This invention relates to a highly reliable material for an organic electroluminescent element exhibiting high luminance, high luminous efficiency, little deterioration in emission, and suitability for use and storage at high temperatures and to an organic electroluminescent element using said material. The material is a diaminodibenzodioxin derivative represented by general formula (1) ##STR00001## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3, and Ar.sub.4 are substituted or unsubstituted aryl groups and Ar.sub.1, Ar.sub.2, and the nitrogen atom bonded thereto or Ar.sub.3, Ar.sub.4, and the nitrogen atom bonded thereto may form a nitrogen-containing heterocyclic ring; and this diaminodibenzodioxin derivative may be incorporated in the light-emitting layer, the hole-transporting layer, or the hole-injecting layer of an organic electroluminescent element.