| 摘要 |
PROBLEM TO BE SOLVED: To provide a new substance exhibiting phosphorescence, or provide a new substance with high luminous efficacy.SOLUTION: An organometallic complex in which a 4-arylpyrimidine derivative is a ligand and iridium is a central metal is provided. Specifically, an organometallic complex having a structure represented by a general formula (G1) is provided. In the general formula (G1), Rrepresents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, Rrepresents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted phenyl group, Rrepresents hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and Arrepresents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms. |
