1
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Zeng H, Peng H, He H, Feng J, Sun Y, He H, Li L. Green and Low-temperature Synthesis of Carbon Dots for Simple Detection of Kaempferol. J Fluoresc 2023; 33:1971-1979. [PMID: 36933122 DOI: 10.1007/s10895-023-03204-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023]
Abstract
As a common flavonols, kaempferol (Kae) has a broad market as health food and medicine for its anti-inflammatory, anti-oxidation, and anti-cancer properties. In this study, a novel convenient and simple fluorescent sensor based on carbon dots (CDs) for the detection of Kae was developed. The fluorescent CDs, with excellent photo-luminescence (PL) and up-conversion luminescence (UCPL) properties, were successfully prepared by low-temperature oil bath reaction based on ascorbic acid as carbon source at 90 °C in one pot. Under the optimal conditions, the fluorescence (FL) intensity of CDs was gradually quenched by the increasing addition of Kae with a linear relationship between F0/F and Kae concentration in a wide range from 5 µM to 100 µM with a detection limit of 0.38 µM. And this designed sensor was favourably applied for the detection of Kae in actual sample (xin-da-kang tablets). Moreover, the proposed CDs has great application prospects as a drug-sensor for detecting Kae due to its simple operation, economical and green materials, low equipment requirement, and rapid detection.
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Affiliation(s)
- Hongyan Zeng
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China.
| | - Huan Peng
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China
| | - Hongmei He
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China
| | - Jinrong Feng
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China
| | - Yiqiang Sun
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China
| | - Huanyu He
- School of Materials and Chemical Engineering, Pingxiang University, 337055, Pingxiang, PR China
| | - Li Li
- Department of Chemistry, College of Sciences, Shanghai University, 200444, Shanghai, PR China.
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2
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Xu O, Yang J, Song H, Dong L, Xia J, Zhu X. Novel Zn/Co–N co-doped carbon quantum dot-based “on-off-on” fluorescent sensor for Fe(III) and ascorbic acid. TALANTA OPEN 2023. [DOI: 10.1016/j.talo.2022.100162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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3
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Zhang Y, Wen J, Zhou Y, Wang J, Cheng W. Novel efficient capture of hexavalent chromium by polyethyleneimine/amyloid fibrils/polyvinyl alcohol aerogel beads: Functional design, applicability, and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:132017. [PMID: 37429193 DOI: 10.1016/j.jhazmat.2023.132017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 07/12/2023]
Abstract
The harmful effects of hexavalent chromium (Cr(VI)) on the environment and human health have aroused wide public concern. In this study, bulk spherical aerogel beads (PAP) were synthesized from polyethyleneimine (PEI), protein amyloid fibrils (AFL), and polyvinyl alcohol (PVA) through green technology and its removal of Cr(VI) from wastewater was comprehensively studied. The results showed that although the bulk PAP beads (∼ 5 mm) only had an average pore size of 16.88 nm and a BET surface area of 12 m2/g, its maximum adsorption capacity for Cr(VI) reached 121.44 mg/g (at 298 K). Cr(VI) adsorption onto PAP conformed to pseudo-second-order adsorption kinetics and was endothermic. The adsorption of Cr(VI) decreased stepwise with the increase of solution alkalinity (pH = 2: 91.97%; pH = 10: 0.04%). Importantly, PAP showed high selectivity towards Cr(VI) in mixed heavy metal solutions (Cr(VI) > Pb(II) > Ni(II) > Cu(II) > Cd(II)) and good reusability (removal efficiency > 88% after 5 cycles). PAP had excellent anti-interference ability against FA and HCO3- with the overall removal rate exceeding 87% in the presence of 5 - 25 mg/L of these ions. Cations such as Na+, Mg2+, and other heavy metal ions at high concentrations could promote the removal efficiency of Cr(VI). The removal rates of Cr(VI) and Cr(III) by PAP in a tannery wastewater were 34.4% and 59.3%, respectively. Meanwhile, the removal rates of Cr(VI) in a electroplating wastewater and a contaminated soil leachate reached 84.4∼89.7%, showing high practicability. Mechanism studies revealed that electrostatic attraction, hydrogen bonding, reduction, and complexation were the main reactions for Cr(VI) removal by PAP. In general, the study of PAP provides a new insight into using bulk monolith materials for treating Cr(VI) contaminated wastewater.
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Affiliation(s)
- Yuru Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Jia Wen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China; Research Institute of Hunan University in Chongqing, Chongqing 401120, PR China.
| | - Yichen Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Jiajia Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Wenxing Cheng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
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4
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Alhazzani K, A.Z. A, Alaseem AM, Al Awadh SA, Alanazi SA, AlSayyari AA, Alanazi MM, El-Wekil MM. A reliable ratiometric fluorescence sensing of heparin and its antidote based on cationic carbon quantum dots and acid red 87. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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5
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Chen W, Hu D, Yang M, Zhu Y, Wu Y, Li X, Zhang J, Yang J, Huang Y, Xie J. A novel fluorescent nanoprobe for sensitive detection of 6-thioguanine in human serum based on Cu/Ag nanoclusters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2270-2274. [PMID: 37129412 DOI: 10.1039/d3ay00245d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
6-Thioguanine (6-TG) is a purine analog anticancer drug used to treat childhood acute leukemia and inflammatory bowel disease; however, the over-dosage use of 6-TG can cause serious adverse effects. Therefore, monitoring the free 6-TG concentration in the human body is critical during drug therapy. In this work, a highly sensitive and rapid fluorescent nanoprobe based on Cu/Ag nanoclusters (NCs) for the detection of 6-TG was developed. The maximum emission wavelength of Cu/Ag NCs was observed at 563 nm with an excitation wavelength of 330 nm. A selective fluorescence quenching effect of 6-TG on the Cu/Ag NCs was found. Under optimum conditions for the determination of 6-TG, a wide linear concentration range from 2.5 to 100 μmol L-1 was observed with a limit of detection (LOD) of 1.57 μmol L-1. The characteristics of simple operation, high sensitivity and selectivity make this fluorescent nanoprobe a promising candidate for the detection of 6-TG in biological samples, as demonstrated by the application in spiked human serum with recoveries of 97.6 to 104.8%. In general, this proposed method has good potential for the detection of 6-TG in biological samples.
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Affiliation(s)
- Wenjing Chen
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Dongbao Hu
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Meng Yang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Yi Zhu
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Yunying Wu
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Xi Li
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Juntong Zhang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Jiqiu Yang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Yan Huang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi, 653100, P. R. China
| | - Jianxin Xie
- School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalites, Duyun, 558000, P. R. China.
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6
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Huang S, Song Y, Zhang JR, Chen X, Zhu JJ. Antibacterial Carbon Dots-Based Composites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2207385. [PMID: 36799145 DOI: 10.1002/smll.202207385] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 01/20/2023] [Indexed: 06/18/2023]
Abstract
The emergence and global spread of bacterial resistance to conventionally used antibiotics have highlighted the urgent need for new antimicrobial agents that might replace antibiotics. Currently, nanomaterials hold considerable promise as antimicrobial agents in anti-inflammatory therapy. Due to their distinctive functional physicochemical characteristics and exceptional biocompatibility, carbon dots (CDs)-based composites have attracted a lot of attention in the context of these antimicrobial nanomaterials. Here, a thorough assessment of current developments in the field of antimicrobial CDs-based composites is provided, starting with a brief explanation of the general synthesis procedures, categorization, and physicochemical characteristics of CDs-based composites. The many processes driving the antibacterial action of these composites are then thoroughly described, including physical destruction, oxidative stress, and the incorporation of antimicrobial agents. Finally, the obstacles that CDs-based composites now suffer in combating infectious diseases are outlined and investigated, along with the potential applications of antimicrobial CDs-based composites.
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Affiliation(s)
- Shan Huang
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Yuexin Song
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Jian-Rong Zhang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Xiaojun Chen
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Jun-Jie Zhu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
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7
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Bin Y, Liang Q, Luo H, Chen Y, Wang T. One-step synthesis of nitrogen-functionalized graphene aerogel for efficient removal of hexavalent chromium in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:6746-6757. [PMID: 36002790 DOI: 10.1007/s11356-022-22591-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/13/2022] [Indexed: 06/15/2023]
Abstract
The efficient removal of hexavalent chromium (Cr(VI)) with high toxicity has attracted widespread concern since it causes serious harm to ecological environment and public health. Herein, we report a novel nitrogen-functionalized graphene aerogel with stereoscopic structure through a simple hydrothermal method and freeze drying for Cr(VI) removal from water. Graphene oxide (GO) and nitrogenous organics polyethyleneimine (PEI) and pyrrole are used as raw materials for preparing PEI/polypyrrole/GO aerogel (PPGA) adsorbent. PEI and pyrrole act as nitrogen sources to introduce nitrogenous functional groups, and also take on the role of cross-linkers for helping GO sheets to form stereoscopic structure. The obtained PPGA has a fast adsorption rate, excellent reusability, and shows a remarkable adsorption capacity for Cr(VI) up to 458.24 mg/g under the optimal conditions (pH 2.0, 298 K, Cr(VI): 600 mg/L, dosage: 0.4 g/L). The adsorption process of Cr(VI) on PPGA can fit the pseudo-second-order kinetic model well. Analysis of intraparticle diffusion shows that the Cr(VI) removal process is a multi-step process. Adsorption thermodynamic and isotherm results demonstrate Cr(VI) adsorption on PPGA is a spontaneous endothermic process. The adsorption mechanism involves electrostatic attraction, redox, and chelation. In general, this work provides a simple and eco-friendly way to prepare PPGA, which has a great potential for actual application of Cr(VI) removal in effluent.
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Affiliation(s)
- Yuliang Bin
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Qianwei Liang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Hanjin Luo
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, China.
| | - Yuyu Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Tao Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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8
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Li H, Huang Y, Luo Q, Liu J. The simultaneous reduction and adsorption for V(V) and Cr(VI) anionic species in aqueous solution by polyethyleneimine cross-linked titanate nanotubes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Preparation of Polyvinyl Imine Modified Carbon Quantum Dots and Their Application in Methotrexate Detection. Molecules 2022; 27:molecules27165254. [PMID: 36014493 PMCID: PMC9415630 DOI: 10.3390/molecules27165254] [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: 07/10/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/27/2022] Open
Abstract
Objective: A sensitive and selective fluorescence-detection platform based on carbon quantum dots (CQDs) was designed and developed for the determination of methotrexate (MTX), for the purpose of minimizing the possible toxic threat of MTX in clinics. Methods: The approach was prepared for the first time by a simple, hydrothermal method, making the synthesis and modification processes realized in one step using polyethyleneimine (PEI), and the proposed PEI-CQDs were obtained with high fluorescence quantum yield (38%). Results: MTX was found highly responsive and effective in quenching the fluorescence of the PEI-CQDs, due to a suggested fluorescence resonance energy transfer mechanism or inner-filter effect. The linear range of MTX was between 1 and 600 μmol/L under optimum conditions, with a detection limit (LOD) as low as 0.33 μmol/L. Furthermore, the fluorescent method was established for the MTX assay, and satisfactory results were acquired in real-sample determination. The average labeled quantity was 98.2%, and the average added standard recovery was 100.9%. Conclusions: The proposed PEI-CQDs showed a remarkable potential for broad applications in biological molecule determination and environmental analysis.
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10
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Wu J, Chen G, Jia Y, Ji C, Wang Y, Zhou Y, Leblanc RM, Peng Z. Carbon dot composites for bioapplications: a review. J Mater Chem B 2022; 10:843-869. [DOI: 10.1039/d1tb02446a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recent advancements in the synthesis of carbon dot composites and their applications in biomedical fields (bioimaging, drug delivery and biosensing) have been carefully summarized. The current challenges and future trends of CD composites in this field have also been discussed.
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Affiliation(s)
- Jiajia Wu
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Gonglin Chen
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Yinnong Jia
- Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, School of Pharmaceutical Sciences, Kunming Medical University, Kunming 650500, People's Republic of China
| | - Chunyu Ji
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
| | - Yuting Wang
- Yunnan Provincial Key Laboratory of Pharmacology for Natural Products, School of Pharmaceutical Sciences, Kunming Medical University, Kunming 650500, People's Republic of China
| | - Yiqun Zhou
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA
| | - Roger M. Leblanc
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146, USA
| | - Zhili Peng
- School of Materials and Energy, Yunnan University, Kunming 650091, People's Republic of China
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11
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Cheng CW, Lo KM, Li MF, Chiu TC, Hu CC. Facile synthesis of dual-emission fluorescent carbon nanodots for a multifunctional probe. RSC Adv 2021; 11:39958-39965. [PMID: 35494123 PMCID: PMC9044676 DOI: 10.1039/d1ra07826g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 12/06/2021] [Indexed: 11/21/2022] Open
Abstract
In this study, we developed a facile method for synthesizing dual-emission carbon nanodots (CDs) through trimesic acid and o-phenylenediamine through electrolysis for 2 h. The synthesized CDs were mainly 3-7 nm in size, with an average size of 5.17 nm. The dual-emission fluorescent property of these CDs could be observed under two different excitation wavelengths. The green emission of the CDs could be quenched after the addition of mercury ions or copper ions, and the blue emission of the CDs could be inhibited using hydroxychloroquine (HCQ). Furthermore, the quenched fluorescence of CDs/Cu2+ could be recovered through the addition of glyphosate. We developed a multifunctional chemical sensor by using these special fluorescence materials. Under optimal conditions, the detection limits of mercury ions, glyphosate, and HCQ were 0.42 μM, 1.1 mg L-1, and 0.14 μM, respectively. Moreover, this method can be used to detect mercury ions, glyphosate, and HCQ in environmental water, cereals, and urine samples, respectively.
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Affiliation(s)
- Chin-Wei Cheng
- Department of Applied Science, National Taitung University Taiwan Republic of China
| | - Kuan-Min Lo
- Department of Applied Science, National Taitung University Taiwan Republic of China
| | - Min-Feng Li
- Department of Applied Science, National Taitung University Taiwan Republic of China
| | - Tai-Chia Chiu
- Department of Applied Science, National Taitung University Taiwan Republic of China
| | - Cho-Chun Hu
- Department of Applied Science, National Taitung University Taiwan Republic of China
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12
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Zhang Q, Li X, Peng L, Zou X, Zhao Y. Porous silica nanoparticles capped with polyethylenimine/green carbon dots for pH/redox responsive drug release. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2020.108340] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Cao FJ, Wang L, Feng CL, Lin X, Feng H. Synthesis of polyurethane-derived nitrogen-doped carbon dots for a high-performance fluorescence bioimaging probe. RSC Adv 2021. [DOI: 10.1039/d1ra06334k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A universal and robust strategy using polyurethane sponge as a precursor was developed to synthesize highly-soluble nitrogen-doped carbon quantum dots via a solvothermal method.
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Affiliation(s)
- Fang-Jun Cao
- Shaanxi Institute of Zoology, Xi'an, Shaanxi 710072, P. R. China
| | - Lu Wang
- Shaanxi Institute of Zoology, Xi'an, Shaanxi 710072, P. R. China
| | - Cheng-Li Feng
- Shaanxi Institute of Zoology, Xi'an, Shaanxi 710072, P. R. China
| | - Xiao Lin
- School of Life Science, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, P. R. China
| | - Hui Feng
- Shaanxi Institute of Zoology, Xi'an, Shaanxi 710072, P. R. China
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14
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Chen W, Fan J, Wu X, Hu D, Wu Y, Feng Z, Yan M, Gao X, Xie J. Facile synthesis of nitrogen-doped carbon dots from pork liver and its sensing of 6-thioguanine based on the inner filter effect. NEW J CHEM 2021. [DOI: 10.1039/d0nj05483f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Nitrogen-doped carbon dots were facilely synthesized from pork liver and the fluorescence quenching determination of 6-thioguanine in human serum based on the inner filter effect was achieved with the limit of detection as low as 0.75 μM.
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Affiliation(s)
- Wenjing Chen
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Jun Fan
- School of Chemistry
- South China Normal University
- Guangzhou
- P. R. China
| | - Xianxue Wu
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Dongbao Hu
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Yunying Wu
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Zhongmin Feng
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Meiyun Yan
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Xizhu Gao
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
| | - Jianxin Xie
- College of Chemistry Biology and Environment
- Yuxi Normal University
- Yuxi
- P. R. China
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15
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Amer Ridha A, Pakravan P, Hemati Azandaryani A, Zhaleh H. Carbon dots; the smallest photoresponsive structure of carbon in advanced drug targeting. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101408] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Zhang H, Dong X, Wang J, Guan R, Cao D, Chen Q. Fluorescence Emission of Polyethylenimine-Derived Polymer Dots and Its Application to Detect Copper and Hypochlorite Ions. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32489-32499. [PMID: 31393690 DOI: 10.1021/acsami.9b09545] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polymer dots with nonconjugated groups that are facile to synthesize and environmentally friendly generally attract substantial interest. However, their fluorescence-emitting mechanisms are not clear. In this paper, nonconjugated polymer dots (N-PDs) are synthesized by amidation reaction between polyethylenimine (PEI) and citric acid (CA), then self-assemble into rice-like dots in aqueous phase with a high fluorescence quantum yield. Such nitrogen-containing nonconjugated compounds N-PDs are believed to be inherently fluorescent, and the reported reasons for fluorescence-emitting are discussed. Importantly, these N-PDs can be used as an excellent fluorescent probe to detect Cu2+ and ClO- in aqueous solutions. Cu2+ could combine with the PEI moiety of the N-PDs to form a copper amine complex and then quench the fluorescence by an internal filtration effect. ClO- could oxidize the hydroxyl groups on the surface of the N-PDs to form a positive charge, blocking electron transfer between the hydroxyl groups and the chromophore groups. Finally, the sensor was successfully applied to the detection of Cu2+ and ClO- in environmental water samples.
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Affiliation(s)
- Hao Zhang
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
| | - Xuezhe Dong
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
| | - Jiahui Wang
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
| | - Ruifang Guan
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
| | - Duxia Cao
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
| | - Qifeng Chen
- School of Materials Science and Engineering , University of Jinan , Jinan , Shandong 250022 , China
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17
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Thangaraj B, Solomon PR, Ranganathan S. Synthesis of Carbon Quantum Dots with Special Reference to Biomass as a Source - A Review. Curr Pharm Des 2019; 25:1455-1476. [DOI: 10.2174/1381612825666190618154518] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/11/2019] [Indexed: 11/22/2022]
Abstract
Quantum dots (QDs) have received much attention due to their extraordinary optical application in
medical diagnostics, optoelectronics and in energy storage devices. The most conventional QDs are based on
semiconductors that comprise heavy metals whose applications are limited due to toxicity and potential environmental
hazard. Of late, researchers are focusing on carbon-based quantum dots, which have recently emerged as a
new family of zero-dimensional nanostructured materials. They are spherical in shape with a size below 10 nm
and exhibit excitation-wavelength-dependent photoluminescence (PL). Carbon quantum dots (CQDs) have
unique optical, photoluminescence and electrochemical properties. They are environment-friendly with low toxicity
as compared to toxic heavy metal quantum dots. Generally, CQDs are derived from chemical precursor materials,
but recently researchers have focused their attention on the production of CQDs from waste biomass materials
due to the economic and environmental exigency. In this review, recent advances in the synthesis of CQDs
from waste biomass materials, functionalization and modulation of CQDs and their potential application of biosensing
are focused. This review also brings out some challenges and future perspectives for developing smart
biosensing gadgets based on CQDs.
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Affiliation(s)
- Baskar Thangaraj
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang -212013, Zhenjiang, China
| | - Pravin R. Solomon
- School of Chemical & Biotechnology, SASTRA-Deemed University, Thanjavur - 613401, Tamil Nadu, India
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Fluorescent carbon dots functionalization. Adv Colloid Interface Sci 2019; 270:165-190. [PMID: 31265929 DOI: 10.1016/j.cis.2019.06.008] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/18/2019] [Accepted: 06/18/2019] [Indexed: 01/03/2023]
Abstract
Carbon dots (CDs), as a new type of luminescent zero-dimensional carbon nanomaterial, have been applied in a variety of fields. Currently, functionalization of CDs is an extremely useful method for effectively tuning their intrinsic structure and surface state. Heteroatom doping and surface modification are two functionalization strategies for improving the photophysical performance and broadening the range of applications for fluorescent CDs. Heteroatom doping in CDs can be used to tune their intrinsic properties, which has received significant research interests because of its simplicity. Surface modification can be applied for varying active sites and the functional groups on the CDs surface, which can endow fluorescent CDs with the unique properties resulting from functional ligand. In this review, we summarize the structural and physicochemical properties of functional CDs. We focused our review on the latest developments in functionalization strategies for CDs and discuss the detailed characteristics of different functionalization methods. Ultimately, we hope to inform researchers on the latest progress in functionalization of CDs and provide perspectives on future developments for functionalization of CDs and their potential applications.
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Synthesis of molecularly imprinted fluorescent probe based on biomass-derived carbon quantum dots for detection of mesotrione. Anal Bioanal Chem 2019; 411:5519-5530. [PMID: 31147761 DOI: 10.1007/s00216-019-01930-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
A novel fluorescent probe based on molecularly imprinted polymers (MIPs) coupled with carbon quantum dots (CQDs) was fabricated and successfully used for selective recognition of mesotrione. In this probe, the biomass-derived CQDs were prepared through a hydrothermal method using mango peels as carbon source, and the whole synthesis procedure was green without chemical reagents. The CQDs were encapsulated into MIPs by using sol-gel technology. After removal of the template molecule mesotrione, specific binding sites are formed and there is electrostatic attraction between the probe and the template molecule. The synthetic CQDs@MIPs were able to selectively capture the target mesotrione with fluorescence quenching via the specific interaction between mesotrione and the recognition cavities. The probe was used for determination of mesotrione in corn to verify the practicality of the proposed method. The detection limit of mesotrione was 4.7 nmol L-1, and the linear range was 15 nmol L-1 to 3000 nmol L-1. Meanwhile, the recoveries of this method for mesotrione were 91.4-96.2%, and the relative standard deviations (RSDs) were 3.2-6.1%. This work provides a novel research method to synthesize CQDs@MIPs with high selectivity (imprinting factor = 5.6), and which can be used for convenient, rapid recognition and sensitive detection of trace compounds from complex matrices.
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Room temperature preparation of water-soluble polydopamine-polyethyleneimine copolymer dots for selective detection of copper ions. Talanta 2019; 197:584-591. [DOI: 10.1016/j.talanta.2019.01.070] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/17/2019] [Accepted: 01/23/2019] [Indexed: 01/24/2023]
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21
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Amjadi M, Hallaj T, Salari R. A sensitive colorimetric probe for detection of 6-thioguanine based on its protective effect on the silver nanoprisms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:30-35. [PMID: 30428429 DOI: 10.1016/j.saa.2018.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 10/23/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
In this work a non-aggregated colorimetric probe for detection of chemotherapeutic drug, 6-thioguanine (6-TG), is introduced. It is based on the protective effect of 6-TG on silver nanoprisms (AgNPRs) against the iodide-induced etching reaction. Iodide ions can attack the corners of AgNPRs and etch them, leading to the morphological transition from nanoprisms to nanodiscs. As a consequence, the solution color changes from blue to pink. However, in the presence of 6-TG, due to its protective effect on the corners of AgNPRs, I- ions cannot etch the prisms and the blue color of solution remains unchanged. Using this effect, selective sensor was designed for detection of 6-TG in the range of 2.5-500 μg L-1, with a detection limit of 0.95 μg L-1. Since with varying the concentration of 6-TG in this range, the color variation from pink to blue can be easily observed, the designed sensing scheme can be used as a colorimetric probe. The method was used for analysis of human plasma samples.
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Affiliation(s)
- Mohammad Amjadi
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran.
| | - Tooba Hallaj
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran
| | - Rana Salari
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166616471, Iran
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22
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Liu L, Mi Z, Li H, Li C, Hu Q, Feng F. Highly selective and sensitive detection of amaranth by using carbon dots-based nanosensor. RSC Adv 2019; 9:26315-26320. [PMID: 35531017 PMCID: PMC9070404 DOI: 10.1039/c9ra04494a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 08/11/2019] [Indexed: 11/26/2022] Open
Abstract
In this work, a novel fluorescence nanosensor for selective and sensitive determination of amaranth was constructed using carbon dots (C-dots). Water soluble C-dots with strong fluorescence were obtained by a simple microwave-assisted method using urea and glycine as raw materials. It was found that amaranth can efficiently and sensitively quench the C-dots fluorescence by the inner filter effect (IFE) and non-radiative energy transfer (NRET) mechanisms. The fluorescence quenching efficiency (F0/F) was strongly correlated with the concentration of amaranth in the 0.2–30 μM range. The detection limit (LOD) is 0.021 μM. There was no significant change in the fluorescence intensity of C-dots when other potentially interfering substances were present in the system. Our C-dots-based nanosensor was successfully utilized for the analysis of amaranth in drinks and showed rapid, sensitive and accurate responses. It indicates that the novel C-dots-based nanosensor has great potential in amaranth detection for real-life applications. Illustration of the synthesis of C-dots and the determination of amaranth based on the fluorescence quenching of C-dots.![]()
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Affiliation(s)
| | - Zhi Mi
- Shanxi Datong University
- Datong
- PR China
| | - Haihong Li
- School of Chemistry and Materials Science
- Shanxi Normal University
- Linfen 041004
- PR China
| | | | - Qin Hu
- College of Food Science and Engineering
- Yangzhou University
- Yangzhou
- PR China
| | - Feng Feng
- Shanxi Datong University
- Datong
- PR China
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23
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Chan KK, Yap SHK, Yong KT. Biogreen Synthesis of Carbon Dots for Biotechnology and Nanomedicine Applications. NANO-MICRO LETTERS 2018; 10:72. [PMID: 30417004 PMCID: PMC6208800 DOI: 10.1007/s40820-018-0223-3] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/02/2018] [Indexed: 05/14/2023]
Abstract
Over the past decade, carbon dots have ignited a burst of interest in many different fields, including nanomedicine, solar energy, optoelectronics, energy storage, and sensing applications, owing to their excellent photoluminescence properties and the easiness to modify their optical properties through doping and functionalization. In this review, the synthesis, structural and optical properties, as well as photoluminescence mechanisms of carbon dots are first reviewed and summarized. Then, we describe a series of designs for carbon dot-based sensors and the different sensing mechanisms associated with them. Thereafter, we elaborate on recent research advances on carbon dot-based sensors for the selective and sensitive detection of a wide range of analytes, including heavy metals, cations, anions, biomolecules, biomarkers, nitroaromatic explosives, pollutants, vitamins, and drugs. Lastly, we provide a concluding perspective on the overall status, challenges, and future directions for the use of carbon dots in real-life sensing.
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Affiliation(s)
- Kok Ken Chan
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Stephanie Hui Kit Yap
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
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24
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Du Q, Zheng J, Wang J, Yang Y, Liu X. The synthesis of green fluorescent carbon dots for warm white LEDs. RSC Adv 2018; 8:19585-19595. [PMID: 35541015 PMCID: PMC9080646 DOI: 10.1039/c8ra02226g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/23/2018] [Indexed: 12/24/2022] Open
Abstract
Green emissive carbon dots synthesized by solvothermal method is used for warm white light-emitting devices.
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Affiliation(s)
- Qin Du
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- College of Chemistry and Chemical Engineering
| | - Jingxia Zheng
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Junli Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Yongzhen Yang
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- Research Center of Advanced Materials Science and Technology
| | - Xuguang Liu
- Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology)
- Ministry of Education
- Taiyuan 030024
- China
- College of Materials Science and Engineering
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