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On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR
Wang, Xiaoyan3; Yu, Jialuo1,2; Ji, Wan3; Arabi, Maryam1,2; Fu, Longwen1,2; Li, Bowei1,2; Chen, Lingxin1,2,3
Keywordcarbon dots microcystin-LR fluorescent chemosensors "on-off-on" mode indirect chemosensing
Corresponding AuthorWang, Xiaoyan(wangxy@yic.ac.cn) ; Chen, Lingxin(lxchen@yic.ac.cn)
AbstractThe sensing of microcystin-LR (MC-LR) as a nonfluorescent species is still challenging since it has a negligible influence on the emission of fluorescent nanomaterials. Herein, a well-defined "on-off-on" indirect chemosensing strategy is developed by means of nitrogen/phosphorus-codoped carbon dots (N/P CDs) for highly sensitive and selective MC-LR determination. The nanoscale N/P CDs were conveniently synthesized by one-step hydrothermal carbonization of adenosine 5'-triphosphate (ATP) in aqueous media. The fluorescence intensity of the N/P CDs was quenched in the presence of Fe3+ due to the formation of Fe-O-P bonds between Fe3+ and the phosphate groups of the N/P CDs. The resulting N/P CD-Fe3+ system was sensitive to MC-LR, and its fluorescence intensity recovered dramatically and quickly since the MC-LR cavity competitively coordinated with Fe3+. Under optimized conditions, the proposed chemosensor exhibited a wide linear response for MC-LR in the range of 0.05-3 mu g/L, with a detection limit down to 17.1 ng/L. Moreover, the chemosensor was successfully applied to accurately detect MC-LR in real water samples and achieved high recoveries in the range of 95.0-109.3%, with relative standard deviations within 1.8-4.7%. By relying on the benefits of fluorescent chemosensors, such as simple operation, low production cost, fast response time, selectivity, and sensitivity, the proposed sensing platform possesses promising applicability for MC-LR determination in complex environmental water samples.
Funding OrganizationNational Natural Science Foundation of China ; Science and Technology Innovation Development Plan of Yantai of China ; Natural Science Foundation of Shandong Province ; Chinese Academy of Sciences President's International Fellowship Initiative ; Taishan Scholar Project Special Funding
Indexed BySCI
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS IDWOS:000677582900036
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, Xiaoyan; Chen, Lingxin
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res,Shandong Key Lab Coa, Res Ctr Coastal Environm Engn & Technol, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
3.Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaoyan,Yu, Jialuo,Ji, Wan,et al. On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR[J]. ACS APPLIED NANO MATERIALS,2021,4(7):6852-6860.
APA Wang, Xiaoyan.,Yu, Jialuo.,Ji, Wan.,Arabi, Maryam.,Fu, Longwen.,...&Chen, Lingxin.(2021).On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR.ACS APPLIED NANO MATERIALS,4(7),6852-6860.
MLA Wang, Xiaoyan,et al."On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR".ACS APPLIED NANO MATERIALS 4.7(2021):6852-6860.
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