2D13 ポリイミド配向膜の異万的な光酸化アブレーションによるネマチック液晶の配向制御

概要

論文の詳細を見る
The alignment of a nematic liquid crystal (LC) could be induced by polyimide (PI) with a benzophenone moiety exposed to linearly polarized ultraviolet (UV) light of long wavelength (366 nm). Infrared (IR) spectroscopy indicated that the PI film was sensitive to UV radiation and susceptible to remarkable ablation after irradiation with the linearly polarized light (LPL) in air. Furthermore, the PI film irradiated under vacuum showed little reduction in intensity of IR bands, which is in sharp contract to the marked decreases in samples irradiated in atmospheres containing oxygen. This proves that oxygen is necessary to the photodegradation process of the PI film. Our results indicate that mechanism of the LC alignment on the photosensitive PI film is anisotropic photooxidation of the PI film.
日本液晶学会の論文
1998-10-12