Mixed Dimer Formation in Binary and Ternary Mixtures of Liquid Crystalline 4-Substituted Benzoic Acids |
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| Authors: | S. Takenaka M. M. Labes |
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| Affiliation: | 1. Department of Chemistry , Temple University , Philadelphia, PA, 19122;2. Department of Applied Chemistry , Osaka University , Yamada-Kami, Suita, Osaka, 565, Japan |
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| Abstract: | Mixed dimer formation is studied for a wide variety of 4-substituted benzoic acids that form liquid crystalline phases. The solid-mesophase transitions can show double eutectics when mixed dimer formation occurs, but in many cases the equilibrium constant for such a mixed dimer is extremely small. The mesophase-isotropic transitions are essentially linear over the entire phase diagram. Ternary mixtures can be created having nematic ranges of over 80° by virtue of eutectization. |
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