Syntheses and Optoelectronic Properties of Quinoxaline Polymers: The Effect of Donor Unit


Sendur M., Balan A., Baran D., TOPPARE L. K.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.49, no.18, pp.4065-4070, 2011 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 18
  • Publication Date: 2011
  • Doi Number: 10.1002/pola.24849
  • Journal Name: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.4065-4070
  • Keywords: conducting polymers, conjugated polymers, donor-acceptor theory, electrochemistry, electrochromism, p- and n-doping, quinoxaline derivative, redox polymers, CONJUGATED POLYMERS, COPOLYMERS, PYRROLE, BANDGAP, GREEN

Abstract

Tuning the bandgap of electrochromic polymers is one of the important research topics in electrochromism. To understand clearly the effect of donor unit in donor-acceptor-donor-type polymers, 2,3-bis(4-tert-butylphenyl)-5,8-di(thiophen-2-yl)quinoxaline and 2,3-bis(4-tert-butylphenyl)-5-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-8-(thiophen-2-yl)quinoxaline were synthesized and polymerized potentiodynamically. Their electrochemical and spectroelectrochemical studies were performed, and the results were compared with those of poly(2,3-bis(4-tert-butylphenyl)-5,8-bis(2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-yl)quinoxaline) (Gunbas et al., Adv Mater 2008, 20, 691-695). A blue shift in the polymer pi-pi* transitions revealed that the bandgap of such polymers with the same acceptor unit is related to the electron density of donor units. (C) 2011 Wiley Periodicals, Inc. J PolymSci Part A: PolymChem 49: 4065-4070, 2011