Platinum-based poly(aryleneethynylene) polymers containing thiazolothiazole group with high hole mobilities for field-effect transistor applications

Lei Yan, Yan Zhao, Xiaohui Wang, Xing Zhu Wang*, Wai Yeung WONG, Yunqi Liu, Weiping Wu, Qingzhen Xiao, Guo Wang, Xuan Zhou, Wei Zeng, Chengxi Li, Xiaoyu Wang, Hongbin Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Two solution-processable platinum-acetylide polymers functionalized with the electron-deficient thiazolothiazole spacer are synthesized and show absorption features spanning from 320 to 600 nm and optical bandgaps of 2.15 and 2.05 eV. The spin-coated polymer thin films of both materials exhibit p-channel field-effect charge transport characteristics with impressive peak field-effect charge-carrier mobilities of (2.1-2.8) × 10 -2 cm 2 V -1 s -1 and on/off ratios of (0.8-1.0) × 10 5 for the holes. The high hole mobility value reported for one of the polymers is among the highest reported for metallopolyynes to date. It is also shown that the hole mobility can be notably increased by extending the conjugation length of the chain from the monothienyl to the bithienyl segment on each side of the thiazolothiazole ring.

Original languageEnglish
Pages (from-to)603-609
Number of pages7
JournalMacromolecular Rapid Communications
Volume33
Issue number6-7
DOIs
Publication statusPublished - 13 Apr 2012

Scopus Subject Areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

User-Defined Keywords

  • acetylide
  • metallopolymer
  • organic field-effect transistors
  • platinum
  • thiazolothiazole

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