David’s research interests include fundamental radiation chemistry of organic liquids, including the development of new radical scavengers. He also studies photochemistry and radiation chemistry of transition metal complexes and other systems in conventional solvents, supercritical fluids, and ionic liquids, to gain a fundamental understanding of processes in solar fuels production and catalysis, e.g., CO₂ reduction, H₂ production, and small molecule activation. He also works on the development of advanced, nanosecond time-resolved infrared (TRIR) detection methods for pulse radiolysis and laser flash photolysis, and their use in mechanistic investigations of catalytic and other processes, in addition to transient spectroscopic techniques (UV-visible and time-resolved infrared (TRIR)) on fast and ultrafast timescales.