PDa06 高分子(液晶)・低分子液晶複合体のフォトリフラクティブ効果

抄録

Photorefractive (PR) effect was observed in a new type of polymer (liquid crystal) and low-molecular liquid crystals composites doped with 2,4,7-trinitro-9-fluorenone (TNF). We synthesized methacrylate copolymers composing a cyanophenyl benzoate (BeCN) side-group and a carbazoyl cthoxy side-group. Copolymer showed nematic phase when BeCN composition was 80% or more. High PR performance was obtained in the composite that exhibiled liquid crystalline phase without any phase separation. Two beam coupling method revealed that the optical gain of the composite film was 200/cm at 5000V/cm in the Bragg-diffracfion region.