Effect of exchange of terminal substituents on the mesophase behavior of laterally methyl substituted phenyl azo benzoates in pure and mixed systems

► Four homologous series of laterally methyl substituted derivatives were prepared. ► 4-(4′-Hexyloxyphenylazo)-2-(or 3) methylphenyl-4″-substituted benzoates. ► 4-(4′-Substituted phenylazo)-2-(or 3) methylphenyl-4″-hexyloxybenzoates. ► Mesophase behavior in pure and mixed states. ► Two types of binary phase diagrams were constructed.