Synthesis and Properties of Ferroelectric Liquid Crystals with a Fluorinated Asymmetric Frame
Synthesis and Properties of Ferroelectric Liquid Crystals with a Fluorinated Asymmetric Frame
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含氟不对称骨架铁电液晶的合成与性能
DOI：
10.5059/yukigoseikyokaishi.49.467
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发表时间：
1991
影响因子：
0.2
通讯作者：
H. Nohira
中科院分区：
文献类型：
--
作者：
H. Nohira
为了制备具有大自发极化和对电场响应时间短的新型铁电液晶（FLC），利用由R-（+）-1、2-环氧烷烃制备的光学活性2-氟烷醇，或通过其外消旋体光学拆分制备的1,1,1-三氟-2-辛醇和3-三氟甲基链烷酸，合成了具有氟化不对称框架的光学活性化合物。由上述氟化化合物制备的液晶表现出显着的FLC特性，例如宽的S*c相温度范围、大的自发极化和短的响应时间。我们现在希望描述这些新型 FLC 的合成程序和介晶性质。
In order to prepare new types of ferroelectric liquid crystals (FLC) with a large spontaneous polarization and a short response time toward electric field, optically active compounds possessing a fluorinated asymmetric frame were synthesized utilizing optically active 2-fluoroalkanols prepared from R- (+) -1, 2-epoxyalkanes, or 1, 1, 1-trifluoro-2-octanol and 3-trifluoromethylalkanoic acids prepared by the optical resolution of their racemates. The liquid crystals prepared from the above mentioned fluorinated compounds exhibited such remarkable FLC characteristics as a wide temperature range of the S*c phase, a large spontaneous polarization, and a short response time. We now wish to describe the synthetic procedures and the mesomorphic properties of these new types of FLC.