申请人:Sumitomo Chemical Company, Ltd.
公开号:EP3235891A1
公开(公告)日:2017-10-25
Provided is a composition which is useful for producing a light emitting device the driving voltage of which is low.
A composition comprising a phosphorescent compound represented by the formula (1) and a phosphorescent compound represented by the formula (2):
wherein M1 represents an iridium atom or the like, n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, E1 and E2 represent a carbon atom or the like, the ring R1 represents a 5-membered aromatic heterocyclic ring, the ring R2 represents an aromatic hydrocarbon ring or the like, A1 -G1 -A2 represents an anionic bidentate ligand, and at least one ring selected from the group consisting of the ring R1 and the ring R2 has a specific aryl group:
wherein M2 represents an iridium atom or the like, n3 represents an integer of 1 or more, n4 represents an integer of 0 or more, the ring L1 represents a 6-membered aromatic heterocyclic ring, the ring L2 represents an aromatic hydrocarbon ring or the like, A3 -G2 -A4 represents an anionic bidentate ligand, and at least one ring selected from the group consisting of the ring L1 and the ring L2 has a specific aryl group.
本发明提供了一种可用于生产驱动电压较低的发光器件的组合物。
该组合物由式(1)代表的磷光化合物和式(2)代表的磷光化合物组成:
其中 M1 代表铱原子或类似物,n1 代表 1 或更大的整数,n2 代表 0 或更大的整数,E1 和 E2 代表碳原子或类似物,环 R1 代表 5 元芳香杂环,环 R2 代表芳香烃环或类似物,A1 -G1 -A2 代表阴离子双齿配体,并且从环 R1 和环 R2 所组成的组中选出的至少一个环具有特定的芳基:
其中 M2 代表铱原子或类似物,n3 代表 1 或更大的整数,n4 代表 0 或更大的整数,环 L1 代表 6 元芳香杂环,环 L2 代表芳香烃环或类似物,A3 -G2 -A4 代表阴离子双叉配体,以及从环 L1 和环 L2 所组成的组中选出的至少一个环具有特定的芳基。