| abstract |
It is an object of the present invention to provide a light emitting layer host compound having a high excitation triplet level and completely blocking triplet excitons of a phosphorescent emitter. The present invention relates to a compound containing an m-carbazolylphenyl group represented by the following formula (1).n n n ≪ Formula 1 >n n n n n n n n (Wherein A represents a nitrogen atom, an amino group bonded with a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted condensed polycyclic aromatic group, n represents an integer of 2 to 4, R 1 and R 2 may be the same or different and represent an arbitrary substituent, and m and o represent an integer of 0 to 4)n n n m-carbazolylphenyl group |