Light-emitting device material and light-emitting device

A light-emitting device material comprising a compound represented by the following general formula (1):

• wherein R1 to R21 may be the same or different and are each selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a halogen, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, a silyl group and —P(═O)R27R28, wherein R27 and R28 are each an aryl group or a heteroaryl group, with the proviso that two carbazole skeletons are coupled at one of R6 to R13 and one of R14 to R21;
• and R22 to R26 satisfy any of the following requirements (A) and (B):
• (A) at least one of R23 and R25 is NAr1Ar2, others may be the same or different and are each selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a halogen, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, a silyl group and —P(═O)R27R28, and Ar1 and Ar2 may be the same or different and each represent a substituted or unsubstituted phenyl group;
• and
• (B) R24 is NAr1Ar2, others may be the same or different and are each selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a halogen, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, a silyl group and —P(═O)R27R28, and Ar1 and Ar2 may be the same or different, and each represent an unsubstituted phenyl group, a phenyl group substituted with an alkyl group, a phenyl group substituted with a halogen, or a phenyl group substituted with a phenyl group, with the proviso that Ar1 and Ar2 do not represent a phenyl group substituted with a phenyl group at the same time.