Organometallic Iridium Complex, Light-Emitting Element, Light-Emitting Device, Electronic Device, Lighting Device, and Synthesis Method of Organometallic Iridium Complex

摘要

A high-purity organometallic iridium complex is provided. The organometallic iridium complex includes iridium and a plurality of ligands cyclometallated to the iridium. Each of the plurality of ligands includes a heteroaromatic ring having a coordinatable nitrogen atom. In LC analysis of the organometallic iridium complex, an impurity which has a monochlorinated ligand among the plurality of ligands is 0.1% or less by quantitating using peak area count with a PDA detector.

主权项

1. An organometallic iridium complex comprising:
iridium; a first ligand cyclometallated to the iridium; and a second ligand cyclometallated to the iridium, wherein the first ligand comprises a first heteroaromatic ring comprising a first nitrogen atom, wherein the second ligand comprises a second heteroaromatic ring comprising a second nitrogen atom, wherein each of the first nitrogen atom and the second nitrogen atom is bonded to the iridium, wherein an impurity is detected in liquid chromatography of the organometallic iridium complex, wherein the impurity comprises a monochlorinated ligand, and wherein a ratio of the impurity is 0.1% or less by quantitating using peak area count in liquid chromatography.