An electro-luminescent element comprising an organic compound layer is disclosed. The organic compound layer contains a compound represented by Formula I or Formula V:
1
wherein R
1
and R
2
are each a substituent, and Ar is an aromatic hydrocarbon ring or an aromatic heterocyclic ring each of them may have a substituent,
2
wherein R
11
through R
16
and X
1
through X
9
are each a hydrogen atom or a substituent, they may be the same or different; and the sum of the steric parameters Es
R1
through Es
R16
of R
11
through R
16
satisfies the following expression:
本发明公开了一种包含有机化合物层的电致发光元件。所述有机化合物层包含由式I或式V表示的化合物:1其中R1和R2均为取代基,Ar为
芳香烃环或芳香杂环环,每个环均可具有取代基,2其中R11至R16和X1至X9均为氢原子或取代基,它们可以相同也可以不同;R11至R16的立体参数EsR1至EsR16的总和满足以下表达式: