1
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Wang Y, Wu R, Zhang Y, Cheng S, Wang B, Zhang Y, Zhang Y. One-step synthesis of N, S-doped carbon dots with green emission and their application in 4-NP detection, pH sensing, and cell imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123709. [PMID: 38043293 DOI: 10.1016/j.saa.2023.123709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 11/21/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023]
Abstract
Using p-aminophenol and dithioacetamide as precursors, green luminescent nitrogen (N) and sulfur (S) co-doped carbon dots (N, S-CDs) are prepared by hydrothermal method with the quantum yield (QY) of 7.1 %. Superior properties of the N, S-CDs including high photostability, outstanding biocompatibility, and desirable biological penetration were found, which could realize the monitor of 4-nitrophenol (4-NP) and pH. The N, S-CDs can be designed as a fluorescent probe for sensitive detection of 4-NP in water samples with linear ranges of 0-85 µM and a detection limit of 0.037 µM. Moreover, the fluorescence intensity of N, S-CDs is sensitive to pH and shows a linear relationship with pH values ranging from 3.50 to 7.25 and 7.25-12.00, accompanied with a significant color variation of the N, S-CDs solution from colorless to brown. Finally, the proposed N, S-CDs have also been applied to monitor the 4-NP in oocysts due to its low cytotoxicity, providing a great capacity for various targets molecules detection.
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Affiliation(s)
- YingTe Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China.
| | - RongRong Wu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - YingJie Zhang
- YangQuan NO. 7 Middle School of ShanXi, YangQuan 045000, China
| | - SiRong Cheng
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - BoHan Wang
- Department of Electrical and Computer Engineering, McGill University, Montreal, Quebec H3A0E9, Canada
| | - Yong Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - YuanYuan Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
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2
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Karaca M, Eroğlu Z, Açışlı Ö, Metin Ö, Karaca S. Boosting Tetracycline Degradation with an S-Scheme Heterojunction of N-Doped Carbon Quantum Dots-Decorated TiO 2. ACS OMEGA 2023; 8:26597-26609. [PMID: 37521662 PMCID: PMC10373195 DOI: 10.1021/acsomega.3c03532] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 06/28/2023] [Indexed: 08/01/2023]
Abstract
N-doped carbon quantum dots (N-CQDs) derived from the Rumex crispus L. plant were incorporated into TiO2 via a facile hydrothermal method. As-prepared materials were characterized and used in the photocatalytic tetracycline (TC) degradation under UVA light irradiation by examining several operational parameters involving the N-CQDs amount, initial TC concentration, pH, and photocatalytic reaction time. XRD analysis revealed the conversion of the rutile phase to the anatase phase after the incorporation of N-CQDs into the TiO2 structure. The results revealed that the N-CQDs/TiO2 photocatalysts demonstrated the highest efficiency in TC degradation compared to other processes of adsorption, photolysis (UVA), and photocatalysis with TiO2 (TiO2/UVA). Under optimized conditions, 10 mg/L TC at pH 5.15 with 0.2 g/L N-CQDs/TiO2 catalyst showed 97.7% photocatalytic degradation for 120 min under UVA irradiation. The formation of an S-scheme heterojunction between N-CQDs and TiO2 provided enhanced charge separation and strong redox capability, causing significant improvement in the photocatalytic performance of N-CQDs/TiO2. Trapping experiments showed that O2•- and h+ are the predominant reactive species for the TC elimination in an aqueous solution.
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Affiliation(s)
- Melike Karaca
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
| | - Zafer Eroğlu
- Department
of Chemistry, College of Sciences, Koç
University, Sarıyer, 34450 Istanbul, Turkey
| | - Özkan Açışlı
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
| | - Önder Metin
- Department
of Chemistry, College of Sciences, Koç
University, Sarıyer, 34450 Istanbul, Turkey
- Koç
University Surface Science and Technology Center (KUYTAM), Sarıyer, 34450 Istanbul, Turkey
| | - Semra Karaca
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
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3
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Wang S, Li Y, Song J, Zhang J, Ma Y. Recent progress in the electrochemical quantification of nitrophenols. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Shi H, Li X, Li Y, Feng S. Carbon dots derived from peptone as "off-on" fluorescent probes for the detection of oxalic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 287:122038. [PMID: 36327809 DOI: 10.1016/j.saa.2022.122038] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 10/12/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
A simple and rapid microwave heating approach was reported for the preparation of water soluble carbon dots (CDs) using peptone as carbon source with the assistance of ethylenediamine. Several characterization techniques such as transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) were employed to analyze CDs. The optical properties of synthesized CDs were examined by UV-vis and fluorescence spectroscopy. The CDs exhibit strong blue emission under 365 nm UV lamp and have the excitation and pH (2.0-12.0) dependent emission behavior. The fluorescence intensity of CDs can be selectively quenched by Co2+ via dynamic mechanism, while the addition of oxalic acid (OA) results in a remarkable recovery of the fluorescence intensity due to the strong coordination binding between oxalic acid and Co2+. Hence, the prepared CDs can conveniently serve as "off-on" fluorescent probes for highly sensitive determination of oxalic acid. The wide linear range is 0.5-70 mg/L with a low detection limit of 0.288 mg/L. Furthermore, the probes were successfully applied to detect oxalic acid in tomato and cherry tomato samples with the recovery of 96.4 %-106.4 % and the relative standard deviation lower than 0.25 %.
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Affiliation(s)
- Huimin Shi
- School of Chemistry and Chemical Engineering, Henan Normal University, Xin Xiang 453007, China; Department of Basic Medical Science, Zhengzhou Shuqing Medical College, Zhengzhou 450064, China
| | - Xue Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xin Xiang 453007, China
| | - Yingying Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xin Xiang 453007, China
| | - Suling Feng
- School of Chemistry and Chemical Engineering, Henan Normal University, Xin Xiang 453007, China.
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5
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Venugopalan P, Vidya N. Microwave assisted green synthesis of carbon dots from sweet flag (Acorus calamus) for fluorescent sensing of 4-nitrophenol. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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6
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Li H, Chen Q, Wang Y, Zhang Z, Chen H, Wang Z, Gong Z. A dual-mode pH sensor film based on the pyrene-based Zr-MOF self-destruction with fluorescence turn-on effect. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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7
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Jiang L, Yuan L, Liu Z, Xiang Y, Song F, Meng L, Tu Y. Facile hydrothermal synthesis and purification of fluorescent carbon dots for food colorant tartrazine detection based on a dual-mode nanosensor. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:4127-4132. [PMID: 36222124 DOI: 10.1039/d2ay01140a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Colorant tartrazine is widely used in the food industry, but its long-term and excessive consumption is harmful to human health. Therefore, it is necessary to establish a sensitive detection method for tartrazine. Blue fluorescent carbon dots with L-arginine and o-phenylenediamine as precursors, namely L-Arg/oPD-CDs, were prepared via the hydrothermal method. Then, L-Arg/oPD-CDs were further purified by dialysis, thin layer chromatography and column chromatography. A dual-mode nanosensor based on fluorescent and UV absorption was successfully developed. Excellent linear ranges of 0-5 μM and 10-50 μM were obtained with a low detection limit of 42.3 nM based on fluorescence. A good linear range of 0-50 μM was obtained with a low detection limit of 130.15 nM based on UV absorption. The quenching mechanism of tartrazine towards L-Arg/oPD-CDs fluorescence was the inner filter effect. In addition, a dual-mode nanosensor was used for tartrazine determination in millet, maize flour, carbonated drink, and sugar samples. This study provides new insight into the detection of tartrazine by applying a dual-mode nanosensor.
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Affiliation(s)
- Lei Jiang
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Lin Yuan
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Ze Liu
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Yingying Xiang
- Department of Stomatology, Yańan Hospital Affiliated to Kunming Medical University, Kunming, 650031, China
| | - Fei Song
- Department of Minimally Invasive Intervention, The Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, China
| | - Lifen Meng
- School of Chemical Engineering, Guizhou University of Engineering Science, Guizhou, 550025, China
| | - Yujiao Tu
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
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Sahu Y, Hashmi A, Patel R, Singh AK, Susan MABH, Carabineiro SAC. Potential Development of N-Doped Carbon Dots and Metal-Oxide Carbon Dot Composites for Chemical and Biosensing. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3434. [PMID: 36234561 PMCID: PMC9565249 DOI: 10.3390/nano12193434] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 05/31/2023]
Abstract
Among carbon-based nanomaterials, carbon dots (CDs) have received a surge of interest in recent years due to their attractive features such as tunable photoluminescence, cost effectiveness, nontoxic renewable resources, quick and direct reactions, chemical and superior water solubility, good cell-membrane permeability, and simple operation. CDs and their composites have a large potential for sensing contaminants present in physical systems such as water resources as well as biological systems. Tuning the properties of CDs is a very important subject. This review discusses in detail heteroatom doping (N-doped CDs, N-CDs) and the formation of metal-based CD nanocomposites using a combination of matrices, such as metals and metal oxides. The properties of N-CDs and metal-based CDs nanocomposites, their syntheses, and applications in both chemical sensing and biosensing are reviewed.
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Affiliation(s)
- Yogita Sahu
- Department of Chemistry, Govt. V. Y. T. PG. Autonomous College, Durg 491001, Chhattisgarh, India
| | - Ayesha Hashmi
- Department of Chemistry, Govt. V. Y. T. PG. Autonomous College, Durg 491001, Chhattisgarh, India
| | - Rajmani Patel
- Hemchand Yadav University, Durg 491001, Chhattisgarh, India
| | - Ajaya K. Singh
- Department of Chemistry, Govt. V. Y. T. PG. Autonomous College, Durg 491001, Chhattisgarh, India
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | | | - Sónia A. C. Carabineiro
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
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9
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Wang C, Xu J, Zhang R, Zhao W. Facile and low-energy-consumption synthesis of dual-functional carbon dots from Cornus walteri leaves for detection of p-nitrophenol and photocatalytic degradation of dyes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128351] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Bazrafshan E, Dadfarnia S, Haji Shabani AM, Afsharipour R. Determination of lamotrigine by fluorescence quenching of N-doped graphene quantum dots after its solid-phase extraction using magnetic graphene oxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120530. [PMID: 34740000 DOI: 10.1016/j.saa.2021.120530] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
A sensitive fluorescent nanoprobe is reported for the determination of lamotrigine after its preconcentration by magnetic graphene oxide nanocomposite. The fluorescent nanoprobe is based on the quenching effect of lamotrigine on the nitrogen graphene quantum dots fluorescence at 440 nm, through strong hydrogen bonding. Under optimum conditions, the quenching fluorescent intensity of nitrogen graphene quantum dots shows linearity with the lamotrigine concentration in the range of 2.0-45.0 µg L-1, limits of detection (LOD), and quantification of 0.39 and 1.28 µg L-1 respectively. The parameters affecting the extraction and determination of lamotrigine were optimized via the central composite design (CCD) and one at the time method, respectively. The developed method was successfully employed for the extraction and quantification of lamotrigine in biological samples.
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Affiliation(s)
- Elham Bazrafshan
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 98195-741, Iran
| | - Shayessteh Dadfarnia
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 98195-741, Iran.
| | | | - Roya Afsharipour
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 98195-741, Iran
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11
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Zhu L, Chen L, Gu J, Ma H, Wu H. Carbon-Based Nanomaterials for Sustainable Agriculture: Their Application as Light Converters, Nanosensors, and Delivery Tools. PLANTS (BASEL, SWITZERLAND) 2022; 11:511. [PMID: 35214844 PMCID: PMC8874462 DOI: 10.3390/plants11040511] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 05/05/2023]
Abstract
Nano-enabled agriculture is now receiving increasing attentions. Among the used nanomaterials, carbon-based nanomaterials are good candidates for sustainable agriculture. Previous review papers about the role of carbon-based nanomaterials in agriculture are either focused on one type of carbon-based nanomaterial or lack systematic discussion of the potential wide applications in agriculture. In this review, different types of carbon-based nanomaterials and their applications in light converters, nanosensors, and delivery tools in agriculture are summarized. Possible knowledge gaps are discussed. Overall, this review helps to better understand the role and the potential of carbon-based nanomaterials for nano-enabled agriculture.
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Affiliation(s)
- Lan Zhu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (L.C.); (H.M.)
| | - Lingling Chen
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (L.C.); (H.M.)
| | - Jiangjiang Gu
- School of Science, Huazhong Agricultural University, Wuhan 430070, China;
| | - Huixin Ma
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (L.C.); (H.M.)
| | - Honghong Wu
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (L.Z.); (L.C.); (H.M.)
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen 511464, China
- Shenzhen Branch of Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 511464, China
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12
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Zhu L, Shen D, Wang Q, Luo KH. Green Synthesis of Tunable Fluorescent Carbon Quantum Dots from Lignin and Their Application in Anti-Counterfeit Printing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:56465-56475. [PMID: 34784479 DOI: 10.1021/acsami.1c16679] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Lignin converted to carbon quantum dots (CQDs) attracts tremendous attention for large-scale production of carbon nanomaterials and value-added disposal of biomass wastes (such as the black liquor from pulping industry and the residue from hydrolysis of biomass). The green synthesis of lignin-derived CQDs is reported via a facile two-step method with the adjustment of acid additives containing N or S. The resulting series of CQDs exhibit bright fluorescence in gradient colors from blue to yellowish green, among which the N, S co-doped CQDs with the addition of 2,4-diaminobenzene sulfonic acid show an optimal fluorescence quantum yield (QY) of 30.5%. The red-shift photoluminescence emission behaviors of these CQDs can be attributed to the increased graphitization degree and reduced optical energy band gaps (2.47 → 2.17 eV) with regard to the incorporation of various heteroatoms. The improved fluorescence QYs are consistent with the variation trend of the increased N/C content in the CQDs. The yellowish green-emissive CQDs with bright fluorescence, strong water solubility, and excellent chemical stability perform well in anti-counterfeiting printing. The promising and sustainable approach for the synthesis of tunable fluorescent CQDs exhibits the value-added utilization of lignin for the fluorescence ink production.
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Affiliation(s)
- Lingli Zhu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China
| | - Dekui Shen
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China
| | - Qi Wang
- College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310087, Zhejiang, P. R. China
| | - Kai Hong Luo
- Department of Mechanical Engineering, University College London, London WC1E 7JE, U.K
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13
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Huang X, Yang C, Chen Y, Zhu Z, Zhou L. Cuttlefish ink-based N and S co-doped carbon quantum dots as a fluorescent sensor for highly sensitive and selective para-nitrophenol detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5351-5359. [PMID: 34730132 DOI: 10.1039/d1ay01496j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Para-nitrophenol (PNP) is an important raw material for organic synthesis and its extensive use has produced a series of environmental problems. Here, we develop a highly sensitive and selective fluorescent detection method for PNP with cuttlefish ink-based carbon quantum dots (CQDs). The cuttlefish ink, which is rich in eumelanin, is utilized as the only precursor to synthesize the CQDs via a one-step hydrothermal method. The resultant CQDs were co-doped with nitrogen and sulfur and exhibited excellent fluorescence properties. Two optimal emissions can be observed at the excitation/emission wavelengths of 320/385 nm and 390/465 nm, respectively. In the presence of PNP, the two emissions are remarkably quenched. PNP can be measured in the linear detection concentration range of 1.25-50 μM (Em = 385 nm and R2 = 0.9884) or 1.25-27.5 μM (Em = 465 nm and R2 = 0.9818) with a detection limit of 0.05 μM. Significantly, it is found that a much wider linear detection range of 0.05-125 μM with a lower detection limit of 0.039 μM (3σ/k) can be achieved when log(I385 nm + I465 nm) was utilized to quantify PNP. The investigations of the sensing mechanism suggested that the inner filter effect and photoinduced electron transfer of PNP and N,S-CQDs leads to fluorescence quenching. The sensing method is successfully applied for PNP detection in real water samples with satisfactory recoveries (91.18-103.14%). A new sustainable waste-prevention strategy of cuttlefish ink and a feasible alternative to PNP detection methods is provided in this article.
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Affiliation(s)
- Xiaotong Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Chunli Yang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Yingxin Chen
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Zebin Zhu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Lihua Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
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14
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Sequential detection of vitamin B6 cofactors and nitroaromatics by using albumin-stabilized fluorescent copper nanoclusters. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106778] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Li W, Liu D, Dong D, You T. Microwave-assisted synthesis of fluorescent silicon quantum dots for ratiometric sensing of Hg (II) based on the regulation of energy transfer. Talanta 2021; 226:122093. [PMID: 33676650 DOI: 10.1016/j.talanta.2021.122093] [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: 09/25/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
The rapid and sensitive detection of Hg2+ is highly required to protect the environmental safety and human healthy. In the present work, a ratiometric fluorescent sensing platform, consisting of silicon quantum dots (SiQDs), Rox-labelled DNA (Rox-DNA), and Exonuclease III (Exo III), is developed for the accurate detection of Hg2+. As for fluorescent probe, we report the first use of glutathione as reduction reagent for the microwave synthesis of SiQDs, achieving the facile (using a house-hold microwave oven) and rapid (within 8 min) synthesis. Such SiQDs show pH-independent spectra and reversible fluorescent behavior with temperature. Moreover, experimental results revealed that the electrostatic interaction-induced aggregation of Rox-DNA and SiQDs facilitated the occurring of energy transfer (ET). And detection principle based on the regulation of ET between Rox and SiQDs with Exo III was designed for analysis. ET effect resulted in the fluorescent fading of Rox while that of SiQDs kept stable. For analysis, the addition of Hg2+ led to the formation of double-stranded Rox-DNA via T-Hg2+-T. Exo III would cut these double-stranded DNA to release Rox and Hg2+, thereby impeding the ET effect and recovering the fluorescent of Rox. Such SiQDs/Rox-DNA/Exo III ratiometric fluorescent sensing platform exhibited a linear response concentration range of 0.02 nM-10 nM with a detection limit of 0.01 nM. It was successfully used to analyze the water and soil samples. The reliability was validated by ICP-MS. Our work should promote the practical application of ratiometric fluorescent assay.
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Affiliation(s)
- Wenjia Li
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Dong Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Daming Dong
- National Engineering Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China.
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16
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Abstract
Optical sensors are always fascinating for chemists due to their selectivity, sensitivity, robustness and cost-effective nature.
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Affiliation(s)
- Hafiz Muhammad Junaid
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore 54590
- Pakistan
| | - Amber Rehana Solangi
- National Centre of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro
- Pakistan
| | - Madeeha Batool
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore 54590
- Pakistan
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17
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Zhang W, Li X, Liu Q, Liu G, Yue G, Yang Z, Wang Y, Rao H, Chen Y, Lu C, Wang X. Nitrogen-doped carbon dots from rhizobium as fluorescence probes for chlortetracycline hydrochloride. NANOTECHNOLOGY 2020; 31:445501. [PMID: 32688347 DOI: 10.1088/1361-6528/aba787] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fluorescent nitrogen-doped carbon dots (CDs) were prepared via hydrothermal method at 190 °C for 10 h using rhizobium from soy as the carbon and nitrogen source. Their optical properties, structure, morphology, and functional groups were characterized in detail and the results showed that they possess unique excitation-dependent fluorescence behavior, with average diameter 4.5 ± 2.0 nm and good water dispersibility. Due to the overlap of the UV-vis absorbance of chlortetracycline hydrochloride (CCH) and the fluorescence excitation band of CDs, the fluorescence of the prepared CDs can be quenched by CCH selectively and sensitively. The changes of the fluorescence intensity of CDs have a good linear relationship with the concentration of CCH in a wide concentration range of 5-100 μM, with a detection limit of 0.254 μM. This present method has been successfully applied to determine the CCH in water with recovery ranging from 96.0% to 100.7%.
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Affiliation(s)
- Wei Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, Sichuan, People's Republic of China
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18
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Ren J, Zhang L, Zhao L, Wang X, Yang W. Facile Synthesis of Water-soluble Carbon Spheres for the Sensitive and Selective Determination of Fe 3+, Cr 3+, and Hg 2+ Ions. ANAL SCI 2020; 36:1171-1176. [PMID: 32378524 DOI: 10.2116/analsci.20p055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Water-soluble carbon spheres (CS) were prepared by a facile one-step hydrothermal synthetic method using glucose as a carbon source and sodium hydroxide as additives. The morphology and the chemical structure were characterized by transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). In addition, the ultraviolet-visible (UV-vis) absorption spectrum and the fluorescence spectrum of the prepared CS were also investigated. The emission spectrum of the obtained CS depends on the excitation wavelength, which is similar to that of most carbon quantum dots. The fluorescence of the CS is quenched in the presence of Cr3+, Fe3+ and Hg2+. Based on this feature, the selective and sensitive detections of Cr3+, Fe3+ and Hg2+ were performed, and the detection limits were 6.72, 7.26, and 9.51 μM, respectively.
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Affiliation(s)
- Jie Ren
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment
| | - Lan Zhang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment
| | - Lingling Zhao
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment
| | - Xuemiao Wang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment
| | - Wu Yang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment
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19
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Wang N, Wang X, Lv J, Yang P, Jia W, Bian W, Choi MM. A fluorescent probe using phosphorus-doped graphite carbon nitride nanosheets for the detection of silver ions and cell imaging. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The fluorescent phosphorus-doped graphite carbon nitride (P-g-C3N4) nanosheets have been synthesized as a fluorescence probe using an ultrasonic exfoliating method. The as-prepared P-g-C3N4 nanosheets were characterized by multiple analytical techniques such as transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and infrared spectroscopy. The fluorescence intensity of P-g-C3N4 nanosheets decreases with the increase in concentration of silver ions. A good linear relationship was achieved between the corresponding fluorescence intensity of P-g-C3N4 nanosheets and the concentration of silver ions in the range of 20 nmol/L – 3.2 μmol/L. The quenching mechanism of interaction between P-g-C3N4 nanosheets and silver ions was primarily discussed. The proposed fluorescence probe has been successfully applied to detect silver ions in real water samples and the recoveries range from 96.8% to 103.7%.
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Affiliation(s)
- Ning Wang
- Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Xuan Wang
- Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Junjie Lv
- Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Peng Yang
- The Sixth Affiliated Hospital of Shanxi Medical University and the Affiliated Taigang General Hospital, Taiyuan 030001, Shanxi Province, China
| | - Weihua Jia
- The Sixth Affiliated Hospital of Shanxi Medical University and the Affiliated Taigang General Hospital, Taiyuan 030001, Shanxi Province, China
| | - Wei Bian
- Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Martin M.F. Choi
- Bristol Chinese Christian Church, c/o Tyndale Baptist Church, 137-139 Whiteladies Road, Bristol, BS8 2QG, United Kingdom
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20
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Zhai H, Xiao W, Li Y, Li R, Liu H, Yu L. Sensitive and selective determination of 4‐nitrophenol in water and food using modified polyethyleneimine‐capped carbon dots. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Hui‐Yun Zhai
- Department of Chemistry, School of ScienceTianjin University Tianjin China
| | - Wen‐Li Xiao
- School of Chemical and Environmental EngineeringXinjiang Institute of Engineering Urumqi Xinjiang China
| | - Yan Li
- School of Chemical and Environmental EngineeringXinjiang Institute of Engineering Urumqi Xinjiang China
| | - Rong‐Zhen Li
- Department of Chemistry, School of ScienceTianjin University Tianjin China
| | - Hua‐Ji Liu
- Department of Chemistry, School of ScienceTianjin University Tianjin China
| | - Li‐Ping Yu
- Department of Chemistry, School of ScienceTianjin University Tianjin China
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21
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Ning K, Xiang G, Wang C, Wang J, Qiao X, Zhang R, Jiang X, He L, Zhao W. UV-emitting polyelectrolyte-modified MoS2 quantum dots for selective determination of nitrophenol in water samples based on inner filter effect. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this work, poly(sodium 4-styrenesulfonate) (PSS) modified molybdenum disulfide quantum dots (MoS2-PSS QDs) were synthesized via a simple hydrothermal method using l-cysteine and anhydrous sodium molybdate as precursors and PSS as a modification reagent, and a selective and sensitive fluorescent sensing method for the determination of p-nitrophenol (p-NP) based on their UV emission was developed. The obtained MoS2-PSS QDs have an obvious UV emission peak (390 nm) with quantum yield of 5.13%. The strong absorption peak of p-NP at 400 nm has large spectral overlap with the UV emission peak (390 nm) of MoS2-PSS QDs. Because of this p-NP absorption, the fluorescence of MoS2-PSS QDs at 390 nm is quenched with the introduction of p-NP via the inner filter effect (IFE) and the decreased fluorescence intensity was linearly proportional to the p-NP concentration in the range of 1–20 μmol/L, leading to a detection limit of 0.13 μmol/L for p-NP. The MoS2 QDs-based fluorescent probe for p-NP is sensitive and selective and was successfully applied in the determination of p-NP in the pond water samples with satisfactory results.
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Affiliation(s)
- Keke Ning
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Guoqiang Xiang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
- Engineering Technology Research Center for Grain & Oil Food, State Administration of Grain, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Cuicui Wang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Jingxing Wang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Xiaohong Qiao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Ruofei Zhang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Xiuming Jiang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Lijun He
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
| | - Wenjie Zhao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China
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22
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Frank BP, Sigmon LR, Deline AR, Lankone RS, Gallagher MJ, Zhi B, Haynes CL, Fairbrother DH. Photochemical Transformations of Carbon Dots in Aqueous Environments. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4160-4170. [PMID: 32163703 DOI: 10.1021/acs.est.9b07437] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The unique physicochemical and luminescent properties of carbon dots (CDs) have motivated research efforts toward their incorporation into commercial products. Increased use of CDs will inevitably lead to their release into the environment where their fate and persistence will be influenced by photochemical transformations, the nature of which is poorly understood. This knowledge gap motivated the present investigation of the effects of direct and indirect photolysis on citric and malic acid-based CDs. Our results indicate that natural sunlight will rapidly and non-destructively photobleach CDs into optically inactive carbon nanoparticles. We demonstrate that after photobleaching, •OH exposure degrades CDs in a two-step process that will span several decades in natural waters. The first step, occurring over several years of •OH exposure, involves depolymerization of the CD structure, characterized by volatilization of over 60% of nascent carbon atoms and the oxidation of nitrogen atoms into nitro groups. This is followed by a slower oxidation of residual carbon atoms first into carboxylic acids and then volatile carbon species, while nitrogen atoms are oxidized into nitrate ions. Considered alongside related CD studies, our findings suggest that the environmental behavior of CDs will be strongly influenced by the molecular precursors used in their synthesis.
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Affiliation(s)
- Benjamin P Frank
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Leslie R Sigmon
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Alyssa R Deline
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Ronald S Lankone
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Miranda J Gallagher
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Bo Zhi
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Christy L Haynes
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - D Howard Fairbrother
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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23
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Bogireddy NKR, Cruz Silva R, Valenzuela MA, Agarwal V. 4-nitrophenol optical sensing with N doped oxidized carbon dots. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121643. [PMID: 31780290 DOI: 10.1016/j.jhazmat.2019.121643] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/27/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
In this work, we report a facile strategy for 4-nitrophenol (4-NP) sensing using highly luminescent nitrogen-doped oxidized carbon dots. The quenching of fluorescence (turn OFF), with the addition of trace amounts of organic pollutant (4-NP) in NOCDs, has been attributed to the complete reduction of nitrogen-doped oxidized carbon dots (NOCDs) to reduced nitrogen-doped oxidized carbon dots (rNOCDs) and its formation was confirmed by infrared, X-ray diffraction and X-ray photoelectron spectroscopy measurements. The chemical changes in oxygen-containing functional groups of NOCDs, in the presence of 4-NP, are elucidated and corresponding characterization through XPS reveals the changes in the peak intensities of CC (284.5 eV) and OCO (288.6 eV), indicating a decrement in hydroxyl groups that hinder its complete reduction to NOCDs. The sensitivity of NOCDs towards 4-NP has been tested in spiked tap water in the concentration range 2 μM to 2 mM with the minimum detection limit of 2 μM (linear detection range from 2 to 100 μM with regression coefficient R2 =0.99). The proposed simple sensing platform can be used to reduce NOCDs and simultaneously sense low concentrations of 4-NP. Finally, an effective treatment to improve the reduction of nitrogen-doped graphene oxide is proposed.
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Affiliation(s)
- N K R Bogireddy
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Av. Univ. 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico
| | - R Cruz Silva
- Global Aqua Innovation Center, Shinshu University, Institute of Carbon Science and Technology, Faculty of Engineering, Shinshu University, Nagano City, 380-8553 Japan
| | - Miguel A Valenzuela
- Lab. Catálisis y Materiales, ESIQIE-Instituto Politécnico Nacional, Zacatenco, 07738 CDMX, Mexico
| | - Vivechana Agarwal
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Av. Univ. 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
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24
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Tammina SK, Yang Y. Highly sensitive and selective detection of 4-nitrophenol, and on-off-on fluorescence sensor for Cr (VI) and ascorbic acid detection by glucosamine derived n-doped carbon dots. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112134] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Wang D, Zhang L, Li P, Li J, Dong C. Convenient synthesis of carbon nanodots for detecting Cr( vi) and ascorbic acid by fluorimetry. NEW J CHEM 2020. [DOI: 10.1039/d0nj04495d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Carbon nanodots (CDs) were simply synthesized from Sophora flavescens Ait. “On–off–on” fluorescent probes for the sensitive and selective detections of Cr(iv) and ascorbic acid (AA) were founded and well applied in real samples.
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Affiliation(s)
- Dongxiu Wang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Lin Zhang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Pengxia Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Junfen Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Chuan Dong
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- China
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26
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Huang R, Liu H, Liu K, Wang G, Liu Q, Wang Z, Liu T, Miao R, Peng H, Fang Y. Marriage of Aggregation-Induced Emission and Intramolecular Charge Transfer toward High Performance Film-Based Sensing of Phenolic Compounds in the Air. Anal Chem 2019; 91:14451-14457. [DOI: 10.1021/acs.analchem.9b03096] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Rongrong Huang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Huijing Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Ke Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Gang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Quan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Zhaolong Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Rong Miao
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Haonan Peng
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
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27
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A Novel Application of Fluorine Doped Carbon Dots Combining Vortex-Assisted Liquid-Liquid Microextraction for Determination of 4-Nitrophenol with Spectrofluorimetric Method. J Fluoresc 2019; 29:1133-1141. [DOI: 10.1007/s10895-019-02427-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/15/2019] [Indexed: 11/25/2022]
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28
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Patel R, Bothra S, Kumar R, Sahoo SK. Selective turn-off sensing of picric acid and p-nitrophenol using fluorescent histidine. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.nanoso.2019.100345] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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29
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Naik V, Zantye P, Gunjal D, Gore A, Anbhule P, Kowshik M, Bhosale SV, Kolekar G. Nitrogen-Doped Carbon Dots via Hydrothermal Synthesis: Naked Eye Fluorescent Sensor for Dopamine and Used for Multicolor Cell Imaging. ACS APPLIED BIO MATERIALS 2019; 2:2069-2077. [DOI: 10.1021/acsabm.9b00101] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Vaibhav Naik
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Pranjita Zantye
- Department of Biological Sciences, BITS Pilani K K Birla Goa Campus, Sancoale, Goa 403726, India
| | - Datta Gunjal
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Anil Gore
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Prashant Anbhule
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
| | - Meenal Kowshik
- Department of Biological Sciences, BITS Pilani K K Birla Goa Campus, Sancoale, Goa 403726, India
| | | | - Govind Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra 416004, India
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30
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Microwave-assisted facile synthesis of polymer dots as a fluorescent probe for detection of cobalt(II) and manganese(II). Anal Bioanal Chem 2019; 411:2373-2381. [DOI: 10.1007/s00216-019-01678-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/23/2019] [Accepted: 02/06/2019] [Indexed: 10/27/2022]
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31
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Han L, Liu SG, Liang JY, Ju YJ, Li NB, Luo HQ. pH-mediated reversible fluorescence nanoswitch based on inner filter effect induced fluorescence quenching for selective and visual detection of 4-nitrophenol. JOURNAL OF HAZARDOUS MATERIALS 2019; 362:45-52. [PMID: 30236941 DOI: 10.1016/j.jhazmat.2018.09.025] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 09/02/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
Being a common hazardous waste, 4-nitrophenol (4-NP) has caused a serious threat to humans and environment. Therefore, rapid and selective detection of 4-NP, especially using a simple and portable instrument, is highly desired for human health and environmental monitoring. Herein, we develop a novel pH-mediated reversible fluorescence nanoswitch for selectively detecting 4-NP by using water-soluble fluorescent polymer carbon dots (PCDs) as a probe. The fluorescence of PCDs can be quenched by 4-NP via inner filter effect (IFE) because its excitation spectrum well overlaps with the absorption spectrum of 4-NP under alkaline condition. However, an obvious blue shift of the absorption peak of 4-NP occurs under acidic condition, causing the fluorescence recovery of PCDs due to the disappearance of IFE. On the basis of this principle, a pH-mediated reversible fluorescence nanoswitch was constructed and a broad linear range was obtained from 0.5 to 60 μM with a detection limit of 0.26 μM for 4-NP. Furthermore, this approach was successfully applied to detect 4-NP in real water samples and a portable polyamide film-based sensor was developed for visual detection of 4-NP, which offers a promising platform for the detection of 4-NP in on-site and resource-poor settings.
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Affiliation(s)
- Lei Han
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jia Yu Liang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yan Jun Ju
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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32
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Sun XY, Yuan MJ, Liu B, Shen JS. Carbon dots as fluorescent probes for detection of VB 12 based on the inner filter effect. RSC Adv 2018; 8:19786-19790. [PMID: 35540996 PMCID: PMC9080768 DOI: 10.1039/c8ra03070g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/11/2018] [Indexed: 12/19/2022] Open
Abstract
In this study, we constructed a new fluorescent sensing for VB12 and investigated the mechanism of vitamin B12 (VB12) quenching fluorescence of carbon dots (CDs). The fluorescence suppression is attributed to the inner filter effect (IFE) because of the overlap between UV-vis absorption spectrum of VB12 and emission/excitation spectra of CDs. This CDs-based sensor provides obvious advantages of simplicity, convenience, rapid response, high selectivity and sensitivity, which has potential application for the detection of VB12 in the medical and food industry.
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Affiliation(s)
- X Y Sun
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University) Xiamen 361021 China +86-592-6160088 +86-592-6162231
| | - M J Yuan
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University) Xiamen 361021 China +86-592-6160088 +86-592-6162231
| | - B Liu
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University) Xiamen 361021 China +86-592-6160088 +86-592-6162231
| | - J S Shen
- College of Materials Science and Engineering, Huaqiao University, Key Laboratory of Molecular Designing and Green Conversions (Fujian University) Xiamen 361021 China +86-592-6160088 +86-592-6162231
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33
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Zhao J, Pan X, Sun X, Pan W, Yu G, Wang J. Detection of metronidazole in honey and metronidazole tablets using carbon dots-based sensor via the inner filter effect. LUMINESCENCE 2018. [DOI: 10.1002/bio.3467] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jianru Zhao
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Xiaohua Pan
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Xiaobo Sun
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Wei Pan
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Guifeng Yu
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
| | - Jinping Wang
- College of Chemical and Pharmaceutical Sciences; Qingdao Agricultural University; Qingdao P. R. China
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34
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Xiao N, Liu SG, Mo S, Li N, Ju YJ, Ling Y, Li NB, Luo HQ. Highly selective detection of p-nitrophenol using fluorescence assay based on boron, nitrogen co-doped carbon dots. Talanta 2018; 184:184-192. [PMID: 29674031 DOI: 10.1016/j.talanta.2018.02.114] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 02/22/2018] [Accepted: 02/28/2018] [Indexed: 01/18/2023]
Abstract
p-Nitrophenol (p-NP) contaminants seriously endanger environmental and living beings health, hence to establish a sensitive and selective method is of great importance for the determination of p-NP. In this work, boron and nitrogen co-doped carbon dots (B,N-CDs) were synthesized by one-step hydrothermal method using 3-aminophenylboronic acid as the sole precursor. The product was characterized through high-resolution transmission electron microscopy, fluorescence spectroscopy, UV-visible absorption spectroscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. Without any functionalized modification, B,N-CDs can be directly applied as a 'turn-off' fluorescent probe for rapid, highly selective, and sensitive detection of p-NP. The fluorescent sensor based on the B,N-CDs exhibited a broad linear response to the concentration of p-NP in the range of 0.5 - 60 μM and 60 - 200 μM, respectively, and provided a detection limit of 0.2 μM. It was found that only the absorption spectrum of p-NP has a wide overlap with the fluorescence excitation and emission spectra of B,N-CDs compared to those of other representative analogues. The response mechanism was due to the inner filter effect and the formation of dynamic covalent B-O bonds between B,N-CDs and p-NP, which endowed the sensing platform with the rapid response and high selectivity to p-NP. Finally, the sensor showed the practicability of p-NP determination in environmental water samples.
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Affiliation(s)
- Na Xiao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Mo
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Na Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yan Jun Ju
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Ling
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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35
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Liu Y, Cao N, Gui W, Ma Q. Nitrogen-doped graphene quantum dots-based fluorescence molecularly imprinted sensor for thiacloprid detection. Talanta 2018; 183:339-344. [PMID: 29567185 DOI: 10.1016/j.talanta.2018.01.063] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/22/2018] [Accepted: 01/29/2018] [Indexed: 10/18/2022]
Abstract
In this paper, a test strip-based sensor was developed for thiacloprid quantitative detection based on PDA molecularly imprinted polymer (MIP) and nitrogen-doped graphene quantum dots (N-GQDs). Thiacloprid is a new type of nicotine insecticide, which can block the normal neurotransmitter delivery process in insects. In the sensing system, N-GQDs were immersed into filter paper at first. Then, dopamine (DA) with thiacloprid can be self-polymerized on test strip surface to form the uniform PDA film. After removed thiacloprid template, the established poly dopamine (PDA) MIP can selectively recognize thiacloprid. As a result, captured thiacloprid can enhance the fluorescence intensity of N-GQDs into the test strip. As a result, the fluorescence intensity of N-GQDs can be linearly related within a certain range of thiacloprid concentration. Under the optimum conditions, the proposed sensor for thiacloprid detection exhibited a linear ranging from 0.1 mg/L to 10 mg/L with a low detection limit of 0.03 mg/L. The N-GQDs based test strip-based sensor for thiaclopridis reported for the first time. The sensing system has high selectivity to thiacloprid and provides new opportunities in the pesticide detection.
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Affiliation(s)
- Yang Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Nan Cao
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Wenying Gui
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
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36
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Zhu W, Saddam Khan M, Cao W, Sun X, Ma H, Zhang Y, Wei Q. Ni(OH)2/NGQDs-based electrochemiluminescence immunosensor for prostate specific antigen detection by coupling resonance energy transfer with Fe3O4@MnO2 composites. Biosens Bioelectron 2018; 99:346-352. [DOI: 10.1016/j.bios.2017.08.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 07/22/2017] [Accepted: 08/03/2017] [Indexed: 12/30/2022]
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N-Doped graphene quantum dot@mesoporous silica nanoparticles modified with hyaluronic acid for fluorescent imaging of tumor cells and drug delivery. Mikrochim Acta 2017; 185:66. [DOI: 10.1007/s00604-017-2598-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/30/2017] [Indexed: 12/12/2022]
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38
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Liu W, Li C, Sun X, Pan W, Yu G, Wang J. Highly crystalline carbon dots from fresh tomato: UV emission and quantum confinement. NANOTECHNOLOGY 2017; 28:485705. [PMID: 28961145 DOI: 10.1088/1361-6528/aa900b] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this article, fresh tomatoes are explored as a low-cost source to prepare high-performance carbon dots by using microwave-assisted pyrolysis. Given that amino groups might act as nucleophiles for cleaving covalent bridging ester or ether in the crosslinked macromolecules in the biomass bulk, ethylenediamine (EDA) and urea with amino groups were applied as nucleophiles to modulate the chemical composites of the carbon nanoparticles in order to tune their fluorescence emission and enhance their quantum yields. Very interestingly, the carbon dots synthesized in the presence of urea had a highly crystalline nature, a low-degree amorphous surface and were smaller than 5 nm. Moreover, the doped N contributed to the formation of a cyclic form of core that resulted in a strong electron-withdrawing ability within the conjugated C plane. Therefore, this type of carbon dot exhibited marked quantum confinement, with the maximum fluorescence peak located in the UV region. Carbon nanoparticles greater than 20 nm in size, prepared using pristine fresh tomato and in the presence of EDA, emitted surface state controlled fluorescence. Additionally, carbon nanoparticles synthesized using fresh tomato pulp in the presence of EDA and urea were explored for bioimaging of plant pathogenic fungi and the detection of vanillin.
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Affiliation(s)
- Weijian Liu
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
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39
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Dong X, Awak MA, Tomlinson N, Tang Y, Sun YP, Yang L. Antibacterial effects of carbon dots in combination with other antimicrobial reagents. PLoS One 2017; 12:e0185324. [PMID: 28934346 PMCID: PMC5608398 DOI: 10.1371/journal.pone.0185324] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/11/2017] [Indexed: 12/13/2022] Open
Abstract
This study was designed to investigate the antimicrobial effects of CDots in combination with other antimicrobial reagents, including H2O2, Na2CO3, and AcOH (acetic acid). CDots were synthesized and passivated with 2,2'-(ethylenedioxy)bis(ethylamine) (EDA). The minimal inhibitory concentration (MIC) of CDots was 64 μg/mL on both Gram negative bacteria E.coli cells and Gram positive bacteria Bacillus subtilis cells. When CDots were combined with H2O2, antibacterial synergistic effects were observed based on the fractional inhibitory concentration (FIC) index, and further confirmed by an isobologram analysis and viable cell number counting methods. With the combination treatment of 10 μg/mL CDots with 8.82 mM H2O2, the viable E.coli cell numbers decreased 2.46 log, which was significant lower than the log reduction from 8.82 mM H2O2 (1.57 log) or 10 μg/mL CDots (0.14 log) treatment alone. However, the combination of CDots with Na2CO3 or AcOH did not show synergistic effects, instead, exhibiting indifference effects according to the FIC index. This study indicated that the combination of CDots with their synergistic antimicrobial reagents, such as H2O2, could reach the goal of inhibiting bacteria growth by using lower concentration of each individual chemical in the combination than using one chemical treatment alone, reduce the risks imposed on environmental health and the possibilities of the development of microbial resistances.
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Affiliation(s)
- Xiuli Dong
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
| | - Mohamad Al Awak
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
| | - Nicholas Tomlinson
- Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina, United States of America
| | - Yongan Tang
- Department of Mathematics and Physics, North Carolina Central University, Durham, North Carolina, United States of America
| | - Ya-Ping Sun
- Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina, United States of America
| | - Liju Yang
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
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40
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Bian W, Wang X, Wang Y, Yang H, Huang J, Cai Z, Choi MMF. Boron and nitrogen co-doped carbon dots as a sensitive fluorescent probe for the detection of curcumin. LUMINESCENCE 2017; 33:174-180. [DOI: 10.1002/bio.3390] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 07/25/2017] [Accepted: 08/01/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Wei Bian
- School of Basic Medical Science; Shanxi Medical University; Taiyuan People's Republic of China
| | - Xuan Wang
- College of Pharmacy; Shanxi Medical University; Taiyuan People's Republic of China
| | - Yakun Wang
- College of Pharmacy; Shanxi Medical University; Taiyuan People's Republic of China
| | - Haifen Yang
- College of Pharmacy; Shanxi Medical University; Taiyuan People's Republic of China
| | - Jialin Huang
- School of Basic Medical Science; Shanxi Medical University; Taiyuan People's Republic of China
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis; Hong Kong Baptist University; Kowloon Tong Hong Kong SAR People's Republic of China
| | - Martin M. F. Choi
- Acadia Divinity College; Acadia University; Wolfville Nova Scotia Canada
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41
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Patil SK, Awale DV, Vadiyar MM, Patil SA, Bhise SC, Gore AH, Kolekar GB, Kim JH, Kolekar SS. Amide Functionalized Ionic Liquid as Facile Fluorescent Probe for Detection of Nitrophenolic Compounds. ChemistrySelect 2017. [DOI: 10.1002/slct.201700611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sandip K. Patil
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
| | - Deepak V. Awale
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
| | - Madagonda M. Vadiyar
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
| | - Suryakant A. Patil
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
| | - Sagar C. Bhise
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
| | - Anil H. Gore
- Fluorescence Spectroscopy Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur- 416004, MS India
| | - Govind B. Kolekar
- Fluorescence Spectroscopy Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur- 416004, MS India
| | - Jin H. Kim
- Department of Materials Science and Engineering and Optoelectronics Convergence Research Centre; Chonnam National University; 300, Yongbong-Dong, Buk-Gu Gwangju 500-757 South Korea
| | - Sanjay S. Kolekar
- Analytical Chemistry and Material Science Research Laboratory; Department of Chemistry; Shivaji University; Kolhapur 416004, MS India
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42
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Feyisa Bogale R, Chen Y, Ye J, Zhang S, Li Y, Liu X, Zheng T, Rauf A, Ning G. A terbium(iii)-based coordination polymer for selective and sensitive sensing of nitroaromatics and ferric ion: synthesis, crystal structure and photoluminescence properties. NEW J CHEM 2017. [DOI: 10.1039/c7nj02492d] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Tb(iii)-based coordination polymer has been synthesized and it is a visually selective and sensitive sensor for the detection of 4-nitrophenol and Fe3+ ion.
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Affiliation(s)
- Raji Feyisa Bogale
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Yanzhen Chen
- Dalian Marine Environment Monitor Central Station, State Oceanic Administration
- Dalian
- P. R. China
| | - Junwei Ye
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Siqi Zhang
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Yiwen Li
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Xigang Liu
- Dalian Marine Environment Monitor Central Station, State Oceanic Administration
- Dalian
- P. R. China
| | - Ting Zheng
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Abdul Rauf
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
| | - Guiling Ning
- State Key Laboratory of Fine Chemicals and School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology
- Dalian
- P. R. China
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43
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Joseph J, Anappara AA. Cool white, persistent room-temperature phosphorescence in carbon dots embedded in a silica gel matrix. Phys Chem Chem Phys 2017; 19:15137-15144. [DOI: 10.1039/c7cp02731a] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Cool white room temperature phosphorescence emission of carbon dots embedded in a silica gel matrix.
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Affiliation(s)
- Julin Joseph
- Department of Physics
- National Institute of Technology Calicut
- India
| | - Aji A. Anappara
- Department of Physics
- National Institute of Technology Calicut
- India
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44
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Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots. Biosens Bioelectron 2016; 87:46-52. [PMID: 27517737 DOI: 10.1016/j.bios.2016.08.010] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 07/25/2016] [Accepted: 08/03/2016] [Indexed: 11/22/2022]
Abstract
A new type of cobalt(II)-doped carbon dots (CCDs) have been fabricated and used successfully for sensing Cr(VI) ions on the basis of photoluminescence quenching. The structural characterization of as-obtained CCDs was thoroughly performed by transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and X-ray photoelectron (XPS) spectroscopy. The optical properties were also determined by absorption and fluorescence spectra. By recording 3D fluorescence spectrum, a unique intra-particle Förster resonance energy transfer (FRET) system was investigated. In addition, fluorescence quenching of CCDs was observed in the presence of Cr(VI) ions due to inner filter effect. A good linear relationship between the concentration of Cr(VI) ions and fluorescent intensity was obtained in the range from 5μM to 125μM (R2=0.99), and the limit of detection was calculated as 1.17μM (0.12ppm for Cr(VI)). Importantly, this method was capable of rapidly detecting Cr(VI) ions in tap water and fish samples, which may be helpful in risk reduction of intake Cr(VI) contamination from water and seafood.
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45
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Chen S, Chen X, Xia T, Ma Q. A novel electrochemiluminescence sensor for the detection of nitroaniline based on the nitrogen-doped graphene quantum dots. Biosens Bioelectron 2016; 85:903-908. [PMID: 27311116 DOI: 10.1016/j.bios.2016.06.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/19/2016] [Accepted: 06/06/2016] [Indexed: 01/24/2023]
Abstract
Nitrogen-doped graphene quantum dots (N-GQDs), as a new class of carbon nanomaterials, have potential application in sensor, fuel cells, optoelectronics field due to their stable photoluminescence (PL) and electrocatalytic activity. Herein, a facile novel electrochemiluminescence (ECL) signal-on method for nitroaniline (NA) sensing based on N-GQDs and chitosan was developed. Chitosan displays high water permeability, hydrophilic property and good adhesion to load the N-GQDs to the glassy carbon electrode (GCE) surface. N-GQDs have shown as highly active reagent and catalyst for rapid diazotization reaction of anilines. When NA was added to the electrolyte solution consisting of mineral acid and sodium nitrite, N-GQDs/chitosan modified electrode exhibited obvious enhancement of ECL intensity, which was ascribed to the occurrence of diazotization reaction of NA. Therefore, NA can be detected with high selectivity based on the N-GQDs/chitosan ECL system. To the best of our knowledge, it is the first report about the NA detection based on the catalysis and ECL capabilities of N-GQDs. There was a wide linear ECL intensity response ranging from 0.01 to 1μmolL(-1) NA. The practicability of the ECL sensing platform in real water samples has shown the satisfactory results.
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Affiliation(s)
- Shufan Chen
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Xueqian Chen
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Tingting Xia
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
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