Enabling red thermally activated delayed fluorescence by increasing the push–pull strength in naphthalimide-phenothiazine derivatives
Chiara Montanari, Tommaso Bianconi, Manju Sheokand, Titouan Teunens, Giulia Cavalletti, Jérôme Cornil, Rajneesh Misra, Benedetta Carlotti
Abstract
The stronger push–pull character of the phenothiazine relative to the phenothiazine-dioxide derivatives is crucial to achieve negligible S 1 –T 1 energy gap and enable reverse intersystem crossing followed by red Thermally Activated Delayed Fluorescence.
Topics & Concepts
PhenothiazineIntersystem crossingFluorescencePhotochemistryMaterials scienceChemistryOpticsExcited statePhysicsPharmacologySinglet stateNuclear physicsMedicineOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent MaterialsPerovskite Materials and Applications