51
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Jyoti MMS, Rana MR, Ali MH, Tokumoto T. Establishment of a steroid binding assay for membrane progesterone receptor alpha (PAQR7) by using graphene quantum dots (GQDs). Biochem Biophys Res Commun 2022; 592:1-6. [PMID: 35007844 DOI: 10.1016/j.bbrc.2022.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 01/03/2022] [Indexed: 12/17/2022]
Abstract
Currently, semiconductor nanoparticles known as quantum dots (QDs) have attracted interest in various application fields such as those requiring sensing properties, binding assays, and cellular imaging and are the very important in the acceleration of drug discovery due to their unique photophysical properties. Here, we applied graphene quantum dots (GQDs) for the binding assay of membrane progesterone receptor alpha (mPRα), one of the probable membrane receptors that have potential in drug discovery applications. By coupling the amino groups of mPRα with GQDs, we prepared fluorogenic GQD-conjugated mPRα (GQD-mPRα). When mixed with a progesterone-BSA-fluorescein isothiocyanate conjugate (P4-BSA-FITC) to check the ligand receptor binding activity of GQD-mPRα, fluorescence at 520 nm appeared. The fluorescence at 520 nm was reduced by the addition of free progesterone into the reaction mixture. GQD-coupled BSA (GQD-BSA) did not show a reduction in fluorescence at 520 nm. The results demonstrated the formation of a complex of GQD-mPRα and P4-BSA-FITC with ligand receptor binding. We established a ligand binding assay for membrane steroid receptors that is applicable for high-throughput assays.
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Affiliation(s)
- Md Maisum Sarwar Jyoti
- Integrated Bioscience Section, Graduate School of Science and Technology, National University Corporation, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Md Rubel Rana
- Integrated Bioscience Section, Graduate School of Science and Technology, National University Corporation, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Md Hasan Ali
- Integrated Bioscience Section, Graduate School of Science and Technology, National University Corporation, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Toshinobu Tokumoto
- Integrated Bioscience Section, Graduate School of Science and Technology, National University Corporation, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
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52
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Shen J, Xu Y, Wang Z, Chen W, Zhao H, Liu X. Facile and green synthesis of carbon nanodots from environmental pollutants for cell imaging and Fe 3+ detection. NEW J CHEM 2022. [DOI: 10.1039/d2nj02236b] [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
An economical and green approach has been provided to turn environmental pollutants into carbon nanodots for their potential applications in both bioimaging and Fe3+ detection.
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Affiliation(s)
- Jialu Shen
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 730000 Lanzhou, Gansu, China
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002 Yichang, Hubei, China
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China
| | - Yanyi Xu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 730000 Lanzhou, Gansu, China
| | - Zuo Wang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 730000 Lanzhou, Gansu, China
| | - Weifeng Chen
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002 Yichang, Hubei, China
| | - Haiyu Zhao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 730000 Lanzhou, Gansu, China
| | - Xiang Liu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 443002 Yichang, Hubei, China
- Hubei Three Gorges Laboratory, 443007 Yichang, Hubei, China
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53
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Zhou H, Yang C, Liao M, Li M, Diao N, Wu S, Wang J. Exploring the mechanism of CdTe quantum dots as fluorescent probe to detect Hg(II) ion from the perspectives of fluorescence polarization and light scattering. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139415] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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54
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Xie H, Lu Y, You R, Qian W, Lin S. Green synthetic nitrogen-doped graphene quantum dot fluorescent probe for the highly sensitive and selective detection of tetracycline in food samples. RSC Adv 2022; 12:8160-8171. [PMID: 35424738 PMCID: PMC8982401 DOI: 10.1039/d2ra00337f] [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: 01/17/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
Abstract
Tetracycline (TC) is a broad-spectrum antibiotic. When humans consume too much food containing tetracycline residues, it can be a serious health hazard. Therefore, it is essential to develop a strategy to detect TC. In this study, we prepared light blue-green luminescent nitrogen-doped graphene quantum dots (N-GQDs) by a hydrothermal method using the natural products potato straight-chain starch and urea as precursors; the fluorescence quantum yield of the prepared N-GQDs was 5.2%. We investigated the detection of tetracycline (TC) by this N-GQD fluorescent sensor based on the internal filtration effect (IFE) of TC on N-GQDs. The reaction is green, simple and no other contaminating products are present. A good linear relationship was established between the relative fluorescence intensity ratio of the system and the logarithm of the TC concentration of 2.5 × 10−10 to 5 × 10−6 M (R2 = 0.9930), with a detection limit of 9.735 × 10−13 M. The method has been used to analyze TC in three real food samples (whole milk, skim milk, honey) with low detection limits (3.750 × 10−11 to 2.075 × 10−9 M), wide linear range, and satisfactory recoveries of 93.80–109.20% were obtained. In conclusion, the proposed method is a green, rapid, highly sensitive and selective method for the detection of tetracycline in real food samples, demonstrating the potential application of N-GQDs in food detection. Tetracycline (TC) is a broad-spectrum antibiotic.![]()
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Affiliation(s)
- Huanyu Xie
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China
| | - Yudong Lu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China
| | - Ruiyun You
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Oriented Chemical Engineer, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, Fujian, 350007, China
| | - Wei Qian
- Research Centre of Wetlands in Subtropical Region, School of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian, 350007, China
| | - Shan Lin
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, East China University of Technology, Nanchang, Jiangxi, 330013, China
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55
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Zhang C, Pan G, He Y. Conjugated microporous organic polymer as fluorescent chemosensor for detection of Fe 3+ and Fe 2+ ions with high selectivity and sensitivity. Talanta 2022; 236:122872. [PMID: 34635253 DOI: 10.1016/j.talanta.2021.122872] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/03/2021] [Accepted: 09/09/2021] [Indexed: 11/19/2022]
Abstract
A conjugated microporous organic polymer (TPA-Bp) comprised of triphenylamine (TPA) and 2,2'-bipyridine-5,5'-diformaldehyde (Bp) was prepared via the Schiff-base reaction under ambient conditions. TPA-Bp is an amorphous and microporous spherical nanoparticle with very high stability. TPA-Bp suspension in DMF displayed strong fluorescence emission and selective fluorescence quenching response towards Fe3+ and Fe2+ ions. The fluorescence intensity of TPA-Bp at 331 nm presents linear relationship with the concentrations of both Fe3+ and Fe2+ with low detection limits of 1.02 × 10-5 M for Fe3+ and 5.37 × 10-6 M for Fe2+. The results of X-ray photoelectron spectroscopy (XPS) and Fourier Transform infrared spectroscopy (FTIR) confirm the selective coordination of N atoms of pyridine unit with Fe ions. The fluorescence quenching of TPA-Bp upon the addition of Fe3+/Fe2+ ions can be attributed to the absorption competition quenching (ACQ) mechanism and the energy transfer between TPA-Bp and Fe3+/Fe2+ ions. This work demonstrates that the conjugated microporous polymers are promising candidates as luminescent sensor for detection of the special analytes in practical applications.
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Affiliation(s)
- Chao Zhang
- College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Guanjun Pan
- College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Yi He
- College of Chemistry, Jilin University, Changchun, 130012, PR China.
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56
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Li N, Shi L, Zou X, Wang T, Wang D, Gong Z, Fan M. Fluorescence immunoassay rapid detection of 2019-nCoV antibody based on the fluorescence resonance energy transfer between graphene quantum dots and Ag@Au nanoparticle. Microchem J 2021; 173:107046. [PMID: 34866656 PMCID: PMC8632743 DOI: 10.1016/j.microc.2021.107046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/25/2021] [Accepted: 11/26/2021] [Indexed: 12/28/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has dramatically changed the world, is a highly contagious virus. The timely and accurate diagnosis of SARS-CoV-2 infections is vital for disease control and prevention. Here in this work, a fluorescence immunoassay was developed to detect 2019 Novel Coronavirus antibodies (2019-nCoV mAb). Fluorescent graphene quantum dots (GQDs) and Ag@Au nanoparticles (Ag@AuNPs) were successfully synthesized and characterized. Fluorescence resonance energy transfer (FRET) enables effective quenching of GQDs fluorescence by Ag@AuNPs. With the presence of 2019-nCoV mAb, a steric hindrance was observed between the Ag@AuNPs-NCP (2019-nCoV antigen) complex and GQDs, which reduced the FRET efficiency and restored the fluorescence of GQDs. The fluorescence enhancement efficiency has a satisfactory linear relationship with the logarithm of the 2019-nCoV mAb in a concentration range of 0.1 pg mL−1–10 ng mL−1, and the limit of detection was 50 fg mL−1. The method has good selectivity. When the serum sample was spiked with 2019-nCoV mAb, the recovery rate was between 90.8% and 103.3%. The fluorescence immunosensor demonstrates the potential to complement the existing serological assays for COVID-19 diagnosis.
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Affiliation(s)
- Nan Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Linhong Shi
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Xue Zou
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Tengfei Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.,State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 611756, China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.,State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 611756, China
| | - Meikun Fan
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China.,State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 611756, China
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57
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Zhao D, Huang Y, Ouyang H, Shi B, Li S, Chen S, Zhao S. Facile preparation of Cu-doped carbon dots for naked-eye discrimination of phenylenediamine isomers and highly sensitive ratiometric fluorescent detection of H 2O 2. Talanta 2021; 239:123110. [PMID: 34864533 DOI: 10.1016/j.talanta.2021.123110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 11/30/2022]
Abstract
Changing a detection analyte into a colored material is a key challenge for visual discrimination of isomers. In this work, a novel fluorescent probe incorporating Cu-doped carbon dots (Cu-CDs), for the first time, was developed for naked-eye discrimination of phenylenediamine isomers and highly sensitive ratiometric fluorescence detection of H2O2. In this strategy, Cu-CDs were synthesized by a facile hydrothermal approach using citric acid, formamide, and CuCl2 as reactants. The prepared Cu-CDs exhibited outstanding peroxidase-like activity and stability. Consequently, a chemosensor platform based on Cu-CDs was constructed to enable naked-eye discrimination of phenylenediamine isomers through the H2O2-mediated oxidation reaction. Moreover, a Cu-CDs-based ratiometric fluorescence sensor was proposed as a means to sensitively detect H2O2 with a detection limit of 5.0 nM. The sensor was further employed for monitoring H2O2 in human serum, indicating its potential applications in other biologically related study.
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Affiliation(s)
- Dandan Zhao
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China
| | - Yijun Huang
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China
| | - Huixiang Ouyang
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China
| | - Bingfang Shi
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China.
| | - Suping Li
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China
| | - Shengyu Chen
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environmental Engineering, Baise University, Guangxi, Baise, 533000, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, Guangxi, Guilin, 541004, China.
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58
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Sulfur quantum dots: A novel fluorescent probe for sensitive and selective detection of Fe3+ and phytic acid. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106656] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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59
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Cheng R, Xiang Y, Guo R, Li L, Zou G, Fu C, Hou H, Ji X. Structure and Interface Modification of Carbon Dots for Electrochemical Energy Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102091. [PMID: 34318998 DOI: 10.1002/smll.202102091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 05/15/2023]
Abstract
Carbon dots (CDs) as new nanomaterials have attracted much attention in recent years due to their unique characteristics. Notably, structure and interface modification (carbon core, edge, defects, and functional groups) of CDs have been considered as valid methods to regulate their properties, which contain electron transfer effect, electrochemical activity, fluorescence luminescent, and so on. Additionally, CDs with ultrasmall size, excellent dispersibility, high specific surface area, and abundant functional groups can guarantee positive and extraordinary effects in electrical energy storage and conversion. Therefore, CDs are used to couple with other materials by constructing a special interface structure to enhance their properties. Here, diverse structural and interfacial modifications of CDs with various heteroatoms and synergy effects are systematically analyzed. And not only several main syntheses of CDs-based composites (CDs/X) are summarized but also the merit and demerit of CDs/X in electrical energy storage are discussed. Finally, the applications of CDs/X in energy storage devices (supercapacitors, batteries) and electrocatalysts for practical applications are discussed. This review mainly provides a comprehensive summary and future prospect for synthesis, modification, and electrochemical applications of CDs.
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Affiliation(s)
- Ruiqi Cheng
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yinger Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Ruiting Guo
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Lin Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Guoqiang Zou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Chaopeng Fu
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hongshuai Hou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Xiaobo Ji
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
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60
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Zhang D, Chao D, Yu C, Zhu Q, Zhou S, Tian L, Zhou L. One-Step Green Solvothermal Synthesis of Full-Color Carbon Quantum Dots Based on a Doping Strategy. J Phys Chem Lett 2021; 12:8939-8946. [PMID: 34499514 DOI: 10.1021/acs.jpclett.1c02475] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Proposing a simple strategy for developing full-color carbon quantum dots (CQDs) and exploring how the luminescence can be tuned and improved is attractive and encouraging. Herein, blue, green, yellow-green, and orange-red CQDs doped with heteroatoms were synthesized in one pot and separated by column chromatography, with emission peaks of 435 nm, 495 nm [photoluminescence quantum yield (PLQY) of 88.9%], 525 nm, and 595 nm (full width at half-maximum of 31 nm), respectively. The abundant C-O/C-O-C electron donor groups greatly improve the PLQY of green CQDs, and the expended effective conjugated domains (particle size, doped chlorine, and conjugated nitrogen) of CQDs boost the red-shifts of emission spectra. Energy transfer (ET) in a concentrated mixed solution of CQDs was discovered, and possible ET mechanisms are proposed. Furthermore, a high-efficiency white light-emitting diode with Commission Internationale de L'Eclairage coordinates of (0.361, 0.369), a correlated color temperature of 4534 K, and a high color rendering index of 90.8 was fabricated.
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Affiliation(s)
- Danyang Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- University of Science and Technology of China, Hefei 230027, People's Republic of China
| | - Daiyong Chao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Chunyu Yu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Qi Zhu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Shihong Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Long Tian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- University of Science and Technology of China, Hefei 230027, People's Republic of China
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61
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Zeng L, Li Z, Zhou H, Zeng J, Yuan Z, Chen Z, Tang J. Fabrication of two-phase Ca 2+-doped LaVO 4:Eu 3+ structures: morphology modification, tunable optical performance and detection of Fe 3+ ions with high sensitivity. Dalton Trans 2021; 50:11804-11813. [PMID: 34369502 DOI: 10.1039/d1dt02058g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Two-phase Ca2+-doped LaVO4:Eu3+ nanocrystals were prepared through a hydrothermal method with the help of SOD CITR and EDTA surfactants. The phase and morphology of the products were characterized by XRD and TEM, and the fluorescence performances were also recorded. The results indicated that Ca2+ ions were doped into the LaVO4:Eu3+ host lattice, impeding the aggregation of the nanocrystals and enhancing the luminescence intensity. The morphology transformation process and luminescence enhancement were systematacially investigated. The fluorescence intensity of the two selected samples could be completely quenched by Fe3+ ions without the disturbance of other ions, with the mechanism being due to the adsorption of Fe3+ ions onto the grains and a subsequent energy transfer from Eu3+ to Fe3+. Therefore, the present two Ca2+-doped LaVO4:Eu3+ samples can be applied as appropriate candidates for detecting Fe3+ ions with agility and sensitivity in aqueous solution.
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Affiliation(s)
- Lingwei Zeng
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
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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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63
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Sohal N, Maity B, Basu S. Recent advances in heteroatom-doped graphene quantum dots for sensing applications. RSC Adv 2021; 11:25586-25615. [PMID: 35478909 PMCID: PMC9037181 DOI: 10.1039/d1ra04248c] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/19/2021] [Indexed: 12/16/2022] Open
Abstract
Graphene quantum dots (GQDs) are carbon-based fluorescent nanomaterials having various applications due to attractive properties. But the low photoluminescence (PL) yield and monochromatic PL behavior of GQDs put limitations on their real-time applications. Therefore, heteroatom doping of GQDs is recognized as the best approach to modify the optical as well as electronic properties of GQDs by modifying their chemical composition and electronic structure. In this review, the new strategies for preparing the heteroatom (N, B, S, P) doped GQDs by using different precursors and methods are discussed in detail. The particle size, emission wavelength, PL emissive color, and quantum yield of recently developed heteroatom doped GQDs are reported in this article. The investigation of structure, crystalline nature, and composition of heteroatom doped GQDs by various characterization techniques such as high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) are also described. The recent progress on the impact of mono or co-doping of heteroatoms on PL behavior, and optical, electrochemiluminescence (ECL), and electrochemical properties of GQDs is also surveyed. Further, heteroatom doped GQDs with attractive properties used in sensing of various metal ions, biomolecules, small organic molecules, etc. by using various techniques with different limits of detection are also summarized. This review provides progressive trends in the development of heteroatom doped GQDs and their various applications.
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Affiliation(s)
- Neeraj Sohal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology Patiala 147004 India
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64
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Zhu Z, Li X, Luo M, Chen M, Chen W, Yang P, Zhou X. Synthesis of carbon dots with high photocatalytic reactivity by tailoring heteroatom doping. J Colloid Interface Sci 2021; 605:330-341. [PMID: 34329982 DOI: 10.1016/j.jcis.2021.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 02/07/2023]
Abstract
The photocatalytic degradation of organic pollutant by carbon-based materials is still a challenge. Herein, xylose-derived carbon dots (X-CDs) and chitosan-derived CDs (C-CDs) were synthesized by heteroatoms-doping strategy. Although there is almost no difference in fluorescence emission behaviors, the two types of CDs demonstrated different advantages in photocatalysis and peroxymonosulfate (PMS) activation. Comparative research revealed that the X-CDs with doping of heteroatom S was superior in the separation of electron-hole pairs, resulting in a higher catalytic performance, while the S, N co-doped C-CDs can only exhibit high photocatalytic reactivity when they were coupled with PMS. The underlying reason is that the N-related functional groups with strong electron-donating property weakened the electron-trapping capacity of S-related energy level, but surface state resulting from this doping structures were conducive to promoting photo-generated electron transfer from C-CDs to PMS and played the primary role in organic oxidation. Thanks to the doping effect, both the X-CDs and C-CDs/PMS system displayed high photocatalytic performance for methylene blue removal under sunlight irradiation, showing almost 100% degradation efficiency in a 30 min period. The present study provides a valuable insight for the synthesis of CDs-based catalysts but also establishes a very promising catalytic oxidation system.
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Affiliation(s)
- Ziqi Zhu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Xinghui Li
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Min Luo
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Minzhi Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Weimin Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China
| | - Pei Yang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China.
| | - Xiaoyan Zhou
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Fast-growing Tree & Agro-fibre Materials Engineering Center, Nanjing 210037, China.
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65
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Long C, Li X, Jiang Z, Zhang P, Qing Z, Qing T, Feng B. Adsorption-improved MoSe 2 nanosheet by heteroatom doping and its application for simultaneous detection and removal of mercury (II). JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125470. [PMID: 33930977 DOI: 10.1016/j.jhazmat.2021.125470] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/02/2021] [Accepted: 02/17/2021] [Indexed: 06/12/2023]
Abstract
Water pollution arising from heavy metal ions continues to be a major environmental problem, which represents a serious threat to human beings and animals worldwide. New materials that can simultaneously detect and remove these toxic ions are urgently required. Herein, nitrogen and sulfur co-doped molybdenum selenide nanosheets (N, S-MoSe2) were prepared and found to be fluorescently responsive to mercury (II) with an improved adsorption capacity (208.33 mg g-1), thereby providing the possibility for the simultaneous detection and removal of mercury (II) in water samples. The great affinity was the result of the complexation of mercury (II) with Se and S atoms in N, S-MoSe2 as well as the electrostatic adsorption of cation mercury (II) on negatively charged N, S-MoSe2. Besides good sensitivity and selectivity toward mercury (II), N, S-MoSe2 displayed a relatively consistent performance under a wide pH range from 3 to 10. The removal efficiency reached 87.5% with fast adsorption kinetics, and N, S-MoSe2 could be reused after simple treatment. Thus, this work is expected to provide new material for the detection and removal of mercury (II) in an aqueous solution and offer an insight into the interaction between heavy metal ions and inorganic nanomaterials.
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Affiliation(s)
- Caicheng Long
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Xiao Li
- College of Chemistry, Nankai University, Tianjin 300110, China
| | - Zixin Jiang
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Peng Zhang
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Zhihe Qing
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China
| | - Taiping Qing
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Bo Feng
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China.
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66
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Nannuri SH, Nikam AN, Pandey A, Mutalik S, George SD. Subcellular imaging and diagnosis of cancer using engineered nanoparticles. Curr Pharm Des 2021; 28:690-710. [PMID: 34036909 DOI: 10.2174/1381612827666210525154131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/13/2021] [Indexed: 11/22/2022]
Abstract
The advances in the synthesis of nanoparticles with engineered properties are reported to have profound applications in oncological disease detection via optical and multimodal imaging and therapy. Among various nanoparticle-assisted imaging techniques, engineered fluorescent nanoparticles show great promise from high contrast images and localized therapeutic applications. Of all the fluorescent nanoparticles available, the gold nanoparticles, carbon dots, and upconversion nanoparticles are emerging recently as the most promising candidates for diagnosis, treatment, and cancer monitoring. This review addresses the recent progress in engineering the properties of these emerging nanoparticles and their application for cancer diagnosis and therapy. In addition, the potential of these particles for subcellular imaging is also reviewed here.
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Affiliation(s)
- Shivanand H Nannuri
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ajinkya N Nikam
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Abhijeet Pandey
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Sajan D George
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
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67
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Biocompatible sulfur nitrogen co-doped carbon quantum dots for highly sensitive and selective detection of dopamine. Colloids Surf B Biointerfaces 2021; 205:111874. [PMID: 34044332 DOI: 10.1016/j.colsurfb.2021.111874] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/12/2021] [Accepted: 05/11/2021] [Indexed: 12/27/2022]
Abstract
In this work, sulfur and nitrogen co-doped carbon quantum dots (S,N-CQDs) were prepared via one-pot hydrothermal treatment of EDTA disodium and sodium sulfide. The prepared S,N-CQDs were characterized by TEM, XRD, FT-IR, XPS, UV-vis absorption and fluorescence spectra to characterize their morphology, crystal structure, functional groups, elemental composition, and optical properties. It was found that S and N elements were successfully doped into the CQDs and the morphology was approximately spherical with an average particle size of 2.16 nm, in which the excitation/emission wavelengths were 350 and 420 nm, respectively. Compared with single element doped CQDs, double element doped CQDs have a higher quantum yield and excellent optical stability. Cell experiments showed that S,N-CQDs had good biocompatibility because they had no obvious toxicity on both normal cell lines and cancer cell lines. More importantly, based on the synergy of static quenching and dynamic quenching, the S,N-CQDs were used as effective fluorescent probes for sensitive detection of DA, with high anti-interference and low limit of detection. Based on the good biocompatibility of S,N-CQDs, the detection of dopamine in actual serum samples were carried out and the results showed an excellent recovery rate. Therefore, this work provides a dopamine sensor with a practical application prospect.
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68
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Zhou C, Zou H, Sun C, Li Y. Recent advances in biosensors for antibiotic detection: Selectivity and signal amplification with nanomaterials. Food Chem 2021; 361:130109. [PMID: 34029899 DOI: 10.1016/j.foodchem.2021.130109] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/19/2021] [Accepted: 05/12/2021] [Indexed: 12/19/2022]
Abstract
Antibiotics are widely used in the prevention and treatment of infectious diseases in animals due to its bactericidal or bacteriostatic action. Residual antibiotics and their metabolites pose great threats to human and animal health, such as potential carcinogenic and mutagenic effects, and bacterial resistances. Therefore, it is necessary and urgent to accurately monitor trace amounts of antibiotics in food samples. Up to now, many analytical methods have been reported for the determination of antibiotics. Biosensors with the advantages of high sensitivity, rapid response, easy miniaturization, and low price have been widely applied to the detection of antibiotics residues in past decades. This review offered an in-depth evaluation of recognition elements for antibiotic residues in diverse food matrices. In addition, it presented a systematical and critical review on signal amplification via various materials, focusing on recently developed nanomaterials. Finally, the review provided an outlook on the future concepts to help upgrade the sensing techniques for antibiotics in food.
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Affiliation(s)
- Chen Zhou
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Haimin Zou
- Department of Clinical Laboratory, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610041, China
| | - Chengjun Sun
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China; Provincial Key Laboratory for Food Safety Monitoring and Risk Assessment of Sichuan, Chengdu 610041, China
| | - Yongxin Li
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China; Provincial Key Laboratory for Food Safety Monitoring and Risk Assessment of Sichuan, Chengdu 610041, China.
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69
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Xu S, Tan L, Liu F, Cui Y, Wang C, Zhang R. Investigation of optical properties for N- and F-doped triangular shaped carbon molecules. J Mol Model 2021; 27:154. [PMID: 33954863 DOI: 10.1007/s00894-021-04758-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/18/2021] [Indexed: 10/21/2022]
Abstract
Optical properties of N- and F-doping triangular-shaped carbon molecules have been investigated in theory and experiment. The theoretical results showed that carbon molecules with impurity F and Cl have the same characters with pure carbon. Doping N into pure carbon molecule would change the optical rotation at 589 nm. For doping N replacing hydrogen atom structures (N-doping 1 and N-doping 2 molecules), the absorption spectra of them are similar to pure carbon molecule. However, for molecules with impurity N atom in benzene ring (N-doping 3 and N-doping 4 molecules), the peaks of wavelength of absorption spectra shift to long wavelength compared to that of pure carbon molecule. Moreover, the delocalization of molecular orbital (MO) is different from pure carbon molecule, which is caused by the impurity N changing the electrons distribution of benzene ring. We have calculated 3 without H and 4 without H molecules which are removing hydrogen atom in nitrogen atom from N-doping 3 and 4. 3 without H and 4 without H molecules have similar optical properties with pure carbon molecule. The results testified that the impurity N and F would not change the optical properties of carbon molecule if impurity did not change the delocalization of all benzene rings. Optical properties of nitrogen- and fluorine-doping carbon molecules investigating in theory and experiment.
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Affiliation(s)
- Shuhong Xu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Linfeng Tan
- Chien-Shiung Wu College, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Fan Liu
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Yiping Cui
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Chunlei Wang
- Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, Jiangsu, China.
| | - Rong Zhang
- Department of Obstetrics and Gynecology, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, China.
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70
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Xu S, Tan L, Liu F, Cui Y, Shao H, Wang C, Zhang R. Influence of ligand and impurities on optical properties of carbon dots: Narrow linewidth and controllable UV-Vis spectrum. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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71
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Pitch-derived carbon quantum dots as fluorescent probe for selective and sensitive detection of ferric ions and bioimaging. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113253] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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72
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Wu H, Xu H, Shi Y, Yuan T, Meng T, Zhang Y, Xie W, Li X, Li Y, Fan L. Recent Advance in Carbon Dots: From Properties to Applications. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000609] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hao Wu
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Huimin Xu
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Yuxin Shi
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Ting Yuan
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Ting Meng
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Yang Zhang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Wenjing Xie
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Xiaohong Li
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Yunchao Li
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
| | - Louzhen Fan
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education, Beijing Normal University Beijing 100875 China
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73
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Wu D, Qu C, Wang J, Yang R, Qu L. Highly sensitive and selective fluorescence sensing and imaging of Fe 3+ based on a novel nitrogen-doped graphene quantum dots. LUMINESCENCE 2021; 36:1592-1599. [PMID: 33900668 DOI: 10.1002/bio.4062] [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: 02/28/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 11/10/2022]
Abstract
A novel nitrogen-doped graphene quantum dots (N-GQDs) with a green fluorescence emission was synthesized through microwave method using citric acid and semicarbazide hydrochloride as reactants. The as-synthesized N-GQDs exhibited good stability, excellent water solubility, and negligible cytotoxicity. Due to intermolecular charge transfer, ferric ion (Fe3+ ) has a strong quenching effect on the N-GQDs. Fluorescence quenching has a linear relationship with the Fe3+ concentration in the range 0.02-12 μM. The detection limit was 1.43 nM. What is more, it is worth mentioning that the obtained N-GQDs showed high selectivity and sensitivity towards Fe3+ . Under the optimum conditions, the addition of 10-fold copper ions and 100-fold other metal ions had no influence on the detection of Fe3+ (0.8 μM), which indicated a higher sensitivity compared with that of the reported methods. Due to their excellent properties, the obtained N-GQDs was successfully applied for sensing and imaging Fe3+ in water samples and HeLa cells.
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Affiliation(s)
- Dongming Wu
- Green Catalysis Center of Zhengzhou University, College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou, China
| | - Chaojie Qu
- Green Catalysis Center of Zhengzhou University, College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou, China
| | - Jizhong Wang
- Ministry of Agriculture and Rural Affairs, Hunan Division GRG Metrol & Test, Key Laboratory Southern Farmland Pollution Prevention & Control, Changsha, Hunan, China
| | - Ran Yang
- Green Catalysis Center of Zhengzhou University, College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou, China
| | - Lingbo Qu
- Green Catalysis Center of Zhengzhou University, College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou Key Laboratory of Functional Nanomaterial and Medical Theranostic, Zhengzhou University, Zhengzhou, China
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74
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Supjaroenpisan M, Hanchaina R, Kangsamaksin T, Paoprasert P. Effects of Heteroatom Doping of Carbon Dots from Sugar on Optical Properties, Phenolic Content, Antioxidant Activity, Photostability, and Cytotoxicity. ChemistrySelect 2021. [DOI: 10.1002/slct.202100495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Monthakarn Supjaroenpisan
- Department of Chemistry, Faculty of Science and Technology Thammasat University, Pathumthani 12120 Thailand
| | | | - Thaned Kangsamaksin
- Department of Biochemistry Faculty of Science Mahidol University Bangkok 10400 Thailand
| | - Peerasak Paoprasert
- Department of Chemistry, Faculty of Science and Technology Thammasat University, Pathumthani 12120 Thailand
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75
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Cai H, Xu H, Chu H, Li J, Zhang D. Fabrication of multi-functional carbon dots based on "one stone, three birds" strategy and their applications for the dual-mode Fe 3+ detection, effective promotion on cell proliferation and treatment on ferric toxicosis in vitro. J Mater Chem B 2021; 9:767-782. [PMID: 33326551 DOI: 10.1039/d0tb02325f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ingenious design of multi-functional materials to simultaneously achieve the accurate detection of targets and effective treatment of target-related diseases is of great significance for both practical and clinical applications. Accordingly, based on their advantages of facile synthesis and function designability, functional nanomaterials have become promising candidates for integrating multi-functionality into one platform, especially carbon dot (CD)-based materials. Herein, deferoxamine (DFO)-inspired CDs with integrated "sense and treatment" potential were elaborately designed and fabricated via a one-pot hydrothermal synthesis by employing l-aspartic acid (Asp) and 2,5-diaminobenzenesulfonic acid (DABSA) as the reactants. A series of characterization results distinctly confirmed that the synthesized CDs possessed a unique chemical composition, uniform spherical morphology (diameter of around 5 nm) and good dispersibility in aqueous solution, exhibiting excellent fluorescence stability under different conditions. Owing to the complexation interaction between Fe3+ and the functional groups of CDs, the selective and sensitive detection of Fe3+ could be successfully realized through fluorescent and colorimetric dual-mode detection based on the statistic quenching in the initial stage, and subsequently the FRET process. Furthermore, these CDs could be utilized for cellular imaging and effective Fe3+ detection due to their outstanding biocompatibility and cytoplasmatic distribution. More significantly, these DFO-inspired CDs could remarkably promote the proliferation of various mammalian cells. Particularly, the results in this work obviously indicated that this type of CDs could weaken the damage of Fe3+ towards the physiological behaviors of cells, helping the cells to regain their capability of differentiation after ferric toxicosis. Therefore, this work presents an original approach for the design and fabrication of multi-functional materials according to the "one stone, three birds" strategy, which may be an optional solution to develop various multi-functional platforms for disease diagnosis and corresponding clinical treatment.
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Affiliation(s)
- Huijuan Cai
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, P. R. China.
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76
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Ye HL, Shang Y, Wang HY, Ma YL, He XW, Li WY, Li YH, Zhang YK. Determination of Fe(Ⅲ) ion and cellular bioimaging based on a novel photoluminescent silicon nanoparticles. Talanta 2021; 230:122294. [PMID: 33934766 DOI: 10.1016/j.talanta.2021.122294] [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: 12/13/2020] [Revised: 02/24/2021] [Accepted: 03/07/2021] [Indexed: 01/09/2023]
Abstract
The determination approaches of Fe (Ⅲ) in biological samples were developed by a novel water-soluble silicon nanoparticles (SiNPs). The SiNPs were synthesized by a facile microwave-assisted method, and simultaneously featured strong blue fluorescence (photoluminescence quantum yield: 25.2%), long lifetime (~13.29 ns) and good photo-stability. The fluorescence intensities of SiNPs were gradually quenched with Fe (Ⅲ) concentration increasing from 2.0 to 50 μmol/L. The detection limit of the established method was 0.56 μmol/L and the precision for eleven replicate detections of 20 μmol/L Fe (Ⅲ) was 3.2% (relative standard deviation, RSD). The spiked recoveries were 99.0%-104.5%. Results of the lifetime decay and cyclic voltammetry (CV) evidenced that the electron transfer was responsible for the fluorescence quenching mechanism of SiNPs and Fe (Ⅲ). Moreover, the SiNPs were successfully applied in the determination of Fe(Ⅲ) in different environmental waters and human serum. Finally, the resulting SiNPs exhibited the green fluorescence in HeLa cells as the optical probe.
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Affiliation(s)
- Hong-Li Ye
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China
| | - Yue Shang
- Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine, Tianjin, 300071, China
| | - Hai-Yan Wang
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China
| | - Yan-Li Ma
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China
| | - Xi-Wen He
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China
| | - Wen-You Li
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China.
| | - Yu-Hao Li
- Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine, Tianjin, 300071, China.
| | - Yu-Kui Zhang
- College of Chemistry, Research Center for Analytical Sciences, State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Nankai University, Tianjin, 300071, China; National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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77
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Wang S, Yu J, Zhao P, Guo S, Han S. One-Step Synthesis of Water-Soluble CdS Quantum Dots for Silver-Ion Detection. ACS OMEGA 2021; 6:7139-7146. [PMID: 33748627 PMCID: PMC7970548 DOI: 10.1021/acsomega.1c00162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/23/2021] [Indexed: 05/05/2023]
Abstract
To realize fast synthesis of cadmium sulfide (CdS) quantum dots with a low-toxic material, a one-step synthesis method is investigated and conducted. Potato extract is used as a stabilizer and modifier, by which aqueous CdS quantum dots can be prepared at a lower temperature with a shorter time. Through systematic characterization and analysis, a green and fast synthesis mechanism is demonstrated in detail. And the nanoscale CdS quantum dots are uniform in size and dispersity. With low cost and high sensitivity, the prepared CdS quantum dots show promising application in silver-ion detection. This method shows great significance for an environmentally friendly and facile synthesis of CdS quantum dots.
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Affiliation(s)
- Shen Wang
- College
of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Jie Yu
- College
of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Pingnan Zhao
- College
of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Siyao Guo
- School
of Civil Engineering, Qingdao University
of Technology, Qingdao 266033, China
| | - Song Han
- College
of Forestry, Northeast Forestry University, Harbin 150040, China
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78
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Liu P, Meng H, Han Q, Zhang G, Wang C, Song L, Fu Y. Determination of ascorbic acid using electrochemiluminescence sensor based on nitrogen and sulfur doping graphene quantum dots with luminol as internal standard. Mikrochim Acta 2021; 188:120. [PMID: 33694007 DOI: 10.1007/s00604-021-04761-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 02/16/2021] [Indexed: 12/13/2022]
Abstract
A novel internal standard electrochemiluminescence (ECL) sensor has been designed for the detection of ascorbic acid (AA). The adopted dual-emission luminophore (NSGQDs-PEI-luminol-Pt) is composed of nitrogen and sulfur double-doped graphene quantum dots (NSGQDs, as the main luminophore), luminol (as the auxiliary luminophore and internal standard), platinum nanoparticles (Pt NPs, as the co-reaction accelerator), and polyetherimide (PEI, as the linker of NSGQDs and luminol). The results suggest obviously enhanced ECL intensities by the Förster resonance energy transfer (FRET) between luminol (donor) and NSGQDs (acceptor). In this sensing system, the cathodic ECL intensities of NSGQDs (ECL-1, -1.8 V vs. Ag/AgCl) gradually decrease with increasing concentration of AA, while the anodic ECL intensities of luminol (ECL-2, 0.3 V vs. Ag/AgCl) almost remain essentially constant at a potential window from -2.0 to 0.4 V. The natural logarithm of the ratio between ECL-1 and ECL-2 (ln I (ECL-1/ECL-2)) shows a good linear relationship with AA concentration ranging from 10 to 360 nM. The regression equation is ln I (ECL-1/ECL-2) = - 0.0059 cAA + 3.55 (R2 = 0.992) with a limit of detection of 3.3 nM. Such sensor has also been applied for monitoring AA in human serum. The recovery range was 96.5-105.3% and the relative standard deviation was 1.3-3.3%.
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Affiliation(s)
- Pingkun Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Hui Meng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Qian Han
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Gui Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Cun Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Li Song
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yingzi Fu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
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79
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Badekar PS, Thakur GCN, Varma ME, Ghatpande NS, Kulkarni PP, Kumbhar AA. Rhodamine‐Based Fluorescence ‘Turn‐On’ Chemosensor: Detection of Fe
3+
Ion in Aqueous Medium and MCF‐7 Live Cells. ChemistrySelect 2021. [DOI: 10.1002/slct.202004640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pooja S. Badekar
- Department of Chemistry Savitribai Phule Pune University Ganeshkhind Road Pune 411007 India
| | - Garima C. N. Thakur
- Department of Chemistry Savitribai Phule Pune University Ganeshkhind Road Pune 411007 India
| | - Mokshada E. Varma
- Bioprospecting Group Agharkar Research Institute Gopal Ganesh Agarkar Road Pune 411004 India
| | - Niraj S. Ghatpande
- Bioprospecting Group Agharkar Research Institute Gopal Ganesh Agarkar Road Pune 411004 India
| | - Prasad P. Kulkarni
- Bioprospecting Group Agharkar Research Institute Gopal Ganesh Agarkar Road Pune 411004 India
| | - Anupa A. Kumbhar
- Department of Chemistry Savitribai Phule Pune University Ganeshkhind Road Pune 411007 India
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80
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Chen S, Chen C, Wang J, Luo F, Guo L, Qiu B, Lin Z. A Bright Nitrogen-doped-Carbon-Dots based Fluorescent Biosensor for Selective Detection of Copper Ions. JOURNAL OF ANALYSIS AND TESTING 2021. [DOI: 10.1007/s41664-021-00162-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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81
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Qi CX, Xu YB, Li H, Chen XB, Xu L, Liu B. A highly sensitive and selective turn-off fluorescence sensor for Fe3+ detection based on a terbium metal-organic framework. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121835] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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82
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Chen J, Wang Y, Wei X, Liu Z, Xu F, Li H, He X. A novel"turn-off"fluorescence assay based on acid-copper nanoclusters in deep eutectic solvent micelles for co-aggregation inducing fluorescence enhancement and its application. Talanta 2021; 223:121731. [PMID: 33303173 DOI: 10.1016/j.talanta.2020.121731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/29/2020] [Accepted: 10/02/2020] [Indexed: 12/28/2022]
Abstract
As mixtures, deep eutectic solvent (DES) is designability. By adjusting the long alkyl chain hydrogen bond acceptors (HBAs) or hydrogen bond donors (HBDs), the DES displays surfactant characteristics and can form micelles. Hence, a novel, simple, facile and green natural organic acids capped copper nanoclusters (Aci-CuNCs) was synthesized and the spectrum behavior of Aci-CuNCs in DES micelles was researched. It was found that the surfactant-like DES can form micellar co-aggregation with Aci-CuNCs, resulting in the fluorescence (FL) intensive of Aci-CuNCs increase. Corresponding performance of spectral properties of Aci-CuNCs in DES medium were systematically studied by fourier transform infrared spectrometer, 3D FL spectroscopy, FL emission/excitation spectra, ultraviolet absorption spectroscopy. In the mechanism exploration part, on the one hand, the existence of micellar co-aggregation was confirmed by the conductivity, the mass effect of DES, dynamic light scattering and transmission electron microscopy. On the other hand, the influence of different kinds of DESs (types of HBAs/HBDs, molar ratio) and some possible factors (ionic strength and temperature) were discussed in detail to investigate the main driving forces for the formation of micellar co-aggregates. The results of mechanism exploration prove that the long alkyl chain of DES is amphiphilic which can form micellar co-aggregation with Aci-CuNCs through hydrogen bonding. The DES micelle provides Aci-CuNCs with a relatively stable and closed micro-environment which can effectively prevent collisions with water molecules and weakening of fluorescence intensity. On the basic of the above research, a "turn-off" fluorimetric method based on Aci-CuNCs in DES medium was applied for the determination of Fe3+. Under the optimum conditions, the assay worked in the Fe3+ concentration ranges from 1 to -20 μM and had a detection limit of 0.0374 μM. Method validation study illustrates the proposed system can provide a good accuracy, repeatability and stability conditions. Furthermore, the real sample analysis result demonstrates that no obvious matrix effect is found. As a consequence, the FL assays (Aci-CuNCs-based DES) composed of natural organic acid capped CuNCs and green solvent DES provides a simple, gentle and environmentally friendly method for the detection of iron ions.
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Affiliation(s)
- Jing Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China; College of Material and Chemical Engineering, Tongren University, Tongren, 554300, PR China
| | - Yuzhi Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.
| | - Xiaoxiao Wei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Ziwei Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Fangting Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Heqiong Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Xiyan He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
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83
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Nanbedeh S, Faghihi K. Synthesis and Characterization of New Mesoporous Polyurethane-Nitrogen Doped Carbon Dot Nanocomposites: Ultrafast, Highly Selective and Sensitive Turn-off Fluorescent Sensors for Fe 3+ Ions. J Fluoresc 2021; 31:517-539. [PMID: 33452636 DOI: 10.1007/s10895-020-02680-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022]
Abstract
A new fluorescent mesoporous polyurethane (PU) (9) was synthesized by reaction between 2,2'-(methylenebis(4,1-phenylene))bis(5-isocyanatoisoindoline-1,3-dione) (Diisocyanate) (5) and 4,4',4″-((1,3,5-triazine-2,4,6-triyl)tris (azanediyl))triphenol (Triol, TO) (8) (molar ratio 3:2). PU was characterized by using FT-IR, 1H-NMR, XRD, UV-Vis, TGA, Nitrogen adsorption-desorption isotherm, BET, FE-SEM and Photoluminescence (PL) analyses. To the best of our knowledge, this is the first time that a fluorescent polyurethane has been made without the use of commercial fluorescent materials. PU has high fluorescent intensity and it is ultrafast (about few seconds), highly selective and sensitive turn-off fluorescent sensor for Fe3+ ions. This chemosensor exhibited a wide concentration range of (10-250)×10-6 M Fe3+ with quenching efficiency (η) 97.50%. Limit of detection (LOD), limit of quantification (LOQ) and quenching constant (Ksv) values were calculated 10.10×10-6 M, 30.60×10-6 M and 6919.31 M-1, respectively. Nitrogen doped carbon dots (N-doped CDs) as fluorescent nanoparticles and with the aim of improving Fe3+ detecting were synthesized by microwave-assisted and using citric acid monohydrate (10) and ethylenediamine (11) as carbon and nitrogen sources, respectively. Fluorescent nanocomposites (FNCs) were prepared by using casting and in-situ methods. In both methods, two nanocomposites containing 5 and 10%w of N-doped CDs were prepared. FNCs were characterized by using FT-IR, UV-Vis, XRD, TGA, Nitrogen adsorption-desorption isotherm, BET, FE-SEM and PL analyses. All nanocomposites showed better thermal property and sensitivity and lower LOD values in lower concentration of Fe3+ related to PU. Among them, FNC10in exhibited the best results as η, LOD, LOQ, Ksv reached 99.80%, 1.15×10-6 M, 3.48×10-6 M and 53,551.48 M-1, respectively.
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Affiliation(s)
- Saber Nanbedeh
- Department of Chemistry, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran
| | - Khalil Faghihi
- Department of Chemistry, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran.
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84
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Masteri-Farahani M, Ghorbani F, Mosleh N. Boric acid modified S and N co-doped graphene quantum dots as simple and inexpensive turn-on fluorescent nanosensor for quantification of glucose. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118892. [PMID: 32916423 DOI: 10.1016/j.saa.2020.118892] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 08/06/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
A new fluorescent nanosensor based on S and N co-doped graphene quantum dots (S,N-GQDs) modified by boric acid was designed for glucose detection. First, the S,N-GQDs was prepared via one pot hydrothermal process utilizing citric acid and thiourea as precursors. Then, S,N-GQDs was modified by boric acid to fabricate (B)/S,N-GQDs. The excitation dependent photoluminescence spectra of (B)/S,N-GQDs confirmed the heteroatom (S,N) dopant effect on GQDs emission. FT-IR and energy dispersive X-ray (EDX) spectroscopies confirmed the modification of S,N-GQDs with boric acid. The optical and electrochemical band gaps of the obtained (B)/S,N-GQDs were found to be 2.7 and 2.5 eV, respectively. The boric acid functionalized S,N-GQDs exhibited fluorescent enhancement at 455 nm upon addition of glucose. Such fluorescence response was used for glucose quantification with a detection limit of 5.5 μM which is comparable with previous boronic acid based fluorescent sensing systems. However, compared with earlier reported expensive boronic acid based glucose sensors, this modified system is simpler, more economical, and efficient. A mechanism was proposed for fluorescence enhancement based on the reaction of cis-diol units of glucose with the boric acid groups of (B)/S,N-GQDs which creates rigid (B)/S,N-GQDs-glucose structures, restricting the non-radiative intramolecular motions and results in the fluorescent enhancement.
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Affiliation(s)
- Majid Masteri-Farahani
- Faculty of Chemistry, Kharazmi University, Tehran, Iran; Research Institute of Green Chemistry, Kharazmi University, Tehran, Iran.
| | - Fatemeh Ghorbani
- Faculty of Chemistry, Kharazmi University, Tehran, Iran; Research Institute of Green Chemistry, Kharazmi University, Tehran, Iran
| | - Nazanin Mosleh
- Faculty of Chemistry, Kharazmi University, Tehran, Iran; Research Institute of Green Chemistry, Kharazmi University, Tehran, Iran
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85
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Wu H, Su W, Xu H, Zhang Y, Li Y, Li X, Fan L. Applications of carbon dots on tumour theranostics. VIEW 2021. [DOI: 10.1002/viw.20200061] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Hao Wu
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Wen Su
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Huimin Xu
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Yang Zhang
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Yunchao Li
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Xiaohong Li
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
| | - Louzhen Fan
- College of Chemistry Key Laboratory of Theoretical & Computational Photochemistry, and Radiopharmaceuticals, Ministry of Education Beijing Normal University Beijing China
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86
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Gerelkhuu Z, Huy BT, Jung D, Sharipov M, Lee YI. Selective optosensing of iron(III) ions in HeLa cells using NaYF 4:Yb 3+/Tm 3+ upconversion nanoparticles coated with polyepinephrine. Anal Bioanal Chem 2021; 413:1363-1371. [PMID: 33388932 DOI: 10.1007/s00216-020-03099-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/31/2020] [Accepted: 11/26/2020] [Indexed: 11/25/2022]
Abstract
Novel polyepinephrine-modified NaYF4:Yb,Tm upconversion luminescent nanoparticles (UCNP@PEP) were prepared via the self-polymerization of epinephrine on the surfaces of the UCNPs for selective sensing of Fe3+ inside a cell and for intracellular imaging. The proposed UCNP@PEP probe is a strong blue light emitter (λmax = 474 nm) upon exposure to an excitation wavelength of 980 nm. The probe was used for detecting Fe3+ owing to the complexation reaction between UCNP@PEP and Fe3+, resulting in reduced upconversion luminescence (UCL) intensity. The proposed probe has a detection limit of 0.2 μM and a good linear range of 1-10 μM for sensing Fe3+ ions. Moreover, the UCNP@PEP probe displays high cell viability (90%) and is feasible for intracellular imaging. The ability of the probe to sense Fe3+ in a human serum sample was tested and shows promising output for diagnostic purposes. The prepared UCNP@PEP probe was characterized by using UV-visible (UV-Vis) absorption spectrometry, fluorescence (FL) spectrometry, field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR).
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Affiliation(s)
- Zayakhuu Gerelkhuu
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Bui The Huy
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Dasom Jung
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Mirkomil Sharipov
- Department of Chemistry, Changwon National University, Changwon, 51140, Republic of Korea
| | - Yong-Ill Lee
- Ceramics and Biomaterials Research Group, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, 700000, Viet Nam.
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, 700000, Viet Nam.
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87
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Raja D, Sundaramurthy D. Facile synthesis of fluorescent carbon quantum dots from Betel leafs (Piper betle) for Fe3+sensing. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.matpr.2020.03.096] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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88
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Chen S, Huang Y, Yang Y, Luo F, Zhao Q, Chen G. Ultrasensitive Fe 3+ ion detection based on pH-insensitive fluorescent graphene nanosensors in strong acid and neutral media. NEW J CHEM 2021. [DOI: 10.1039/d0nj06201d] [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
Schematic illustration of the preparation of FRGO and the detection of Fe3+ ions in strong acid and neutral media.
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Affiliation(s)
- Songlin Chen
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Yajing Huang
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Yang Yang
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Fanghua Luo
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Qinghua Zhao
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
- Graphene Powder & Composite Research Center of Fujian Province
| | - Guohua Chen
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
- Graphene Powder & Composite Research Center of Fujian Province
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89
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Sohal N, Bhatia SK, Basu S, Maity B. Nanomolar level detection of metal ions by improving the monodispersity and stability of nitrogen-doped graphene quantum dots. NEW J CHEM 2021. [DOI: 10.1039/d1nj04551b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Highly fluorescent and stable nitrogen-doped graphene quantum dots used as nanosensor for the selective and sensitive detection of Fe3+ ions at nanomolar range based on the dynamic quenching.
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Affiliation(s)
- Neeraj Sohal
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Simran Kaur Bhatia
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
| | - Banibrata Maity
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala 147004, India
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90
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Qiu J, Zhong C, Liu M, Yuan Y, Zhu H, Gao Y. Rational design and bioimaging application of water-soluble Fe 3+ fluorescent probes. NEW J CHEM 2021. [DOI: 10.1039/d0nj06253g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The carboxyl group improves the water-solubility of Fe3+ fluorescent probes, while resulting in different performances based on its position.
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Affiliation(s)
- Jianwen Qiu
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350117
- China
| | - Chunli Zhong
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350117
- China
| | - Meng Liu
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350117
- China
| | - Yaofeng Yuan
- Department of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Hu Zhu
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350117
- China
- Engineering Research Center of Industrial Biocatalysis
| | - Yong Gao
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350117
- China
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91
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Li YX, Lee JY, Lee H, Hu CC, Chiu TC. Highly fluorescent nitrogen-doped carbon dots for selective and sensitive detection of Hg2+ and ClO− ions and fluorescent ink. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112931] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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92
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A novel thioctic acid-carbon dots fluorescence sensor for the detection of Hg 2+ and thiophanate methyl via S-Hg affinity. Food Chem 2020; 346:128923. [PMID: 33401087 DOI: 10.1016/j.foodchem.2020.128923] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/20/2020] [Accepted: 12/20/2020] [Indexed: 12/11/2022]
Abstract
Mercury ions and thiophanate methyl (TM), are common contaminants present in the environment and food products. These contaminants cause neurovirulence and carcinogenicity effect on the human body. Herein, thioctic acid-carbon dots (SCDs) was synthesized and applied in a fluorescent "turn-off-on" probe to detect Hg2+ and TM. The presence of other common metal ions and pesticides did not affect the response of the developed sensor. Further investigation revealed that the fluorescent "turn-off-on" model were static, wherein the "turn-off" was induced by an electron transfer effect, while the "turn-on" was caused by the formation of TM-Hg complexes. Under optimal conditions, the fluorescence sensor method exhibited limits of detection as low as 33.3 nmol/L and 7.6 nmol/L for Hg2+ and TM, respectively. The developed sensor was designed to detect Hg2+ and TM in real tap water, grape juice and Citri Reticulatae Pericarpium (CRP) water samples.
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93
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Feng F, Miao C, Zhang Y, Huang Z, Weng S. Positively Charged and
pH
‐sensitive Carbon Dots for Fluorescence Detection of Copper Ion. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Feng Feng
- Department of Pharmacy Fujian Provincial Governmental Hospital, Affiliated Hospital of Fujian Health College Fuzhou 350003 China
| | - Chenfang Miao
- Department of Pharmaceutical Analysis, School of Pharmacy Fujian Medical University Fuzhou 350122 China
| | - Yalan Zhang
- Department of Pharmaceutical Analysis, School of Pharmacy Fujian Medical University Fuzhou 350122 China
- Department of Pharmacy The Second Affiliated Hospital of Fujian Medical University Quanzhou Fujian 362000 China
| | - Zhengjun Huang
- Department of Pharmaceutical Analysis, School of Pharmacy Fujian Medical University Fuzhou 350122 China
| | - Shaohuang Weng
- Department of Pharmaceutical Analysis, School of Pharmacy Fujian Medical University Fuzhou 350122 China
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94
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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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95
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Lee JS, Warkad SD, Shinde PB, Kuwar A, Nimse SB. A highly selective fluorescent probe for nanomolar detection of ferric ions in the living cells and aqueous media. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.09.061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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96
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Man Y, Li Z, Kong WL, Li W, Dong W, Wang Y, Xie F, Zhao D, Qu Q, Zou WS. Starch fermentation wastewater as a precursor to prepare S,N-doped carbon dots for selective Fe(III) detection and carbon microspheres for solution decolorization. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105338] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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97
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Tian L, Chen F, Ding H, Li X, Li X. The influence of inorganic electrolyte on the properties of carbon quantum dots in electrochemical exfoliation. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114673] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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98
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Xu A, Wang G, Li Y, Dong H, Yang S, He P, Ding G. Carbon-Based Quantum Dots with Solid-State Photoluminescent: Mechanism, Implementation, and Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004621. [PMID: 33145929 DOI: 10.1002/smll.202004621] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/18/2020] [Indexed: 05/24/2023]
Abstract
Carbon-based quantum dots (CQDs), including spherical carbon dots and graphene quantum dots, are an emerging class of photoluminescent (PL) materials with unique properties. Great progress has been made in the design and fabrication of high-performance CQDs, however, the challenge of developing solid-state PL CQDs have aroused great interest among researchers. A clear PL mechanism is the basis for the development of high-performance solid-state CQDs for light emission and is also a prerequisite for the realization of multiple practical applications. However, the extremely complex structure of a CQD greatly limits the understanding of the solid-state PL mechanism of CQDs. So far, a variety of models have been proposed to explain the PL of solid-state CQDs, but they have not been unified. This review summarizes the current understanding of the solid-state PL of solid-state CQDs from the perspective of energy band theory and electronic transitions. In addition, the common strategies for realizing solid-state PL in CQDs are also summarized. Furthermore, the applications of CQDs in the fields of light-emitting devices, anti-counterfeiting, fingerprint detection, etc., are proposed. Finally, a brief outlook is given, highlighting current problems, and directions for development of solid-state PL of CQDs.
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Affiliation(s)
- Anli Xu
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Gang Wang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Yongqiang Li
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Dong
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Siwei Yang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Peng He
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Guqiao Ding
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, CAS Center for Excellence in Superconducting Electronics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Yoon J, Shin M, Lim J, Lee JY, Choi JW. Recent Advances in MXene Nanocomposite-Based Biosensors. BIOSENSORS 2020; 10:E185. [PMID: 33233574 PMCID: PMC7699737 DOI: 10.3390/bios10110185] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/15/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022]
Abstract
The development of advanced biosensors with high sensitivity and selectivity is one of the most demanded concerns in the field of biosensors. To meet this requirement, up until now, numerous nanomaterials have been introduced to develop biosensors for achieving high sensitivity and selectivity. Among the latest nanomaterials attracting attention, MXene is one of the best materials for the development of biosensors because of its various superior properties. MXenes are two-dimensional inorganic compounds with few atomic layers that possess excellent characteristics including high conductivity and superior fluorescent, optical, and plasmonic properties. In this review, advanced biosensors developed on the basis of the MXene nanocomposite are discussed with the selective overview of recently reported studies. For this, introduction of the MXene including the definition, synthesis methods, and its properties are discussed. Next, MXene-based electrochemical biosensors and MXene-based fluorescent/optical biosensors are provided, which are developed on the basis of the exceptional properties of the MXene nanocomposite. This review will suggest the direction for use of the Mxene nanocomposite to develop advanced biosensors with high sensitivity and selectivity.
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Affiliation(s)
- Jinho Yoon
- Department of Chemical & Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 04107, Korea; (J.Y.); (M.S.); (J.L.)
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Minkyu Shin
- Department of Chemical & Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 04107, Korea; (J.Y.); (M.S.); (J.L.)
| | - Joungpyo Lim
- Department of Chemical & Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 04107, Korea; (J.Y.); (M.S.); (J.L.)
| | - Ji-Young Lee
- Department of Chemical & Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 04107, Korea; (J.Y.); (M.S.); (J.L.)
| | - Jeong-Woo Choi
- Department of Chemical & Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 04107, Korea; (J.Y.); (M.S.); (J.L.)
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100
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Gao Z, Hao T, Fang Q, Wu C, Zhou Z. Study on the fluorescence of double-emission carbon quantum dots by improved intercept method. Methods Appl Fluoresc 2020; 9. [PMID: 33207333 DOI: 10.1088/2050-6120/abcbec] [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: 06/21/2020] [Accepted: 11/18/2020] [Indexed: 01/05/2023]
Abstract
The fluorescence mechanism of dual-emission carbon quantum dots (DCQDs) is investigated by the improved intercept method, of which the DCQDs with high quantum yield are synthesized by hydrothermal method by using the precursor of sulfadiazine. The research of the morphology, chemical properties and fluorescence properties on DCQDs, shows that DCQDs have graphene-like structure and well-resolved lattice fringes, and that DCQDs fluorescence emission as well intensity has reversibility between acid and alkaline. Based on the ultraviolet absorption spectrum (UV-vis) of the DCQDs, the band gap of DCQDs is estimated by the improved intercept method. Then, the change law of DCQDs emission wavelength at different excitation wavelengths is studied by using the estimated band gap. It is found that the improved intercept method is well consisted with the emission change law of DCQDs at different excitation wavelengths. In addition, the influence of different concentration of Fe3+ on the estimated band gap of DCQDs shows that the Fe3+ has big influence on the band gap of 3.99 eV and 3.06 eV but almost no effect on band gap of 4.93 eV and 3.67 eV. It indicates that the quenching of Fe3+ to DCQDs may be due to the band gap caused by surface defect is changed by Fe3+. Also, DCQDs are used as probe to detect Fe3+ and used as spray ink. Thereby, the improved intercept method may provide a new direction for researching the fluorescence mechanism of carbon quantum dots.
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Affiliation(s)
| | - Tongfan Hao
- Jiangsu University, Zhenjiang, Jiangsu, CHINA
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