摘要
设计并合成了侧位含氟的4'—正辛氧基苯甲酸—4'—腈酚酯和4'—正辛氧基苯酚酯并测定比较了它们的相态和介电常数、电阻率等物理常数,对氟原子引入位置的影响也进行了讨论。
The synthesis and some important properties of 4’- octyloxyphenyl and 4’-cyanophenyl 4-octyloxybenzoate are described. The effects of lateral fluorine substituent are discussed and it has been investigated that the increase of the mesomerphic phase and decrease of both melting and clearing point as well as dielectric anisotropies on the compounds with lateral fluorine substituent. The title compounts have been used as excellent hosts material for TN type system.
