with, for example, methyl and carboxylic groups (5), glu-Sterically stabilized polypyrrole latex particles attached to Au cose oxidase (6, 7), and nitrotoluenes (8). In chromatosubstrates were observed to adsorb imidazole and histidine from graphic applications, polypyrrole doped with dodecyl sulfate aqueous solutions by ellipsometry. In initial studies the imidazole counterions coated onto reticulated vitreous carbon particles ring adsorption was mainly irreversible, but after electrochemical has been observed to have a high retention for acidic comreduction-oxidation cycling of the particles in HCl solution only pounds through ion-exchange interactions. The performance reversible adsorption of the heterocyclic compounds was observed.
of packed columns of the particles could be altered by
Adsorption experiments on control surfaces containing the differapplying an electrical potential ( 9). There has also been ent components of the latex particles identified iron species incorrecent interest in using polypyrrole latex particles as solidporated during synthesis as the probable irreversible adsorption sites. The reversible adsorption sites were possibly due to the acidic phase supports for immunoassays (10). Surface modificaproperties of the polypyrrole core in the particles. α§ 1998 Academic tion of these latex particles with reactive groups yielded Press