Electrochromic properties of poly(diphenyldithieno[3,2-b; 2 ',3 '-d]thiophene)

Mert O., Sahin E., Ertas E., Ozturk T., Aydin E. A., Toppare L.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, vol.591, no.1, pp.53-58, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 591 Issue: 1
  • Publication Date: 2006
  • Doi Number: 10.1016/j.jelechem.2006.03.019
  • Journal Name: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.53-58
  • Keywords: electrochromic devices, dithienothiophenes, spectroelectrochemistry, LASER FLASH-PHOTOLYSIS, PHOTOCHEMICAL POLYMERIZATION, DOPED POLYDITHIENOTHIOPHENE, LAWESSONS REAGENT, DITHIENOTHIOPHENES, THIOPHENE, COPOLYMERS
  • Middle East Technical University Affiliated: Yes

Abstract

A conducting polymer of diphenyldithieno[3,2-b;2',3'-d]thiophene (DPhDTT) was synthesized via potentiodynamic method in dichloromethane (DCM)/acetonitrile (AN) (1:9(v/v))-NaClO4/LiClO4 (0.1:0.1 M) solvent-electrolyte couple. Characterizations of the resulting homopolymer were performed by cyclic voltarnmetry (CV), Fourier transform infrared (FTIR) and UV-Vis spectroscopy. Moreover, the spectroelectrochemical and electrochromic properties of the homopolymer films were investigated. Consequently, P(DPhDTT)/PEDOT device was constructed and their characteristics were examined in detail. A potential range of 0.0-2.0 V was found to be suitable for operating the P(DPhDTT)/PEDOT device between yellow and blue colors. The device reveals good open circuit memory and stability. (c) 2006 Elsevier B.V. All rights reserved.