Synthesis of novel liquid-crystalline thiophene derivatives and evaluation of their photoresponsive behavior

摘要

Nove liquid-crystalline (LC) thiophene derivatives were synthesized, and their LC behavior and photoresponsive behavior were explored. Among the thiophene derivatives synthesized, 4-(4-alkylphenylazo) phenyl 2-thienylacrylates (TAn, n=4, 5, 6, and 7) were found to show nematic (N) phase. TAn exhibited the N phase only when the azobenzene moiety in the molecule was in the trans form while no LC phase when the azobenzene was in the cis form.