Photochemistry I: Xanthene Dyes and Energy Transfer Mechanisms

This lecture covers the properties and structures of xanthene dyes, including fluoresceine and tetrachloro fluoresceine, as well as their applications in photochemistry. It also discusses spin-orbit coupling, the energy-gap law, and the quenching of emission through the Stern-Volmer relation. Furthermore, it explores intermolecular electronic energy transfer mechanisms, such as Förster resonance energy transfer (FRET) and Dexter electron exchange, and their impact on fluorescence quenching.