Chemical Modification of Carbon Electrodes. X. ESCA and AC Voltammetry of Glassy Carbon-Bound Tetra (Aminophenyl) Porphyrins.

摘要

ESCA data show that tetra (aminophenyl) porphyrin is bound to glassy carbon electrode surfaces by an average of two amide bonds. The bound porphyrin,its Co-metallated analog,and a nitroaromatic bound to the porphyrin via the dangling amine sites,exhibit electrochemical surface waves detected by cyclic,differential pulse and AC voltammetry. Axial coordination of immobilized porphyrin is demonstrated by sensitivity of the electrochemistry to added bases.