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Liquid Crystals Volume 34, 2007 - Issue 8
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Original Articles

Synthesis and mesomorphic properties of chiral fluorinated liquid crystals

Yonggang Yang School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, PR ChinaCorrespondence[email protected]
,
Haitao Li School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, PR China
&
Jianxun Wen School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, PR China
Pages 975-979 | Received 16 Mar 2007, Accepted 29 May 2007, Published online: 11 Sep 2007
 
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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.

Acknowledgement

This work was partially supported by Jiangsu Provincial Key Laboratory of Organic Chemistry Foundation and Suzhou University Starting Foundation.

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Related Research Data

Effect of spacer length on mesomorphic behaviours of chiral liquid crystal compounds containing (-)-menthyl
Source: Taylor & Francis
The effect of terminal alkoxy chain on mesophase behaviour, optical property and structure of chiral liquid crystal compounds derived from (−)-menthol
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