Photochemical cross-linkable polymers, methods of making photochemical cross-linkable polymers, methods of using photochemical cross-linkable polymers, and methods of making articles containing photochemical cross-linkable polymers

A structure, comprising:

• a surface having a polymer, wherein the polymer comprises a linear or branched polyethylenimine polymer that has been quaternized with a hydrophobic side chain moiety (R1) and a photo cross-linkable moiety (B), wherein the polymer is covalently attached to the surface through the photo cross-linkable moiety, and wherein the structure has an antimicrobial characteristic, wherein the linear or branched polyethylenimine polymer has the following structure:
• wherein R1 is a hydrocarbon chain including a C═C group in the chain, wherein R2 is a hydrocarbon carbon chain linking moiety, saturated or unsaturated, wherein the structure is selected from the group consisting of:
• a fabric, a textile article, a natural fiber, a synthetic fiber, a porous membrane, a plastic structure, a oxide structure having a functionalized layer on the surface of the structure, a metal structure having a functionalized layer on the surface of the structure, a glass structure having a functionalized layer on the surface of the structure, and a combination thereof.