| abstract |
A compound which is for use in obtaining an organic EL element having a long luminescent life and excellent heat resistance. It is a host material for organic electroluminescent elements which comprises a carbazole derivative represented by the following general formula [I]. In the general formula [I], one of R1 and R2 is a group represented by the following structural formula [II], and the other is a group represented by the structural formula [II], hydrogen, or aryl having 6 to 50 nucleus carbon atoms; and Ar is (un)substituted aryl having 6 to 60 nucleus carbon atoms, provided that Ar is neither phenyl, 4-biphenyl, 4-terphenyl, nor 4-quaterphenyl and that when R1 is hydrogen and R2 is a group represented by the structural formula [II], then Ar is not 3,5-diphenylphenyl. |