2D02 アベンゼンの光異性化を用いた(高分子/液晶) 複合膜の光透過率に及ぼす高分子マトリクス構造の影響

概要

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We prepared isotropic polymer/nematic liquid crystal composite films containing an azobenzene derivative as a photoresponsive liquid crystal, and evaluated the effect of the polymer matrix on the optical response. When irradiation at 366 nm was performed at room temperature, the composite films changed from light-scattering state to transparent state. The reversible change between the different two optical states was induced by alternating irradiation with UV light and visible light. This phenomenon is ascribed to photochemical phase transition between nematic and isotropic phases induced by photoisomerization of the azobenzene molecules. Furthermore, the recovery process to the initial light-scattering state was considerablely affected by the length of the side chain of the polymer matrix. The memory effect was observed in the composite film with relatively long alkyl chains.
日本液晶学会の論文
1998-10-12