Polydopamine nanobelt and preparation method thereof

The invention discloses a polydopamine nanobelt and a preparation method thereof, the preparation method comprises the following steps: S1, splicing a flaky DNA origami structure through a DNA connecting chain to obtain a spliced DNA origami template; and S2, carrying out in-situ polymerization on the surface of the spliced DNA origami template to prepare a polydopamine nano material, so as to obtain the polydopamine nanobelt structure, wherein the sequence structure of the DNA connecting chain is as shown in Seq ID (Identity) No. 1 to Seq ID No. 23. According to the scheme, after DNA origami structures are ingeniously spliced into the strip-shaped nanostructure, the polydopamine nanoribbon structure is prepared on the surface of the strip-shaped nanostructure through in-situ polymerization, the problem that the strip-shaped polydopamine nanostructure is difficult to obtain through a traditional method is solved, and the method is easy and convenient to operate and low in cost. 本发明公开了一种聚多巴胺纳米带及其制备方法，所述制备方法包括如