi Wei
- Department of Chemistry, Fudan University , Shanghai 200433, P. R. China
| | - Huan-Ming Xiong
- Department of Chemistry, Fudan University , Shanghai 200433, P. R. China
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Reckmeier CJ, Schneider J, Susha AS, Rogach AL. Luminescent colloidal carbon dots: optical properties and effects of doping [Invited]. OPTICS EXPRESS 2016; 24:A312-40. [PMID: 26832584 DOI: 10.1364/oe.24.00a312] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We review the effect of doping on the optical properties of luminescent colloidal carbon dots. They are considered as a hybrid material featuring both molecular and semiconductor-like characteristics, where doping plays an important role. Starting from the short overview of synthetic strategies, we consider the evolution of carbon dots from molecular precursors to fluorescent nanoparticles, and the relevant structural properties of carbon dots. Choice of the reactant materials, dopant atoms and reaction parameters provide carbon dots with varying optical properties. High chemical stability, bright luminescence and customizable surface functionalization of carbon dots open their use in a broad range of applications, which are exemplary presented at the end of this review.
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