Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.302, 339-344, 1997
Mesogenic Behaviors of 4-Carboxy-Benzo-15-Crown-5 and 4-Propenyloxybenzo-15-Crown-5 Stilbazolyl Esters
Mesogens without terminal chain were obtained by connecting benzo-15-crown-5 and stilbazole with carboxy and propenoic acids. A nematic phase was observed for the later on cooling from 145 to 129 degrees C. Hydrogen bond induced nematic and smectic A phases with wide temperature ranges were observed for mixtures containing para-and meta-alkyloxybenzoic acids as proton donors.
Keywords:LIQUID-CRYSTALS;RING