Effect of random copolymerization on the optical properties of selenophene and thieno[3,4-c]pyrrole-4,6-dione conjugated polymers


Yasa M., UDUM Y. , TOPPARE L. K.

MICROCHEMICAL JOURNAL, vol.178, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 178
  • Publication Date: 2022
  • Doi Number: 10.1016/j.microc.2022.107395
  • Title of Journal : MICROCHEMICAL JOURNAL
  • Keywords: Conjugated polymers, Thieno[3, 4-c]pyrrole-4, 6-dione, Suzuki Polycondensation, Electrochromism, Band gap, ORGANIC SOLAR-CELLS, CHARGE-TRANSPORT, THIOPHENE, SPACER, THIENOPYRROLEDIONE, ALKYLTHIOPHENE, BITHIAZOLE, EFFICIENCY

Abstract

For the preparation of conjugated polymers having targeted band gaps, absorption, and optoelectronic proper-ties, the Donor-Acceptor (D-A) approach has been one of the most convenient methods. We synthesized four new conjugated polymers, bearing selenophene and thieno[3,4-c]pyrrole-4,6-dione (TPD) for this study via Suzuki Stille Polycondensation. The effect of selenophene that was inserted as pi-bridge and the introduction of a second TPD unit into the polymer backbones through random polymerization were investigated. Optoelectronic prop-erties of the polymers were analyzed via electrochemical and spectroelectrochemical studies. The study reveals the effects of TPD and selenophene moieties on absorption and band gaps of the polymer and provides a concise approach for the preparation of D-A conjugated polymers.