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Crosslinked liquid-crystalline polymer film (CLCP) was prepared by thermal polymerization of the mixture of an
acrylate monomer and diacrylate crosslinker containing azotolane chromophores. Mesomorphic properties were studied
using a polarizing optical microscope and a polarized UV-Vis absorption spectrometer. Due to a longer conjugated
structure of the azotolane moieties in side chains, the CLCP film underwent photoinduced bending upon exposure to
short-wavelength visible light at 436 nm and the deformable film returned to its initial flat state completely by alternating
visible light to 577 nm. It was also observed that the bending process was accelerated by increasing the light intensity
and the temperature. And the maximum force generated in the film upon photoirradiation decreased with the increase of
the temperature and increased with the increment of the light intensity. In addition, a visible-light-driven microrobot was
prepared from CLCP and polyethylene bilayer films, which could successfully lift and move an object through its "head".
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