| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Synthesis and Characteristics of Photocrosslinking Polymer for LC alignment |
| 초록 | Photoreactive polymers with optical anisotropy, which may be applied as the photoalignment layer for liquid crystal display, were synthesized through reaction between epoxy and several kinds of cinnamate groups. The photoreactive polymer film was formed by spin-coating and then exposed to linearly polarized UV light. The optical anisotropy of the polymer film caused by the selective cycloaddition of the cinnamate groups was confirmed from the polarized UV-vis spectra. The polymer films irradiated by the polarized UV light showed anisotropic absorbance in the polarized UV-vis spectra, while the polymer irradiated by unpolarized UV exhibited isotropic absorbance. We also confirmed the photoreactive polymer film could align liquid crystal. LC cell fabricated using the polymer films irradiated by linearly polarized UV showed anisotropic transmission of the polarized visible light, while the cell fabricated using the polymer films irradiated by unpolarized UV exhibited isotropic transmission. Fig. 1. Polar diagram of a LC cell Fig. 2. Change of phase retardation of photocrosslinking polymer 참고문헌 1. S. I. Kim, M. Ree, T. J. Shin and J. C. Jung, J .Polym Sci, 37, 2909 (1999). 2. L. Yan, Q. Zhu, T, Ikeda, Polym. Int, 52, 265 (2003) 3. S. W. Lee, T. H. Chang, M. H. Ree, Macromol. Rapid Commun, 22, 941 (2001) 4. K. Ichmura, Chemical Review, 100, 1847 (2000). |
| 저자 | 서동교1, 성오현1, 김환건2, 송기국3, 이준영1 |
| 소속 | 1성균관대, 2서경대, 3경희대 |
| 키워드 | photoreactive polymer; cinnamate; optical anisotropy; photoalignment; LCD |
