Patent ID: 7807661

Claim:
A wound dressing comprising a biologically-active article, the biologically-active article comprising a substrate having a substrate surface, and a silver ion releasing chromonic material disposed adjacent to the substrate surface, wherein the silver ion releasing chromonic material comprising a chromonic compound and a silver ion source, wherein the silver ion source is an antimicrobial agent, wherein the release of silver ions from the silver ion source is moisture activated, and wherein the silver ion releasing chromonic materials is represented at least one of the following general structures: wherein for structure I, each R 2 is independently selected from the group consisting of electron donating groups, electron withdrawing groups, and electron neutral groups; R 3 is selected from the group consisting of substituted and unsubstituted heteroaromatic rings and substituted and unsubstituted heterocyclic rings, these rings being linked to the triazine group through a nitrogen atom within the ring of R 3 , and M + is a silver metal cation; wherein for structure II, each R 2 is independently selected from the group consisting of electron donating groups, electron withdrawing groups, and electron neutral groups; R 3 is selected from the group consisting of substituted and unsubstituted heteroaromatic rings and substituted and unsubstituted heterocyclic rings, these rings being linked to the triazine group through a nitrogen atom within the ring of R 3 ; and M + is a silver metal cation; wherein for structure III, M + is a silver metal cation; and X − is a counterion; and wherein for structure IV, M + is a silver metal cation.