Physical and Theoretical Chemistry

Photochemistry and Light-Driven Processes

Further contributions are invited on singlet and triplet excited-state dynamics, internal conversion, intersystem crossing rates, and the role of vibronic coupling in non-radiative decay. Sessions may address photocatalytic hydrogen generation, water splitting, organic photoredox transformations, and the design of photosensitizers with long-lived charge-separated states. Discussion will extend to upconversion, downconversion, photon recycling, aggregation-induced emission, and thermally activated delayed fluorescence in emissive materials. Time-resolved transient absorption, time-correlated single-photon counting, and femtosecond stimulated Raman measurements will be considered in connection with mapping reaction coordinates after excitation. The control of photochemical reaction selectivity through wavelength, solvent, and supramolecular preorganization will be emphasized, along with photostability and phototoxicity considerations. Applications may include organic light-emitting devices, photodynamic therapy, photochromic switches, optical data storage, and solar-driven synthesis of value-added chemicals.