合成了大螺旋扭曲力的手性化合物4,4'-2(戊基-环己基)苯甲酸异山梨醇酯(ISBB).对60.0μm厚ISBB/液晶性单体/向列相液晶/光引发剂复合体系的液晶层的上、下表面温度施加不同温度,液晶层中形成了温度梯度.由于高温区域的液晶溶解ISBB的能力强,低温区域的ISBB会向高温区域扩散,从而在液晶薄层中形成了ISBB的浓度梯度与螺距梯度.紫外光聚合复合体系中的光可聚合单体,单体间交联聚合形成网络固定住了液晶层内的螺距梯度,从而制备出反射可见光波段的右旋圆偏振光的宽波反射液晶薄膜.
参考文献
| [1] | Gennes P G,Prost J.The Physics of Liquid Crystals[M].Oxford:Oxford University Press,1993:264-271. |
| [2] | Elston S,Sambles R.The Optics of Thermotropic Liquid Crystals[M].London:Taylor & Francis,1998:233-245. |
| [3] | 张天翼,许军,董佳垚.胆甾型液晶显示技术和产业发展[J].液晶与显示,2011,26(6):741-745. |
| [4] | 黄维,边震宇,肖久梅,等.具有宽波反射特性的手征向列相液晶的研究进展[J].液晶与显示,2009,24(3):322-332. |
| [5] | Broer D J,Lub J,Mol G N.Wide band reflective polarizers from cholesteric polymer networks with a pitch gradient[J].Nature,1995,378(6556):467-469. |
| [6] | Mitov M,Boudet A,Sopena P.From selective to wide-band light reflection:a simple thermal diffusion in a glassy cholesteric liquid crystal[J].Eur.Phys.J.B,1999,8(3):327-330. |
| [7] | 李发胜,王磊,齐琳,等.紫外吸收染料诱导的具有宽波反射特性的胆甾相液晶聚合物薄膜[J].液晶与显示,2011,26(5):573-576. |
| [8] | 何正红,叶志成,苏翼凯,等.胆甾型液晶彩色滤光片分析[J].液晶与显示,2010,25(4):538-541. |
| [9] | Hu W,Zhao H,Song L,etal.Electrically controllable selective reflection of chiral nematic liquid crystal/chiral Ionic liquid composites[J].Adv.Mater.,2010,22(4):468-472. |
| [10] | Li L,Faris S M.Novel super broadband reflective polarizer[J].Proceedings of SPIE,1996,2873(1):202-205. |
| [11] | Hikmet R A M,Kemperman H.Electrically switchable mirrors and optical components made from liquid-crystal gels[J].Nature,1998,392(6675):476-479. |
| [12] | Lavernhe A,Mitov M,Binet C,et al.How to broaden the light reflection band in cholesteric liquid crystals? A new approach based on polymorphism[J].Liq.Cryst.,2001,28(5):803-807. |
| [13] | Yang H,Mishima K,Matsuyama K,etal.Thermally bandwidth-controllable reflective polarizers from (polymer network/liquid crystal/chiral dopant)composites[J].Appl.Phys.Lett.,2003,82(15):2407-2409. |
| [14] | Nouvet E,Mitov M.New optical memory effects in polymer-stabilized cholesteric liquid crystals due to pitch changes during the uv-curing[J].Mol.Cryst.Liq.Cryst.,2004,413(1):515-525. |
| [15] | Witte P V D,Brehmer M,Lub J.LCD components obtained by patterning of chiral nematic polymer layers[J].J.Mater.Chem.,1999,9(9):2087-2094. |
| [16] | Huang Y,Zhou Y,Wu S T.Broadband circular polarizer using stacked chiral polymer films[J].Opt.Express,2007,15(10):6414-6419. |
| [17] | Guillard H,Sixou P.Active broadband polymer stabilized liquid crystals[J].Liq.Cryst.,2001,28(6):933-944. |
| [18] | Bian Z Y,Li K X,Huang W,et al.Characteristics of selective reflection of chiral nematic liquid crystalline gels with a nonuniform pitch distribution[J].Appl.Phys.Lett.,2007,91(20):201908(1-3). |
| [19] | Zografopoulos D C,Kriezis E E,Mitov M,et al.Theoretical and experimental optical studies of cholesteric liquid crystal films with thermally induced pitch gradients[J].Phys.Rev.E,2006,73(6):061701(1-9). |
| [20] | Binet C,Mitov M,Boudet A.Bragg reflections in cholesteric liquid crystals:from selectivity to broadening and reciprocally[J].Mol.Cryst.Liq.Cryst.,2000,339(1):111-123. |
| [21] | Dyer D J,Schroder U P,Chan K P,et al.Polymer-stabilized reflective cholesteric displays:effects of chiral polymer networks on reflectance properties[J].Chem.Mater.,1997,9(7):1665-1669. |
| [22] | Nolan P,Parri O,May A,et al.手性掺加剂:中国,CN1223657[P].1999-07-21. |
| [23] | Kobayashi N,Hashimoto K,Hatano T.Cholesteric liquid crystal element having composite layer:United States,US6015507[P].2000-01-18. |
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