Billion-Year-Old Oxygen Cathode that Actually Works: Respiratory Oxygen Reduction and Its Biomimetic Analogs -- Fundamental Aspects on the Catalytic Activity of Metallomacrocyclics for the Electrochemical Reduction of O2 -- Oxygen Reduction in PEM Fuel Cell Conditions: Heat-Treated Non-Precious Metal-N4 Macrocycles and Beyond -- Biomimetic NOx Reductions by Heme Models and Proteins -- Electroreduction of CO2 Catalyzed by Metallomacrocyclics -- Supramolecular Porphyrins as Electrocatalysts -- Electrodes Modified with Monomeric M-N4 Catalysts for the Detection of Environmentally Important Molecules -- Electropolymerized Metalloporphyrin Metallophthalocyanine and Metal Schiff Base Complex Films: Applications to Biomimetic Electrocatalysis and Bioelectroanalysis -- Electron Transfer Processes of ?-Pyrrole Brominated Porphyrins: Structural vs. Electronic Effects -- Photoelectrochemical Reactions at Phthalocyanine Electrodes -- Organisation and Photoelectrochemical Reactivity of Water-Soluble Metalloporphyrins at the Liquid/Liquid Interface -- Theoretical Insights on the Chemical Reactivity of Metalloporphyrins Using Density Functional Theory -- Organized Multiporphyrinic Assemblies for Photoconduction and Electroconduction -- Vibrational Spectra and Surface-Enhanced Vibrational Spectra of Azamacrocycles.