Oh Su Yeon, Kang Shin-Woong
Opt Express. 2013 Dec 16;21(25):31367-74. doi: 10.1364/OE.21.031367.
Photo-reactive self-assembled monolayer (PR-SAM) is employed to mediate alignment of liquid crystals (LC) and stabilize the tilt orientation of a nematic director for a vertically aligned liquid crystal. Bifunctional PR-SAM formed by silane coupling reaction to oxide surfaces efficiently induces a homeotropic alignment and stabilizes LC director by the photo-polymerization under applied electric field. As a result, the substantial enhancement of electro-optic performance has been achieved after the PR-SAM assisted stabilization of tilt orientation of director. This approach for pretilt stabilization has multifarious advantages over the conventional PSVA.
光反应性自组装单分子层（PR-SAM）被用于介导液晶（LC）的取向，并稳定垂直排列液晶中向列型指向矢的倾斜取向。通过硅烷偶联反应在氧化物表面形成的双功能PR-SAM在施加电场下通过光聚合有效地诱导垂直取向，并稳定液晶指向矢。结果，在PR-SAM辅助稳定指向矢倾斜取向之后，实现了电光性能的显著增强。这种预倾斜稳定方法相对于传统的聚合物稳定垂直取向（PSVA）具有多种优势。
