Photo-Responsive Liquid Crystal Elastomers Prepared from Hockey-Stick-Shaped Reactive Mesogen
발표자
()
초록
내용
Recently, many studies have been reported on soft actuators whose shape is reversibly changed by various external stimuli. In particular, photosensitive LCEs (Liquid Crystalline Elastomers) with azobenzene can be controlled remotely via light. In many studies, an acrylate-based LCEs containing RM257 and an azobenzene derivative were reported. In this study, LCEs prepared from mixtures based on RM1 (Reactive Mesogen) having rod-like mesogen, RM2 of azobenzene derivative, and RM3 having hockey stick-shaped mesogen were prepared. The structure of RMs was identified by FT/IR and 1H-NMR. The liquid crystalline and thermal properties were investigated by DSC and POM. By increasing the mixing ratio of RM3, the photo-response property of LCE films that were surface aligned and photo cured at an appropriate UV wavelength was investigated.