Catalytic Oxygen Atom Transfer Through Photochemical and Electrochemical Activation of O2 or H2O

Chemical transformations involving oxygen atom transfer (OAT) to organic substrates attract signifi cant interest across industrial, pharmaceutical, and funda mentalchemicalresearch, including areas such asbioinor ganic chemistry, catalysis, and synthetic methodology. Recent advances in electrochemical and photochemical catalysis have opened up newpathwaysforenablingOAT processes, particularly through the reductive activation of dioxygen or oxidative activation of water. This minire view explores emerging approaches in the field, including electrocatalytic methods leveraging bioinspired transition metal complexes, photocatalytic platforms integrating catalysts with photosensitizers, photoactive materials, or organic photocatalysts, and hybrid methodologies com bining electrochemical and photochemical activation. We outline future directions for innovation, ranging from the design of functional molecular architectures and device engineering to the development of scalable technologies for industrial applications.