著者

奥田 大樹 田中 大介 美濃部 亮太 内田 欣吾 清水 洋

出版者

一般社団法人 日本液晶学会

雑誌

日本液晶学会討論会講演予稿集 (ISSN:18803490)

巻号頁・発行日

vol.2013, pp._PA45-1_-_PA45-2, 2013

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The alkyl homologues of azobenzene-triphenylene mesogen (1C-n: n=11-16) exhibit both thermal and photo-induced phase transitions among calamitic smectic and discotic columnar mesophases with the change of molecular anisotropy. However, one can see the difference in phase transition parameters between the shorter (1C-11 and 12) and longer (1C-13〜16) homologues. The optical texture observations of these homologues on a glass and polyimide-coated substrates indicated that the molecular conformation (relative positioning) of the azobenzene moieties and the central triphenylene differs with a critical point of the alkyl chain length between 1C-12 and 13.