Polarization-selective photosensitization and formation of surface relief gratings in photoreactive polymer liquid crystal films

光反应聚合物液晶薄膜中的偏振选择性光敏和表面浮雕光栅的形成

• 批准号: 15550187
• 负责人: KAWATSUKI Nobuhiro
• 金额: $ 1.98万
• 依托单位: University of Hyogo (2004)Himeji Institute of Technology (2003)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15550187/
• 关键词: Polymer liquid crystal; Photoinduced reorientation; Polarization selective photosensitization; Polarization grating; Birefringent film; 光増感; ホログラフィー; 偏光; 回折格子; 表面レリーフ

Thermally enhanced photoinduced reorientation of photocrosslinkable polymer liquid crystal(PLC) film doped with small amount of triplet photosensitizers by irradiating with a linearly polarized ultraviolet(LPUV) light and subsequent annealing is described. The axis-selectively photocrosslinked mesogenic groupsact as "photocrosslinked anchor", which was photoreacted by the polarization-preserved photosensitization reaction, reorient mesogenic groups parallel to the polarization of LPUV light. Adjusting the exposure angle and degree of the photoreaction realized a three-dimensional molecular orientation. Using a periodic exposure technique pure polarization hologram was successfully developed and surface relief formation can be achieved by the intensity irradiating.

采用线偏振紫外（LPUV）光照射和退火的方法，研究了掺杂少量三态光敏剂的光交联聚合物液晶（PLC）薄膜的热增强光致重定向。轴选择性光交联介生基团作为“光交联锚”，通过保持偏振的光敏反应，使介生基团平行于LPUV光的偏振方向重新定向。通过调整曝光角度和光反应程度，实现了分子的三维定向。利用周期曝光技术成功地开发了纯偏振全息图，并通过强照射实现了表面浮雕的形成。

项目成果

Photocontrol of Birefringence and In-plane Molecular Orientation in Copolymer Liquid Crystal Films with 4-Methoxyazobenzene and Photo-Cross-Linkable Side Groups

具有 4-甲氧基偶氮苯和可光交联侧基的共聚物液晶薄膜中双折射和面内分子取向的光控制

• 发表时间: 2003
• 期刊: Macromol.Chem.Phys. 204
• 作者: N.Kawatsuki;E.Uchida;T.Yamamoto
• 通讯作者: T.Yamamoto

H.Ono, A.Tamoto, N.Kawatsuki, T.Hasegawa: "Highly stable polarization gratings in photo-cross-linkable polymer liquid crystals"Journal of Applied Physics. 94, 3. 1295-1303 (2003)

H.Ono、A.Tamoto、N.Kawatsuki、T.Hasekawa：“光交联聚合物液晶中的高度稳定的偏振光栅”应用物理学杂志。

N.Kawatsuki, E.Uchida, H.Ono: "Photoinduced reorientation of polymethacrylate film with 4-methoxyazobenzene side groups using linearly polarized He-Ne laser and annealing"Chemistry Letters. 33, 1. 12-13 (2004)

N.Kawatsuki、E.Uchida、H.Ono：“使用线性偏振 He-Ne 激光和退火对具有 4-甲氧基偶氮苯侧基的聚甲基丙烯酸酯薄膜进行光诱导重新取向”《化学快报》。

Formation of polarization gratings and surface relief gratings in photocrosslinkable polymer liquid crystals by polarization holography

• DOI: 10.1002/adma.200304988
• 发表时间: 2003-06-17
• 期刊: ADVANCED MATERIALS
• 影响因子: 29.4
• 作者: Kawatsuki, N;Hasegawa, T;Tamoto, T
• 通讯作者: Tamoto, T

Formation of pure polarization gratings in 4-methoxyazobenzene containing polymar films using off-resonant laser light

使用非共振激光在含 4-甲氧基偶氮苯的聚合物薄膜中形成纯偏振光栅

• 发表时间: 2003
• 期刊: Appl.Phys.Lett. 83
• 作者: N.Kawatsuki;E.Uchida;H.Ono
• 通讯作者: H.Ono