화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.493, 65-70, 2008
Fluoro- and Nitro-Substitution Effect of Some Chiral Compounds
Four chiral compounds have been synthesized. Their phase transition behavior was investigated by differential scanning calorimetry and polarized optical microscopy. Two of them show monotropic smectic C* phases. Moreover, one of them shows an enantiotropic blue phase. The lateral fluoro-substitution strongly suppressed the formation of SmC* phases and decreased clearing points. Although the introduction of nitro group in the core decreased the length-diameter ratio, the temperature range of monotropic SmC* phase did not change much.