| abstract |
The aromatic amine derivative represented by the following formula (1) is useful as a constituent component of an organic EL device, and realizes an organic EL device with high efficiency and long life even when driven at a low voltage. [Formula 1] (In the formula, HAr 1 is a dibenzofuryl group or a dibenzothienyl group, Ar 2 is an alkyl group, an aryl group, or a heterocyclic group, and L 1 -L 3 are each independently a single bond or a phenylene group.) |