Macromolecular Rapid Communications · 1998 · 37 citations · 0 references
Natural SciencesChemistryMaterials ScienceOptical MaterialsPolymer ChemistryPolymer MaterialsLiquid Crystal MaterialsLiquid CrystalsOptical PolymersPolymer ConformationPolymer PhysicsPolymer StructureChiral Optical PolymersLiquid Crystal AlignmentLiquid Crystal Optical AnisotropyLiquid Crystal TuningLiquid Crystalline PolymersPhotopolymer MaterialsPhotopolymerizationPolymer Crystal Orientation
The linearly polarized light induced photoalignment of liquid crystals is critically influenced by the structure of polymethacrylates with coumarin side chains. While the photoalignment direction is in parallel with the electric vector of linearly polarized 313 nm light for polymethacrylates having coumarin moieties with ethylene and hexamethylene spacers, the reversion of photoalignment from parallel into perpendicular orientation is observed for a polymethacrylate having coumarin side chains without spacer.