Enhancing NIR-to-visible upconversion in a rigidly coupled tetracene dimer: approaching statistical limits for triplet–triplet annihilation using intramolecular multiexciton states
Alexander T. Gilligan, Raythe Owens, Ethan G. Miller, Nicholas F. Pompetti, Niels H. Damrauer
Abstract
= 0.42 that matches or exceeds values found in champion annihilator systems such as DPA. At the same time, the poor relative efficiency of TIPS-Tc suggests involvement of non-productive bimolecular channels and excimeric states are suspected. Broadly these studies indicate that funneling of photogenerated electronic states into productive pathways, and avoiding parasitic ones, remains central to the development of champion upconversion systems.
Topics & Concepts
TetracenePhoton upconversionIntramolecular forceAnnihilationDimerMaterials sciencePhysicsPhotochemistryChemistryAnthraceneOptoelectronicsQuantum mechanicsDopingNuclear magnetic resonanceLuminescence and Fluorescent MaterialsPerovskite Materials and ApplicationsLuminescence Properties of Advanced Materials