The Preparation and Properties of the α,ω-bis(4,4′-Cyanobiphenyloxy)Alkanes: Nematogenic Molecules with a Flexible Core
作者:J. W. Emsley、G. R. Luckhurst、G. N. Shilstone、I. Sage
DOI:10.1080/01406568408070532
日期:1984.10
ω-bis(4,4′-cyanobiphenyloxy) alkanes have been synthesised. The compounds are nematogenic, although the mesophases for the first and third members of the series are monotropic. Both the nematic-isotropic transition temperature and the entropy of transition exhibit a pronounced dependence on the length of the flexible core; this is analogous to that found for main chain thermotropic liquid crystal polymers
摘要 α,ω-双(4,4'-氰基联苯氧基)烷烃同源系列的前十二个成员已被合成。尽管该系列的第一个和第三个成员的中间相是单向性的,但这些化合物是致线虫的。向列-各向同性转变温度和转变熵都表现出对柔性核长度的显着依赖性;这类似于在主链热致液晶聚合物中发现的情况。