1C10 アゾベンゼン誘導体の光異性化反応を用いた液晶サスペンションの光変調(2004年日本液晶学会討論会)

概要

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We investigated optical control of light-scattering properties in liquid-crystal suspensions by means of photoisomerization of azobenzene derivatives. Liquid-crystal suspensions, azobenzene-containing nematic liquid crystals dispersed with small polymer particles (φ〜3μm), scattered light strongly in nematic phase. This would be attributable to polydomain structures and large birefringence of liquid crystals. The light-scattering state turned into a transparent one when the polydomain structures were erased by means of trans-to-cis photoisomerization of the doped azobenzene dye in which the nematic-to-isotropic phase transition was induced. The transparent state could be switched to the initial light-scattering state by a recovery of the nematic phase where the cis-to-trans photoisomerization occurred.
日本液晶学会の論文
2004-09-26