Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.369, 37-46, 2001
Effect of lateral hydroxy/alkoxy group on mesomorphism of azobenzene derivatives
Two homologous series are synthesized by fixing a rigid 4-methyl phenyl azo group to resorcinol moiety. In series I one phenolic -OH group is alkylated whereas, in series II both the phenolic -OH groups are alkylated. Monoethers of series I having free lateral hydroxy group due to strong hydrogen bonding, exhibit nematic mesophases whereas, diethers of series H are non-mesogenic.
Keywords:azobenzene derivatives;nematic mesophase