Patent ID: 8257662

Claim:
A process for producing a nanostructure composite-covered structure including: a step (I-1) in which a solid substrate (X), which is a substrate selected from the group consisting of glass substrates, metal substrates, metal oxide substrates, glass substrates having an etched surface, resin substrates, resin substrates having a surface treated by plasma, resin subtrates having a surface treated by ozone, and resin substrates having a surface treated by sulfuric acid, and resin substrates having a surface treated by alkali, is immersed into a solution containing a polymer (A) having a polyethyleneimine skeleton (a), the solid substrate (X) is taken out of the solution, and a polymer layer is formed on the surface of the solid substrate (X); and a step (I-2) in which the solid substrate (X) having the polymer layer obtained in the step (I-1) is contacted with a source solution (B′) of metal oxide to deposit metal oxide (B) in the polymer layer on the surface of the solid substrate (X) and to form on the solid substrate a nanostructure composite (Y) containing the polymer (A) and the metal oxide (B), wherein the nanostructure composite (Y) is an aggregate containing a composite nano-fiber (y 1 ), a composite nano-particle (y 2 ), or a composite nano-film (y 3 ) as a basic unit of the nanostructure composite (Y), wherein the composite nano-fiber (y 1 ) has a thickness in a range of from 10 to 100 nm and a length in a range of from 50 nm to 10 μm, and wherein the composite nano-film (y 3 ) forms a nano-film on the surface of the solid substrate (X), and the film forms a maze containing plural boundaries over the entire surface of the solid substrate (X), and a height of boundaries is in a range of from 100 nm to 2,000 nm, and an interval between the boundaries is in a range of from 200 nm to 5 μm.