New Ferroelectric Liquid Crystal Materials: (+)-4-(2-Methylbutoxycarbonyl)phenyl 4-(5-Alkyl-1,3-dioxan-2-yl)benzoate
作者:Yuichiro Haramoto、Katumasa Kawashima、Hiroyoshi Kamogawa
DOI:10.1246/bcsj.61.431
日期:1988.2
(+)-4-(2-Methylbutoxycarbonyl)phenyl 4-(5-alkyl-1,3-dioxan-2-yl)benzoate (12), (+)-4-(2-methylbutoxy)-phenyl 4-(5-alkyl-1,3-dioxan-2-yl)benzoate (11) and the corresponding 1,3-oxathiane (13, 14) and 1,3-dithiane compounds (15, 16) were synthesized. The mesomorphic behaviors of these compounds were measured. Compounds 12 exhibited the ferroelectric liquid-crystal behavior (R=n-C11H23: −4 SmC* 94 °C), while the corresponding 1,3-oxathiane (13, 14) and 1,3-dithiane compounds (15, 16) did not exhibit such behavior. Therefore, 1,3-dioxane compounds are more favorable for transition of SmA to SmC* than the 1,3-oxathiane or 1,3-dithiane analogs.
(+)-4-(2-甲基丁氧基羰基)苯基 4-(5-烷基-1,3-二恶烷-2-基)苯甲酸酯 (12), (+)-4-(2-甲基丁氧基)-苯基 4-(合成了5-烷基-1,3-二恶烷-2-基)苯甲酸酯(11)和相应的1,3-氧噻烷(13, 14)和1,3-二噻烷化合物(15, 16)。测量了这些化合物的介晶行为。化合物12表现出铁电液晶行为(R=n-C11H23: -4 SmC* 94 °C),而相应的1,3-氧噻烷(13, 14)和1,3-二噻烷化合物(15, 16)没有表现出这样的行为。因此,1,3-二恶烷化合物比1,3-氧杂噻烷或1,3-二噻烷类似物更有利于SmA向SmC*的转变。