The present invention relates to novel organic electroluminescent compounds, and organic electroluminescent devices comprising the same as electroluminescent material. Specifically, the organic electroluminescent compounds according to the invention are characterized in that they are represented by Chemical Formula (1):
wherein, L1 is a substituent selected from the following structures;
A and B independently represent a chemical bond, or a substituent selected from the following structures;
and m and n independently represent an integer from 0 to 4; provided that, if
represents
both X1 and X2 represent NR33, and both Y1 and Y2 represent a chemical bond, then R33 does not represent hydrogen or (C1-C5)alkyl.
The organic electroluminescent compounds according to the invention exhibit high luminous efficiency in blue color and excellent life property of material, so that an OLED having very good operation life can be prepared therefrom.
本发明涉及新型有机电致发光化合物,以及将其作为电致
发光材料的有机电致发光器件。具体地说,根据本发明的有机电致发光化合物的特征在于它们由
化学式(1)表示:
其中,L1 是选自以下结构的取代基;
A 和 B 分别代表一个
化学键,或一个选自以下结构的取代基;
m 和 n 独立地代表 0 至 4 的整数;条件是,如果
代表
X1和X2均代表NR33,且Y1和Y2均代表
化学键,则R33不代表氢或(C1-C5)烷基。
根据本发明的有机电致发光化合物具有较高的蓝色发光效率和优异的材料寿命特性,因此可以制备出具有很好工作寿命的 OLED。