Liquid crystalline π-conjugated copolymers bearing a pyrimidine type mesogenic group

Kohsuke Kawabata, Hiromasa Goto

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Phenylene-thiophene-based liquid crystalline π-conjugated copolymers bearing mesogenic groups as side chains were synthesized via a Stille polycondensation reaction and confirmed to exhibit a nematic liquid crystal phase at appropriate temperatures. The formation of a nematic phase, but not a smectic phase indicates cooperation of the main chain and side chain in the formation of a nematic main-chain/side-chain liquid crystal phase. The generation of polarons in the main chain as charge carriers during in-situ vapor doping of iodine is confirmed to increase with a doping progresses, exhibiting Dysonian paramagnetic behavior typical of conductive polymers.

Original languageEnglish
Pages (from-to)22-37
Number of pages16
Issue number1
Publication statusPublished - 2009


  • Conductive polymer
  • Electron spin resonance
  • Liquid crystal


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