2D12 トラン部位を有するアゾベンゼン液晶の光応答性とホログラフィーへの応用

概要

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Novel azobenzene derivatives contakning a tolane moiety, 4-hexyloxy-[4'-(4-nitrophenylethynyl)]azobenzene (compound A) and 4-hexyloxy-[4'-(4-aminophenylethynyl)]azobenzene (compound B) were synthesized. Liquid-crystalline behavior and optical property of these compounds were evaluated by DSC, optical microscopy, and UV-Vis spectroscopy. Both compounds were found to show nematic phase. Compound A showed an absorption maximum at shorter wavelength (λ_<max> = 376 rim) than compound B (λ_<max> = 407 nm). For both samples, trans-cis photoisomerization was induced by photoirradiation, and trans form was thermally recovered. Thermal isomerization of these samples containing a strong electron donor or accepter was much slower than that of normal donor-accepter azobenzenes.
日本液晶学会の論文
2001-09-24