Synthesis and mesomorphic properties of chiral fluorinated liquid crystals |
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| Authors: | Yonggang Yang Haitao Li Jianxun Wen |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering , Suzhou University , Suzhou 215123, PR China ygyang@suda.edu.cn;3. School of Chemistry and Chemical Engineering , Suzhou University , Suzhou 215123, PR China |
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| Abstract: | 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. |
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| Keywords: | ferroelectric liquid crystals antiferroelectric phase dielectric properties lactate group TGBA phase |
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