名称:
Synthesis, mesomorphic and dielectric properties of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates, 4-(cyanomethoxy)-4′-alkoxyazo- and -azoxybenzenes
摘要:
Preparation methods were developed for homologs of 4-(cyanomethoxy)phenyl 4-alkoxybenzoates (C-7, C-8, C-9), 4-(cyanomethoxy)-4'-alkoxyazo (C-2, C-3, C-6), -azoxybenzenes (C-3, C-6) whose composition and structure were proved by elemental analysis and H-1 NMR spectra. 4-(Cyanomethoxy) group destabilizes the mesophase, consequently, only four among the compounds obtained exhibit the thermotropic nematic mesomorphism.