| 초록 |
For the fabrication of remote-controllable actuaors, a dendronized polynorbornene (denpol) is newly designed and successfully synthesized using azobenzene-based macromonomers. The programmed denpol (ADP) was produced using ring opening metathesis polymerization (ROMP) to gain complete conversion. To investigate the molecular packing structures, we employed the 2D wide angel x-ray diffraction (2D WAXD) and the uniaxially oriented ADP film has three different layered hierarchical superstructures according to temperature. ADP free standing film was fabricated by melt scraping process. When UV light is irradiated in a direction perpendicular to the film surface, the ADP film induces anisotropic volume contraction and bent away from the light source because the original alignment of the azobenzene mesogen was parallel to the film normal direction. This work was supported by the BK21 Plus, the BRL 2015042417, Mid-Career Researcher Program (2016R1A2B2011041). |
