Issue 10, 2012
From the journal:

Analyst

Fluorescent silver nanoclusters for user-friendly detection of Cu2+ on a paper platform†

Xiaojuan Liu,ab   Chenghua Zongab  and  Lehui Lu*a  

* Corresponding authors

a State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
E-mail: lehuilu@ciac.jl.cn
Fax: +86 431-85262406
Tel: +86 431-85262418

b Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China

Abstract

The development of a user-friendly sensing platform for the detection of Cu2+ in water is necessary as there are wide concerns due to the substantial impact of Cu2+ on human health, environmental monitoring, and so on. Motivated by this, we report a fluorescent silver nanoclusters (AgNCs)-based sensor for the detection of Cu2+. These water-soluble AgNCs, as a new class of fluorescent probes, were synthesized by using azobenzene modified poly(acrylic acid) (MPAA) as templates. Their fluorescence can be quenched in the presence of Cu2+, which enables the label-free detection of Cu2+ in real water samples. Furthermore, such AgNCs can be integrated onto cellulose filter paper and used as fluorescent indicators for Cu2+. The fluorescence quenching can be observed by the naked eye under UV light. It should be noted that this AgNCs-based paper assay performs successfully in barrelled drinking water and river water samples. Therefore, it opens up new avenues to the development of robust clusters-based sensing platforms.

Graphical abstract: Fluorescent silver nanoclusters for user-friendly detection of Cu2+ on a paper platform

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Article information

DOI
https://doi.org/10.1039/C2AN35051C
Article type
Paper
Submitted
11 Jan 2012
Accepted
15 Mar 2012
First published
21 Mar 2012

Analyst, 2012,137, 2406-2414

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Fluorescent silver nanoclusters for user-friendly detection of Cu2+ on a paper platform

X. Liu, C. Zong and L. Lu, Analyst, 2012, 137, 2406 DOI: 10.1039/C2AN35051C

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