Issue 32, 2010
From the journal:

Journal of Materials Chemistry

Graphene-DNA hybrids: self-assembly and electrochemical detection performance

Wei Lv,a   Min Guo,a   Ming-Hui Liang,b   Feng-Min Jin,a   Lan Cui,c   Linjie Zhib  and  Quan-Hong Yang*a  

* Corresponding authors

a Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
E-mail: qhyangcn@tju.edu.cn

b National Center for Nanoscience and Technology of China, Beijing 100190, China
E-mail: zhilj@nanoctr.cn

c Analysis Center of Tianjin University, Tianjin University, Tianjin 300072, China

Abstract

Graphene combines with single-stranded DNA by a self-assembly process under strong ultrasonication and in the resulting water-dispersible graphene-DNA hybrids, monolayers of globular ss-DNA molecules are adsorbed on both sides of the graphene sheets by a non-covalent π–π stacking. The cyclic voltammetry results of the graphene-DNA hybrids coated electrodes demonstrate a well-defined and nearly symmetrical redox characteristic which means an enhanced electron transfer on the electrode surface as compared to the uncoated glassy carbon electrodes. Accordingly, the coated ones show apparently better sensing performance towards hydrogen peroxide which is characterized by large detection range, rapid response and high sensitivity.

Graphical abstract: Graphene-DNA hybrids: self-assembly and electrochemical detection performance

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Article information

DOI
https://doi.org/10.1039/C0JM01066A
Article type
Paper
Submitted
16 Apr 2010
Accepted
11 May 2010
First published
30 Jun 2010

J. Mater. Chem., 2010,20, 6668-6673

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Graphene-DNA hybrids: self-assembly and electrochemical detection performance

W. Lv, M. Guo, M. Liang, F. Jin, L. Cui, L. Zhi and Q. Yang, J. Mater. Chem., 2010, 20, 6668 DOI: 10.1039/C0JM01066A

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