A series of laterally o difluoro substituted chiral liquid crystals, S(+) 2 methyl 1 butyl 4′ [(4 alkoxyl 2, 3 difluoro)benzoyloxy] 4 biphenyl carboxylates, have been synthesized using a simple process. T...A series of laterally o difluoro substituted chiral liquid crystals, S(+) 2 methyl 1 butyl 4′ [(4 alkoxyl 2, 3 difluoro)benzoyloxy] 4 biphenyl carboxylates, have been synthesized using a simple process. Their molecular structures were determined using IR, NMR, MS, and EA. Their transition temperatures were measured using DSC(Differential Scanning Calorimeter). All of the compounds exhibit the N * phase and their clearing points vary regularly with the increase in the number of terminal group carbons. The influence of lateral fluoro substituents on the properties was also investigated.展开更多
文摘A series of laterally o difluoro substituted chiral liquid crystals, S(+) 2 methyl 1 butyl 4′ [(4 alkoxyl 2, 3 difluoro)benzoyloxy] 4 biphenyl carboxylates, have been synthesized using a simple process. Their molecular structures were determined using IR, NMR, MS, and EA. Their transition temperatures were measured using DSC(Differential Scanning Calorimeter). All of the compounds exhibit the N * phase and their clearing points vary regularly with the increase in the number of terminal group carbons. The influence of lateral fluoro substituents on the properties was also investigated.
