301
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Zhao S, Lan M, Zhu X, Xue H, Ng TW, Meng X, Lee CS, Wang P, Zhang W. Green Synthesis of Bifunctional Fluorescent Carbon Dots from Garlic for Cellular Imaging and Free Radical Scavenging. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17054-60. [PMID: 26193082 DOI: 10.1021/acsami.5b03228] [Citation(s) in RCA: 292] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Nitrogen and sulfur codoped carbon dots (CDs) were prepared from garlic by a hydrothermal method. The as-prepared CDs possess good water dispersibility, strong blue fluorescence emission with a fluorescent quantum yield of 17.5%, and excellent photo and pH stabilities. It is also demonstrated that the fluorescence of CDs are resistant to the interference of metal ions, biomolecules, and high ionic strength environments. Combining with low cytotoxicity properties, CDs could be used as an excellent fluorescent probe for cellular multicolor imaging. Moreover, the CDs were also demonstrated to exhibit favorable radical scavenging activity.
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Affiliation(s)
- Shaojing Zhao
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Minhuan Lan
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Xiaoyue Zhu
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Hongtao Xue
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Tsz-Wai Ng
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Xiangmin Meng
- §Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Chun-Sing Lee
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
| | - Pengfei Wang
- §Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Wenjun Zhang
- ‡Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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302
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Duan J, Chen S, Jaroniec M, Qiao SZ. Heteroatom-Doped Graphene-Based Materials for Energy-Relevant Electrocatalytic Processes. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00991] [Citation(s) in RCA: 699] [Impact Index Per Article: 77.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jingjing Duan
- School
of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Sheng Chen
- School
of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Mietek Jaroniec
- Department
of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44240, United States
| | - Shi Zhang Qiao
- School
of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
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303
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Fe(3+)-functionalized carbon quantum dots: A facile preparation strategy and detection for ascorbic acid in rat brain microdialysates. Talanta 2015; 144:1301-7. [PMID: 26452962 DOI: 10.1016/j.talanta.2015.08.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 07/28/2015] [Accepted: 08/02/2015] [Indexed: 11/22/2022]
Abstract
This study reports an Fe(3+)-functionalized carbon quantum dots (Fe(3+)-functionalized CQDs) for the highly sensitive and selective detection of ascorbic acid (AA) in rat brain microdialysates based on the specific redox reaction between iron(III) ions and AA. The carbon quantum dots (CQDs) were synthesized by one-step pyrolysis of a small organic molecules i.e. tris(hydroxymethyl)aminomethane (Tris). Fe(3+) can tightly chelate to the surface of CQDs by the hydroxyl group to form Fe(3+)-functionalized CQDs while the fluorescence of CQDs can be effectively quenched by Fe(3+) via Fluorescence resonance energy transfer (FRET). The fluorescence of the Fe(3+)-functionalized CQDs can be sensitively turned on by AA to give an "on-off-on" fluorescence response through the oxidation-reduction between Fe(3+) and AA since the produced Fe(2+) has much lower chelating ability to CQDs and the fluorescence of CQDs can be restored. This Fe(3+)-functionalized CQDs based nanoprobe shows high selective and sensitive response in the concentration of AA ranging from 0.1 μM to 50 μM with the detection limit as lower as 9.1 nM, which is lower than other assays. Finally, the proposed fluorescent probe was successfully applied to direct analysis of AA in biological fluids, i.e. rat brain microdialysates, and may pave a new route to the design of effective carbon quantum dots-based fluorescence probes for other bioassay.
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304
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Wang Y, Kim SH, Feng L. Highly luminescent N, S- Co-doped carbon dots and their direct use as mercury(II) sensor. Anal Chim Acta 2015; 890:134-42. [DOI: 10.1016/j.aca.2015.07.051] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 07/01/2015] [Accepted: 07/03/2015] [Indexed: 01/24/2023]
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305
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Liu Y, Yan K, Okoth OK, Zhang J. A label-free photoelectrochemical aptasensor based on nitrogen-doped graphene quantum dots for chloramphenicol determination. Biosens Bioelectron 2015; 74:1016-21. [PMID: 26264269 DOI: 10.1016/j.bios.2015.07.067] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 07/13/2015] [Accepted: 07/28/2015] [Indexed: 11/30/2022]
Abstract
A photoelectrochemical (PEC) sensing platform for chloramphenicol (CAP) detection was constructed using nitrogen-doped graphene quantum dots (N-GQDs) as transducer species and label-free aptamer as biological recognition element. N-GQDs, synthesized via a facile one-step hydrothermal method, were explored to achieve highly efficient photon-to-electricity conversion under visible light irradiation. The obtained N-GQDs were characterized by transmission electron microscopy (TEM), which displayed a narrow size distribution with a mean diameter of 2.14 nm. The X-ray photoelectron spectroscopic (XPS) and Fourier transform infrared spectroscopic (FT-IR) analysis confirmed that nitrogen was successfully doped in GQDs. The UV-visible absorption spectra indicated that nitrogen doping obviously enhanced the absorption of GQDs in visible light region. As a result, the PEC activity of GQDs was promoted by nitrogen doping. Additionally, the π-conjugated structure of N-GQDs provided an excellent platform for aptamer immobilization via π-π stacking interaction. Such an aptamer/N-GQDs based sensor showed a linear PEC response to CAP concentration in the range of 10-250 nM with a detection limit (3 S/N) of 3.1 nM. The developed PEC aptasensor exhibited high sensitivity and selectivity, good reproducibility and high stability.
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Affiliation(s)
- Yong Liu
- Key Laboratory for Large-Format Battery Materials and System (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Kai Yan
- Key Laboratory for Large-Format Battery Materials and System (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Otieno Kevin Okoth
- Key Laboratory for Large-Format Battery Materials and System (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China
| | - Jingdong Zhang
- Key Laboratory for Large-Format Battery Materials and System (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, PR China.
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306
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Yuan F, Ding L, Li Y, Li X, Fan L, Zhou S, Fang D, Yang S. Multicolor fluorescent graphene quantum dots colorimetrically responsive to all-pH and a wide temperature range. NANOSCALE 2015; 7:11727-33. [PMID: 26102292 DOI: 10.1039/c5nr02007g] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Smart functional nanomaterials colorimetrically responsive to all-pH and a wide temperature range are urgently needed due to their widespread applications in biotechnology, drug delivery, diagnosis and optical sensing. Although graphene quantum dots possess remarkable advantages in biological applications, they are only stable in neutral or weak acidic solutions, and strong acidic or alkaline conditions invariably suppress or diminish the fluorescence intensity. Herein, we report a new type of water-soluble, multicolor fluorescent graphene quantum dot which is responsive to all-pH from 1 to 14 with the naked eye. The synthesis was accomplished by electrolysis of the graphite rod, followed by refluxing in a concentrated nitric and sulfuric acid mixed solution. We demonstrate the novel red fluorescence of quinone structures transformed from the lactone structures under strong alkaline conditions. The fluorescence of the resulting graphene quantum dots was also found to be responsive to the temperature changes, demonstrating their great potential as a dual probe of pH and temperature in complicated environments such as biological media.
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Affiliation(s)
- Fanglong Yuan
- Department of Chemistry, Beijing Normal University, Beijing, 100875, China.
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307
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Kundu S, Yadav RM, Narayanan TN, Shelke MV, Vajtai R, Ajayan PM, Pillai VK. Synthesis of N, F and S co-doped graphene quantum dots. NANOSCALE 2015; 7:11515-11519. [PMID: 26087457 DOI: 10.1039/c5nr02427g] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Graphene quantum dots (GQDs) are a promising category of materials with remarkable size dependent properties like tunable bandgap and photoluminescence along with the possibility of effective chemical functionalization. Doping of GQDs with heteroatoms is an interesting way of regulating their properties. Herein, we report a facile and scalable one-step synthesis of luminescent GQDs, substitutionally co-doped with N, F and S, of ∼2 nm average size by a microwave treatment of multi-walled carbon nanotubes in a customized ionic liquid medium. The use of an ionic liquid coupled with the use of a microwave technique enables not only an ultrafast process for the synthesis of co-doped GQDs, but also provides excellent photoluminescence quantum yield (70%), perhaps due to the interaction of defect clusters and dopants.
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Affiliation(s)
- Sumana Kundu
- Academy of Scientific & Innovative Research, Chennai, 600113, India
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308
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Li L, Yu B, You T. Nitrogen and sulfur co-doped carbon dots for highly selective and sensitive detection of Hg (II) ions. Biosens Bioelectron 2015; 74:263-9. [PMID: 26143466 DOI: 10.1016/j.bios.2015.06.050] [Citation(s) in RCA: 262] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 06/19/2015] [Accepted: 06/20/2015] [Indexed: 01/07/2023]
Abstract
Nitrogen and sulfur co-doped carbon dots (N,S/C-dots) with high fluorescence quantum yields (FLQY, 25%) was successfully synthesized by a one-step microwave-assisted method. In comparison with nitrogen doped C-dots (N/C-dots) prepared using the same method, the resulting N,S/C-dots featured small particle size, uniform surface state, insensitive FL properties to excitation wavelengths and environmental conditions, negligible cytotoxicity and excellent biocompatibility. Simultaneous doping of N and S effectively promoted electron-transfer and coordination interaction between N,S/C-dots and Hg(2+). Thus, when used as fluorescence probe for Hg(2+) label-free detection, the resulting N,S/C-dots showed good detection sensitivity and ion selectivity. The limit of detection was 2 μM; among 15 metal ions investigated, only Fe(3+) showed interference to the Hg(2+) detection. Fortunately, this interference could be effectively shielded using a chelating agent sodium hexametaphoshpate. The applicability of N,S/C-dots as fluorescence probe for Hg(2+) detection in lake water and tap water was demonstrated. Finally, based on its favorable features of negligible cytotoxicity and excellent biocompatibility, the N,S/C-dots were successfully applied to probe Hg(2+) in living cells, which broaden its application in biological system.
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Affiliation(s)
- Libo Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Bin Yu
- College of Life Science, Jilin University, Changchun, Jilin 130012, China
| | - Tianyan You
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
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309
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Zhang Y, Wang Y, Guan Y, Feng L. Uncovering the pKa dependent fluorescence quenching of carbon dots induced by chlorophenols. NANOSCALE 2015; 7:6348-55. [PMID: 25785565 DOI: 10.1039/c5nr00490j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Fluorescence quenching induced by targets is always an alluring strategy to elucidate the possible photoluminescence origin of carbon dots. In this study, a new kind of N, S co-doped carbon dots (NSCDs) was synthesized and the fluorescence of NSCDs was surprisingly found to be quenched by chlorophenols (CPs) in a pKa dependent mode. Detailed investigation of this behavior demonstrated that phenolate was the responsible species and N and/or S dopants in NSCDs failed to play a role in the fluorescence quenching. Further evidence uncovered that the quenching was a static one, where a non-fluorescent intermediate was formed between electron-deficient C=O on the CDs surface and the electron-rich phenolic oxygen anion of chlorophenolate via nucleophilic addition. Moreover, one of the main photoluminescence origins of this kind of CDs was derived, namely surface emissive sites mostly attributed to carbonyl groups.
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Affiliation(s)
- Yu Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, P. R. China.
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310
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Gao X, Lu Y, He S, Li X, Chen W. Colorimetric detection of iron ions (III) based on the highly sensitive plasmonic response of the N-acetyl-L-cysteine-stabilized silver nanoparticles. Anal Chim Acta 2015; 879:118-25. [PMID: 26002486 DOI: 10.1016/j.aca.2015.04.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/29/2015] [Accepted: 04/01/2015] [Indexed: 12/21/2022]
Abstract
We report here a facile colorimetric sensor based on the N-acetyl-L-cysteine (NALC)-stabilized Ag nanoparticles (NALC-Ag NPs) for detection of Fe(3+) ions in aqueous solution. The Ag NPs with an average diameter of 6.55±1.0 nm are successfully synthesized through a simple method using sodium borohydride as reducing agent and N-acetyl-L-cysteine as protecting ligand. The synthesized silver nanoparticles show a strong surface plasmon resonance (SPR) around 400 nm and the SPR intensity decreases with the increasing of Fe(3+) concentration in aqueous solution. Based on the linear relationship between SPR intensity and concentration of Fe(3+) ions, the as-synthesized water-soluble silver nanoparticles can be used for the sensitive and selective detection of Fe(3+) ions in water with a linear range from 80 nM to 80 μM and a detection limit of 80 nM. On the basis of the experimental results, a new detection mechanism of oxidation-reduction reaction between Ag NPs and Fe(3+) ions is proposed, which is different from previously reported mechanisms. Moreover, the NALC-Ag NPs could be applied to the detection of Fe(3+) ions in real environmental water samples.
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Affiliation(s)
- Xiaohui Gao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Yizhong Lu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Shuijian He
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Xiaokun Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Wei Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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311
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Wu J, Dai J, Shao Y, Sun Y. One-step synthesis of fluorescent silicon quantum dots (Si-QDs) and their application for cell imaging. RSC Adv 2015. [DOI: 10.1039/c5ra13119g] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Novel fluorescent silicon quantum dots (Si-QDs) were synthesized by a one-step hydrothermal procedure using (3-aminopropyl)trimethoxysilane (APTES) as a silicon source and sodium ascorbate (SA) as a reducing agent.
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Affiliation(s)
- Jinzhu Wu
- Department of Chemistry
- School of Science
- Harbin Institute of Technology
- Harbin 150001
- People's Republic of China
| | - Jun Dai
- Department of Chemistry
- School of Science
- Harbin Institute of Technology
- Harbin 150001
- People's Republic of China
| | - Yanbin Shao
- The Academy of Fundamental and Interdisciplinary Sciences
- Harbin Institute of Technology
- Harbin 150001
- People's Republic of China
| | - Yanchun Sun
- Chinese Academy of Fishery Sciences
- Heilongjiang River Fishery Research Institute
- Harbin 150001
- People's Republic of China
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312
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Zhao X, Gao J, He X, Cong L, Zhao H, Li X, Tan F. DNA-modified graphene quantum dots as a sensing platform for detection of Hg2+in living cells. RSC Adv 2015. [DOI: 10.1039/c5ra06984j] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile method for detection of Hg2+in living cells based on DNA modified graphene quantum dots.
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Affiliation(s)
- Xin Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - Jinsuo Gao
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - Xin He
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - Longchao Cong
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - Huimin Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
| | - Xiaoyu Li
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116024
- China
| | - Feng Tan
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- China
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313
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Fan Z, Li S, Yuan F, Fan L. Fluorescent graphene quantum dots for biosensing and bioimaging. RSC Adv 2015. [DOI: 10.1039/c4ra17131d] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Graphene quantum dots with unique properties have great potential applications for biosensing and bioimaging.
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Affiliation(s)
- Zetan Fan
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Shuhua Li
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Fanglong Yuan
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Louzhen Fan
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
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314
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Hai X, Mao QX, Wang WJ, Wang XF, Chen XW, Wang JH. An acid-free microwave approach to prepare highly luminescent boron-doped graphene quantum dots for cell imaging. J Mater Chem B 2015; 3:9109-9114. [DOI: 10.1039/c5tb01954k] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Highly luminescent graphene quantum dots (GQDs) are obtained by restoring the defects of GQDs via incorporation of B atoms into the graphene framework, which exhibits great potential in bio-imaging.
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Affiliation(s)
- Xin Hai
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
| | - Quan-Xing Mao
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
| | - Wen-Jing Wang
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
| | - Xiao-Feng Wang
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
| | - Xu-Wei Chen
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences
- College of Sciences
- Northeastern University
- Shenyang
- China
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315
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An X, Zhuo S, Zhang P, Zhu C. Carbon dots based turn-on fluorescent probes for oxytetracycline hydrochloride sensing. RSC Adv 2015. [DOI: 10.1039/c4ra16456c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A well-designed turn-on sensor has been constructed and used for the assay of oxytetracycline hydrochloride in real milk samples.
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Affiliation(s)
- Xuting An
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo-Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Shujuan Zhuo
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo-Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Ping Zhang
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo-Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Changqing Zhu
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Chemo-Biosensing
- College of Chemistry and Materials Science
- Anhui Normal University
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316
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Tan X, Li Y, Li X, Zhou S, Fan L, Yang S. Electrochemical synthesis of small-sized red fluorescent graphene quantum dots as a bioimaging platform. Chem Commun (Camb) 2015; 51:2544-6. [DOI: 10.1039/c4cc09332a] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report water-soluble, 3 nm uniform-sized graphene quantum dots (GQDs) with red emission prepared by electrochemical exfoliation of graphite in K2S2O8 solution. Such GQDs show a great potential as biological labels for cellular imaging.
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Affiliation(s)
- Xiaoyun Tan
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Yunchao Li
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Xiaohong Li
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Shixin Zhou
- Department of Cell Biology
- School of Basic Medicine
- Peking University Health Science Center
- Beijing
- China
| | - Louzhen Fan
- Department of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Shihe Yang
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- China
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