New Ionic Liquid Crystal Compounds Having a 1,3-Oxathiane or 1,3-Dioxane Ring
摘要:
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)]。
Liquid Crystal Materials with Sulfur Atoms Incorporated in the Principal Structure. IV. New Liquid Crystal Compounds; 2-(<i>p</i>-Substituted phenyl)-5-alkyl-1,3-oxathianes
作者:Yuichiro Haramoto、Hiroyoshi Kamogawa
DOI:10.1246/bcsj.58.1821
日期:1985.6
3-oxathianes, newliquidcrystal compounds, were synthesized by the acetalformation reaction of the corresponding aldehydes and 2-alkyl-3-mercapto-1-propanols. The mesomorphic behaviors of these 1,3-oxathiane compounds were compared with those of the corresponding 1,3-dithianes and 1,3-dioxanes. Some of 2-(p-cyanophenyl)-5-alkyl-1,3-oxathianes exhibit monotropic nematic liquidcrystal phase at room