Issue 21, 2013
From the journal:

Analyst

Amplified fluorescent assay of potassium ions using graphene oxide and a conjugated cationic polymer†

Xiao-Jing Xing,‡a   Ying Zhou,‡a   Xue-Guo Liu,a   Hong-Wu Tang*a  and  Dai-Wen Panga  

* Corresponding authors

a Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), Wuhan Institute of Biotechnology, and State Key Laboratory of Virology, Wuhan University, Wuhan, P. R. China
E-mail: hwtang@whu.edu.cn
Fax: +86 27 68754685
Tel: +86 27 68756759

Abstract

We present a low background, highly selective and amplified fluorescent sensor for potassium ions using graphene oxide (GO) and a cationic conjugated polymer (CCP). This method takes advantage of the phenomenon that the addition of CCP cannot release the dye labeled guanine-rich DNA from the GO surface, and the conformational switch of the guanine-rich DNA from random coil to G-quadruplex induced by the target.

Graphical abstract: Amplified fluorescent assay of potassium ions using graphene oxide and a conjugated cationic polymer

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Article information

DOI
https://doi.org/10.1039/C3AN01282D
Article type
Communication
Submitted
04 Jul 2013
Accepted
06 Aug 2013
First published
08 Aug 2013

Analyst, 2013,138, 6301-6304

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Amplified fluorescent assay of potassium ions using graphene oxide and a conjugated cationic polymer

X. Xing, Y. Zhou, X. Liu, H. Tang and D. Pang, Analyst, 2013, 138, 6301 DOI: 10.1039/C3AN01282D

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