Quasi-heavy atom effect for room-temperature phosphorescence
Zuoan Liu, Bingli Jiang, Xiaofeng Zhang, Linlin Du, Anna Qin, Tingting Zhu, Guanxing Lao, Linmin Zou, Yongyang Gong, Wang Zhang Yuan
Abstract
= 455 nm, quantum efficiency: 8.72%, lifetime: 4.20 s) only within a PVA matrix. This suggests an unrecognized intrinsic PVA property promoting efficient SOC and ISC. We propose a novel "quasi-heavy atom effect," where PVA's unique characteristics facilitate SOC similar to heavy atoms, but without their toxicity or cost. This understanding is critical for designing novel RTP materials.
Topics & Concepts
PhosphorescenceIntersystem crossingBiphenylFluoreneMaterials sciencePhotochemistryMoleculePhosphorescent organic light-emitting diodeLuminescenceDopingPolymerDopantAtom (system on chip)PolyfluoreneNanotechnologyCoupling (piping)Chemical physicsSmall moleculeAggregation-induced emissionOptoelectronicsOxygen atomOLEDMechanism (biology)ChemistryPersistent luminescenceOrganic moleculesLuminescence and Fluorescent MaterialsLuminescence Properties of Advanced MaterialsLanthanide and Transition Metal Complexes