Polymeric coatings

A polymeric coating comprising:

• a copolymer of at least a first photoinitiator monomer and at least one second monomer, wherein the first photoinitiator monomer comprises formula (I):
• wherein Pi comprises a photoinitiator moiety;
• wherein linker Z in formula (I) comprises the structure:
• —C(R3)(R4)—Za—
• wherein the —C(R3)(R4)— moiety is linked to the acrylamide N-atom in formula (I);
• wherein Za comprises a linker moiety comprising a single bond, optionally substituted C1-C12 alkylene, optionally substituted C1-C12 alkenylene, —O—, —S—, —NRa—, —CO—NRa—, optionally substituted heterocyclyl, optionally substituted arylene, optionally substituted —[O—(C1-C12 alkylene)]n-, optionally substituted —[NR1—(C1-C2 alkylene)]n, optionally substituted —[S—(C1-C12 alkylene)]n-, and combinations thereof, wherein n is an integer from 1-20, and wherein Ra comprises H or an optionally substituted C1-C6 alkyl;
• R3 and R4 are each independently an optionally substituted C1-C6 alkyl;
• R1 comprises H or an optionally substituted C1-C6 alkyl;
• R2 comprises H;
• and
• wherein the at least one second monomer comprises an unsaturated C═C bond.

A polymeric coating comprising:

• a copolymer of at least a first photoinitiator monomer and at least one second monomer, wherein the first photoinitiator monomer comprises formula (Ib):
• wherein Za comprises a linker moiety comprising a single bond, —C1-C6 alkylene-, or —O—(C1-C6 alkylene)-;
• R1 comprises H or an optionally substituted C1-C6 alkyl;
• R2 is H;
• R3 and R4 each independently comprise H or methyl, provided that—when R3 and R4 are H—the adjacent Za is a single bond;
• X comprises one of:
• wherein each R comprises H or an optionally substituted C1-C6 alkyl;
• and
• wherein the at least one second monomer comprises an unsaturated C═C bond.