Mesogens with chalcone central linkage are rare. It has been observed that–CO–CH= CH– linkage is less conducive to mesomorphism compared to–CH= N–(azomethine),–COO– (ester),–N= N–(azo) linkages due to the non linearity and angle strain arising from the keto group. But when–CO–CH= CH–linkage is present with other central linkages it becomes condusive to mesomorphism. In the present investigation two homologous series were ...
