.790. 北京科技大学学报 第30卷 silsesquioxane.React Funct Polym.1999.39(1):1 3结论 [5]Baur G.Wittwer V,Berreman D W.Determination of the tilt angles at surfaces of subst rates in liquid crystal cells.Phys Lett A, 本文研究了取向剂浓度、紫外光辐照度及光照 1976,56(2):142 时间对LPS-CA30-11光取向层取向行为的影响， [6]Ichimura K.Photoalignment of liquid crystal systems.Chem 发现取向剂浓度越大越有利于取向层诱导液晶分子 Rem,2000,100(5):1847 形成垂直取向的分子排列方式，在一定的紫外光辐 [7]Yaroshchuk O.Chigrinov V.Nadtoka O.et al.Factors in liquid 照度范围内有利于取向层诱导液晶分子形成平面取 crystal photoalignment on polymer films:photoorientation versus 向的分子排列方式，增加光照时间有利于取向层诱 self-assembly.Lig Cryst.2006.33(2):149 [8]O'Neill M.Kelly S M.Photoinduced surface alignment for liquid 导液晶分子形成平面取向的分子排列方式， erystal displays.JPhys D.2000.33(10):R67 [9]Kawatsuki N.Goto K.Kawakami T,et al.Reversion of align- 参考文献 ment direction in the thermally enhanced photoorientation of pho- [1]Gibbons W M.Shannon P J.Sun S T,et al.Surface mediated to cross-linkable polymer liquid crystal films.Macromolecules, alignment of nematic liquid crystals with polarized laser light.Na 2002,35(3):706 ture,1991,351,49 [10]Kawatsuki N,Matsuyoshi K,Hayashi M.et al.Photoreaction [2]Schadt M.Schmitt K.Kozinkov V,et al.Surface induced paral- of photo cross-linkable methacrylate polymer films comprising 2- lel alignment of liquid crystals by linearly polymerized photopoly- cinnamoyloxyethoxybiphenyl side group by linearly polarized ul- mers.Jpn J Appl Phys.1992.31(7):2155 traviolet light and liquid crystal alignment on the resultant films [3]Schadt M.Seiberle H.Schuster A.Optical patterning of multi- Chem Mater,2000,12(6):1549 domain liquid-crystal displays with wide viewing angles.Nature, [11]Kawatsuki N,Takatsuka H.Yamamoto T.Thermally stable 1996,381,212 photoalignment layer of a novel photo crosslinkable poly- [4]Li Z,Cao X Y,Xu H.et al.Synthesis and characterization of re methacrylate for liquid crystal display.Ipn JAppl Phys.2001. active ladderlike polyallylsilsesquioxane and polyvinyl- 40(3A):L2093 结论 本文研究了取向剂浓度、紫外光辐照度及光照 时间对 LPS—CA—30—11光取向层取向行为的影响‚ 发现取向剂浓度越大越有利于取向层诱导液晶分子 形成垂直取向的分子排列方式‚在一定的紫外光辐 照度范围内有利于取向层诱导液晶分子形成平面取 向的分子排列方式‚增加光照时间有利于取向层诱 导液晶分子形成平面取向的分子排列方式． 参 考 文 献 ［1］ Gibbons W M‚Shannon P J‚Sun S T‚et al．Surface-mediated alignment of nematic liquid crystals with polarized laser light．Na￾ture‚1991‚351：49 ［2］ Schadt M‚Schmitt K‚Kozinkov V‚et al．Surface-induced paral￾lel alignment of liquid crystals by linearly polymerized photopoly￾mers．Jpn J Appl Phys‚1992‚31（7）：2155 ［3］ Schadt M‚Seiberle H‚Schuster A．Optical patterning of mult-i domain liquid-crystal displays with wide viewing angles．Nature‚ 1996‚381：212 ［4］ Li Z‚Cao X Y‚Xu H‚et al．Synthesis and characterization of re￾active ladderlike polyallylsilsesquioxane and polyvinyl￾silsesquioxane．React Funct Polym‚1999‚39（1）：1 ［5］ Baur G‚Wittwer V‚Berreman D W．Determination of the tilt angles at surfaces of substrates in liquid crystal cells．Phys Lett A‚ 1976‚56（2）：142 ［6］ Ichimura K．Photoalignment of liquid-crystal systems． Chem Rev‚2000‚100（5）：1847 ［7］ Yaroshchuk O‚Chigrinov V‚Nadtoka O‚et al．Factors in liquid crystal photoalignment on polymer films：photoorientation versus self-assembly．L iq Cryst‚2006‚33（2）：149 ［8］ O’Neill M‚Kelly S M．Photoinduced surface alignment for liquid crystal displays．J Phys D‚2000‚33（10）：R67 ［9］ Kawatsuki N‚Goto K‚Kawakami T‚et al．Reversion of align￾ment direction in the thermally enhanced photoorientation of pho￾to-cross-linkable polymer liquid crystal films． Macromolecules‚ 2002‚35（3）：706 ［10］ Kawatsuki N‚Matsuyoshi K‚Hayashi M‚et al．Photoreaction of photo-cross-linkable methacrylate polymer films comprising2- cinnamoyloxyethoxybiphenyl side group by linearly polarized ul￾traviolet light and liquid crystal alignment on the resultant films． Chem Mater‚2000‚12（6）：1549 ［11］ Kawatsuki N‚Takatsuka H‚Yamamoto T．Thermally stable photoalignment layer of a novel photo-crosslinkable poly￾methacrylate for liquid crystal display．Jpn J Appl Phys‚2001‚ 40（3A）：L209 ·790· 北 京 科 技 大 学 学 报 第30卷