Is a small singlet–triplet energy gap a guarantee of TADF performance in MR-TADF compounds? Impact of the triplet manifold energy splitting
Rasa Keruckienė, Aliaksei A. Vaitusionak, Maksim I. Hulnik, Ivan A. Berezianko, Dalius Gudeika, Simas Macionis, Malek Mahmoudi, Dmytro Volyniuk, Danillo Valverde, Yoann Olivier, Kai Lin Woon, Sergei V. Kostjuk, Sebastian Reineke, Juozas V. Gražulevičius, Gjergji Sini
Abstract
A design strategy for efficient MR-TADF emitters needs (i) avoiding aggregation by inducing steric hindrance at peripheral strategic positions, and (ii) combining lateral groups of higher donor character as compared to the central core.
Topics & Concepts
Singlet stateSteric effectsMaterials sciencePhotochemistryCore (optical fiber)Singlet fissionAtomic physicsChemistryPhysicsStereochemistryExcited stateComposite materialOrganic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsConducting polymers and applications