Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65212
Type: Artigo de periódico
Title: Electrochromic properties of poly{3-[12-(p-methoxyphenoxy)dodecyl]thiophene}
Author: Ribeiro, AS
Nogueira, VC
dos Santos, PF
De Paoli, MA
Abstract: Poly {3-[12-(p-methoxyphenoxy)dodecyl]thiophene} films with different thickness were potentiostatically deposited on optically transparent glass electrodes using different deposition charges. Their spectroelectrochemical properties were studied as a function of thickness, i.e., deposition charge. Films obtained with a deposition charge of ca. 65 mC cm(-2) presented more stability to a high number of redox cycles (>1000), chromatic contrast of 40% at 725 nm, coulombic efficiency of 80% and good optical memory in the reduced state (E = 0.0 V). The surface morphology of these films was also characterized by atomic force microscopy. Films obtained with a deposition charge less than or equal to65 mC cm(-2) are homogeneous, while above this value the film surface morphology presents roughness and irregularities. Correlation between deposition charge and film thickness was estimated using a rugosimeter and atomic force microscopy experiments. (C) 2004 Elsevier Ltd. All rights reserved.
Subject: substituted polythiophene
electrochromism
spectroelectrochemistry
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.electacta.2003.12.044
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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