Derivatives of menthothiophene as chiral dopants for nematic liquid crystals |
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| Authors: | Valery V Vashchenko Nikolay Yu Gorobets Irina V Knyazeva Olexander V Kurochkin Svetlana V Shishkina |
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| Institution: | 1. State Scientific Institution: Institute for Single Crystals, National Academy of Sciences of Ukraine , Kharkov , Ukraine valeravv@isc.kharkov.com;3. State Scientific Institution: Institute for Single Crystals, National Academy of Sciences of Ukraine , Kharkov , Ukraine;4. Institute of Physics National Academy of Sciences of Ukraine , Kyiv , Ukraine |
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| Abstract: | New chiral derivatives of thiophene fused with menthane, camphor or the 3R-3-methylcyclohexane ring were prepared and studied as chiral dopants in cholesteric liquid crystalline mixtures. The helical twisting power of the most effective compounds of this series, menthothiophenes, was strong enough to obtain selective reflection of visible light at 16 wt% concentration of the dopant in a non-chiral nematic host. |
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| Keywords: | chiral dopants chiral tetrahydrobenzothiophenes cholesteric liquid crystals helical twisting power |
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