Electrochromism in multichromic conjugated polymers: Thiophene and azobenzene derivatives on the main chain


Apaydin D. H. , Akpinar H., Sendur M., TOPPARE L. K.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, vol.665, pp.52-57, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 665
  • Publication Date: 2012
  • Doi Number: 10.1016/j.jelechem.2011.11.016
  • Title of Journal : JOURNAL OF ELECTROANALYTICAL CHEMISTRY
  • Page Numbers: pp.52-57
  • Keywords: Azobenzene, Multichromism, Donor-acceptor-donor, Conjugated polymer, LIQUID-CRYSTALLINE POLYMER, OPTICAL-PROPERTIES, AZO, UNITS

Abstract

Novel donor-acceptor-donor type polymers containing azobenzene group in polymer backbone chains were synthesized and their electrochromic properties were investigated. To increase the strength of the acceptor unit, fluorinated azobenzene containing donor-acceptor-donor type polymer was also synthesized. Cyclic voltammetry and spectroelectrochemistry studies showed that poly((E)-1,2-bis(4-(4-hexylthiophen-2-yl)phenyl)diazene) (P2) and poly((E)-1,2-bis(2-fluoro-4-(4-hexylthiophen-2-yl)phenyl) diazene) (P3) were multichromic and the polymer containing fluorine group showed p- and n-doping properties, hence they are promising candidates for various applications. (C) 2011 Elsevier B.V. All rights reserved.