Liquid Crystalline ?-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group

ABSTRACT: Phenylene-thiophene-based liquid crystalline ?-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.

SUBMITTER: Kawabata K 

PROVIDER: S-EPMC5445693 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature