An object of the present invention is to provide a host compound in an emission layer, which has a high excited triplet level and completely confines triplet excitons of an phosphorescence-emitting substance. The invention relates to a compound containing an m-carbazolylphenyl group, which is represented by the following general formula (1):
wherein A represents a nitrogen atom, an amino group to which a substituted or unsubstituted aromatic hydrocarbon group is bonded, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; n represents an integer of 2 to 4; R1 and R2 may be the same or different and represent each an arbitrary substituent; and m and o represent each an integer of 0 to 4.
本发明的目的是提供一种在发射层中具有高激发三重态能级并完全限制
磷光发射物质三重激子的主体化合物。本发明涉及一种含有m-
咔唑基苯基基团的化合物,其由下列通式(1)表示:其中,A表示氮原子,
氨基团,其上结合有取代或未取代
芳香烃基团,取代或未取代的芳香族杂环基团,或取代或未取代的紧缩多环芳香族基团;n表示2至4的整数;R1和R2可以相同也可以不同,每个代表任意的取代基;m和o各自表示0至4的整数。