Synthesis and Mesomorphic Properties of Some Fluoro-Substituted Benzoates

Abstract Several series of fluoro-substituted benzoate liquid crystals have been synthesized. The results showed that the SmA phase is enhanced with the increasing of the degree of fluoro-substitution on the para- and meta-postion of the terminal phenyl groups. And the molecules which have same molecular structural formula show nearly the same melting points. It is also discussed about the effect of the ester bond′s direction on the mesomorphic properties.