Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions | |
Miao, Qinglan1; Qi, Ji2; Li, Yuanyuan1; Fan, Xinxia1; Deng, Dongmei1; Yan, Xiaoxia1; He, Haibo1; Luo, Liqiang1 | |
发表期刊 | ANALYST |
ISSN | 0003-2654 |
2021-10-11 | |
卷号 | 146期号:20页码:6297-6305 |
DOI | 10.1039/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.cn/handle/133337/29798 |
专题 | 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 | 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 7714 | Miao, 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. |
APA | Miao, 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. |
MLA | Miao, 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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