A selective dopamine biosensor based on AgCl@polyaniline core-shell nanocomposites

Wei Yan; Xiaomiao Feng; Xiaojun Chen; Xinghua Li; Jun Jie Zhu

doi:10.1016/j.bioelechem.2007.07.003

A selective dopamine biosensor based on AgCl@polyaniline core-shell nanocomposites

Wei Yan, Xiaomiao Feng, Xiaojun Chen, Xinghua Li, Jun Jie Zhu

Nanjing University

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

Silver chloride@polyaniline (PANI) core-shell (AgCl@PANI) nanocomposites were synthesized in the presence of polyvinylpyrrolidone (PVP). The obtained AgCl@PANI nanocomposites could be easily dispersed in aqueous media, which overcame the processible issues of PANI. Moreover, the nanocomposites showed excellent electrochemical behavior at pH neutral environment, and had inhibitive effect on oxidation of ascorbic acid. Fourier transform infrared spectrophotometry (FTIR) confirmed the existence of PVP in the nanocomposites. The C = O group of PVP is easy to form hydrogen bonding with the hydroxyl group of ascorbic acid, which can prevent ascorbic acid from oxidization. A selective dopamine biosensor was constructed based on the particular characteristic of the AgCl@PANI nanocomposites by the simple drop-coating. The biosensor could detect dopamine at its very low concentration in the presence of 5000 time concentration of ascorbic acid at neutral environment.

Original language	English
Pages (from-to)	21-27
Number of pages	7
Journal	Bioelectrochemistry
Volume	72
Issue number	1
DOIs	https://doi.org/10.1016/j.bioelechem.2007.07.003
State	Published - Feb 2008
Externally published	Yes

Keywords

AgCl@polyaniline (PANI) core-shell nanocomposites
Ascorbic acid
Dopamine
Electrochemical
Glassy carbon electrode

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10.1016/j.bioelechem.2007.07.003

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title = "A selective dopamine biosensor based on AgCl@polyaniline core-shell nanocomposites",

abstract = "Silver chloride@polyaniline (PANI) core-shell (AgCl@PANI) nanocomposites were synthesized in the presence of polyvinylpyrrolidone (PVP). The obtained AgCl@PANI nanocomposites could be easily dispersed in aqueous media, which overcame the processible issues of PANI. Moreover, the nanocomposites showed excellent electrochemical behavior at pH neutral environment, and had inhibitive effect on oxidation of ascorbic acid. Fourier transform infrared spectrophotometry (FTIR) confirmed the existence of PVP in the nanocomposites. The C = O group of PVP is easy to form hydrogen bonding with the hydroxyl group of ascorbic acid, which can prevent ascorbic acid from oxidization. A selective dopamine biosensor was constructed based on the particular characteristic of the AgCl@PANI nanocomposites by the simple drop-coating. The biosensor could detect dopamine at its very low concentration in the presence of 5000 time concentration of ascorbic acid at neutral environment.",

keywords = "AgCl@polyaniline (PANI) core-shell nanocomposites, Ascorbic acid, Dopamine, Electrochemical, Glassy carbon electrode",

author = "Wei Yan and Xiaomiao Feng and Xiaojun Chen and Xinghua Li and Zhu, {Jun Jie}",

year = "2008",

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doi = "10.1016/j.bioelechem.2007.07.003",

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AU - Feng, Xiaomiao

AU - Chen, Xiaojun

AU - Li, Xinghua

AU - Zhu, Jun Jie

PY - 2008/2

Y1 - 2008/2

N2 - Silver chloride@polyaniline (PANI) core-shell (AgCl@PANI) nanocomposites were synthesized in the presence of polyvinylpyrrolidone (PVP). The obtained AgCl@PANI nanocomposites could be easily dispersed in aqueous media, which overcame the processible issues of PANI. Moreover, the nanocomposites showed excellent electrochemical behavior at pH neutral environment, and had inhibitive effect on oxidation of ascorbic acid. Fourier transform infrared spectrophotometry (FTIR) confirmed the existence of PVP in the nanocomposites. The C = O group of PVP is easy to form hydrogen bonding with the hydroxyl group of ascorbic acid, which can prevent ascorbic acid from oxidization. A selective dopamine biosensor was constructed based on the particular characteristic of the AgCl@PANI nanocomposites by the simple drop-coating. The biosensor could detect dopamine at its very low concentration in the presence of 5000 time concentration of ascorbic acid at neutral environment.

AB - Silver chloride@polyaniline (PANI) core-shell (AgCl@PANI) nanocomposites were synthesized in the presence of polyvinylpyrrolidone (PVP). The obtained AgCl@PANI nanocomposites could be easily dispersed in aqueous media, which overcame the processible issues of PANI. Moreover, the nanocomposites showed excellent electrochemical behavior at pH neutral environment, and had inhibitive effect on oxidation of ascorbic acid. Fourier transform infrared spectrophotometry (FTIR) confirmed the existence of PVP in the nanocomposites. The C = O group of PVP is easy to form hydrogen bonding with the hydroxyl group of ascorbic acid, which can prevent ascorbic acid from oxidization. A selective dopamine biosensor was constructed based on the particular characteristic of the AgCl@PANI nanocomposites by the simple drop-coating. The biosensor could detect dopamine at its very low concentration in the presence of 5000 time concentration of ascorbic acid at neutral environment.

KW - AgCl@polyaniline (PANI) core-shell nanocomposites

KW - Ascorbic acid

KW - Dopamine

KW - Electrochemical

KW - Glassy carbon electrode

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ER -

A selective dopamine biosensor based on AgCl@polyaniline core-shell nanocomposites

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Keywords

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