Patent ID: 8377672

Claim:
A functionalized substrate comprising a porous base substrate and a grafted or ungrafted coating of a carbonyl-functional (co)polymer functionalized with pendent guanidinyl groups on the surface thereof, said pendent guanidinyl groups are of the formula: wherein R 1 is H, C 1 -C 12 alkyl, or C 5 -C 12 (hetero)aryl, R 2 is a covalent bond, a C 2 to C 12 alkylene, or a C 5 -C 12 (hetero)arylene, a R 9 is C 2 to C 12 alkylene or C 5 -C 12 (hetero)arylene, each R 3 is independently H, —OH, C 1 -C 12 alkyl, or C 5 -C 12 (hetero)aryl, each R 4 is H, C 1 -C 12 alkyl, C 5 -C 12 (hetero)aryl, or —N(R 3 ) 2 .