As a novel substance having a novel skeleton, provided is a novel phosphorescent organometallic iridium complex that can emit phosphorescence in a blue green to red wavelength region and has high emission efficiency. The phosphorescent organometallic iridium complex has a ligand having a pyridyl pyrimidine skeleton, i.e., the phosphorescent organometallic iridium complex has a ligand having a structure represented by the following general formula (G0).
Note that in the formula, R
1
and R
4
to R
6
separately represent hydrogen or an alkyl group having 1 to 6 carbon atoms; and R
2
and R
3
separately represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a phenyl group that may have a substituent, and a pyridyl group that may have a substituent.
提供了一种具有新颖骨架的新型物质,即一种新型
磷光有机
金属
铱配合物,它可以在蓝绿色到红色波长区域发出
磷光,并具有高发射效率。该
磷光有机
金属
铱配合物具有具有
吡啶基
嘧啶骨架的
配体,即该
磷光有机
金属
铱配合物具有以下通式(G0)所表示的结构的
配体。请注意,在该式中,R1和R4到R6分别表示氢或具有1至6个碳原子的烷基基团;而R2和R3分别表示氢、具有1至6个碳原子的烷基基团、可能具有取代基的苯基团和可能具有取代基的
吡啶基团中的任何一种。