A luminescence device having a layer containing a metal coordination compound which has a partial structure. ML
m
of formula (2) below and is preferably entirely represented by formula (3) below:
ML
m
L′
n
(3)
wherein M denotes a metal atom of Ir, Pt, Rh or Pd; represent mutually different bidentate ligands; m is 1 or 2 or 3; n is 0 or 1 or 2 with the proviso that m+n=2 or 3; the partial structure ML
m
is represented by formula (2) below (wherein B is an isoquinolyl group bonded to the metal M with its N and including a position-1 carbon atom bonded to a cyclic group A which includes the C bonded to the metal M), and the partial structure ML′
n
is represented by formula (4), (5) or (6) shown below. There is provided a luminescence device capable of high-efficiency luminescence and long-term high luminance and adapted to red luminescence.
一种发光装置,其包含一层含有
金属配位化合物的层,该
金属配位化合物具有部分结构,如下公式(2)的 MLm,最好完全由下面的公式(3)表示:MLmL′n(3),其中M表示Ir、Pt、Rh或Pd
金属原子;表示互不相同的双齿
配体;m为1、2或3;n为0、1或2,但m+n=2或3;部分结构MLm由下式(2)表示(其中B是与
金属M配位的
异喹啉基,包括与环状基团A上的碳原子结合的位置1,该环状基团包括与
金属M结合的C),部分结构ML′n由下列公式(4)、(5)或(6)表示。提供了一种能够高效发光和长期高亮度并适用于红色发光的发光装置。