Miao, Qinglan1; Qi, Ji2; Li, Yuanyuan1; Fan, Xinxia1; Deng, Dongmei1; Yan, Xiaoxia1; He, Haibo1; Luo, Liqiang1
发表期刊ANALYST
ISSN0003-2654
2021-10-11
卷号146期号:20页码:6297-6305
DOI10.1039/d1an01268a
通讯作者Deng, Dongmei(dmdeng@shu.edu.cn); Luo, Liqiang(luck@shu.edu.cn)
英文摘要In this work, zinc-doped carbon dots (Zn-CDs) were anchored on a three-dimensional wheel type paper-based microfluidic chip, and were decorated with 6-mercaptonicotinic acid (MNA) and l-cysteine (l-Cys) for highly sensitive and rapid fluorescence detection of Cu2+. Zn-CDs were first anchored on paper through the amide bonds between the carboxyl groups of the Zn-CDs and the amino groups of the paper. Afterwards, Zn-CDs were decorated with MNA and l-Cys, effectively preventing the Zn-CDs from aggregation. The nitrogen atom on the pyridine ring and the carboxylic acid groups in MNA and l-Cys coordinated with Cu2+ to form a nonfluorescent ground-state complex, causing the fluorescence quenching of the Zn-CDs. The three-dimensional rotary design could simplify the operation process and achieve simultaneous analysis of multiple samples with different concentrations. Under optimal conditions, the fluorescent sensor exhibits linear response for the determination of Cu2+ in the range from 0.1 to 60 mu g L-1 with the detection limit (LOD) of 0.018 mu g L-1. The proposed strategy provides a novel way for the highly sensitive detection of Cu2+ in a complex water environment.
资助机构National Natural Science Foundation of China; China Postdoctoral Science Foundation
收录类别SCI
语种英语
关键词[WOS]QUANTUM DOTS; SELECTIVE DETECTION; COLORIMETRIC DETECTION; CU2+ IONS; SENSOR; HG2+; NANOPARTICLES; CYSTEINE; PROBE
研究领域[WOS]Chemistry
WOS记录号WOS:000697787500001
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29798
专题中科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Deng, Dongmei; Luo, Liqiang作者单位1.Shanghai Univ, Coll Sci, Shanghai 200444, Peoples R China
2.Chinese Acad Sci, Res Ctr Coastal Environm Engn & Technol, Yantai Inst Coastal Zone Res,Shandong Prov Key La, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714Miao, Qinglan,Qi, Ji,Li, Yuanyuan,et al. Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions[J]. ANALYST,2021,146(20):6297-6305.
APAMiao, Qinglan.,Qi, Ji.,Li, Yuanyuan.,Fan, Xinxia.,Deng, Dongmei.,...&Luo, Liqiang.(2021).Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions.ANALYST,146(20),6297-6305.
MLAMiao, Qinglan,et al."Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions".ANALYST 146.20(2021):6297-6305.
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