Synthesis, characterization and phase transition studies across different liquid crystalline phases innO.O4 compounds

This manuscript presents the synthesis, characterization and phase transition studies through density measurements on N-(p-n-alkyloxybenzylidene)-p-n-butyloxyanilines, nO.O4 compounds. The alkoxy chains with numbers n = 1 to 11, 14, 16 and 18 are synthesized and the higher homologues with n = 14 are synthesized and characterized for the first time. These compounds exhibit a variety of phase variants. The density results show that all the phase transformations are of first-order except the SmA–SmC phase transition which is of second order. The results are discussed with the body of the data available.