Patent ID: 7135243

Claim:
An organic EL device, comprising an anode and a cathode, and at least one organic luminescent layer doped with a non-aggregate luminescent compound of the formula: positioned between said anode and said cathode, and wherein: R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are individual substituents, each substituent is an individual group selected from the group consisting of hydrogen, halogens, and groups that contain 1 to 48 carbon atoms, and at least one group is not hydrogen, further, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 is not an arylamino group.