Polymer ultrathin film and porous polymer ultrathin film

摘要

An object of the present invention is to provide a porous polymer ultrathin film and a method for producing a porous polymer ultrathin film. The present invention provides a porous ultra-thin polymer film having a thickness of 10 nm to 1000 nm. The present invention also includes a step of dissolving two kinds of polymers that are not mixed with each other in a first solvent in an arbitrary ratio to obtain a solution, and applying the solution to the substrate, and the first solution from the solution applied to the substrate. Removing the solvent to obtain a polymer ultrathin film phase-separated into a sea-island structure; and a second solvent that is a good solvent for the polymer on the island and a poor solvent for the polymer other than the island. A method for producing a porous ultra-thin polymer film is provided, including a step of immersing the ultra-thin molecular film to obtain an ultra-thin polymer film by removing islands.