abstract |
A compound represented by formula (1) is useful as a material for organic EL devices which realizes an organic EL device exhibiting high emission efficiency even when driving at a low voltage and has a long lifetime: n nwherein R 1 to R 4 , L 0 to L 2 , Ar 1 to Ar 2 , m1 to m3, and k4 are as defined in the description. |