Terminal Polar Substituent Effect on the Liquid Crystalline Properties of a Series of 4-Octyloxy-N-(4-substituted benzylidene)anilines

Article abstract of DOI:10.1246/bcsj.64.1679

Mesomorphic properties are studied on the title compounds where substituents are F, Cl, Br, I, NO2, and CN.Besides the known mesophases, nematic and smectic Ad, in CN and NO2 homologues, stable smectic A and B phases were observed in either of the Cl and Br derivatives.Metastable nematic and smectic A phases were found in F derivative.The effects of terminal polar substituents, stabilization of the smectic A phase by moderately polar substituents, and of the nematic phase by strongly polar substituents, were confirmed.