Anti-microbial polymer incorporating a quaternary ammonium group

An anti-microbial polymer, comprising polymerizable units of

• i) at least one monomer comprising a polymerizable aromatic moiety containing an aromatic group, wherein the aromatic group is covalently incorporated into the polymer backbone through loss of aromaticity, and wherein the aromatic group comprises a quaternary aromatic ammonium or phosphonium salt, a quaternary aromatic ammonium or phosphonium salt, or quinone or quinone derivative;
• and
• wherein the monomer further comprises an anti-microbial moiety, wherein the anti-microbial moiety is a quaternary ammonium moiety or a quaternary phosphonium moiety.