The present invention provides a novel metal complex compound represented by the following general formula (1), and an organic electroluminescence element which has a high efficiency of light emission and a long lifetime, wherein one of organic thin film layers including at least a light emitting layer between an anode and a cathode, a least one of the organic thin film layers contains the metal complex compounds.
(L1)mM(L2)n (1)
wherein M represents Ir, Pt and Rh; L1 and L2 represents mutually different bidentate ligands; (L1)mM as a partial structure is represented by general formula (2) and M(L2)n as a partial structure is represented by general formula (3): and m and n are each an integer of 1 or 2, provided that m+n is a integer of 2 or 3.
wherein ring A1 represents an aromatic hetrocyclic ring group; and ring B1 represents an aryl group, provided that the ring A1 and the ring B1 are covalently linked to each other via Z which represents a single bond or the like.
wherein R1, R2, R2' and R3 each independently represent an alkyl group or the like; R1 and Rz, R1 and R2', Rz and R2', Rz and R3, and R2' and R3 may combine with each other to form a cyclic structure; and Y represents a group represented by O or S.
本发明提供了一种由以下通式(1)表示的新型
金属络合物,以及一种发光效率高、寿命长的有机电致发光元件,其中有机薄膜层包括阳极和阴极之间的至少一个发光层,有机薄膜层中的至少一个含有
金属络合物。
(L1)mM(
L2)n (1)
其中 M 代表 Ir、Pt 和 Rh;L1 和
L2 代表互不相同的双齿
配体;(L1)mM 作为部分结构用通式 (2) 表示,M(
L2)n 作为部分结构用通式 (3) 表示:且 m 和 n 各为 1 或 2 的整数,条件是 m+n 为 2 或 3 的整数。
其中,环 A1 代表芳香族七环基团;环 B1 代表芳基,条件是环 A1 和环 B1 通过代表单键或类似键的 Z 共价连接。
其中 R1、R2、R2'和 R3 各自独立地代表烷基或类似物;R1 和 Rz、R1 和 R2'、Rz 和 R2'、Rz 和 R3 以及 R2'和 R3 可相互结合形成环状结构;Y 代表由 O 或 S 所代表的基团。