Synthesis of narrow bandgap polymers base on benzobis(thiadiazole) and their application to organic transistor devices

Masashi Mamada, Taisuke Uemura, Ryo Teraoka, Daisuke Kumaki, Shizuo Tokito

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Two newly developed narrow bandgap polymers containing benzobis(thiadiazole) (BBT) have been synthesized using the Stille coupling reaction. The polymers showed absorption in the near infrared region due to strong charge-transfer interactions in the donor-acceptor (D-A) units, suggesting a rigid planarized structure. Although both the HOMO-LUMO levels of the polymers lie close to the work function of gold electrodes, a BBT-quaterthiophene polymer showed only p-type semiconducting behavior. In addition, the dominant charge-carrier type is holes even in BBT-thiazole-thiophene polymers, which consists mainly of acceptor units, and indicates that the thiophene ring in these polymers has a strong influence on the charge transport properties.

Original languageEnglish
Pages (from-to)321-326
Number of pages6
JournalJournal of Photopolymer Science and Technology
Volume27
Issue number3
DOIs
Publication statusPublished - Sep 5 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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