Liquid crystalline behaviour of mixtures of structurally dissimilar mesogens in binary systems

We have studied four binary systems comprising four ester components, viz. 4-nitrophenyl-4´-n-alkoxybenzoates (where n-alkoxy is nbutoxy, C4, n-hexyloxy, C6, n-octyloxy, C8 and n-decyloxy, C10) and one azo component, 4-n-decyloxy phenylazo-4´-isoamyloxy benzene. A variety of mesomorphic properties are observed in these mixtures. The properties of these systems are discussed on the basis of phase diagrams.