Slip ring supramolecular gel film with rapid photoresponse performance and preparation method thereof

The invention discloses a slip ring supramolecular gel film with rapid light response performance and a preparation method. The preparation method comprises the following steps: by taking acrylamide jointly functionalized by azobenzene and benzyl isocyanate and acrylamide functionalized by beta-cyclodextrin as reaction monomers, forming a sliding subject-object cross-linked structure through pre-inclusion of azobenzene and cyclodextrin, and initiating free radical polymerization by utilizing potassium persulfate to form a supramolecular polymer; and finally, precipitating the obtained polymer with acetone, washing, fully swelling in water, spreading and drying to obtain the gel film. The gel film has rapid photoresponse performance, can be rapidly bent to 40 degrees in the light source direction within 0.5 s under 365 nm illumination, and can realize film overturning and other motions under ultraviolet illumination; meanwhile, the high tensile strength of 15 MPa, the elongation at break of 150% and the Young