Issue 22, 2012
From the journal:

Analyst

Highly sensitive label-free colorimetric sensing of nitrite based on etching of gold nanorods†

Zhaopeng Chen,*a   Zhiyang Zhang,ab   Chengli Qu,a   Dawei Pana  and  Lingxin Chen*a  

* Corresponding authors

a Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China
E-mail: zhpchen@yic.ac.cn, lxchen@yic.ac.cn
Fax: +86 535 2109133
Tel: +86 535 2109133

b Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

A simple colorimetric method with high sensitivity and selectivity was developed for sensing of nitrite as low as 4.0 μM by naked eyes, which is based on etching of gold nanorods accompanied by shape changes in aspect ratios (length/width) and a visible color change from bluish green to red and then to colorless with the increase of nitrite.

Graphical abstract: Highly sensitive label-free colorimetric sensing of nitrite based on etching of gold nanorods

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Article information

DOI
https://doi.org/10.1039/C2AN35787A
Article type
Communication
Submitted
12 Jun 2012
Accepted
01 Sep 2012
First published
03 Sep 2012

Analyst, 2012,137, 5197-5200

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Highly sensitive label-free colorimetric sensing of nitrite based on etching of gold nanorods

Z. Chen, Z. Zhang, C. Qu, D. Pan and L. Chen, Analyst, 2012, 137, 5197 DOI: 10.1039/C2AN35787A

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