Optically Tunable Multifunctional Film based on Photo-Functionalized Asymmetric Amphiphile
발표자
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초록
내용
The asymmetric amphiphile with photo-isomerizable azobenzene and the photo-polymerizable diacetylene (abbreviated AZDA) was synthesized to develop the optically tunable thin films. At higher temperatures, the AZDA molecules formed the layer structure in the smectic A LC phase. The highly ordered crystalline phase is formed at lower temperatures. To fabricate a remote-controllable light shutter, the AZDA compound is injected into the optical cell. The transmittance of the optical cell shows photo-reversible switching properties by alternating UV and visible light irradiation. Due to the densely packed structure, the AZDA-polydiacetylene is formed as the consequence of the 1,4-addition reaction of the diyne groups of AZDA compounds upon 254 nm UV light irradiation. The AZDA-polydiacetylene shows reversible thermochromic behaviors caused by varying effective conjugation lengths. This work was supported by Mid-Career Researcher Program (2021R1A2C2009423).