Electrochromic behavior of poly(3,5-bis(4-bromophenyl)dithieno[3,2- b;2′,3′-d]thiophene)

Ipek Osken, Hakan Bildirir, Turan Ozturk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Electropolymerization of 3,5-bis(4-bromophenyl)dithieno[3,2-b;2′, 3′-d]thiophene, having a mild electron-withdrawing bromine atom attached to the para position of the two phenyl groups of dithienothiophene, was performed, utilizing a potentiodynamic method. The resultant homopolymer was characterized by cyclic volyammetry, fourier transform infrared and ultraviolet-visible spectroscopy. Spectroelectrochemical and electrochromic properties were investigated and a device was constructed with polyethylenedioxythiophene to understand the characteristics in detail, which had the potential range of 0.0-2.0 V for operating the device between green and blue colors. It had a good optical contrast of 18% with a switching time of less than a second. Moreover, open circuit memory and stability of the device were investigated.

Original languageEnglish
Pages (from-to)7707-7711
Number of pages5
JournalThin Solid Films
Volume519
Issue number22
DOIs
Publication statusPublished - 1 Sept 2011

Keywords

  • Dithienothiophenes
  • Electrochromic materials
  • Optical properties
  • Voltammetry

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