Fine tuning of color via copolymerization and its electrochromic device application

ÇAMURLU P., Sahmetlioglu E., Sahin E., Akhmedov I. M., TANYELİ C., Toppare L.

THIN SOLID FILMS, vol.516, no.12, pp.4139-4144, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 516 Issue: 12
  • Publication Date: 2008
  • Doi Number: 10.1016/j.tsf.2007.10.098
  • Journal Name: THIN SOLID FILMS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4139-4144
  • Keywords: electrochemical copolymerization, 1-(perfluorophenyl)-2,5-di(thiophen-2-yi)-1H-pyrrole, 3,4-ethylenedioxythiophene, multichromism, electrochromic devices, CONDUCTING POLYMER
  • Middle East Technical University Affiliated: Yes


In this study electrochemical copolymerization of 1-(perfluorophenyl)-2,5-di(thiophen-2-yl)-1H-pyrrole and 3,4-ethylenedioxythiophene was used to fulfill a strategy in achieving desired multichromic properties. The resultant polymer displayed distinct color changes between red-violet, amber, green and blue color with good switching times and optical contrast. A direct correlation between the color of the polymer in neutral state and the applied potential during synthesis was observed. Hence, it was possible to achieve colors from maroon, red-violet, and eggplant to indigo depending on the applied potential. A dual type electrochromic device of the copolymer and poly(3,4-ethylenedioxythiophene) was constructed to evaluate the possible use of such copolymer in device applications. The device displayed multichromism, with 1.1 s switching time and good electrochromic memory. (C) 2007 Elsevier B.V. All rights reserved.