Photo‐Induced Orientation of a Film of Ladderlike Polysiloxane Bearing Dual Photoreactive Side Groups
- 15 August 2003
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 15 (16) , 1355-1358
- https://doi.org/10.1002/adma.200305241
Abstract
A newly designed ladder‐like polysiloxane (LPS) containing dual photoreactive side groups has been synthesized for the purpose of generating high‐quality photo‐alignment layers with controllable pretilt angle (∼ 1–7°, see Figure and cover). Integrated spectroscopic methods of UV dichroism, surface‐enhanced Raman scattering (SERS), and FT‐IR are used together for the first time to elucidate the photo‐alignment mechanism and the real cause of the high pretilt angle.Keywords
This publication has 23 references indexed in Scilit:
- Influence of Structures of Polymer Backbones on Cooperative Photoreorientation Behavior of p-Cyanoazobenzene Side ChainsMacromolecules, 2001
- In-Plane and Tilt Reorientation of p-Methoxyazobenzene Side Chains Tethered to Liquid Crystalline Polymethacrylates by Irradiation with 365 nm LightMacromolecules, 2000
- A Combined Method Based on Rubbing and UV-Irradiation for Preparing Stable Alignment-Layers with High Pretilt AnglesMolecular Crystals and Liquid Crystals, 1999
- Reversion of Photoalignment Direction of Liquid Crystals Induced by Cinnamate Polymer FilmsJapanese Journal of Applied Physics, 1999
- Synthesis and characterization of reactive ladderlike polyallylsilsesquioxane and polyvinylsilsesquioxaneReactive and Functional Polymers, 1999
- Stable photoalignment layer for nematic liquid crystals based on ladder-like polysilsesquioxanesLiquid Crystals, 1998
- Surface studies of polyimide thin films via surface-enhanced Raman scattering and second harmonic generationMacromolecular Rapid Communications, 1998
- Functionalization and application of ladder-like polysilsesquioxanesPolymers for Advanced Technologies, 1997
- Command surfaces, 10. Novel polymethacrylates with laterally attached azobenzene groups displaying photoinduced optical anisotropyMacromolecular Rapid Communications, 1995
- Surface-mediated alignment of nematic liquid crystals with polarized laser lightNature, 1991