ORGN 563 |
Preparation of liquid crystals and organogelators with a bitropone core
| Kanji Kubo1, Akira Mori1, Seiji Ujiie2, and Carsten Tschierske3. (1) Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga-koen 6-1, Kasuga, 8168580, Japan, (2) Department of Material Science, Shimane University, (3) Institute of Organic Chemistry, Martin-Luther-University |
It is widely accepted that preparations of self-assemblies such as liquid crystals and gelators are paid much attentions from theoretical and practical view points. In order to form these self-assemblies, however, it must be important to control the transformation to a crystalline state from a metastable and a mesomorphic state. Recently we have prepared troponoid liquid crystals with a seven-membered core, such as 5-hydroxytropone, 5-aminotropone, 5-cyanotropone, and 2-amino-5-phenyltropone. The tropone core has a large dipole moment (3.5 D), which would help to form a layer structure. The cores enhanced the formation of smectic phases when compared with the corresponding benzenoids. In benzenoid liquid crystals, a biphenyl unit has been widely used as one of the most useful cores. However, liquid crystals with a bitropone core have not been reported. In this symposium, we report the mesomorphic properties and gelling abilities of liquid crystals (1T) with a bitropone core. |
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Bioorganic, Molecular Recognition, Asymmetric Reactions and Syntheses
11:00 AM-1:00 PM, Wednesday, September 10, 2003 Javits Convention Center -- Hall 1B/1C, Poster
Division of Organic Chemistry
The 226th ACS National Meeting, New York, NY, September 7-11, 2003
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