Hybrid Oligomeric Metal Complex: A Dual Electron Transport Medium for Organic Light‐Emitting Diodes

A new hybrid monomer ligand, termed B8HQOXD 5 , is successfully synthesized. This ligand is composed of 5,5′‐((((1,3,4‐oxadiazole‐2,5‐diyl)bis(1,4‐phenylene))bis(azanediyl))bis(methylene))bis(quinolin‐8‐ol). The corresponding oligomer metal complex, B8HQOXD–Zn(II) 6 , is also designed and synthesized. Through meticulous spectroscopic analyses, we have explored the luminescent behavior of our oligomer 6 as a function of temperature and time. This exploration has revealed three distinct luminance emissions, each mirroring a distinct structural aspect of oligomer 6 . These emissions have been meticulously correlated with various origin groups, offering a comprehensive understanding of the oligomeric structure. When compound 6 is utilized at low concentrations, it demonstrates promising electron‐transport properties in solution‐processed organic light‐emitting diodes with a specific device structure: glass/indium tin oxide/PEDOT:PSS/PVK + 10% [ 6 ] + 4% Ir(ppy) 3 /LiF/Al.