| abstract |
In the molecule, it has a substituent A having at least one dibenzofuran and a substituent B selected from a group having at least one dibenzofuran or carbazole, substituent A and substituent B are different groups, and also substituent A and The substituent B is hardly crystallized by the organic electroluminescent device containing an aromatic amine derivative characterized by bonding to the same or different nitrogen atom in the molecule, and the yield in manufacturing the organic electroluminescent device is improved, An organic electroluminescent device having a high efficiency and a long life and an aromatic amine derivative for realizing the same are provided. The aromatic amine derivative is contained in at least one layer, in particular a hole transport layer, of an organic thin film layer of an organic electroluminescent device in which an organic thin film layer composed of at least one light emitting layer or a plurality of layers including a light emitting layer is sandwiched between a cathode and an anode. |