| abstract |
An organic electroluminescence device using a compound having a biaryl group having a bond axis capable of imparting internal rotational isomerism is provided. An electroluminescent material represented by the following general formula (B1). [Chemical 1] [Wherein, Ar 41 and Ar 42 each independently represent an aryl group or an aromatic heterocyclic group, L 13 represents āOā, L 11 represents āNā, and L 12 represents a 5-membered aromatic group. Represents a group of atoms necessary to form a heterocyclic ring. However, Ar 41 and Ar 42 are a biaryl group having a bond axis capable of imparting internal rotational isomerism or a group having a portion thereof. ] [Selection] Figure 1 |