作者:Yuichiro Haramoto、Yoshiharu Akiyama、Ryouichi Segawa、Masato Nanasawa、Seiji Ujiie、Andrew B. Holmes
DOI:10.1246/bcsj.72.875
日期:1999.4
New pyridinium type thermotropic ionic liquid crystal materials bearing a 1,3-oxathiane ring in their central core: N-substituted 4-(5-alkyl-1,3-oxathian-2-yl)pyridinium bromides (8) and corresponding 1,3-dioxane analogs (10) were synthesized. And the mesomorphic behaviors of these two systems are compared. The principal feature of these compounds is to exhibit a smectic A phase over a very wide temperature range including room temperature [for example 8-4: G −7 SmA 166 I; 10-4: G −24 SmA 152 I (°C)].
新型吡啶鎓热致性离子液晶材料的中心核含有一个 1,3- 氧噻烷环:合成了 N-取代的 4-(5-烷基-1,3-氧硫杂环-2-基)溴化吡啶鎓(8)和相应的 1,3-二氧六环类似物(10)。并对这两种体系的介观行为进行了比较。这些化合物的主要特征是在包括室温在内的很宽温度范围内呈现出共晶 A 相[例如 8-4:G -7 SmA 166 I;10-4:G -24 SmA 152 I (°C)]。