Synthesis, Crystal Structures and Mesomorphic Properties of Liquid Crystals with a<i>N</i>,<i>N</i>′-Bis(tropon-2-yl)piperazine Skeleton
作者:Emi Yamamoto、Kanji Kubo、Akira Mori、Seiji Ujiie
DOI:10.1246/cl.2002.100
日期:2002.1
New troponoid liquid crystals with a N,N′-bis(tropon-2-yl)piperazine core were prepared. N,N′-Bis(tropon-2-yl)piperazine derivatives (1) had a smectic C phase with lower thermal stabilities than the corresponding benzenoid derivatives (2), which had a smectic B phase. A single crystal of 1d had distinct layer structures observed in a smectic C phase.
制备了具有 N,N'-双(tropon-2-yl)piperazine 核的新型 troponoid 液晶。N,N'-Bis(tropon-2-yl)piperazine 衍生物 (1) 具有近晶 C 相,其热稳定性低于相应的苯类衍生物 (2),后者具有近晶 B 相。1d 的单晶在近晶 C 相中观察到明显的层结构。