Issue 37, 2012
From the journal:

Chemical Communications

Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(iii) in aqueous solution†

Yuangen Wu,ab   Shenshan Zhan,ab   Faze Wang,a   Lan He,a   Wenting Zhia  and  Pei Zhou*a  

* Corresponding authors

a School of Environmental Science and Engineering, and Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, and School of Agriculture and Biology, and Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, China
E-mail: zhoupei@sjtu.edu.cn
Fax: +86-21-34205762
Tel: +86-21-34205762

b Guizhou Province Key Laboratory of Fermentation Engineering and Biopharmacy, Guizhou University, Guiyang, Guizhou, China
Fax: +86-851-4732925
Tel: +86-851-4732861

Abstract

As(III) specifically interacts with an arsenic-binding aptamer to form an As(III)–aptamer complex, so that the following cationic polymer can aggregate gold nanoparticles (AuNPs) and cause a remarkable change in color, which enables the colorimetric detection of As(III) with high selectivity and a detection limit of 5.3 ppb.

Graphical abstract: Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(iii) in aqueous solution

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Article information

DOI
https://doi.org/10.1039/C2CC30384A
Article type
Communication
Submitted
17 Jan 2012
Accepted
15 Mar 2012
First published
15 Mar 2012

Chem. Commun., 2012,48, 4459-4461

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Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(III) in aqueous solution

Y. Wu, S. Zhan, F. Wang, L. He, W. Zhi and P. Zhou, Chem. Commun., 2012, 48, 4459 DOI: 10.1039/C2CC30384A

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