Patent ID: 8012609

Claim:
An organic electroluminescent device comprising: a pair of electrodes; and an organic layer between the pair of electrodes, which comprises a light-emitting layer and contains a compound represented by the following Formula (Ia) or Formula (Ic): wherein each of R 2a to R 7a independently represents a hydrogen atom or a substituent with the proviso that at least one of R 2a to R 7a represents a deuterium atom or a substituent containing a deuterium atom, n 1a represents an integer of 2 to 6, and L 1a represents an n 1a -valent linking group, (Ind) n -L Formula (Ic) wherein Ind represents a residue structure of the compound of the Formula (I), L represents a linking group bound to the 2- or 3-position of the indole ring of the compound of the formula (I), and n represents an integer of 2 or greater, wherein each of R 1 to R 7 independently represents a hydrogen atom or a substituent with the proviso that at least one of R 1 to R 7 represents a deuterium atom or a substituent containing a deuterium atom, wherein in the above Formula (Ia) and Formula (I), the ratio between deuterium atoms and hydrogen atoms, as represented by the number of deuterium atoms:the number of hydrogen atoms is from 100:0 to 1:99.