Accessing the triplet state of perylenediimide by radical-enhanced intersystem crossing
Maximilian Mayländer, Oliver Nolden, Michael Franz, Su Chen, Laura Bancroft, Yunfan Qiu, Michael R. Wasielewski, Peter Gilch, Sabine Richert
Abstract
state deactivation rate constants and triplet yields are observed for compounds bearing PDI moieties with different core substitution patterns. We show that these differences can be rationalized by considering the varying importance of competitive excited state decay processes, such as electron and excitation energy transfer. The comparison of the results obtained for different PDI-TEMPO derivatives leads us to propose design guidelines for optimizing the efficiency of triplet sensitization in molecular assemblies by EISC.
Topics & Concepts
Intersystem crossingPhotochemistryTriplet stateChemistryPhysicsOrganic chemistrySinglet stateExcited stateMoleculeAtomic physicsLuminescence and Fluorescent MaterialsOrganic Electronics and PhotovoltaicsElectron Spin Resonance Studies