Flying-seed-like liquid crystals
| Autor: | Kazuchika Ohta, Masahiro Ando, Tomoyuki Shibuya |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Journal of Materials Chemistry. 16:3635 |
| ISSN: | 1364-5501 0959-9428 |
| DOI: | 10.1039/b607466a |
| Popis: | In 1911, Vorlarnder reported liquid-crystalline properties of unique “flying-seed-like” alkali metal carboxylates. They are neither “rod-like” nor “disk-like”. Moreover, they have neither a rigid core nor flexible long chains. The molecular shapes are totally different from about 93000 general liquid crystalline compounds. These flying-seed-like liquid crystals have been forgotten for about 100 years. We revealed and established for the first time from precise microscopic observations and temperature-dependent X-ray diffraction studies that sodium diphenylacetate exhibits a hexagonal columnar mesophase, and that potassium diethylacetate and potassium dimethylacetate exhibit a smectic A mesophase. These “old and new” flying-seed-like liquid crystals will become a novel field of science. |
| Databáze: | OpenAIRE |
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