Biologically-active polymers

A polymer composition comprising a polymer and an antibody, wherein the polymer is selected from the group consisting of polymers of pyrrole, thiophene, aniline, and combinations thereof, said polymer composition being adapted to bind specifically to an analyte and to release the analyte, and said polymer composition is prepared by a process comprising:

• mixing an aqueous solution of acetonitrile and an electrolyte to make a mixture wherein the electrolyte is p-toluene sulfonic acid, naphthalene sulfonic acid, tetraacetyl ammonium toluene sulfonate, or a combination of p-toluene sulfonic acid and naphthalene sulfonic acid;
• increasing pH of the mixture through addition of base to the mixture;
• inserting an electrode into the mixture;
• adding one or more monomers to the mixture, wherein the one or more monomers is pyrrole, thiophene, analine, or a combination thereof;
• adding an antibody to the mixture, wherein the antibody is capable of binding to the analyte;
• applying a voltage to the electrode, wherein the voltage produces a direct current;
• and,
• altering the voltage.