On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR

doi:10.1021/acsanm.1c00921

	On-Off-On Fluorescent Chemosensors Based on N/P-Codoped Carbon Dots for Detection of Microcystin-LR
	Wang, Xiaoyan 3; Yu, Jialuo 1,2; Ji, Wan 3; Arabi, Maryam 1,2; Fu, Longwen1,2 ; Li, Bowei1,2 ; Chen, Lingxin1,2,3
发表期刊	ACS APPLIED NANO MATERIALS
ISSN	2574-0970
	2021-07-23
卷号	4 期号:7 页码:6852-6860
关键词	carbon dots microcystin-LR fluorescent chemosensors "on-off-on" mode indirect chemosensing
DOI	10.1021/acsanm.1c00921
通讯作者	Wang, Xiaoyan(wangxy@yic.ac.cn) ; Chen, Lingxin(lxchen@yic.ac.cn)
英文摘要	The 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.
资助机构	National 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
收录类别	SCI
语种	英语
关键词[WOS]	GRAPHENE QUANTUM DOTS ; SENSITIVE DETECTION ; ADENOSINE-TRIPHOSPHATE ; NITROGEN ; REMOVAL ; PROBE ; FE3+ ; NANOPARTICLES ; SENSORS ; ELISA
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science
WOS记录号	WOS:000677582900036
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/29540
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
通讯作者	Wang, Xiaoyan; Chen, Lingxin
作者单位	1.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
推荐引用方式 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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