【 Liq. Cryst., 2007, 34, 975-979.】Synthesis and mesomorphic properties of some chiral fluorinated liquid crystals
writer：Yonggang Yang, Haitao Li, Jianxun Wen
keywords：chiral fluorinated
source：期刊
specific source：Liq. Cryst.
Issue time：2007年
Yonggang Yang, Haitao Li, Jianxun Wen
Liq. Cryst., 2007, 34, 975-979.
Some fluorinated chiral liquid crystals were synthesized and the compounds characterized by IR, 1H NMR, 19F NMR and mass spectroscopy and elemental analysis. Their phase transition behaviour was investigated by differential scanning calorimetry and polarizing optical microscopy. Nearly all of the compounds synthesized are liquid crystals with an enantiotropic cholesteric phase. Some of them exhibit a blue phase. Lateral tetrafluoro substitution decreases the clearing point and molecular polarity affects the formation of liquid crystalline phases.