Patent ID: 7166241

Claim:
A structure comprising a substrate, at least part of the surface of said substrate having disposed thereon a water-soluble, electrically conductive composition of matter comprising a polyacid selected from the group consisting of of poly(acrylic acid), poly(methacrylic acid), poly(styrenesulfonic acid), poly(vinylsulfonic acid), poly(styrene boric acid), poly(vinyl boric acid), poly(vinyl sulfuric acid), poly(styrene phosphoric acid), poly(vinyl phosphoric acid), poly(styrene phosphonic acid) and poly(vinyl phosphonic acid) and a polymer comprising at least one conjugated region composed of repeating units which contain a conjugated basic atom, wherein said polymer is selected from the group consisting of substituted and un-substituted homopolymers and copolymers of aniline, thiophene, pyrrole, and p-phenylene sulfide, wherein said composition of matter is capable of forming a stable 5 wt. % solution in water, wherein the number of acidic groups in said polyacid exceeds the number of protonatable basic atoms in said polymer.