Oxidant-dependent antioxidant activity of polydopamine films: The chemistry-morphology interplay

Polydopamine (PDA) films allow to functionalize almost all materials with a conformal and chemically active coating. These coatings can react reducible metallic cations kinds of molecules carrying nucleophilic groups. Recently, our team extended PDA chemistry vast repertoire oxidants acidic conditions. However, the influence changes in method deposition on properties obtained coatings, particular antioxidant properties, have not been sufficiently explored. It is anticipated that should depend film preparation method. A combination experimental techniques, atomic force microscopy, cyclic voltammetry X ray photoelectron spectroscopy are used relate their structural features chemical composition. demonstrated only dependent type employed oxidant – which be expected affect variable density oxidizable groups surface - but also morphology roughness.