Isoacridone dyes with parallel reactivity from both singlet and triplet excited states for biphotonic catalysis and upconversion
Björn Pfund, Valeriia Hutskalova, Christof Sparr, Oliver S. Wenger
Abstract
sensitization-initiated electron transfer, substituting the commonly used iridium or ruthenium based photocatalysts. Further, in combination with a pyrene-based annihilator, sensitized triplet-triplet annihilation upconversion was achieved in an all-organic system, where the upconversion quantum yield correlated with the intersystem crossing quantum yield of the photosensitizer. This work seems relevant in the greater contexts of developing new applications that utilize biphotonic photophysical and photochemical behavior within metal-free systems.
Topics & Concepts
Photon upconversionPhotochemistryReactivity (psychology)Singlet stateExcited stateCatalysisChemistrySinglet fissionOrganic chemistryPhysicsMedicineAlternative medicinePathologyIonNuclear physicsPhotochemistry and Electron Transfer StudiesRadical Photochemical ReactionsLuminescence and Fluorescent Materials