【Mol. Cryst. Liq. Cryst., 2008, 493, 65-70】Fluoro- and nitro-substitution effect of some chiral compounds
writer：Yongmin Guo, Lifeng Bi, Baozong Li, Yonggang Yang, and Jianxun Wen
keywords：chiral
source：期刊
specific source：Mol. Cryst. Liq. Cryst
Issue time：2008年
Yongmin Guo, Lifeng Bi, Baozong Li, Yonggang Yang, and Jianxun Wen
Mol. Cryst. Liq. Cryst., 2008, 493, 65-70.
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.