High performance photomanipulation in photo-cross-linkable polymer liquid crystals

可光交联聚合物液晶的高性能光操纵

• 批准号: 13650957
• 负责人: KAWATSUKI Nobuhiro
• 金额: $ 1.79万
• 依托单位: Himeji Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650957/
• 关键词: Photo orientation; Polyme Liquid Crystal; Photoreaction; Birefringent Film; Self-organization; 偏光; 偏光光

In this research project, I aimed to create new photoreactive polymer liquid crystals which generate high order of photoinduced reorientation. For example, reversion of the in-plane reorientation direction of mesogenic groups has been observed for the first time in novel polymethacrylate liquid crystal (PLC) films substituted with a 4-methoxycinnamoyloxybiphenyl side group. The reversion was generated by irradiation with linearly polarized ultraviolet (LPUV) light and a subsequent annealing. Irradiation with LPUV light induces negative optical anisotropy of the films as a result of an axis-selective photoreaction of the side groups. The direction of the thermally enhanced reorientation is dependent on the degree of photoreaction and the distribution of photoproducts, while the induced orientational order in both directions, S, was larger than 0.5. Additionally, three-dimensional reorientation cane be realized and the resultant film showed good applicability to birefringent film for LCDs.

在这个研究项目中，我的目标是创造新的光反应性聚合物液晶，它可以产生高阶的光诱导重定向。例如，在用4-甲氧基肉桂酰氧基联苯取代的新型聚甲基丙烯酸酯液晶（PLC）薄膜中，首次观察到介晶基平面内取向的逆转。通过线偏振紫外线（LPUV）光照射和随后的退火产生逆转。由于侧基的轴向选择性光反应，LPUV光照射引起薄膜的负光学各向异性。热增强取向的方向与光反应的程度和光产物的分布有关，两个方向的诱导取向顺序S均大于0.5。此外，还可以实现三维定向，所制备的薄膜对lcd双折射薄膜具有良好的适用性。

项目成果

N.Kawatsuki, T.Hasegawa, H.Ono, T.Yamamoto: "Scattering Type Polarizer Based on Polymer Blend of Photo Cross linkable Polymer and Photoinactive Polymer"Chemistry Letters. 12. 1256-1257 (2002)

N.Kawatsuki、T.Hasekawa、H.Ono、T.Yamamoto：“基于光可交联聚合物和光惰性聚合物的聚合物混合物的散射型偏振器”化学快报。

N. Kawatsuki, T. Hasegawa, H. Ono, T. Tamoto: "Polarization triplet transfer and thermally enhanced photoinduced molecular reorientation in a photo-cross-linkable polymer liquid crystal by irradiating with linearly polarized light"Adv. Mater..

N. Kawatsuki、T. Hasekawa、H. Ono、T. Tamoto：“通过线偏振光照射，可光交联聚合物液晶中的偏振三重态转移和热增强光诱导分子重新取向”Adv。

N.Kawatsuki, K.Goto, T.Kawakami, T.Yamamoto: "Reversion of Alignment Direction in the Thermally Enhanced Photoorientation of Photo-Cross-Linkable Polymer Liquid Crystal"Macromoleculs. 35・3. 706-713 (2002)

N.Kawatsuki、K.Goto、T.Kawakami、T.Yamamoto：“可光交联聚合物液晶的热增强光取向中的取向方向反转”35・3（2002）。

N.Kawatsuki, N.Furuso, E.Uchida, T.Yamamoto: "Control of In-Plane and Out-Of-Plane Reorientation in Photo-Cross-Linkable Copolymer Liquid-Crystal Films"Macromolecur Chemistry and Physics. 203・17. 2438-2445 (2002)

N.Kawatsuki、N.Furuso、E.Uchida、T.Yamamoto：“光可交联共聚物液晶薄膜中面内和面外重新取向的控制”高分子化学和物理203・17。 2438-2445 (2002)

N. Kawatsuki, T. Sakai, M. X. An, T. Hasegawa, T. Yamamoto: "Optical birefringent film by photoreactive high-and low-molecular liquid crystal composites (invited paper)"Proc. SPIE. 4663. 109-116 (2001)

N. Kawatsuki，T. Sakai，M. X. An，T. Hasekawa，T. Yamamoto：“光反应性高低分子液晶复合材料的光学双折射薄膜（特邀论文）”Proc。