Issue 10, 2011
From the journal:

Analyst

Highly sensitive and selective detection of silver(i) ion using nano-C60 as an effective fluorescent sensing platform†

Hailong Li,ab   Junfeng Zhaia  and  Xuping Sun*a  

* Corresponding authors

a State Key Lab of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 Jilin, China
E-mail: sunxp@ciac.jl.cn
Fax: (+86) 431-85262065
Tel: (+86) 431-85262065

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

Abstract

In this Communication, we report water-soluble nano-C60 in the first use as an effective fluorescent sensing platform for the highly sensitive and selective detection of Ag+. The general concept used in this approach is based on a fluorescently labeled single-stranded DNA (ssDNA) probe that adsorbs on nano-C60, leading to substantial dye fluorescence quenching; however, in the presence of Ag+, C–Ag+–C coordination induces the probe to fold into a hairpin structure, which does not adsorb on nano-C60 and thus retains the dye fluorescence. This sensing system exhibits a detection limit as low as 1 nM and has a high selectivity against other metal ions. Finally and most importantly, we demonstrate its performance in real sample analysis.

Graphical abstract: Highly sensitive and selective detection of silver(i) ion using nano-C60 as an effective fluorescent sensing platform

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Article information

DOI
https://doi.org/10.1039/C1AN15050B
Article type
Communication
Submitted
20 Jan 2011
Accepted
11 Mar 2011
First published
28 Mar 2011

Analyst, 2011,136, 2040-2043

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Highly sensitive and selective detection of silver(I) ion using nano-C60 as an effective fluorescent sensing platform

H. Li, J. Zhai and X. Sun, Analyst, 2011, 136, 2040 DOI: 10.1039/C1AN15050B

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