their Eu3+ complexes, which is outstanding among conjugated Eu3+ complexes. Density function theory (DFT) simulations and electrochemical analysis further verified the contributions of DPEPOArn to the carrier injecting/transporting ability of the complexes. In this sense, these functionalized PO ligands served as hosts in optoelectronic processes, which rendered the self‐host feature of their Eu3+ complexes
A series of aryl phosphine oxide hosts named DPExPOPhCzn were constructed to rationally investigate the significant correlation between T1 excited state locations and EL performance of their PHOLEDs.