Dopamine Detection Using the Selective and Spontaneous Formation of Electrocatalytic Poly(dopamine) Films on Indium-Tin Oxide Electrodes

Byung Kwon Kim; Seonhye Son; Kwangyeol Lee; Haesik Yang; Juhyoun Kwak

doi:10.1002/elan.201100632

Dopamine Detection Using the Selective and Spontaneous Formation of Electrocatalytic Poly(dopamine) Films on Indium-Tin Oxide Electrodes

Byung Kwon Kim, Seonhye Son, Kwangyeol Lee, Haesik Yang, Juhyoun Kwak

Department of Chemistry & Nanoscience

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

18 Scopus citations

Abstract

In this study, we report the simple and sensitive electrochemical detection of dopamine in the presence of excess ascorbic acid. The detection is based on the spontaneous formation of electrocatalytic poly(dopamine) films on bare indium-tin oxide (ITO) electrodes. The poly(dopamine) films are formed by immersing ITO electrodes in a solution of dopamine and ascorbic acid for 10min. Afterwards, the electrocatalytic oxidation of hydrazine is measured using modified electrodes. The electrooxidation current of hydrazine increases with increasing dopamine concentration. This method allows a detection limit of 1nM for dopamine in the presence of 100μM of ascorbic acid.

Original language	English
Pages (from-to)	993-996
Number of pages	4
Journal	Electroanalysis
Volume	24
Issue number	5
DOIs	https://doi.org/10.1002/elan.201100632
State	Published - May 2012

Keywords

Ascorbic acid
Dopamine
Hydrazine
Indium-tin oxide
Poly(dopamine)

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10.1002/elan.201100632

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title = "Dopamine Detection Using the Selective and Spontaneous Formation of Electrocatalytic Poly(dopamine) Films on Indium-Tin Oxide Electrodes",

abstract = "In this study, we report the simple and sensitive electrochemical detection of dopamine in the presence of excess ascorbic acid. The detection is based on the spontaneous formation of electrocatalytic poly(dopamine) films on bare indium-tin oxide (ITO) electrodes. The poly(dopamine) films are formed by immersing ITO electrodes in a solution of dopamine and ascorbic acid for 10min. Afterwards, the electrocatalytic oxidation of hydrazine is measured using modified electrodes. The electrooxidation current of hydrazine increases with increasing dopamine concentration. This method allows a detection limit of 1nM for dopamine in the presence of 100μM of ascorbic acid.",

keywords = "Ascorbic acid, Dopamine, Hydrazine, Indium-tin oxide, Poly(dopamine)",

author = "Kim, {Byung Kwon} and Seonhye Son and Kwangyeol Lee and Haesik Yang and Juhyoun Kwak",

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T1 - Dopamine Detection Using the Selective and Spontaneous Formation of Electrocatalytic Poly(dopamine) Films on Indium-Tin Oxide Electrodes

AU - Kim, Byung Kwon

AU - Son, Seonhye

AU - Lee, Kwangyeol

AU - Yang, Haesik

AU - Kwak, Juhyoun

PY - 2012/5

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N2 - In this study, we report the simple and sensitive electrochemical detection of dopamine in the presence of excess ascorbic acid. The detection is based on the spontaneous formation of electrocatalytic poly(dopamine) films on bare indium-tin oxide (ITO) electrodes. The poly(dopamine) films are formed by immersing ITO electrodes in a solution of dopamine and ascorbic acid for 10min. Afterwards, the electrocatalytic oxidation of hydrazine is measured using modified electrodes. The electrooxidation current of hydrazine increases with increasing dopamine concentration. This method allows a detection limit of 1nM for dopamine in the presence of 100μM of ascorbic acid.

AB - In this study, we report the simple and sensitive electrochemical detection of dopamine in the presence of excess ascorbic acid. The detection is based on the spontaneous formation of electrocatalytic poly(dopamine) films on bare indium-tin oxide (ITO) electrodes. The poly(dopamine) films are formed by immersing ITO electrodes in a solution of dopamine and ascorbic acid for 10min. Afterwards, the electrocatalytic oxidation of hydrazine is measured using modified electrodes. The electrooxidation current of hydrazine increases with increasing dopamine concentration. This method allows a detection limit of 1nM for dopamine in the presence of 100μM of ascorbic acid.

KW - Ascorbic acid

KW - Dopamine

KW - Hydrazine

KW - Indium-tin oxide

KW - Poly(dopamine)

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JO - Electroanalysis

JF - Electroanalysis

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ER -

Dopamine Detection Using the Selective and Spontaneous Formation of Electrocatalytic Poly(dopamine) Films on Indium-Tin Oxide Electrodes

Abstract

Keywords

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