Liquid Crystalline Properties of <i>N</i>-(4-Alkoxybenzylidene)-4-halogenoanilines

Abstract

Abstract N-(4-Alkoxybenzylidene)-4-halogenoanilines have been synthesized, and the phase transitions determined using a differential scanning calorimeter and a polarizing microscope. Smectic and nematic phases have been observed for fluoro and chloro derivatives whereas bromo and iodo derivatives exhibit only a smectic phase.