Citation: Duo Wei Zhang, Wei Huang, Guo Hui Pan, Wan Li He, Yu Bo Cao, Jin Bao Guo, Hui Cao, Huai Yang. Synthesis and characterization of non-symmetrical liquid crystals containing a cholesteryl ester moiety[J]. Chinese Chemical Letters, ;2009, 20(5): 562-565. doi: 10.1016/j.cclet.2009.01.012 shu

Synthesis and characterization of non-symmetrical liquid crystals containing a cholesteryl ester moiety

Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 17 October 2008

Fund Project: Financial support from National Natural Science foundation (No.20674005), National High Technology "863" Program of China (No.2006AA03Z108) and National Science and Technology Supporting Item (No.2006BAI03A09) are gratefully acknowledged.

In this paper, a series of chiral non-symmetrical liquid crystals (nBA-chol) consisting of a cholesteryl ester moiety as chiral entity and a biphenyl aromatic core with different terminal alkyl chain has been synthesized and investigated for their liquid crystalline properties. Effects of numbers of methylene units in the terminal alkyl chain on the phase transition temperatures and on the temperature-dependent pitch lengths of the chiral liquid crystals have been studied. The long terminal alkyl chain tends to exhibit smectic A mesophases. The pitch lengths of the cholesteric mesophases of the chiral liquid crystals decrease with increasing temperature and with increasing numbers of methylene units in the terminal alkyl chain, respectively.
- Liquid crystals,
- Non-symmetrical,
- Chiral,
- Mesophase,
- Pitch
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