Remote Controllable Photoactuators Based on Dendronized Polynorbornenes with Azobenzene
발표자
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초록
내용
Dendronized polynorbornene (P-TAzo) with azobenzene-based macromonomers was designed and successfully synthesized for the fabrication of remote controllable photoactuators. Low polydispersity (PDI) and defined molecular weights of P-TAzo were obtained through ring opening metathesis polymerization (ROMP). The uniaxially orientation and the layered superstructures of P-TAzo film were identified through 2D wide angle X-ray diffractions (2D WAXD) and thermal behaviors. The trans-to-cis photoisomerization of azobenzene was identified through UV-Vis spectroscopy. When exposed to UV light, the P-TAzo film was bent in the direction of light and photoactuation was confirmed. This remote controllable photoactuation can be applied to the device constituting the light-emitting diode (LED) circuit using photo-responsive actuations, and the switching of the electric circuit can be controlled by UV and visible light. This work was supported by Mid-Career Researcher Program (2021R1A2C2009423).