| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
액정/LCD 재료 |
| 제목 |
Structural characteristics of thermotropic SmA layer phase formed from rigid-rod polysilanes |
| 초록 |
We synthesized the helical poly[n-decyl-2-methylpropylsilane] with a wide variety of molecular weights of 13,700 to 151,000 and the narrow molecular weight distributions of 1.07 to 1.39. Together with a clarification of their thermotropic phase behavior with columnar-SmA-nematic-isotropic phase sequence, the layer structure of the SmA phase was analyzed by small-angle X-ray and AFM methods. AFM images show that the SmA layer structure is regularly formed from all the polymers. The layers are regularly piled up throughout the area of 10x10 m2 without significant defects and the long correlation length along the layer is beyond 10 m even for the high molecular weight polymers irrespective of a very small number density of polymer ends. The layer thickness varying from 10 to 110 nm nearly corresponds to the molecular length. |
| 저자 |
Junji Watanabe |
| 소속 |
Tokyo Institute of Technology |
| 키워드 |
polysilane; rigid-rod polymer; thermotropic liquid crystal/; smectic phase; AFM image
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| E-Mail |
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