Silver(I) ions and cysteine detection based on photoinduced electron transfer mediated by cytosine–Ag+–cytosine base pairs

Wan Yi Xie; Wei Tao Huang; Nian Bing Li; Hong Qun Luo

doi:10.1039/C1AN15522A

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Silver(i) ions and cysteine detection based on photoinduced electron transfer mediated by cytosine–Ag⁺–cytosine base pairs†

Wan Yi Xie,^a Wei Tao Huang,^a Nian Bing Li*^a and Hong Qun Luo*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, P.R.China
E-mail: linb@swu.edu.cn, luohq@swu.edu.cn
Fax: +86-23-68253237
Tel: +86-23-68253237

Abstract

Upon formation of cytosine–Ag⁺–cytosine base pairs as a mediator for the photoinduced electron transfer, the fluorescence of FAM-labeled DNA was quenched and the fluorescence emission wavelength exhibited a red shift. Based on these phenomena a novel dual-output fluorescent DNA sensor for Ag⁺ ions and cysteine detection was developed.

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Article information

DOI: https://doi.org/10.1039/C1AN15522A
Article type: Communication
Submitted: 23 Jun 2011
Accepted: 01 Aug 2011
First published: 24 Aug 2011

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Analyst, 2011,136, 4130-4133

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Silver(I) ions and cysteine detection based on photoinduced electron transfer mediated by cytosine–Ag⁺–cytosine base pairs

W. Y. Xie, W. T. Huang, N. B. Li and H. Q. Luo, Analyst, 2011, 136, 4130 DOI: 10.1039/C1AN15522A

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