| abstract |
(57) [Abstract] [Purpose] To realize an organic EL device having high reliability and high luminous efficiency. [Structure] A compound having a skeleton shown in Chemical formula 1 is contained in a light emitting layer. [Chemical 1] (In Chemical formula 1 , R 1 to R 3 are a hydrogen atom, a cyano group, Carboxyl group, alkyl group, aryl group, arylcarbonyl group, alkylcarbonyl group, aryloxy group, alkyloxy group, alkyloxycarbonyl group, An aryloxycarbonyl group or a heterocyclic residue, Those adjacent to each other may combine with each other to form a ring. R 4 to R 7 are lower alkyl groups. Further, X and Y are oxygen atom, sulfur atom or NT. However, T is a hydrogen atom, an alkyl group, or an aryl group. ) |