METHOD FOR PREPARING AN OXIDE FILM ON A POLYMERIC SUBSTRATE

摘要

Various embodiments refer to a method for preparing an oxide film on a polymeric substrate, wherein the oxide film is a titanium oxide film (which is optionally niobium- or silicon- doped) or silicon oxide film. The method comprises contacting a polymeric substrate with a liquid reagent comprising a polyalkoxysilane such as 3-aminopropyltriethoxysilane to form a Iayer of the polyalkoxysilane on the polymeric substrate by self-assembly, and contacting said Iayer with an aqueous mixture comprising (i) titanium tetrafiuoride and/or a fluorine-containing titanium complex such as ammonium hexafluorotitanate and/or a fluorine-containing silicon complex such as ammonium hexafluorosilicate, and (ii) a fluorine scavenger such as boric acid, at a temperature of less than about 100 °C to obtained the oxide film on the polymeric substrate. An oxide film prepared by said method is also provided.