CV parameters; in situ electrolytic ESR and UV-vis system; CVs at a fast scan rate; optimized geometries of the compounds; thermodynamic equilibrium scheme of PCET between PtsH and O2 •-; optimized geometries of the complexes along the IRC of the PCET between transresveratrol and HO2 • ; calculated energies and the values used for zero-point correction and thermal corrections to Gibbs Free Energy