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Nucleation and growth of poly(3,4-ethylenedioxythiophene) thin films on highly oriented pyrolytic graphite (HOPG) electrodes

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Ventosa, Edgar, Palacios, Jesus Lopez and Unwin, Patrick R. (2008) Nucleation and growth of poly(3,4-ethylenedioxythiophene) thin films on highly oriented pyrolytic graphite (HOPG) electrodes. Electrochemistry Communications, Vol.10 (No.11). pp. 1752-1755. doi:10.1016/j.elecom.2008.09.003

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Official URL: http://dx.doi.org/10.1016/j.elecom.2008.09.003

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Abstract

The electro-polymerization of 3,4-ethylenedioxythiophene (EDOT) on highly oriented pyrolytic graphite (HOPG) in aqueous media has been investigated by current-time transient measurements and atomic force microscopy. Deposition involved an initial step, in which the whole electrode was essentially covered with an increasing number of nuclei. This first step occurred at very short times (less than 3 ms at high driving force) and was followed by further growth, the nature of which depended on the magnitude of the applied potential. At high driving force, a progressive 3D mechanism took place, while a 2D layer-by-layer process was observed at low driving force. These observations provide a simple means of controlling the morphology of electrodeposited poly(3,4-ethylenedioxythiophene). (C) 2008 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Chemistry
Journal or Publication Title: Electrochemistry Communications
Publisher: Elsevier Inc.
ISSN: 1388-2481
Official Date: November 2008
Dates:
DateEvent
November 2008Published
Volume: Vol.10
Number: No.11
Number of Pages: 4
Page Range: pp. 1752-1755
DOI: 10.1016/j.elecom.2008.09.003
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

Data sourced from Thomson Reuters' Web of Knowledge

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