Four-Electron Reduction of Dioxygen Catalyzed by Self-Doped Polyaniline-Co-Porphyrin Complex

The four-electron reduction of oxygen to water in a pseudo-neutral atmosphere(pH: 6.2) takes place on a glassy carbon electrode by electro-catalysis using the Co-porphyrin-polyaniline complex which shows a stable redox activity over a wide pH range due to the self-dopable carboxy substituents in the polymer chain.