CATALYTIC ACTIVITY OF ELECTRODE MATERIALS BASED ON POLYPYRROLE, MULTI-WALL CARBON NANOTUBES AND COBALT PHTHALOCYANINE FOR THE ELECTROOXIDATION OF GLUTATHIONE AND L-CYSTEINE

electrodes prepared from overoxidized pyrrole, multi-walled carbon nanotubes (mwcnt) and cobalt phthalocyanine (copc) exhibit a clear catalytic activity for the electrooxidation of l-cysteine and reduced gluthatione. the electrodes are more stable than the ones modified by simple adsorption of copc and/or mw-cnt. therefore, these materials offer a good alternative for the development of electrocatalytic applications and thiols detection in biological interest.