Study of New Liquid Crystal Materials (I) Synthesis and Mesomorphic Properties of Alkoxymethylene Substituted Phenylcyclohexanes

Abstract
The synthesis of alkoxymethylene alkyl substituted phenylcyclohexanes is described. Such phenylcyclohexanes exhibited monotropic nematic and/or smectic phases. They also had lower clearing points and bulk viscosities than alkoxy alkyl substituted phenylcyclohexanes. This is apparently due to the high flexibility and low polarizability of the alkoxymethylene groups and their effects on the packing of the molecules.