Patent ID: 7402346

Claim:
An organic light-emitting device comprising an anode, a cathode, and an eluminescent region disposed between said anode and said cathode, said eluminescent comprising a light-emitting material of the formula wherein R 1 is independently selected from the group consisting of an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, an amino group, an alkyl amino group, and an aryl amino group; R2 is independently selected from the group consisting of hydrogen, and an alkyl group; R 3 is independently selected from the group consisting of hydrogen, an alkyl group, an alkoxy group, a halogen atom, and a cyano group; and, R4 is independently selected from the group consisting of hydrogen, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a halogen atom, and a cyano group.