Donor-acceptor-donor type conjugated polymers for electrochromic applications: Benzimidazole as the acceptor unit

Hava Akpinar, Abidin Balan, Derya Baran, Elif Köse Ünver, Levent Toppare*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

Donor-acceptor-donor (DAD) type benzimidazole (BIm) and 3,4 ethylenedioxythiophene (EDOT) bearing monomers were synthesized and electrochemically polymerized. Pendant group at 2-C position of the imidazole ring was functionalized with phenyl (P1), EDOT (P2) and ferrocene (P3) in order to observe substituent effect on electrochemical and electrochromic properties of corresponding polymers. Spectroelectrochemical results showed that different pendant groups resulted in polymers with slightly different optical band gaps (1.75, 1.69 and 1.77 eV respectively) and different number of achievable colored states. Optoelectronic performance and comparison of results with other well known π-accepting benzazole bearing DAD type polymers were reported in detail.

Original languageEnglish (US)
Pages (from-to)6123-6131
Number of pages9
JournalPolymer
Volume51
Issue number26
DOIs
StatePublished - Dec 10 2010

Keywords

  • Benzimidazole
  • Donor-acceptor approach
  • Electrochromism

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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