Synthesis, characterization, and electrochromic properties of conducting poly(hexanedioic acid bis-(2-thiophen-3-yl-ethyl ester) and its copolymer with thiophene


SYNTHETIC METALS, vol.146, no.1, pp.91-97, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 146 Issue: 1
  • Publication Date: 2004
  • Doi Number: 10.1016/j.synthmet.2004.06.010
  • Journal Name: SYNTHETIC METALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.91-97
  • Keywords: electrochemical polymerization, conducting copolymers, electrochromic properties, FILMS, POLYTHIOPHENE
  • Akdeniz University Affiliated: No


Hexanedioic acid bis-(2-thiophen-3-yl-ethyl) ester (HABTE) was synthesized via the reaction of 3-thiophene ethanol with adipoyl chloride. Resulting monomer was electrochemically homopolymerized in the presence of tetrabutylammonium tetrafluoroborate as the supporting electrolyte, in acetonitrile/borontrifloride ethylether solvent mixture (8:2, v/v). Copolymerization in the presence of thiophene was achieved in TBAFB/AN. Resulting homo and copolymers were characterized via CV, FTIR, DSC, TGA, SEM, and UV-vis Spectroscopy. Spectroelectrochemistry analysis of homopolymer, P(HABTE), reflected electronic transitions at 385, 600, and 900 nm, revealing pi-pi* transition, polaron, and bipolaron band formation, respectively. Switching ability of the homopolymer was evaluated by a kinetic study upon measuring the %T at the maximum contrast point, indicating that PHABTE is a potential material for electrochromic devices. (C) 2004 Elsevier B.V. All rights reserved.