Cyanated liquid crystals with trans-stilbene structure: Syntheses and their cyclotrimerizations |
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| Authors: | Jiunn–Chih Ou Yen–Long Hong Fu–Shan Yen Jin–Long Hong |
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| Affiliation: | 1. Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424, Republic of China;2. Institute of Materials Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan 80424, Republic of China |
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| Abstract: | ![]()
Liquid crystalline aromatic monocyanate ( M ) and dicyanates ( D1 and D2 ) with trans-stilbene ( Ph CHCH Ph ) structure were synthesized and their cyclotrimerization reactions were studied by differential scanning calorimetry and infrared spectroscopy. Monocyanate M underwent cyclotrimerization to yield a trimerized material with discotic properties. Dicyanate D2 and its cured product failed to exhibit any mesophase. In contrast, polycyclotrimerization of dicyanate D1 obtained a liquid crystalline thermoset with its schlieren texture prolonged over a wide temperature range. © 1995 John Wiley & Sons, Inc. |
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| Keywords: | liquid crystals cyanate cyclotrimerization liquid crystalline thermoset |
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