Bulky ligands protect molecular ruby from oxygen quenching
Laura Stein, Cui Wang, Christoph Förster, Ute Resch‐Genger, Katja Heinze
Abstract
sensitivity of the photoluminescence was derived from absolutely measured photoluminescence quantum yields and excited state lifetimes under inert and aerobic conditions and by Stern-Volmer analyses of these data. Optimal sterically shielded chromium(III) complexes revealed photoluminescence quantum yields of up to 5.1% and excited state lifetimes of 518 µs in air-saturated acetonitrile, underlining the large potential of this ligand design approach to broaden the applicability of highly emissive chromium(III) complexes.
Topics & Concepts
PhotoluminescencePhosphorescenceQuantum yieldExcited statePhotochemistryLuminescenceChemistryQuenching (fluorescence)ChromiumMaterials scienceFluorescenceAtomic physicsOptoelectronicsOrganic chemistryPhysicsQuantum mechanicsLuminescence and Fluorescent MaterialsRadical Photochemical ReactionsLanthanide and Transition Metal Complexes