Luminescent Tungsten(VI) Complexes: Photophysics and Applicability to Organic Light‐Emitting Diodes and Photocatalysis

• DOI: 10.1002/ange.201608240
• Publication Date: 2016-12-05T10:39:43Z
• Authors: Kwan‐Ting Yeung; Wai‐Pong To; Chenyue Sun; Gang Cheng; Chensheng Ma; Glenna So Ming Tong; Chen Yang; Chi‐Ming Che
• Keywords: Quantum Efficiency

Abstract The synthesis, excited‐state dynamics, and applications of two series air‐stable luminescent tungsten(VI) complexes are described. These show phosphorescence in the solid state solutions with emission quantum yields up to 22 % thin film (5 mCP) at room temperature. Complex 2 c , containing a 5,7‐diphenyl‐8‐hydroxyquinolinate ligand, displays prompt fluorescence (blue–green) (red) comparable intensity, which could be used for ratiometric sensing. Solution‐processed organic light‐emitting diodes (OLEDs) based on 1 d showed stable yellow an external efficiency (EQE) luminance 4.79 1400 cd m −2 respectively. were also applied light‐induced aerobic oxidation reactions.