Liquid crystalline thiadiazole derivatives: new ferroelectric thiadiazole derivatives |
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Authors: | Yan Xu Baolong Li Huibiao Liu Zijian Guo Zihou Tai Zheng Xu |
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Affiliation: | Centre for Liquid Crystal Research and Education, Faculty of Physical Sciences, Nagarjuna University, Nagarjuna Nagar -522 510, A.P., India |
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Abstract: | A series of optically active thiadiazole Schiff's bases were prepared and their liquid crystalline properties were studied. Chirality was achieved by introducing an asymmetric carbon atom into the alkoxy group. Thus, 2-(p -active-alkoxyphenyl-imine)-5-(p-n-alkoxy)phenyl-1,3,4-thiadiazoles were synthesized. Their structures were characterized using elemental analysis, and IR, 1H NMR and mass spectroscopies; their thermal properties were determined using DSC and polarized light microscopy. All the compounds are enantiotropic liquid crystals, and most of them exhibited both chiral smectic C* and cholesteric mesophases. Only one of them did not show a smectic C* phase. |
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Keywords: | chiral induction ester carbon nanotube twist electroclinic |
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