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Abstract
Several members of a new mesogenic family of Schiff s bases: 6-n-aIkoxy-3-pyridyl-methylene-4′-n-alkoxyanilines, were prepared and their mesomorphic properties studied.
Nematic mesomorphism was obtained when the alkoxy group in the carbocyclic ring was an ethoxy group, while the rest of the compounds studied showed smectic polymorphism (A, C, and B types). Comparative studies with the corresponding 4-n-alkoxybenzylidene-4′-n-alkoxyanilines and 4-n-alkoxybenzylidene-2′-n-alkoxy-5′-aminopyridines were carried out.