Synthesis and liquid crystalline properties of a series of cholesterol‐based dimesogenic compounds |
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| Authors: | Chang‐Cheng Wu |
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| Institution: | 1. Tianjin Municipal Key Laboratory of Fiber Modification &2. Functional Fiber , School of Material Science &3. Chemical Engineering , Tianjin Polytechnic University , Tianjin 300160 , PR China E-mail: ccwu@tjpu.edu.cn |
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| Abstract: | The synthesis and mesomorphic properties of a series of novel dimesogenic compounds containing the cholesteryl ester unit and a phenyl benzoate group are reported. The two mesogenic units of these compounds are linked through dicarboxylic ester bonds, with alkylene spacer lengths of 2, 4, 6 and 8 methylene units. The chemical structures and liquid crystalline properties of this series of compounds were characterized by FTIR, 1H NMR, hot stage‐coupled polarizing microscopy and DSC. The results show that this series of compounds are cholesteric liquid crystals over a wide range, both during heating and cooling, and they exhibit iridescent colours in the liquid crystalline state. |
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