The degradation of electrochemically polymerised poly (3-aminophenol) films in sodium hydroxide solutions for the production of microelectrode ensembles

Brendan M. Kennedy; Vincent J. Cunnane

doi:10.1016/j.electacta.2007.12.036

The degradation of electrochemically polymerised poly (3-aminophenol) films in sodium hydroxide solutions for the production of microelectrode ensembles

Brendan M. Kennedy, Vincent J. Cunnane

University of Limerick

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

7 Citations (Scopus)

Abstract

Poly (3-aminophenol) films have been grown electrochemically from solutions of 3-aminophenol at pH 7. These pinhole free films passivate the electrode surface and are less than 10 nm thick. The films are stable in 1 M solutions of sulphuric acid. However, they are rapidly degraded in solutions of sodium hydroxide. It is demonstrated that initially the polymer removal results in the creation of an electrode that exhibits the characteristics of a microelectrode ensemble. However, as further polymer is removed these characteristics are lost and response of the electrode resembles that of a large planar electrode. This chemical treatment of poly (3-aminophenol) films allows for the cost-effective production of microelectrode ensembles.

Original language	English
Pages (from-to)	3620-3625
Number of pages	6
Journal	Electrochimica Acta
Volume	53
Issue number	10
DOIs	https://doi.org/10.1016/j.electacta.2007.12.036
Publication status	Published - 1 Apr 2008

Keywords

3-Aminophenol
Microelectrode ensemble
Pinhole
Polymer

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10.1016/j.electacta.2007.12.036

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AB - Poly (3-aminophenol) films have been grown electrochemically from solutions of 3-aminophenol at pH 7. These pinhole free films passivate the electrode surface and are less than 10 nm thick. The films are stable in 1 M solutions of sulphuric acid. However, they are rapidly degraded in solutions of sodium hydroxide. It is demonstrated that initially the polymer removal results in the creation of an electrode that exhibits the characteristics of a microelectrode ensemble. However, as further polymer is removed these characteristics are lost and response of the electrode resembles that of a large planar electrode. This chemical treatment of poly (3-aminophenol) films allows for the cost-effective production of microelectrode ensembles.

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The degradation of electrochemically polymerised poly (3-aminophenol) films in sodium hydroxide solutions for the production of microelectrode ensembles

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Keywords

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