Alignment of Photoreactive Polymer Liquid Crystals by Ultra Violet Light

紫外光光反应聚合物液晶的排列

• 批准号: 11650933
• 负责人: KAWATSUKI Nobuhiro
• 金额: $ 1.66万
• 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: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650933/
• 关键词: Photoreaction; Photoalignment; Polymer Liquid Crystal; Liquid Crystal Display; Photo-cross-linking; 偏光; 液晶; 配向フィルム

We investigated photorientation of polymer liquid crystal films and alignment control of liquid crystal (LC) on photo-cross-linkable polymer films using a slantwise nonpolarized ultraviolet (NP-UV) light irradiation. A polymer having several kinds of photoreactive mesogenic groups, such as 6-[4-(4'-methoxycinnamoyloxy) biphenyloxy] hexyl side-group, anthracene-containing side group or coumarin containing side groups. In addition, copolymers with methacrylate derivatives comprising photoinactive side-groups were also synthesized and used for the experiments. We clarified that the mesogenic side groups could align by the use of non polarized UV light as well as the sue of polarized UV light. Further, the LC aligned homogeneously or homeotropically with tilt angles, and the alignment behavior was dependent on the type of the (co) polymers and LCs.

研究了非偏振紫外光（NP-UV）倾斜照射下聚合物液晶薄膜的光取向和光交联聚合物薄膜上液晶的取向控制。一种具有多种光反应性介晶基团的聚合物，如6-[4-（4 ′-甲氧基肉桂酰氧基）联苯氧基]己基侧基、含蒽侧基或含香豆素侧基。此外，还合成了具有包含光非活性侧基的甲基丙烯酸酯衍生物的共聚物并用于实验。我们阐明了介晶侧基可以通过使用非偏振紫外光以及偏振紫外光的作用来排列。此外，液晶取向均匀或垂面与倾斜角，和取向行为是依赖于（共）聚合物和液晶的类型。

项目成果

N.Kawatsuki, H.Takatsuka and T.Yamamoto: "Inclined Homeotropic Alignment Control of Liquid Crystals on Photo-Cross-Linked Polymer Film by Slantwise Nonpolarized Ultraviolet Light Irradiation."Jpn.J.Appl.Phys. 39. 230-232 (2000)

N.Kawatsuki、H.Takatsuka 和 T.Yamamoto：“通过倾斜非偏振紫外线照射对光交联聚合物薄膜上液晶的倾斜垂直排列控制。”Jpn.J.Appl.Phys。

N.KAWATSOKI,H.TAKATSOKA T.YAMAMOTO: "Coplanar-alignment of mesogenic moieties in a photocross linked liquid crystalline polymer film containg cinnamoyl groups"Applied Physics Letters. 75・10. 1386-1389 (1999)

N. KAWATSOKI、H. TAKATSOKA T. YAMAMOTO：“含有肉桂酰基的光交联液晶聚合物薄膜中的介晶部分的共面排列”应用物理快报 75・10（1999）。

N.Kawatsuki,T.Yamamoto,H.Ono.: "Optical Anisotropy of Photo Cross Linkable Polymer Film and Photaligment Control of Nematic Liquid Crystals Using Non Polarized VD iraddation"Polymer Journal. 31.7. 630-632 (1999)

N.Kawatsuki、T.Yamamoto、H.Ono.：“可光交联聚合物薄膜的光学各向异性和使用非偏振 VD 照射对向列液晶的光配向控制”聚合物杂志。

N.KAWAATSOKI,H.TAKATSUKA,T.YAMAMOTO: "Coplanar alignment of mesogenic moieties in a photo cross-linked liquid crystalline polymer film containing cinnamoyl groups"Applied Physics Letters. 75・10. 1386-1389 (1999)

N.KAWAATSOKI、H.TAKATSUKA、T.YAMAMOTO：“含有肉桂酰基的光交联液晶聚合物薄膜中的介晶部分的共面排列”应用物理快报 75・10（1999）。

N.Kawatsuki, T.Arita, Y.Kawakami and T.Yamamoto: "Photoalignment of Liquid Crystals on Photo-Cross-Linkable Polymer Films with Anthracene at the End of the Side Group"Jpn.J.Appl.Phys.. 39. 5943-5946 (2000)

N.Kawatsuki、T.Arita、Y.Kawakami 和 T.Yamamoto：“在侧基末端具有蒽的可光交联聚合物薄膜上液晶的光排列”Jpn.J.Appl.Phys.. 39。