A Camouflage Material: p- and n-Type Dopable Furan Based Low Band Gap Electrochromic Polymer and Its EDOT Based Copolymer

Kavak E., Us C. N., Yavuz E., Kivrak A., İÇLİ ÖZKUT M.

ELECTROCHIMICA ACTA, vol.182, pp.537-543, 2015 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 182
  • Publication Date: 2015
  • Doi Number: 10.1016/j.electacta.2015.09.148
  • Journal Name: ELECTROCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.537-543
  • Keywords: Electrochromism, low band gap polymer, furan, thiadiazolo[3,4-g]quinoxaline, Donor-Acceptor-Donor (D-A-D) approach, ACCEPTOR, DONOR, GREEN, DEVICES, MONOMERS, DESIGN
  • Ankara University Affiliated: No

Abstract

A Donor-Acceptor-Donor (D-A-D) type monomer, 4,9-di(furan-2-yl)-6,7-diphenyl-[1,2,5]thiadiazolo[3,4g] quinoxaline (1), was synthesized via Stille Coupling reaction and polymerized electrochemically. The obtained polymer (P1) has low band gap (0.85 eV) and showed electrochromic property (pale mustard-colored in neutral state, grey in oxidized state and brown in reduced state). Moreover, copolymerization of 1 was carried out with EDOT for the formation of P(1-co-EDOT) which exhibits higher electrochemical stability than its homopolymer (P1) and have intriguing electrochromic property with a color change from the tunes of brown to the tunes of green. The band gap of copolymer was calculated as 1.1 eV. (C) 2015 Elsevier Ltd. All rights reserved.