Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/70663
Type: Artigo de periódico
Title: Poly[3-(alkyl)thiophene] derivatives as promising materials for assembling an electrochromic device
Author: Ribeiro, AS
Gazotti, WA
Nogueira, VC
Machado, DA
Dos Santos, PF
De Paoli, MA
Abstract: 3-[omega-(p-methoxyphenoxy)alkyl] thiophenes were synthesized and electrochemically polymerized on ITO/glass electrodes by the potentiostatic method. Short alkyl chains substituted thiophene derivatives are generally difficult to polymerize by electrochemical methods, however, potentiostatic deposition provided homogeneous, stable films. Spectroelectrochemical characterization of the films obtained showed that their color depends on the alkyl chain length attached to the thiophene ring. Among the investigated films, poly {3-[12-(p-methoxyphenoxy)dodecyl]thiophene} presented the best electrochromic properties and was chosen to assemble a solid state electrochromic device using poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) film deposited by spraying on ITO/PET electrodes as complementary electrode and polymer electrolyte. The device presented color variation during ca. 500 charge/discharge cycles and can be assembled under atmospheric conditions. The results obtained show promissing perspectives for its application in electrochromic displays.
Subject: substituted polythiophene
electropolymerization
spectroelectrochemistry
electrochromism
Country: Chile
Editor: Sociedad Chilena De Quimica
Rights: aberto
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.