Novel triphenylenoimidazole discotic liquid crystals |
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Authors: | Sandeep Kumar Satyam Kumar Gupta |
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Institution: | Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India |
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Abstract: | A novel discotic core was constructed by fusing imidazole unit with well-known triphenylene discotic core. Two new imidazole fused unsymmetrically substituted triphenylene derivatives were prepared and characterized. While the molecular structures of the new compounds were verified by 1H NMR, UV, MS and elemental analysis, their liquid crystalline properties were determined by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction studies. These triphenylenoimidazole derivatives were found to exhibit hexagonal columnar mesomorphism over a wide temperature range. |
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Keywords: | Discotic liquid crystal Triphenylenoimidazole Triphenylene Imidazole Columnar phase |
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