Obliquely projecting chiral alkyl chains and their precession around the long core axes in the smectic-A phase of an antiferroelectric liquid crystal.
Obliquely projecting chiral alkyl chains and their precession around the long core axes in the smectic-A phase of an antiferroelectric liquid crystal.
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反铁电液晶近晶 A 相中倾斜投影的手性烷基链及其绕长核轴的进动。
DOI：
10.1103/physreve.53.r4295
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Kitazume
中科院分区：
文献类型：
--
作者：
Jin;Ling;Takanishi;Ishikawa;Takezoe;Fukuda;Kakimoto;Kitazume
通过对手性和非手性烷基链分别去氢化，我们观察到了一个原型反铁电液晶4-(1-甲基庚氧甲酰基)苯基-4‘-辛氧基联苯-4-羧酸酯(MHPOBC)的CH2和苯环伸缩峰的红外吸收随偏振片旋转角的变化。即使在近晶-A(Sm-A)相，手性链与核心轴之间的夹角也大于54.7(幻角)，手性近晶-C(Sm-C*)相的进动似乎偏向或受阻于倾斜面法向。
By deuterizing the chiral and achiral alkyl chains separately, we have observed the ir absorbance vs polarizer rotation angle for the C H 2 and phenyl ring stretching peaks in a prototype antiferroelectric liquid crystal, 4-(1-methylheptyloxycarbonyl) phenyl 4′-octyloxybiphenyl-4-carboxylate (MHPOBC). The angle between the chiral chain and core axes is more than 54.7 (the magic angle) even in the smectic-A (Sm-A) phase and the precession appears to be biased or hindered toward the tilt-plane normal in the chiral smectic-C (Sm-C*) phase.