Patent ID: 7517592

Claim:
A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed between said electrodes, said light-emitting layer or at least one of a plurality of organic layers comprising said light-emitting layer comprising at least one compound represented by the following general formula (5): wherein each of Ar 51 , Ar 52 , Ar 53 and Ar 54 represents an aryl group; R 51 represents a hydrogen atom or a substituent; R 52 represents a substituent; and n 51 represents an integer of 0 to 9, and wherein in said general formula (5), each of Ar 51 , Ar 52 , Ar 53 and Ar 54 is selected from the group consisting of a phenyl group, a naphthyl group, an anthryl group and a phenanthryl group, and Ar 51 , Ar 52 , Ar 53 and Ar 54 and the 1-pyrenyl group are not bonded to each other to form a ring.