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|1. (WO2018066583) IRIDIUM COMPLEX COMPOUND, COMPOSITION CONTAINING SAID COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE|
|Applicants:||MITSUBISHI CHEMICAL CORPORATION
|Title:||IRIDIUM COMPLEX COMPOUND, COMPOSITION CONTAINING SAID COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE AND LIGHTING DEVICE|
The purpose of the present invention is to provide: an iridium complex compound which has a long maximum emission wavelength and a high luminescence quantum yield, and which emits red phosphorescent light; a composition which contains this compound; an organic electroluminescent element which has a long maximum emission wavelength and a high luminous efficiency; and a display device and a lighting device, each of which uses this organic electroluminescent element. The present invention relates to an iridium complex compound which is represented by formula (1); and this complex compound has at least a naphthyridine skeleton as a ligand that is coordinated to an iridium atom.