Issue 3, 2012
From the journal:

Analytical Methods

Visual detection of copper(ii) based on the aggregation of gold nano-particles via click chemistry

Zhenyu Lin,*a   Sen Gao,a   Jing Lin,a   Wenlie Lin,b   Suyan Qiu,a   Longhua Guo,a   Bin Qiua  and  Guonan Chen*a  

* Corresponding authors

a Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian, China
E-mail: zylin@fzu.edu.cn, gnchen@fzu.edu.cn
Fax: +86-591-22866135

b Yanchang Oil field Corp. Ltd, Shanxi, China

Abstract

A novel, highly sensitive and selective colorimetric method for copper(II) detection through copper(I) catalyzed alkyne–azide cycloaddition reaction (CuAAC) has been developed. Copper(I) is produced by the electrochemical reduction of copper(II) via Bulk Electrolysis (BE) with coulometry. The azide- and alkyne-functionalized Au nanoparticles (AuNPs) can aggregate quickly (10 min) through CuAAC reaction, resulting in the color of the solution changing from red to purple. Furthermore, the change of color is closely related to the concentration of copper(II), and 1 nM copper(II) could be detected by the naked eye. Additionally, the proposed method has good selectivity to copper(II) in the presence of other common metal ions.

Graphical abstract: Visual detection of copper(ii) based on the aggregation of gold nano-particles via click chemistry

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Article information

DOI
https://doi.org/10.1039/C2AY05765D
Article type
Communication
Submitted
09 Nov 2011
Accepted
18 Jan 2012
First published
07 Feb 2012

Anal. Methods, 2012,4, 612-615

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Visual detection of copper(II) based on the aggregation of gold nano-particles via click chemistry

Z. Lin, S. Gao, J. Lin, W. Lin, S. Qiu, L. Guo, B. Qiu and G. Chen, Anal. Methods, 2012, 4, 612 DOI: 10.1039/C2AY05765D

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