Issue 4, 2013
From the journal:

Analyst

Poly(3,4-ethylenedioxythiophene)-modified Ni/silicon microchannel plate electrode for the simultaneous determination of ascorbic acid, dopamine and uric acid

Shiji Yu,a   Chunhua Luo,*b   Lianwei Wang,a   Hui Peng*a  and  Ziqiang Zhua  

* Corresponding authors

a Key Laboratory of Polarized Materials and Devices, Ministry of Education, East China Normal University, Shanghai, China
E-mail: hpeng@ee.ecnu.edu.cn
Fax: +86 21 54345119
Tel: +86 21 54342726

b National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics of the Chinese Academy of Sciences, Shanghai 200083, China
E-mail: chunhua_luo@hotmail.com
Fax: +86 21 63248028
Tel: +86 21 65318072

Abstract

A Ni/silicon microchannel plate (Ni/Si MCP) electrode modified with poly(3,4-ethylenedioxythiophene) (PEDOT) was successfully fabricated. The analytical performance of prepared electrode for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) was investigated by using cyclic voltammetry and differential pulse voltammetry (DPV). The sensitivities for AA, DA and UA obtained by DPV are 5.39 A m−2 mM−1, 0.054 A m−2 μM−1 and 0.022 A m−2 μM−1, respectively. The calculated detection limits were 10 μM (AA), 1.5 μM (DA) and 2.7 μM (UA). The prepared electrode was successfully applied to the detection of AA, DA and UA in urine samples. The experiments illustrate that Ni/Si MCP is a good electrode material which provides a large surface-to-volume ratio and enhances the selectivity and sensitivity.

Graphical abstract: Poly(3,4-ethylenedioxythiophene)-modified Ni/silicon microchannel plate electrode for the simultaneous determination of ascorbic acid, dopamine and uric acid

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Article information

DOI
https://doi.org/10.1039/C2AN36335F
Article type
Paper
Submitted
17 Sep 2012
Accepted
01 Dec 2012
First published
03 Dec 2012

Analyst, 2013,138, 1149-1155

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Poly(3,4-ethylenedioxythiophene)-modified Ni/silicon microchannel plate electrode for the simultaneous determination of ascorbic acid, dopamine and uric acid

S. Yu, C. Luo, L. Wang, H. Peng and Z. Zhu, Analyst, 2013, 138, 1149 DOI: 10.1039/C2AN36335F

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