1B08 共役系主鎖ポリパラフェニレンビニレン骨格を有する高分子液晶の電子・光物性

概要

論文の詳細を見る
Electrical and optical properties of a poly(p-phenylenevinylene) derivative substituted with a long side chain containing alkoxybiphenyl mesogenic unit have been studied. A liquid-crystalline molecular alignment and layer structure have been confirmed by optical microscopic observation and X-ray diffraction measurement, respectively. The dielectric constant changes in a stepwise manner at phase transition temperatures. The band gap of the new polymer in the liquid-crystalline phase has been evaluated to be 2.3 eV, which monotonously decreases with decreasing temperature. A photoluminescence peak was observed at around 560 nm, which corresponds to the emission originating from the poly(p-phenylenevinylene) main chain. An electroluminescnce device has been fabricated using this liquid-crystalline polymer and it has been found that the emission spectra depend on the polarity of the applied electric field.
日本液晶学会の論文
1998-10-12