A multifunctional phosphine oxide–diphenylamine hybrid compound as a high performance deep-blue fluorescent emitter and green phosphorescent host†
Abstract
A novel phosphine oxide–diphenylamine hybrid compound POA was designed and synthesized with the aim of developing new multifunctional blue fluorophores. POA is the first kind of compound that can be used as a high-efficiency deep-blue emitter (5.4% EQE) and a host to fabricate high-performance green phosphorescent OLEDs (18.1% EQE).