【Mol. Cryst. Liq. Cryst., 2007, 469, 23-29.】Synthesis and mesomorphic properties of some liquid crystals with semi-fluorocarbon chains
writer：Yonggang Yang, Haitao Li, Jianxun Wen
keywords：semi-fluorocarbon chains
source：期刊
specific source：Mol. Cryst. Liq. Cryst.
Issue time：2007年
Yonggang Yang, Haitao Li, Jianxun Wen
Mol. Cryst. Liq. Cryst., 2007, 469, 23-29.
Two series of compounds with semifluorinated chains have been synthesized. These compounds were characterized by IR, 1H NMR, 19F NMR, MS, and elemental analysis. Their phase-transition behavior was investigated by differential scanning calorimetry and polarizing optical microscopy. Both the introduction of a triple bond and the decrease of the polarity of the core act to decrease the clearing points and suppress the formation of smectic C phase.