Transition metal oxide complex coupling agents coated on siliceous substrates

A method of coating a siliceous substrate having a film of a transition metal oxide thereon comprising:

• a. complexing on the surface of said siliceous substrate the said film of a transition metal oxide with an ortho-functional monocyclic aromatic compound in which the ortho substituents have unshared electrons to form a 1:1 complex, and
• b. heating the complexed substrate to render the complex hydrolytically stable, thus forming a coating on said siliceous substrate,
• the 1:1 complex permitting the transition metal atom to bond by means of an oxygen atom to other transition metal atoms on the surface of the siliceous substrate, the ortho-functional monocyclic aromatic compound when complexed with the transition metal oxide forms resultant 5, 6 or 7 membered rings and the ortho-functional monocyclic aromatic compound also containing an additional functional group which is reactive with organic materials, said functional organic group selected from the class consisting of amine, imine, polyamine, polyimine, chloro-containing, thio-containing, olefinic-containing, epoxy-containing or hydroxyl-containing.

A method of coating a siliceous substrate having a film of a transition metal oxide thereon consisting of:

• a. complexing at the surface of said siliceous substrate the said film of a transition metal oxide with an ortho-functional phenolic or resorcinolic resin in which the ortho substituents have unshared electrons to form a 1:1 complex, and
• b. heating the complexed substrate to render the complex hydrolytically stable, thus forming a coating on said siliceous substrate,
• the 1:1 complex permitting the transition metal atom to bond by means of an oxygen atom to other transition metal atoms on the surface of the siliceous substrate, and the ortho-functional phenolic or resorcinolic resin when complexed with the transition metal oxide forms resultant 5, 6 or 7 membered rings.