Torsion-Induced Nonradiative Relaxation of the Singlet Excited State of <i>meso</i>-Thienyl Bodipy and Charge Separation, Charge Recombination-Induced Intersystem Crossing in Its Compact Electron Donor/Acceptor Dyads
Yu Dong, Maria Letizia Taddei, Sandra Doria, Laura Bussotti, Jianzhang Zhao, Gloria Mazzone, Mariangela Di Donato
Abstract
= 1.9-45%), which supports the SOCT-ISC mechanism, and the triplet-state lifetime is up to 247.3 μs. Using the electron donor-acceptor dyad showing SOCT-ISC as a triplet photosensitizer, efficient triplet-triplet annihilation (TTA) upconversion was observed with a quantum yield of up to 6.0%.
Topics & Concepts
Intersystem crossingBODIPYPhotochemistryQuantum yieldChemistryConical intersectionUltrafast laser spectroscopyExcited stateElectron donorSinglet stateAcceptorTriplet stateMaterials scienceFluorescenceAtomic physicsSpectroscopyPhysicsBiochemistryCatalysisCondensed matter physicsQuantum mechanicsLuminescence and Fluorescent MaterialsPerovskite Materials and ApplicationsPhotochemistry and Electron Transfer Studies