2000 Fiscal Year Final Research Report Summary
Preparation of soild cholesteric films from biomaterials and usage of their optical performances
| Project/Area Number |
11555252
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
高分子構造・物性(含繊維)
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
WATANABE Junji Tokyo Institute of Technology, Department of Organic and Polymeric Materials, Professor, 大学院・理工学研究科, 教授 (90111666)
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| Co-Investigator(Kenkyū-buntansha) |
KOUSHOU Hiroshi Dainichiseika Corporation, Technical Research Laboratory, Research Scientist, 中央研究所, 研究員
KOBORI Yoshihiro Nippon Mitsubishi Oil Corporation, Central Technical Research Laboratory, Research Scientist, 中央研究所, 研究員
KAWAUCHI Susumu Tokyo Institute of Technology, Department of Organic and Polymeric Materials, Research Associate, 大学院・理工学研究科, 助手 (80204676)
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| Project Period (FY) |
1999 – 2000
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| Keywords | biopolymer / polypeptide / cellulose / cholesteric liquid crystal / helical structure / liquid crystal glass / phase matching of light / optical filter |
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| Research Abstract |
In this study, we have prepare the cholesteric liquid crystals based on the biomaterials, polypeptide, cellulose and chitin. It has been reallized that these biomaterials can form only the lyotropic liquid crystals, but our present study indicates that they can also form the thermotropic cholesteric liquid crystals if they are modified chemically on the side chains. Thermotropic liquid crystals are very convenient to prepare the cholesteric glasses with the macro-helical structure, since they can be easily prepared by quenching the cholesteric liquid crystals. In these films, the uniform cholesteric domain structures with the helical axis lying perpendicular to the film surface and with different helical pitches from 200 nm to the infinite were easily prepared. The optical properties of these fine cholesteric solids were widely studied and their application was considered as specific optical filter, optical compensator, and etc.
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