1
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Zhang JQ, Shen XF, Liu J. A highly selective dual-signal response ratiometric fluorescence sensing strategy for malachite green in fish based on carbon dots/copper nanoclusters nanocomposite. Food Chem 2024; 452:139543. [PMID: 38735107 DOI: 10.1016/j.foodchem.2024.139543] [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: 03/16/2024] [Revised: 04/23/2024] [Accepted: 05/01/2024] [Indexed: 05/14/2024]
Abstract
Malachite green (MG), a widely used antiparasitic agent, poses health risks to human due to its genotoxic and carcinogenic properties. Herein, a stable dual-emission fluoroprobe of carbon dots/copper nanoclusters is prepared for highly selective detection of MG based on the inner filter effect. This probe exhibits characteristic emission bands at 435 and 625 nm when excited at 376 nm. After adding MG, the both emission signals were significantly quenched, and the ratio of fluorescence intensity (F435/F625) was linearly related to the concentration of MG in the range of 0.05-40 μmol L-1 with a limit of detection of 18.2 nmol L-1. Meanwhile, the two signals exhibit linear relationships with the concentration of MG, respectively, and the corresponding detection results were consistent. The fluoroprobe was successfully used for the detection of MG in fish samples with the recoveries ranging from 96.0% to 103.8% and a relative standard deviation of <3.3%.
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Affiliation(s)
- Jun-Qiu Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiao-Fang Shen
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Jun Liu
- Technology Center of Chengdu Customs, Chengdu 610041, China.
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2
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Chhillar M, Kukkar D, Kumar Yadav A, Kim KH. Nitrogen doped carbon dots and gold nanoparticles mediated FRET for the detection of creatinine in human urine samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 321:124752. [PMID: 38945007 DOI: 10.1016/j.saa.2024.124752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/19/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
Serum creatinine (CR) is regarded as one of the most sought out prognostic biomarkers in medical evaluation of chronic kidney disease (CKD). In light of the diagnostic significance of CR, the utility of a fluorescence biosensor for its detection in human urine specimens has been explored based on Förster resonance energy transfer (FRET) across nitrogen-doped carbon dots (N-CDs) and gold nanoparticles (GNPs). A straightforward microwave-assisted synthesis procedure has been adopted to prepare N-CDs (λexcitation = 400 nm, λemission = 540 ± 5 nm) with bright green emissions. On addition of pre-synthesized GNPs, the radiative emanation of the N-CDs is completely suppressed on account of FRET across the N-CDs and the GNPs. About 77 % of their fluorescence intensity is recovered after adding CR to GNPs@N-CDs nanocomposite. The limit of detection for CR sensing is estimated as 0.02 µg•mL-1. This biosensor is selective enough to recognize CR in the existence of potential interfering substances (e.g., ascorbic acid, glucose, glutathione, urea, and electrolytes). Its practical utility for CR detection has been validated further on the basis of satisfactory correlation with the benchmark Jaffe method, as observed in artificial/human urine specimens. Consequently, this manuscript marks a pioneering report on employing CDs and GNPs-based FRET for identifying CR in urine specimens of CKD patients.
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Affiliation(s)
- Monika Chhillar
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India
| | - Deepak Kukkar
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India.
| | - Ashok Kumar Yadav
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, South Korea.
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3
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Kujur AB, Satnami ML, Chawre Y, Miri P, Sinha A, Nagwanshi R, Karbhal I, Ghosh KK, Pervez S, Deb MK. Inner-filter effect of nitrogen-doped carbon quantum dots-MnO 2 nanotubes for smartphone-integrated dual-mode sensing of glutathione and captopril. RSC Adv 2024; 14:20093-20104. [PMID: 38915329 PMCID: PMC11194709 DOI: 10.1039/d4ra03287j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Accepted: 06/15/2024] [Indexed: 06/26/2024] Open
Abstract
Nitrogen-doped carbon quantum dots (N-CQDs) exhibit unique fluorescence properties and are considered one of the best candidates for the development of fluorescence-based sensors for the detection of many analytes. In this work, a smartphone-assisted fluorescent sensor has been developed using N-CQDs and MnO2 nanotubes (MnO2 NTs) for the detection of glutathione (GSH) and captopril (CAP). N-CQDs were facilely synthesized via the solvothermal method, where o-phenylenediamine (o-PD) and urea were used as nitrogen precursors. Likewise, MnO2 NTs were synthesized using the hydrothermal method. Relying on the excellent fluorescence quenching ability of MnO2 NTs, a nanocomposite of N-CQDs and MnO2 NTs is prepared, wherein the fluorescence intensity of N-CQDs was effectively quenched in the presence of MnO2 NTs via the inner-filter effect (IFE). The addition of thiolated compounds (GSH and CAP) helped in the recovery of the fluorescence of N-CQDs by triggering the redox reaction and decomposing the MnO2 NTs. An investigation of fluorescence along with smartphone-based studies by evaluating the gray measurement using Image J software showed a great response towards GSH and CAP providing LODs of 4.70 μM and 5.22 μM (fluorometrically) and 5.76 μM and 2.81 μM (smartphone-based), respectively. The practical applicability of the sensing system has been verified using human blood plasma samples.
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Affiliation(s)
- Ankita B Kujur
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Manmohan L Satnami
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Yogyata Chawre
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Pinki Miri
- Department of Chemistry, Govt. Nagarjuna P. G. College of Science Raipur-492010 Chhattisgarh India
| | - Akash Sinha
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
- Department of Chemistry, Govt. Nagarjuna P. G. College of Science Raipur-492010 Chhattisgarh India
| | - Rekha Nagwanshi
- Department of Chemistry, Govt. Madhav Science P. G. College Ujjain-456010 Madhya Pradesh India
| | - Indrapal Karbhal
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Kallol K Ghosh
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Shamsh Pervez
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
| | - Manas Kanti Deb
- School of Studies in Chemistry, Pt. Ravishankar Shukla University Raipur-492010 Chhattisgarh India
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Han Y, Shi B, Xie E, Huang P, Zhou Y, Xue C, Wen W, Pu H, Zhang M, Wu J. A bio-inspired co-simulation crawling robot enabled by a carbon dot-doped dielectric elastomer. SOFT MATTER 2024; 20:3436-3447. [PMID: 38564251 DOI: 10.1039/d4sm00029c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Flexible actuation materials play a crucial role in biomimetic robots. Seeking methods to enhance actuation and functionality is one of the directions in which actuators strive to meet the high-performance and diverse requirements of environmental conditions. Herein, by utilizing the method of adsorbing N-doped carbon dots (NCDs) onto SiO2 to form clusters of functional particles, a NCDs@SiO2/PDMS elastomer was prepared and its combined optical and electrical co-stimulation properties were effectively harnessed to develop a biomimetic crawling robot resembling Rhagophthalmus (firefly). The introduction of NCDs@SiO2 cluster particles not only effectively improves the mechanical and dielectric properties of the elastomer but also exhibits fluorescence response and actuation response under the co-stimulation of UV and electricity, respectively. Additionally, a hybrid dielectric elastomer actuator (DEA) with a transparent SWCNT mesh electrode exhibits two notable advancements: an 826% increase in out-of-plane displacement under low electric field stimulation compared to the pure matrix and the ability of NCDs to maintain a stable excited state within the polymer for an extended duration under UV-excitation. Simultaneously, the transparent biomimetic crawling robot can stealthily move in specific environments and fluoresce under UV light.
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Affiliation(s)
- Yubing Han
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
| | - Bori Shi
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
| | - En Xie
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
| | - Peng Huang
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
| | - Yaozhong Zhou
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
| | - Chang Xue
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
- Zhejiang Laboratory, Hangzhou 311100, China
| | - Weijia Wen
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Futian, Shenzhen 518031, China
- Thrust of Advanced Materials, The Hong Kong University of Science and Technology (Guang Zhou), Guang Zhou 511455, China
| | - Huayan Pu
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
| | - Mengying Zhang
- Faculty of Materials Science, Shenzhen MSU-BIT University, Shenzhen 518000, China
| | - Jinbo Wu
- Materials Genome Institute, Shanghai University, Shanghai 200444, China.
- Zhejiang Laboratory, Hangzhou 311100, China
- Faculty of Materials Science, Shenzhen MSU-BIT University, Shenzhen 518000, China
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Fu C, Brand HS, Nazmi K, Werner A, van Splunter A, Bikker FJ. Carbon dots combined with phytosphingosine inhibit acid-induced demineralization of hydroxyapatite in vitro. Arch Oral Biol 2024; 160:105911. [PMID: 38335699 DOI: 10.1016/j.archoralbio.2024.105911] [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: 11/08/2023] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024]
Abstract
OBJECTIVES To study the effects of carbon dots (CDs), in combination with phytosphingosine (PHS), against acid-induced demineralization of hydroxyapatite in vitro. METHODS CDs were generated from citric acid and urea by microwave heating. Transmission electron microscope (TEM), FT-IR, and fluorescence intensity were used to characterize the CDs. A hydroxyapatite (HAp) model was used to investigate the protective effects of CDs, PHS, and their combinations with and without a salivary pellicle against acid-induced demineralization in vitro. Ca2+ release as a parameter to evaluate the inhibition of demineralization was measured by capillary electrophoresis. The interactions between CDs, PHS, and HAp discs were investigated using a fluorescence detector. RESULTS Uniform-sized CDs were synthesized, showing typical optical characteristics. CDs exhibited no inhibition of acid-induced demineralization in vitro, in contrast to PHS. Notably, a pre-coating of CDs increased the protective effects of PHS against acid-induced demineralization, which was not disturbed by the presence of a salivary pellicle and Tween 20. Scanning electron microscope (SEM) confirmed the binding and layers formed of both CDs and PHS to the HAp surfaces. Based on fluorescence spectra CDs binding to HAp seemed to be dependent on Ca2+ and PO43- interactions. CONCLUSIONS CDs combined with PHS showed protective effects against acid-induced demineralization of HAp discs in vitro.
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Affiliation(s)
- Cuicui Fu
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands.
| | - Henk S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands
| | - Kamran Nazmi
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands
| | - Arie Werner
- Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands
| | - Annina van Splunter
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands
| | - Floris J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam 1081LA, the Netherlands
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6
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Wang H, Ai L, Song Z, Nie M, Xiao J, Li G, Lu S. Surface Modification Functionalized Carbon Dots. Chemistry 2023; 29:e202302383. [PMID: 37681290 DOI: 10.1002/chem.202302383] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/09/2023]
Abstract
Carbon dots (CDs) smaller than 10 nm constitute a new type of fluorescent carbon-based nanomaterial. They have attracted much attention owing to their unique structures and excellent photoelectric properties. Primitive CDs usually comprise carbon and oxygen and are synthesized in one step from various natural products or synthetic organic compounds, usually via microwave or hydrothermal methods. However, the uniformity of surface functional groups often make CDs lack the diversity of active sites required for specific applications. Therefore, the functionalization of CDs by specific groups is a powerful strategy for improving their photophysical and photochemical properties. This paper reviews surface modification strategies to overcome these shortcomings. Functionalizing CDs using covalent or non-covalent modification can give them unique properties and broaden their applicability.
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Affiliation(s)
- Haolin Wang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Lin Ai
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Ziqi Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Mingjun Nie
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Jiping Xiao
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Guoping Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | - Siyu Lu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
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7
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Liu Y, Zhao M, Zhu Q. Low Cu(II) Concentration Detection Based on Fluorescent Detector Made from Citric Acid and Urea. J Fluoresc 2023; 33:2391-2401. [PMID: 37074357 DOI: 10.1007/s10895-023-03236-w] [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: 03/14/2023] [Accepted: 03/31/2023] [Indexed: 04/20/2023]
Abstract
Carbon quantum dots (CQD) are an advanced fluorescent material, which has attracted more and more attention in theoretical research and practical applications. To obtain stable CQDs with high fluorescence characteristics for detecting trace metal ions in water, nitrogen-doped carbon quantum dots (N-CQDs) based fluorescent sensors were synthesized by the hydrothermal method, using citric acid and urea as source. Transmission electron microscopy (TEM) images showed that the synthesized N-CQDs maintained a narrow particle size distribution bellow 10 nm, and its average size was 3.07 nm. Fourier transform infrared spectroscopy (FT-IR) indicated that abundant hydroxyl and carboxyl functional groups existed on N-CQDs surface, which helped N-CQDs highly disperse in water. In addition, UV-vis spectroscopy and photoluminescence demonstrated that the N-CQDs obtained a 10.27% of quantum yield (QY) with relatively high and stable fluorescence performance. As a fluorescent sensor, the N-CQDs showed a fluorescence "ON-OFF" mechanism during the Cu2+ detection, which was induced from the electrons transition in surface functional groups. The final N-CQDs exhibited a wide linear relationship between fluorescence response and concentration of Cu2+ in range of 0.3-0.7 μM with a detection limit of 0.071 μM. Furthermore, the detection of Cu2+ in the simulating surface water (by adding interfering metal ions in purified water) and the tap water (from municipal water in Beijing) were used to verify N-CQDs practical application.
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Affiliation(s)
- Ying Liu
- School of Light Industry, Beijing Technology and Business University, Beijing, 100048, China
| | - Mengjie Zhao
- School of Light Industry, Beijing Technology and Business University, Beijing, 100048, China
| | - Qiufeng Zhu
- School of Light Industry, Beijing Technology and Business University, Beijing, 100048, China.
- China Food Flavor and Nutrition Health Innovation Center, Beijing, 100048, China.
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing, 100048, China.
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8
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Li M, Shi Q, Song N, Xiao Y, Wang L, Chen Z, James TD. Current trends in the detection and removal of heavy metal ions using functional materials. Chem Soc Rev 2023; 52:5827-5860. [PMID: 37531220 DOI: 10.1039/d2cs00683a] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
The shortage of freshwater resources caused by heavy metal pollution is an acute global issue, which has a great impact on environmental protection and human health. Therefore, the exploitation of new strategies for designing and synthesizing green, efficient, and economical materials for the detection and removal of heavy metal ions is crucial. Among the various methods for the detection and removal of heavy ions, advanced functional systems including nanomaterials, polymers, porous materials, and biomaterials have attracted considerable attention over the past several years due to their capabilities of real-time detection, excellent removal efficiency, anti-interference, quick response, high selectivity, and low limit of detection. In this tutorial review, we review the general design principles underlying the aforementioned functional materials, and in particular highlight the fundamental mechanisms and specific examples of detecting and removing heavy metal ions. Additionally, the methods which enhance water purification quality using these functional materials have been reviewed, also current challenges and opportunities in this exciting field have been highlighted, including the fabrication, subsequent treatment, and potential future applications of such functional materials. We envision that this tutorial review will provide invaluable guidance for the design of functional materials tailored towards the detection and removal of heavy metals, thereby expediting the development of high-performance materials and fostering the development of more efficient approaches to water pollution remediation.
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Affiliation(s)
- Meng Li
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
| | - Quanyu Shi
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
| | - Ningxin Song
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
| | - Yumeng Xiao
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
| | - Lidong Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, P. R. China.
| | - Zhijun Chen
- Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, Material Science and Engineering College, Northeast Forestry University, Hexing Road 26, Harbin 150040, P. R. China.
| | - Tony D James
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
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Wang D, Chen Y, Xia T, Claudino M, Melendez A, Ni X, Dong C, Liu Z, Yang J. Citric Acid-Based Intrinsic Band-Shifting Photoluminescent Materials. RESEARCH (WASHINGTON, D.C.) 2023; 6:0152. [PMID: 37256199 PMCID: PMC10226408 DOI: 10.34133/research.0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/27/2023] [Indexed: 06/01/2023]
Abstract
Citric acid, an important metabolite with abundant reactive groups, has been demonstrated as a promising starting material to synthesize diverse photoluminescent materials including small molecules, polymers, and carbon dots. The unique citrate chemistry enables the development of a series of citric acid-based molecules and nanomaterials with intriguing intrinsic band-shifting behavior, where the emission wavelength shifts as the excitation wavelength increases, ideal for chromatic imaging and many other applications. In this review, we discuss the concept of "intrinsic band-shifting photoluminescent materials", introduce the recent advances in citric acid-based intrinsic band-shifting materials, and discuss their potential applications such as chromatic imaging and multimodal sensing. It is our hope that the insightful and forward-thinking discussion in this review will spur the innovation and applications of the unique band-shifting photoluminescent materials.
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Affiliation(s)
- Dingbowen Wang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Yizhu Chen
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Tunan Xia
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Mariana Claudino
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Allison Melendez
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Xingjie Ni
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Cheng Dong
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Zhiwen Liu
- Department of Electrical Engineering, Materials Research Institute,
The Pennsylvania State University, University Park, PA 16802, USA
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences,
The Pennsylvania State University, University Park, PA 16802, USA
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10
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Tang S, Li G, Zhang H, Bao Y, Wu X, Yan R, Wang Z, Jin Y. Organic disulfide-modified folate carbon dots for tumor-targeted synergistic chemodynamic/photodynamic therapy. Biomater Sci 2023; 11:3128-3143. [PMID: 36919663 DOI: 10.1039/d3bm00124e] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Carbon dots (CDs) have great potential for cancer diagnosis and treatment. Photodynamic therapy and chemodynamic therapy are promising treatments mediated by reactive oxygen species (ROS), which have the advantages of being minimally invasive, having no multi-drug resistance, and having no systemic toxic side effects. However, the tumor microenvironment (TME) and poor targetability often reduce the therapeutic effect. In this work, we have successfully prepared folate-based carbon dots (FCP-CDs) from folic acid (FA), citric acid (CA), and polyethyleneimine (PEI) for tumor-targeting. The surface of FCP-CDs was modified using organic disulfide, 3,3'-dithiodipropionic acid (DTPA), and a photosensitizer (PS) pyropheophorbide-a (PPa) to form a tumor microenvironment-responsive nanoplatform, FCP-CDs@DTPA@PPa (named FCPPD), for synergistic cancer therapy. The results showed that FCPPD effectively preserved the tumor target specificity of folic acid and the photodynamic therapeutic (PDT) activity of PPa, and could provide additional chemodynamic therapeutic (CDT) function by reacting with hydrogen peroxide (H2O2) to generate ˙OH. The introduction of DTPA, which contains disulfide bonds, endows FCPPD with an excellent ability to deplete glutathione (GSH) in tumors via intracellular redox reactions, amplifying intracellular oxidative strain and enhancing ROS-based therapeutic effects. Systematic in vitro and in vivo studies under various conditions have shown that the obtained FCPPD nanoparticles have good biocompatibility and could be a promising therapeutic agent for imaging-guided PDT/CDT combination therapy.
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Affiliation(s)
- Sihan Tang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
| | - Guanghao Li
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
| | - Hui Zhang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Yujun Bao
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
| | - Xiaodan Wu
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
| | - Rui Yan
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
| | - Zhiqiang Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
| | - Yingxue Jin
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry & Chemical Engineering, Harbin Normal University, Harbin, 150025, China. .,Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China
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11
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Synergistic effect enhancing the energy transfer efficiency of carbon dots-based molecular beacon probe for ultrasensitive detection of microRNA. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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12
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Siahcheshm P, Heiden P. High quantum yield carbon quantum dots as selective fluorescent turn-off probes for dual detection of Fe2+/Fe3+ ions. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Rasheed T. Carbon dots as robust class of sustainable and environment friendlier nano/optical sensors for pesticide recognition from wastewater. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Zhong Y, Guo L, Lu Z, Wang D. 3-Aminophenylboronic acid-functionalized molybdenum disulfide quantum dots for fluorescent determination of hypochlorite. Mikrochim Acta 2022; 190:7. [PMID: 36471018 DOI: 10.1007/s00604-022-05598-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/23/2022] [Indexed: 12/12/2022]
Abstract
A simple method is reported for hypochlorite determination based on fluorescence 3-aminophenylboronic acid-functionalized molybdenum disulfide quantum dots (B-MoS2 QDs). B-MoS2 QDs with strong fluorescence at 380 nm have been successfully synthesized by the amidation reaction between APBA and hydrothermal MoS2 QDs. Hypochlorite sensing was proposed utilizing the fluorescent quenching effect of 3,3',5,5'-tetramethylbenzidine dihydrochloride (TMB) on B-MoS2 QDs and the fast redox reaction between hypochlorite and TMB. The fluorescent quenching effect of TMB to B-MoS2 QDs was proved to be caused by static dynamic quenching and inner filter effect. A good linear relationship was obtained in the hypochlorite concentration range from 1 to 20 μM, and the limit of detection (LOD) was 36.8 nM. The proposed fluorescent detection assay was simple and fast, taking only 5 min at room temperature. Satisfactory results were obtained in the standard spike recovery tests on tap water and milk samples, which indicate high potential in constructing fluorescent bio-detection assays.
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Affiliation(s)
- Yaping Zhong
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan, 430200, China.
| | - Lijuan Guo
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan, 430200, China
| | - Zhentan Lu
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan, 430200, China
| | - Dong Wang
- Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan, 430200, China.
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15
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Wang Z, Li L, Zhan S, Wu S. Plasmonic near field assistant highly sensitive detection of hypochlorite by lanthanide co-doped core/shell upconversion probe. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Zhang Z, Tao H, Cao Q, Li L, Xu S, Li Y, Liu Y. Ratiometric fluorescence sensor for sensitive detection of inorganic phosphate in environmental samples. Anal Bioanal Chem 2022; 414:3507-3515. [PMID: 35195742 DOI: 10.1007/s00216-022-03973-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/04/2022] [Accepted: 02/09/2022] [Indexed: 02/03/2023]
Abstract
Fast, simple, and low-cost on-site visualized detection of inorganic phosphate (Pi) is in great demand since phosphate is the major reason of eutrophication. In this work, a ratiometric fluorescent probe composed by green carbon dots (GCDs) and red carbon dots (RCDs) has been established for high-sensitivity and selective sensing of Pi. A trend of color change from red to green is observed for the detection of Pi under ultraviolet light and the detection limit is 0.09 μM in the range of 0 to 55 μM. Fluorescent test paper prepared from the probe solution was successfully applied to semi-quantitative visual detection of Pi in real-world water and soil samples, which shows great real-world application potentials.
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Affiliation(s)
- Zhao Zhang
- School of Resources and Environmental Engineering, Anhui University, Anhui province, Hefei, 230601, China.,Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Huihui Tao
- School of Resources and Environmental Engineering, Anhui University, Anhui province, Hefei, 230601, China.,Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Qiao Cao
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Lingfei Li
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Shihao Xu
- Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Yucheng Li
- School of Resources and Environmental Engineering, Anhui University, Anhui province, Hefei, 230601, China.
| | - Yingying Liu
- Institute of Intelligent Machines, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
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17
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Green-emitting carbon quantum dots as a dual-mode fluorescent and colorimetric sensor for hypochlorite. Anal Bioanal Chem 2022; 414:2651-2660. [PMID: 35165778 DOI: 10.1007/s00216-022-03901-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/07/2022] [Accepted: 01/12/2022] [Indexed: 11/01/2022]
Abstract
In this work, green-emitting carbon quantum dots were successfully prepared through a facile one-step solid-state reaction method. The obtained green-emitting carbon dots (G-CDs) showed good fluorescence stability in NaCl aqueous solution and different pH values. Moreover, the G-CDs showed high sensitivity and selectivity for detecting hypochlorite by both fluorometry and colorimetry. Under the optimized condition, a highly sensitive detection of hypochlorite was established in the range of 0.2-100 μM and 10-150 μM for fluorescent and colorimetric methods, respectively. The corresponding limits of detection (LOD) were 0.0781 μM and 1.82 μM, respectively. Therefore, the G-CDs were successfully applied to determinate hypochlorite in actual water samples. In addition, a paper-based sensor loading with the G-CDs was also developed for rapid visual detection of hypochlorite. The results suggested that the G-CDs could be a promising candidate to detect hypochlorite.
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18
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Zhang X, Liao X, Hou Y, Jia B, Fu L, Jia M, Zhou L, Lu J, Kong W. Recent advances in synthesis and modification of carbon dots for optical sensing of pesticides. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126881. [PMID: 34449329 DOI: 10.1016/j.jhazmat.2021.126881] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/26/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Serious threat from pesticide residues to the ecosystem and human health has become a global concern. Developing reliable methods for monitoring pesticides is a world-wide research hotspot. Carbon dots (CDs) with excellent photostability, low toxicity, and good biocompatibility have been regarded as the potential substitutes in fabricating various optical sensors for pesticide detection. Based on the relevant high-quality publications, this paper first summarizes the current state-of-the-art of the synthetic and modification approaches of CDs. Then, a comprehensive overview is given on the recent advances of CDs-based optical sensors for pesticides over the past five years, with a particular focus on photoluminescent, electrochemiluminescent and colorimetric sensors regarding the sensing mechanisms and design principles by integrating with various recognition elements including antibodies, aptamers, enzymes, molecularly imprinted polymers, and some nanoparticles. Novel functions and extended applications of CDs as signal indicators, catalyst, co-reactants, and electrode surface modifiers, in constructing optical sensors are specially highlighted. Beyond an assessment of the performances of the real-world application of these proposed optical sensors, the existing inadequacies and current challenges, as well as future perspectives for pesticide monitoring are discussed in detail. It is hoped to provide powerful insights for the development of novel CDs-based sensing strategies with their wide application in different fields for pesticide supervision.
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Affiliation(s)
- Xin Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; Pharmacy College, Jinzhou Medical University, Jinzhou 121001, China
| | - Xiaofang Liao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Yujiao Hou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; Xinjiang Agricultural Vocational Technical College, Changji 831100, China
| | - Boyu Jia
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Lizhu Fu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Mingxuan Jia
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China; Pharmacy College, Jinzhou Medical University, Jinzhou 121001, China
| | - Lidong Zhou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Jinghua Lu
- Pharmacy College, Jinzhou Medical University, Jinzhou 121001, China
| | - Weijun Kong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
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19
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Gao Y, Liu Y, Zhang H, Lu W, Jiao Y, Shuang S, Dong C. One-pot synthesis of efficient multifunctional nitrogen-doped carbon dots with efficient yellow fluorescence emission for detection of hypochlorite and thiosulfate. J Mater Chem B 2022; 10:8910-8917. [DOI: 10.1039/d2tb01695h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CD-based ratiometric fluorescence probes are of great significance for visual detection, but accomplishing this goal is still a particularly challenging task.
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Affiliation(s)
- Yifang Gao
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030006, China
| | - Yang Liu
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Huilin Zhang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Wenjing Lu
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Yuan Jiao
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030006, China
| | - Shaomin Shuang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
| | - Chuan Dong
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, China
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20
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Xiao D, Qi H, Teng Y, Pierre D, Kutoka PT, Liu D. Advances and Challenges of Fluorescent Nanomaterials for Synthesis and Biomedical Applications. NANOSCALE RESEARCH LETTERS 2021; 16:167. [PMID: 34837561 PMCID: PMC8626755 DOI: 10.1186/s11671-021-03613-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 09/28/2021] [Indexed: 05/18/2023]
Abstract
With the rapid development of nanotechnology, new types of fluorescent nanomaterials (FNMs) have been springing up in the past two decades. The nanometer scale endows FNMs with unique optical properties which play a critical role in their applications in bioimaging and fluorescence-dependent detections. However, since low selectivity as well as low photoluminescence efficiency of fluorescent nanomaterials hinders their applications in imaging and detection to some extent, scientists are still in search of synthesizing new FNMs with better properties. In this review, a variety of fluorescent nanoparticles are summarized including semiconductor quantum dots, carbon dots, carbon nanoparticles, carbon nanotubes, graphene-based nanomaterials, noble metal nanoparticles, silica nanoparticles, phosphors and organic frameworks. We highlight the recent advances of the latest developments in the synthesis of FNMs and their applications in the biomedical field in recent years. Furthermore, the main theories, methods, and limitations of the synthesis and applications of FNMs have been reviewed and discussed. In addition, challenges in synthesis and biomedical applications are systematically summarized as well. The future directions and perspectives of FNMs in clinical applications are also presented.
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Affiliation(s)
- Deli Xiao
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, China
- Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing, 210009, China
| | - Haixiang Qi
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yan Teng
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Dramou Pierre
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | | | - Dong Liu
- Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resources, School of Biological and Pharmaceutical Engineering, West Anhui University, West of Yunlu Bridge, Moon Island, Lu'an, 237012, Anhui, China.
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21
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Effect of Nitrogen-Doped Carbon Dots (NCDs) on the Characteristics of NCD/MIL-53(Fe) Composite and Its Photocatalytic Performance for Methylene Blue Degradation under Visible Light. ADSORPT SCI TECHNOL 2021. [DOI: 10.1155/2021/5906248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Metal-organic framework composites, which are combined from metal-organic framework and advanced carbon material, have drawn great attention in many fields of application such as environmental remediation and catalysts. Within this paper, the carbon/MIL-53(Fe) composite was fabricated via an in situ synthesis, in which N-containing carbon dots (NCDs) were mixed with MOF precursors’ solutions under various ratios before going through the solvothermal stage. It was showed that the introduction of a certain amount of NCDs would affect characteristic features and improve the photocatalytic performance of final products. The optimal doping content of NCDs in NCD/MIL-53(Fe) composite was determined. SEM images showed that the M-140 appeared as hexagonal bipyramid-shaped crystals with an average size of 700 nm. Compared with pristine MIL-53(Fe), the M-140 was more visibly light-responsive, and its calculated band gap energy was approximately 2.3 eV. In addition, M-140 catalyst also displayed more excellent photocatalytic activity for Methylene Blue degradation in a pH range from 5 to 7. Under optimal conditions, MB was achieved within 60 minutes and the removal rate was nearly 100% after 5 cycles. The photocatalytic mechanism of the obtained NCD/MIL-53(Fe) composite was discussed.
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22
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Microwave-assisted solid-phase synthesis of nitrogen-doping carbon dot with good solvent compatibility and its sensing of sunitinib. Anal Bioanal Chem 2021; 413:6435-6447. [PMID: 34401928 DOI: 10.1007/s00216-021-03609-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/19/2021] [Accepted: 08/06/2021] [Indexed: 10/20/2022]
Abstract
Microwave-assisted solid-phase synthesis method was simple, convenient, and fast, and herein adopted to produce nitrogen-doping carbon dots (N-CDs) in only 3 min. The N-CDs possessed high fluorescence quantum yield up to 15.9% with satisfactory stability to the environmental pH, ionic strength, and ultraviolet radiation. Particularly, the N-CDs had excellent dispersibility in both water and water-compatible organic solvents with similar fluorescence properties. Sunitinib, a small-molecule tyrosine inhibitor effective for some solid tumors, was found to quench the fluorescence of N-CDs in these media via the inner-filter effect. Hence, it was convenient to combine the proper sample pretreatment with the N-CD probe for sensing sunitinib avoiding the medium incompatibility problem. For rat plasma sample, salting-out liquid-liquid extraction was employed to minimize the sample matrix and concentrate the target sunitinib from aqueous to acetonitrile. The fluorescence detection of sunitinib was then achieved in acetonitrile by the addition of the proper amount of N-CDs. The method provided a good linearity of 0.1 μg/mL to 7 μg/mL with a limit of detection of 30 ng/mL, which met the requirement of the therapeutic drug monitoring of sunitinib. The developed method was potential for on-site detection of sunitinib.
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23
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Vercelli B, Donnini R, Ghezzi F, Sansonetti A, Giovanella U, La Ferla B. Nitrogen-doped carbon quantum dots obtained hydrothermally from citric acid and urea: The role of the specific nitrogen centers in their electrochemical and optical responses. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138557] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Shan F, Xia H, Xie X, Fu L, Yang H, Zhou Q, Zhang Y, Wang Z, Yu X. Novel N-doped carbon dots prepared via citric acid and benzoylurea by green synthesis for high selectivity Fe(III) sensing and imaging in living cells. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106273] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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25
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An Active Surface Preservation Strategy for the Rational Development of Carbon Dots as pH-Responsive Fluorescent Nanosensors. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Here we report the rational development of a carbon dot (CDs)-based fluorescent pH nanosensor by employing an active surface preservation strategy. More specifically, citric acid, urea and fluorescein were subjected to a one-pot hydrothermal treatment, which preserved fluorescein-like structures on the surface of the CDs. The obtained CDs showed pH-sensitive green emission, which can be used to determine pH variations from 3.7 to 12.1 by fluorescence enhancement. Moreover, the obtained nanoparticles showed excellent selectivity toward pH, fluorescence reversibility in different pH values, photostability, while being compatible with human cell lines (even at high concentrations). Furthermore, their performance as pH sensors was comparable with reference pH determination procedures. Thus, an active surface preservation strategy was successfully employed to develop fluorescence pH nanosensors in a rational manner and without post-synthesis functionalization strategies, which show potential for future use in pH determination.
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26
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Zhang W, Sigdel G, Mintz KJ, Seven ES, Zhou Y, Wang C, Leblanc RM. Carbon Dots: A Future Blood-Brain Barrier Penetrating Nanomedicine and Drug Nanocarrier. Int J Nanomedicine 2021; 16:5003-5016. [PMID: 34326638 PMCID: PMC8316758 DOI: 10.2147/ijn.s318732] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/01/2021] [Indexed: 01/06/2023] Open
Abstract
Drug delivery across the blood-brain barrier (BBB) is one of the biggest challenges in modern medicine due to the BBB's highly semipermeable property that limits most therapeutic agents of brain diseases to enter the central nervous system (CNS). In recent years, nanoparticles, especially carbon dots (CDs), exhibit many unprecedented applications for drug delivery. Several types of CDs and CD-ligand conjugates have been reported successfully penetrating the BBB, which shows a promising progress in the application of CD-based drug delivery system (DDS) for the treatment of CNS diseases. In this review, our discussion of CDs includes their classification, preparations, structures, properties, and applications for the treatment of neurodegenerative diseases, especially Alzheimer's disease (AD) and brain tumor. Moreover, abundant functional groups on the surface, especially amine and carboxyl groups, allow CDs to conjugate with diverse drugs as versatile drug nanocarriers. In addition, structure of the BBB is briefly described, and mechanisms for transporting various molecules across the BBB and other biological barriers are elucidated. Most importantly, recent developments in drug delivery with CDs as BBB-penetrating nanodrugs and drug nanocarriers to target CNS diseases especially Alzheimer's disease and brain tumor are summarized. Eventually, future prospects of the CD-based DDS are discussed in combination with the development of artificial intelligence and nanorobots.
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Affiliation(s)
- Wei Zhang
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
| | - Ganesh Sigdel
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
| | - Keenan J Mintz
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
| | - Elif S Seven
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
| | - Yiqun Zhou
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
| | - Chunyu Wang
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Roger M Leblanc
- Department of Chemistry, University of Miami, Coral Gables, FL, 33146, USA
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27
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Li Y, He Y, Ge Y, Song G, Zhou J. Smartphone-assisted visual ratio-fluorescence detection of hypochlorite based on copper nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 255:119740. [PMID: 33799190 DOI: 10.1016/j.saa.2021.119740] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
A sensitive naked eye and ratio-fluorescence sensor for Curcumin (CCM) and hypochlorite (ClO-) determination based on copper nanoclusters (Cu NCs) was developed. The fluorescence of the Cu NCs can be quenched due to inner filter effect (IFE) between CCM and Cu NCs, and the ratio fluorescence probe was formed. After adding ClO- to Cu NCs-CCM system, the phenolic and methoxy groups of CCM were oxidized to quinones, then the fluorescence of CCM was quenched and the fluorescence of Cu NC was restored. Moreover, the continuous detection of CCM and ClO- is accompanied by the change of solution color. Therefore, CCM and ClO- semiquantitative visual and fluorescence dual channel detection were realized. The detection results show that the detection based on Cu NCs-CCM probe has a wide detection range (0-412 µM) and low detection limit (24 µM), and a good recovery rate is obtained in adulterated milk and tap water detection. Furthermore, smartphone was introduced for image digital colorimetric analysis through the acquisition, recognition and RGB data processing of solution colors, providing an effective scheme for the field rapid detection of hypochlorite.
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Affiliation(s)
- Yanyue Li
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Yu He
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.
| | - Yili Ge
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Gongwu Song
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Jiangang Zhou
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
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28
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Uriarte D, Vidal E, Canals A, Domini CE, Garrido M. Simple-to-use and portable device for free chlorine determination based on microwave-assisted synthesized carbon dots and smartphone images. Talanta 2021; 229:122298. [PMID: 33838783 DOI: 10.1016/j.talanta.2021.122298] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 12/26/2022]
Abstract
A new portable and simple 3D printed device was designed for free chlorine determination in water samples. The analytical method was based on the quenching caused by free chlorine on the fluorescence emission of the carbon dots (CD) synthesized from citric acid and urea. The fluorescence was captured through the camera of a smartphone, which was coupled to the 3D printed device, and the images were processed using the RGB system by the ImageJ 1.51q software. The proposed method was selective and precise (RSD% 4.6, for n = 6), and the trueness of the results was evaluated by comparing the results obtained with those recovered by the spectrophotometric method 4500-Cl G (standard method), with good agreement between them. Moreover, the remarkable correlation between the CD signal and the free chlorine concentration resulted in a determination with low detection limits (limit of detection of 6 μg L-1 and limit of quantification of 20 μg L-1). Therefore, the new method and the related portable device could be considered a fast, economical and reliable alternative for the on-site determination of free chlorine in water samples.
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Affiliation(s)
- D Uriarte
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - E Vidal
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - A Canals
- Departamento de Química Analítica, Nutrición y Bromatología, Instituto Universitario de Materiales, Universidad de Alicante, Apdo. 99, 03080, Alicante, Spain
| | - C E Domini
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
| | - M Garrido
- INQUISUR, Departamento de Química, Universidad Nacional Del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
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29
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Liu G, Gao H, Chen J, Shao C, Chen F. An Ultra‐sensitive Electrochemiluminescent Detection of Carcinoembryonic Antigen Using a Hollowed‐out Electrode. ELECTROANAL 2021. [DOI: 10.1002/elan.202060624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Gen Liu
- College of Chemistry and Material Science Huaibei Normal University Huaibei 235000 China
- State Key Laboratory of Analytical Chemistry for Life Science Nanjing University Nanjing 210023 China
- Henan Key Laboratory of Biomolecular Recognition and Sensing Shangqiu Normal University Shangqiu 476000 China
| | - Hui Gao
- College of Chemistry and Material Science Huaibei Normal University Huaibei 235000 China
| | - Jiajia Chen
- College of Chemistry and Material Science Huaibei Normal University Huaibei 235000 China
| | - Congying Shao
- College of Chemistry and Material Science Huaibei Normal University Huaibei 235000 China
| | - Feifei Chen
- College of Chemistry and Material Science Huaibei Normal University Huaibei 235000 China
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30
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Stachowska JD, Murphy A, Mellor C, Fernandes D, Gibbons EN, Krysmann MJ, Kelarakis A, Burgaz E, Moore J, Yeates SG. A rich gallery of carbon dots based photoluminescent suspensions and powders derived by citric acid/urea. Sci Rep 2021; 11:10554. [PMID: 34006934 PMCID: PMC8131706 DOI: 10.1038/s41598-021-89984-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/08/2021] [Indexed: 01/17/2023] Open
Abstract
In this study we demonstrate simple guidelines to generate a diverse range of fluorescent materials in both liquid and solid state by focusing on the most popular C-dots precursors, i.e. the binary systems of citric acid and urea. The pyrolytic treatment of those precursors combined with standard size separation techniques (dialysis and filtration), leads to four distinct families of photoluminescent materials in which the emissive signal predominantly arises from C-dots with embedded fluorophores, cyanuric acid-rich C-dots, a blend of molecular fluorophores and a mixture of C-dots with unbound molecular fluorophores, respectively. Within each one of those families the chemical composition and the optical properties of their members can be fine-tuned by adjusting the molar ratio of the reactants. Apart from generating a variety of aqueous dispersions, our approach leads to highly fluorescent powders derived from precursors comprising excessive amounts of urea that is consumed for the build-up of the carbogenic cores, the molecular fluorophores and the solid diluent matrix that suppresses self-quenching effects.
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Affiliation(s)
- Joanna D Stachowska
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, PR12HE, UK
| | - Andrew Murphy
- UCLan Research Centre for Smart Materials, School of Natural Sciences, Preston, PR12HE, UK
| | - Claire Mellor
- School of Psychology, University of Central Lancashire, Preston, PR12HE, UK
| | - Diogo Fernandes
- Malvern Panalytical, Enigma Business Park, Grovewood Road, Malvern, WR14 1XZ, UK
| | - Ella N Gibbons
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, PR12HE, UK
| | - Marta J Krysmann
- UCLan Research Centre for Smart Materials, School of Natural Sciences, Preston, PR12HE, UK
| | - Antonios Kelarakis
- UCLan Research Centre for Smart Materials, School of Natural Sciences, Preston, PR12HE, UK.
| | - Engin Burgaz
- Faculty of Engineering, Department of Metallurgical and Materials Engineering, Ondokuz Mayis University, 55139, Atakum, Samsun, Turkey
| | - Joshua Moore
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | - Stephen G Yeates
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
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31
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Meng Y, Jiao Y, Zhang Y, Lu W, Wang X, Shuang S, Dong C. Facile synthesis of orange fluorescence multifunctional carbon dots for label-free detection of vitamin B 12 and endogenous/exogenous peroxynitrite. JOURNAL OF HAZARDOUS MATERIALS 2021; 408:124422. [PMID: 33183837 DOI: 10.1016/j.jhazmat.2020.124422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/15/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
In this work, orange emission fluorescent multifunctional carbon dots (O-CDs) were designed for the label-free detection of vitamin B12 (VB12),endogenous/exogenous peroxynitrite (ONOO-) sensing, cell imaging, and fluorescent flexible film preparation. The O-CDs with excitation-independent were prepared using safranine T and ethanol as precursors via one-step hydrothermal process. VB12 was utilized as a quencher to quench the fluorescence of O-CDs due to the internal filtration effect (IFE). Two-segment linear ranges are 1-65 μM and 70-140 μM, and the detection limit was calculated as 0.62 μM. Besides, ONOO- can reduce the fluorescence intensity of O-CDs based on static quenching (SQ). The linear ranges are 0.3-9 μM and 9-48 μM, and the detection limit was 0.06 μM. Moreover, the O-CDs were exploited as a cellular imaging reagent for intracellular VB12 and endogenous/exogenous ONOO- imaging owing to its great biocompatibility, low toxicity and strong photostability. These results indicate that O-CDs have the potential to be used as a sensitive fluorescence probe to rapidly monitor VB12 and endogenous/exogenous ONOO- with high selectivity in living cells. Also, the as-proposed O-CDs can be employed to fabricate O-CDs/PVA composites as fluorescent flexible films. All of the above prove that the O-CDs present great prospect in multiple applications such as biosensing, cellular labeling, biomedical optical imaging, and fluorescent films.
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Affiliation(s)
- Yating Meng
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yuan Jiao
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Yuan Zhang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Wenjing Lu
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiaodong Wang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Shaomin Shuang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Chuan Dong
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
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32
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Nie Y, Wang S, Lin Y, Lai W, Weng W, Tang D. Highly sensitive fluorescent probe for selective detection of hypochlorite ions using nitrogen-fluorine co-doped carbon nanodots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119231. [PMID: 33277209 DOI: 10.1016/j.saa.2020.119231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/02/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
Hypochlorite ions (ClO-) are widely used in bleaching agents and disinfectants. However, high concentrations of chloride species are harmful to human health. Therefore, effective methods for the detection of ClO- ions are required. In this study, using 4-fluorophthalic acid and glycine, nitrogen-fluorine co-doped carbon nanodots (N,F-CDs) were synthesized by one-pot hydrothermal synthesis for use as a fluorescent probe for the fluorometric detection of ClO- in aqueous media, based on the inhibition of n → π* transitions. The excitation and emission peak centers of the N,F-CDs are at 387 and 545 nm, respectively. The N,F-CDs show a fast quenching response (<1 min) for ClO- and can be used in a wide pH range (pH 4-13). Under optimal conditions, the fluorescence intensity decreased with increase in the ClO- concentration from 0 to 35 μM, and a low limit of detection (9.6 nM) was achieved. This probe possesses excellent selectivity and high sensitivity and was used to analyze standardized samples of piped water, achieving a satisfactory recovery. Thus, this nitrogen-fluorine co-doped nanodot probe is promising for the detection of pollutants.
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Affiliation(s)
- Yujing Nie
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, People's Republic of China.
| | - Shuhan Wang
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, People's Republic of China
| | - Youxiu Lin
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, People's Republic of China
| | - Wenqiang Lai
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, People's Republic of China
| | - Wen Weng
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, People's Republic of China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (Ministry of Education & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
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33
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Meng Y, Zhang H, Li M, Lu W, Liu Y, Gong X, Shuang S, Dong C. A facile synthesis of long-wavelength emission nitrogen-doped carbon dots for intracellular pH variation and hypochlorite sensing. Biomater Sci 2021; 9:2255-2261. [PMID: 33533378 DOI: 10.1039/d0bm02047h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Intracellular pH and hypochlorite (ClO-) concentration play an important role in life activities, so there is an urgent need to develop a valid strategy to monitor pH and ClO- in biological systems with high sensitivity and specificity. In this study, we report long-wavelength emission nitrogen-doped carbon dots (N-CDs) and their potential applications in intracellular pH variation, ClO- sensing and cell imaging. The N-CDs were prepared via a facile one-pot hydrothermal method of neutral red (NR) and glutamine (Gln). N-CDs exhibited a pH-sensitive response in the range of 4.0-9.0 and a good linear relationship in the range of 5.6-7.4, which indicated that N-CDs are an ideal agent for monitoring pH fluctuations in living cells. In addition, ClO- was capable of reducing the photoluminescence of N-CDs based on static quenching. The linear range is 1.5-112.5 μM and 112.5-187.5 μM, and the LOD is 0.27 μM. Besides, the as-fabricated N-CDs have been smoothly achieved to monitor pH and ClO- in PC-12 living cells due to their great biocompatibility and lower cytotoxicity, demonstrating their promising applications in the biomedical field. Compared with other CD-based methods, the as-proposed N-CDs have a longer fluorescence emission, which makes them potentially valuable in biological systems. The results pave a way towards the construction of long-wavelength carbon-based nanomaterials for fluorescence sensing and cell imaging.
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Affiliation(s)
- Yating Meng
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering, Shanxi University, No. 92 Wucheng rd., Taiyuan 030006, China
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34
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Zhang X, Qu J, Ding SN. Photoluminescent sea urchin-shaped carbon-nanobranched polymers as nanoprobes for the selective and sensitive assay of hypochlorite. RSC Adv 2021; 11:8134-8141. [PMID: 35423326 PMCID: PMC8695118 DOI: 10.1039/d0ra07608b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 02/03/2021] [Indexed: 01/14/2023] Open
Abstract
This work reports donor-acceptor type sea urchin-like carbon nanobranched polymers (SUCNPs). As a novel carbon-based nanomaterial, SUCNPs were effectively synthesized for the first time through a facile and economical solvothermal approach employing uric acid and l-cysteine as nitrogen/sulfur sources. The nitrogen-rich structure of the heterocylic aromatic polymer led to a blue fluorescence at the excitation/emission maxima of 350/436 nm with robust photostability. SUNCPs showed highly selective ability towards hypochlorite (ClO-) against other relevant interfering substances. Upon exposure to a growing concentration of ClO-, SUCNPs fluorescence presented a gradual rise with a remarkable blue shift by virtue of the inhibition of photoinduced charge transfer (PCT) process. A linear relationship was established between the fluorescence intensity ratio (I 401 nm/I 436 nm) and the ClO- concentration in the range of 0.1-200 μM. The detection limit was as low as 30 nM (3σ/k). The "turn-on" type nanoprobe was further used in real samples and paper-based analytical chips efficiently, implying its application in a sophisticated and convenient platform.
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Affiliation(s)
- Xin Zhang
- School of Materials Science and Engineering, Yancheng Institute of Technology Yancheng 224051 China
- School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Jian Qu
- School of Materials Science and Engineering, Yancheng Institute of Technology Yancheng 224051 China
| | - Shou-Nian Ding
- School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
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35
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Simões EF, Almeida AS, Duarte AC, Duarte RM. Assessing reactive oxygen and nitrogen species in atmospheric and aquatic environments: Analytical challenges and opportunities. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Lai JY, Inoue N, Oo CW, Kawasaki H, Lim TS. One-step synthesis of M13 phage-based nanoparticles and their fluorescence properties. RSC Adv 2021; 11:1367-1375. [PMID: 35424103 PMCID: PMC8693608 DOI: 10.1039/d0ra02835e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 12/15/2020] [Indexed: 11/21/2022] Open
Abstract
Fluorescent carbon nanoparticles have been gaining more attention in recent years for their excellent fluorescence properties and simple synthesis routes. Different carbon sources have been reported for fluorescent carbon nanoparticle synthesis but the use of virus particles as a carbon source is scarce. Herein, we report the utilization of M13 bacteriophage particles as the carbon source to synthesize phage-based nanoparticles through facile, one-step microwave heating. M13 bacteriophage is a nanosized filamentous virus particle with a single-stranded DNA genome encapsulated by a large number of coat proteins. These amino acid rich building blocks provide a substantial amount of carbon source for the synthesis of fluorescent nanoparticles. The resulting nanoparticles from M13 bacteriophage showed good water solubility and exhibited bright blue luminescence. The selectivity and sensitivity of the phage-based nanoparticles towards Fe(iii) ions showed a quenching effect with a linear correlation and a detection limit of 8.0 μM. This process highlights the potential application of virus particles as a source for the synthesis of fluorescent carbon nanoparticles and the sensing application.
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Affiliation(s)
- Jing Yi Lai
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia 11800 Penang Malaysia +60-4-653-4803 +60-4-653-4852
| | - Naoya Inoue
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University 3-3-35 Yamate-cho Suita-shi Osaka 564-8680 Japan +60-6-6368-0979
| | - Chuan Wei Oo
- School of Chemical Sciences, Universiti Sains Malaysia 11800 Minden Penang Malaysia
| | - Hideya Kawasaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University 3-3-35 Yamate-cho Suita-shi Osaka 564-8680 Japan +60-6-6368-0979
| | - Theam Soon Lim
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia 11800 Penang Malaysia +60-4-653-4803 +60-4-653-4852
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia 11800 Penang Malaysia
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37
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Seedad R, khuthinakhun S, Ratanawimarnwong N, Jittangprasert P, Mantim T, Songsrirote K. Carbon dots prepared from citric acid and urea by microwave-assisted irradiation as a turn-on fluorescent probe for allantoin determination. NEW J CHEM 2021. [DOI: 10.1039/d1nj03284d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon dots from citric acid and urea as a fluorescent probe for sensitive and selective detection of allantoin.
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Affiliation(s)
- Ratchadaporn Seedad
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Sasimaporn khuthinakhun
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Nuanlaor Ratanawimarnwong
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Piyada Jittangprasert
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Thitirat Mantim
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Kriangsak Songsrirote
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
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38
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Vale N, Silva S, Duarte D, Crista DMA, Pinto da Silva L, Esteves da Silva JCG. Normal breast epithelial MCF-10A cells to evaluate the safety of carbon dots. RSC Med Chem 2020; 12:245-253. [PMID: 34046613 DOI: 10.1039/d0md00317d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/17/2020] [Indexed: 11/21/2022] Open
Abstract
The human normal breast cell line MCF-10A is being widely used as a model in toxicity studies due to its structural similarity to the normal human mammary epithelium. Over the years, application of carbon dots (C-dots) in biomedicine has been increasing due to their photoluminescence properties, biocompatibility, biosafety and possible applications in bioimaging and as drug carriers. In this work we prepared three different C-dots from the same set of carbon and nitrogen precursors (citric acid and urea, respectively) via three distinct bottom-up synthetic routes and their safety was tested against the normal breast cell line MCF-10A. The characterization results demonstrated a similar size range and composition for all the C-dots. The MCF-10A cells were treated with different concentrations of C-dots for 24, 48 and 72 h to evaluate the cell viability over time. For the 24 h incubation, there were no significant decreases in the viability of the MCF-10A cells. For the 48 h treatment, there was a significant decrease in the viability of the cells treated with calcination-based C-dots, but without significant cellular viability changes for microwave and hydrothermal-based C-dots. For 72 h, cells treated with hydrothermal-based C-dots have the most promising viability profile. Also, compared with paclitaxel, these C-dots have a safety profile very close to that of an antineoplastic in non-tumor cells. Our results suggest that these new C-dots have potential as imaging candidates or biosensing tools as well as drug carriers, and further investigation in animal models is needed for future application in medicine.
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Affiliation(s)
- Nuno Vale
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS) Rua Dr. Plácido da Costa 4200-450 Porto Portugal.,Faculty of Medicine, University of Porto Al. Prof. Hernâni Monteiro 4200-319 Porto Portugal
| | - Sara Silva
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS) Rua Dr. Plácido da Costa 4200-450 Porto Portugal.,Faculty of Pharmacy, University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - Diana Duarte
- OncoPharma Research Group, Center for Health Technology and Services Research (CINTESIS) Rua Dr. Plácido da Costa 4200-450 Porto Portugal.,Faculty of Pharmacy, University of Porto Rua de Jorge Viterbo Ferreira, 228 4050-313 Porto Portugal
| | - Diana M A Crista
- Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto (FCUP) Rua do Campo Alegre 687 4169-007 Porto Portugal ,
| | - Luís Pinto da Silva
- Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto (FCUP) Rua do Campo Alegre 687 4169-007 Porto Portugal ,.,LACOMEPHI, GreenUPorto, Department of Geosciences, Environment and Territorial Planning, Faculty of Sciences of University of Porto (FCUP) Rua do Campo Alegre 687 4169-007 Porto Portugal
| | - Joaquim C G Esteves da Silva
- Chemistry Research Unit (CIQUP), Faculty of Sciences of University of Porto (FCUP) Rua do Campo Alegre 687 4169-007 Porto Portugal ,.,LACOMEPHI, GreenUPorto, Department of Geosciences, Environment and Territorial Planning, Faculty of Sciences of University of Porto (FCUP) Rua do Campo Alegre 687 4169-007 Porto Portugal
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39
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Shi L, Zhou G, Xiang X, Zhang Z, Jia Y, Liu P, Li Z. Nitrogen-sulfur co-doped pH-insensitive fluorescent carbon dots for high sensitive and selective hypochlorite detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 242:118721. [PMID: 32717526 DOI: 10.1016/j.saa.2020.118721] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/02/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
Carbon dots (CDs) are novel fluorescent carbon nanomaterial with exceptional properties and have drawn great attention in recent years. However, the preparation and applications of high-quality carbon dots remain challenging. Here, we describe a simple hydrothermal synthesis route using citric acid as a carbon source for stable fluorescent CDs. The CDs are modified with glutathione and exhibit high fluorescent quantum yields (30.2%) and excellent photo-stability. In addition, the fluorescence intensity of CDs remains stable over a wide range of pH values (3-12). Hypochlorite (ClO-) can effectively quench the fluorescence of the CDs by destroying the pyrrolic ring and conjugate structure of the CDs. Thus, the CDs can be used to detect ClO-. Under optimized conditions, the fluorescence intensity changes of CDs correspond selectively to ClO- in the range of 100-800 nmol/L with a LOD of 16 nmol/L. Practical applications of the proposed method for free chlorine detection in tap water show similar results and recovery compared to the standard DPD-based method. These results suggest that the pH-insensitive CDs prepared via this facile procedure are a promising chemosensor for free chlorine and have great potential in analytical applications.
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Affiliation(s)
- Liyang Shi
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Guohua Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, Guangdong 524048, China.
| | - Xia Xiang
- Department of Product Processing and Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Ministry of Agriculture Key Laboratory of Oil Crops Biology, Wuhan 430062, China
| | - Zhen Zhang
- Department of Product Processing and Nutriology, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Ministry of Agriculture Key Laboratory of Oil Crops Biology, Wuhan 430062, China
| | - Yongmei Jia
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, Guangdong 524048, China.
| | - Peilian Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, Guangdong 524048, China.
| | - Zhiguo Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, Guangdong 524048, China
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40
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Li Z, Wang T, Gu L, Wang H, Zhao Y, Lu S, Zhao W, Sun T. N-doped carbon dots modified with the epithelial cell adhesion molecule antibody as an imaging agent for HepG2 cells using their ultra-sensitive response to Al 3. NANOTECHNOLOGY 2020; 31:485703. [PMID: 33118523 DOI: 10.1088/1361-6528/abb0b5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
Carbon dots (CDs) are emerging as an ideal multifunctional materials due to their ease of preparation and excellent properties in medical imaging technology, environmental monitoring, chemical analysis and other fields. N-doped CDs modified with the epithelial cell adhesion molecule antibody (anti-EpCAM-NCDs) were synthesized in an ingenious and high-output approach. Due to the fluorescence enhancement effect of the introduced N atoms, the obtained anti-EpCAM-NCDs exhibited a strong green emission with an absolute quantum yield of up to 32.5%. Anti-EpCAM-NCDs have immunofluorescent properties and an active targeting function. The fluorescence effect and fluorescence quenching of anti-EpCAM-NCDs are used to image cells and detect Al3+, respectively. Experimental results show that this probe exhibited a wide linear response to Al3+over a concentration range of 0-100μM with a detection limit and quantification limit of 3 nM and 6 nM, respectively. Significantly, anti-EpCAM-NCDs, which have negligible cytotoxicity, excellent biocompatibility and high photostability, could be used for the intracellular imaging of HepG2 cells and the detection of Al3+in environmental and biological samples. As an efficient multifunctional material, anti-EpCAM-NCDs hold great promise for a number of applications in biological systems.
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Affiliation(s)
- Zeyu Li
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Ting Wang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Liyuan Gu
- College of Forestry, Henan Agricultural University, 95 Wenhua Road, 450002, Zhengzhou, People's Republic of China
| | - Henan Wang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Yuliang Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Shuting Lu
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Wancheng Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
| | - Tiedong Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, People's Republic of China
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41
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Guo J, Ye S, Li H, Song J, Qu J. Novel fluorescence probe based on bright emitted carbon dots for ClO - detection in real water samples and living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118592. [PMID: 32615499 DOI: 10.1016/j.saa.2020.118592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Low-toxic and environmentally friendly carbon dots (CDs) have been extensively applied in various fields. CDs usually demonstrate excellent selectivity and high sensitivity, especially in ion detection. However, the most commonly used CDs are excited by ultraviolet (UV) light and emit weak fluorescence light, limiting their application in some fields. Herein, novel fluorine and nitrogen codoped carbon dots (FNCDs) were prepared by a simple hydrothermal method and used as a fluorescent probe for ion detection. The FNCDs were excited by blue light and emitted strong green fluorescence, and the photoluminescence quantum yield was as high as 56.7%. The fluorescence of the FNCDs could be rapidly quenched by ClO- ions, indicating their potential application for ClO- detection. The fluorescence of the FNCDs was quenched by ClO- ions in less than 1 min, and the intensity of the fluorescence decreased linearly as the ClO- concentration increased from 0 to 20 μM. The detection limit was calculated to be as low as 8.2 nM, indicating high sensitivity of the FNCDs probe. The quench effect of the ClO- ions on the FNCDs probe fluorescence was not affected by other ions, demonstrating excellent selectivity of the FNCDs probe. Because of their excellent biological compatibility, the FNCDs were also successfully used to identify exogenous ClO- in living cells. These FNCDs have promising prospects as novel sensitive and inexpensive probes for the detection of pollutants and in the pathological studies of clinical diseases.
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Affiliation(s)
- Jiaqing Guo
- Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, PR China
| | - Shuai Ye
- Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, PR China.
| | - Hao Li
- Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, PR China
| | - Jun Song
- Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, PR China
| | - Junle Qu
- Center for Biomedical Optics and Photonics (CBOP) & College of Physics and Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems, Shenzhen University, Shenzhen 518060, PR China
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42
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He X, White DL, Kapralov AA, Kagan VE, Star A. Photoluminescence Response in Carbon Nanomaterials to Enzymatic Degradation. Anal Chem 2020; 92:12880-12890. [PMID: 32803946 DOI: 10.1021/acs.analchem.0c01380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Myeloperoxidase (MPO), a key enzyme released by neutrophils during inflammation, has been shown to catalyze the biodegradation of carbon nanomaterials. In this work, we perform photoluminescence studies on the MPO-catalyzed oxidation of graphene oxide (GO) and surfactant-coated pristine (6,5) single-walled carbon nanotubes (SWCNTs). The enzymatic degradation mechanism involves the introduction of defects, which promotes further degradation. Interestingly, the photoluminescence responses of GO and SWCNTs to enzymatic degradation are counterposed. Although the near-infrared (NIR) fluorescence intensity of SWCNTs at 998 nm is either unchanged or decreases depending on the surfactant identity, the blue fluorescence intensity of GO at 440 nm increases with the progression of oxidation by MPO/H2O2/Cl- due to the formation of graphene quantum dots (GQDs). Turn-on GO fluorescence is also observed with neutrophil-like HL-60 cells, indicative of potential applications of GO for imaging MPO activity in live cells. Based on these results, we further construct two ratiometric sensors using SWCNT/GO nanoscrolls by incorporating surfactant-wrapped pristine SWCNTs as the internal either turn-off (with sodium cholate (SC)) or reference (with carboxymethylcellulose (CMC)) sensor. The ratiometric approach enables the sensors to be more stable to external noise by providing response invariant to the absolute intensity emitted from the sensors. Our sensors show linear response to MPO oxidative machinery and hold the promise to be used as self-calibrating carbon nanomaterial-based MPO activity indicators.
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Affiliation(s)
- Xiaoyun He
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - David L White
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Alexandr A Kapralov
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Valerian E Kagan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States.,Institute for Regenerative Medicine, Sechenov First Moscow Medical State University, Moscow 119991, Russia
| | - Alexander Star
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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43
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Reversible Aggregation of Molecular-Like Fluorophores Driven by Extreme pH in Carbon Dots. MATERIALS 2020; 13:ma13163654. [PMID: 32824799 PMCID: PMC7476021 DOI: 10.3390/ma13163654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 02/07/2023]
Abstract
The origin of carbon-dots (C-dots) fluorescence and its correlation with the dots structure still lack a comprehensive model. In particular, the core-shell model does not always fit with the experimental results, which, in some cases, suggest a molecular origin of the fluorescence. To gain a better insight, we have studied the response of molecular-like fluorophores contained in the C-dots at extreme pH conditions. Citric acid and urea have been employed to synthesize blue and green-emitting C-dots. They show a different emission as a function of the pH of the dispersing media. The photoluminescence has been attributed to molecular-like fluorophores: citrazinic acid and 4-hydroxy-1H-pyrrolo[3,4-c]-pyridine-1,3,6-(2H,5H)-trione. 3D and time-resolved photoluminescence, ultraviolet-visible (UV-vis) spectroscopy, and dynamic light scattering have been used to determine the aggregation state, quantum yield and emission properties of the C-dots. The dependence of the C-dots blue and green components on the chemical environment indicates that the origin of fluorescence is due to molecular-like fluorophores.
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Ji Z, Yin Z, Jia Z, Wei J. Carbon Nanodots Derived from Urea and Citric Acid in Living Cells: Cellular Uptake and Antioxidation Effect. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8632-8640. [PMID: 32610019 DOI: 10.1021/acs.langmuir.0c01598] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Carbon nanodots (CNDs), reported as polyatomic carbon domains surrounded by amorphous carbon frames, have drawn extensive attention due to their easy-to-synthesis, outstanding electronic properties, and superior biocompatibility. However, substantial assessments regarding their biological performance are still needed, considering the complex nature of this type of relatively new nanoparticles. In this report, CNDs derived from urea and citric acid (U-CNDs) are investigated in the treatment of two cell lines, EA.hy926 and A549 cells, to examine the biocompatibility, cellular uptake, and antioxidation effect. The intracellular uptake study suggests an energy-dependent transport process into the cells mainly involving macropinocytosis and lipid raft-mediated endocytosis pathways. Moreover, the U-CNDs mostly target the mitochondria and present strong antioxidative effects by scavenging reactive oxygen species (ROS) in cells. Overall the findings in this report manifest that the U-CNDs could serve as a bioimaging reagent and antioxidant causing little deleteriousness in the respects of viability, plasma membrane integrity, and mitochondrial activity in both cell lines, and demonstrate some efficacy for inhibiting the metabolic activities of A549 cancer cells at higher concentration.
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Affiliation(s)
- Zuowei Ji
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Ziyu Yin
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
| | - Zhenquan Jia
- Department of Biology, University of North Carolina at Greensboro, Greensboro, North Carolina 27412, United States
| | - Jianjun Wei
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
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45
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Evaluation of Different Bottom-up Routes for the Fabrication of Carbon Dots. NANOMATERIALS 2020; 10:nano10071316. [PMID: 32635483 PMCID: PMC7407658 DOI: 10.3390/nano10071316] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/26/2020] [Accepted: 07/02/2020] [Indexed: 02/07/2023]
Abstract
Carbon dots (CDs) are carbon-based nanoparticles with very attractive luminescence features. Furthermore, their synthesis by bottom-up strategies is quite flexible, as tuning the reaction precursors and synthesis procedures can lead to an endless number of CDs with distinct properties and applications. However, this complex variability has made the characterization of the structural and optical properties of the nanomaterials difficult. Herein, we performed a systematic evaluation of the effect of three representative bottom-up strategies (hydrothermal, microwave-assisted, and calcination) on the properties of CDs prepared from the same precursors (citric acid and urea). Our results revealed that these synthesis routes led to nanoparticles with similar sizes, identical excitation-dependent blue-to-green emission, and similar surface-functionalization. However, we have also found that microwave and calcination strategies are more efficient towards nitrogen-doping than hydrothermal synthesis, and thus, the former routes are able to generate CDs with significantly higher fluorescence quantum yields than the latter. Furthermore, the different synthesis strategies appear to have a role in the origin of the photoluminescence of the CDs, as hydrothermal-based nanoparticles present an emission more dependent on surface states, while microwave- and calcination-based CDs present an emission with more contributions from core states. Furthermore, calcination and microwave routes are more suitable for high-yield synthesis (~27-29%), while hydrothermal synthesis present almost negligible synthesis yields (~2%). Finally, life cycle assessment (LCA) was performed to investigate the sustainability of these processes and indicated microwave synthesis as the best choice for future studies.
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Ramos-Ramón JA, Bogireddy NKR, Giles Vieyra JA, Karthik TVK, Agarwal V. Nitrogen-Doped Carbon Dots Induced Enhancement in CO 2 Sensing Response From ZnO-Porous Silicon Hybrid Structure. Front Chem 2020; 8:291. [PMID: 32432075 PMCID: PMC7214820 DOI: 10.3389/fchem.2020.00291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 03/24/2020] [Indexed: 01/08/2023] Open
Abstract
In this study, we report a simple method for the fabrication of carbon dots sensitized zinc oxide-porous silicon (ZnO-pSi) hybrid structures for carbon dioxide (CO2) sensing. A micro-/nanostructured layer of ZnO is formed over electrochemically prepared pSi substrates using a simple chemical precipitation method. The hybrid structure was structurally and optically characterized using scanning electron microscopy, X-ray diffraction, fluorescence, and cathodoluminescence after the incorporation of hydrothermally prepared nitrogen-doped carbon dots (NCDs) by drop casting. With respect to the control sample, although all the devices show an enhancement in the sensing response in the presence of NCDs, the optimal concentration shows an increase of ~37% at an operating temperature of 200°C and a response time <30 s. The increment in the CO2-sensing response, upon the addition of NCDs, is attributed to an increase in CO2-oxygen species reactions on the ZnO surface due to an increment in the free electron density at the metal-semiconductor-type junction of NCD clusters and ZnO micro-/nanorods. A significant increase in the sensing response (~24%) at low operating temperature (100°C) opens the possibility of developing very large-scale integrable (VLSI), low operational cost gas sensors with easy fabrication methods and low-cost materials.
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Affiliation(s)
- Jesús A. Ramos-Ramón
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Naveen K. R. Bogireddy
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Jorge Arturo Giles Vieyra
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
- Departamento de Metal-Mecánica, Instituto Tecnológico de Zacatepec, Instituto Nacional de México, Zacatepec de Hidalgo, Mexico
| | | | - Vivechana Agarwal
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
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Li LS, Xu L. Highly fluorescent silicon quantum dots decorated silica microspheres for selective detection and removal of Au3+ and subsequent catalytic application. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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Mura S, Ludmerczki R, Stagi L, Garroni S, Carbonaro CM, Ricci PC, Casula MF, Malfatti L, Innocenzi P. Integrating sol-gel and carbon dots chemistry for the fabrication of fluorescent hybrid organic-inorganic films. Sci Rep 2020; 10:4770. [PMID: 32179839 PMCID: PMC7075866 DOI: 10.1038/s41598-020-61517-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 02/27/2020] [Indexed: 01/06/2023] Open
Abstract
Highly fluorescent blue and green-emitting carbon dots have been designed to be integrated into sol-gel processing of hybrid organic-inorganic materials through surface modification with an organosilane, 3-(aminopropyl)triethoxysilane (APTES). The carbon dots have been synthesised using citric acid and urea as precursors; the intense fluorescence exhibited by the nanoparticles, among the highest reported in the scientific literature, has been stabilised against quenching by APTES. When the modification is carried out in an aqueous solution, it leads to the formation of silica around the C-dots and an increase of luminescence, but also to the formation of large clusters which do not allow the deposition of optically transparent films. On the contrary, when the C-dots are modified in ethanol, the APTES improves the stability in the precursor sol even if any passivating thin silica shell does not form. Hybrid films containing APTES-functionalized C-dots are transparent with no traces of C-dots aggregation and show an intense luminescence in the blue and green range.
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Affiliation(s)
- Stefania Mura
- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Róbert Ludmerczki
- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Luigi Stagi
- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Sebastiano Garroni
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Carlo Maria Carbonaro
- Department of Physics, University of Cagliari, Campus of Monserrato, sp n.8, km 0.700, 09042, Monserrato, Italy
| | - Pier Carlo Ricci
- Department of Physics, University of Cagliari, Campus of Monserrato, sp n.8, km 0.700, 09042, Monserrato, Italy
| | - Maria Francesca Casula
- DIMCM-Department of Mechanical, Chemical, and Materials Engineering INSTM and University of Cagliari Via Marengo 2, I, 09123, Cagliari, Italy
| | - Luca Malfatti
- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy
| | - Plinio Innocenzi
- Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100, Sassari, Italy.
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49
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Yan F, Jiang Y, Sun X, Ma T, Chen L, Chen L. 4-aminoantipyrine modified carbon dots and their analytical applications through response surface methodology. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117543. [PMID: 31685428 DOI: 10.1016/j.saa.2019.117543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/12/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
A sensitive and selective nanoprobe for detection of hypochlorite (OCl-) based on 4-aminoantipyrine (AAP) modified carbon dots (CDs-AAP) has been prepared. The CDs-AAP exhibit an emission peak at 484 nm when the excitation wavelength is 370 nm, accompanying 36 nm red shift compare with the pristine CDs. The addition of OCl- lead to the AAP on the surface of CDs experience a process of hydrazide hydrolysis and double bond addition, causing the singlet and triplet electrons of the excited state more closer in energy (ie, the energy difference between the two is reduced), eventually quenching the fluorescence of CDs due to heavy atomic effects. Central composite design (CCD) and response surface method (RSM) were used to optimize the detection variables of pH, incubation time and temperature. The designed model study indicated that the optimum detection conditions was pH 7.0, temperature 30 °C and incubation time 20 min, respectively. Under optimal conditions, the fluorescent intensity of the nanoprobe linearly responded to the OCl- concentration from 3 μM to 36 μM and the limit of detection was 40 nM. The proposed nanoprobe was successfully used to the detection of OCl- in tap water and pool water, and the recovery were in the range of 94% - 103%. In addition, the nanoprobe was also applied in imaging of VMSCs cells and labeling E.coli.
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Affiliation(s)
- Fanyong Yan
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Yingxia Jiang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering Tianjin Polytechnic University, Tianjin, 300387, China
| | - Xiaodong Sun
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering Tianjin Polytechnic University, Tianjin, 300387, China
| | - Tengchuang Ma
- Department of Nuclear Medicine, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, 150081, China
| | - Liang Chen
- Graduate School of Life Science, Hokkaido University, Sapporo, 0010024, Japan
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering Tianjin Polytechnic University, Tianjin, 300387, China
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50
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Stepanidenko EA, Arefina IA, Khavlyuk PD, Dubavik A, Bogdanov KV, Bondarenko DP, Cherevkov SA, Kundelev EV, Fedorov AV, Baranov AV, Maslov VG, Ushakova EV, Rogach AL. Influence of the solvent environment on luminescent centers within carbon dots. NANOSCALE 2020; 12:602-609. [PMID: 31828268 DOI: 10.1039/c9nr08663c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Carbon dots (CDs) are luminescent nanomaterials, with potential use in bioimaging and sensorics. Here, the influence of the surrounding solvent media on the optical properties of CDs synthesized from the most commonly employed precursors, namely citric acid and ethylenediamine, is investigated. The position of optical transitions of CDs can be tuned by the change of pH and solvent polarity. The most striking observation is related to the interaction of CDs with chlorine containing solvents, which results in resolving a set of narrow peaks within both the absorption and PL bands, similar to those observed for polycyclic aromatic hydrocarbons or organic dyes. We assume that the chlorine containing molecules penetrate the surface layers of CDs, which results in an increase of the distance between the luminescent centers; this correlates well with an enhanced D-band in their Raman spectra. A model of CDs composed of a matrix of hydrogenated amorphous carbon with the inclusions of sp2-domains formed by polycyclic aromatic hydrocarbons and their derivatives is suggested; the latter are stacked ensembles of the luminophores and are considered as the origin of the emission of CDs.
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Affiliation(s)
- Evgeniia A Stepanidenko
- Center of Information Optical Technologies, ITMO University, Saint Petersburg 197101, Russia.
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