Patent ID: 7604874

Claim:
An organic electroluminescent (“EL”) device comprising of an anode; a cathode; and at least one layer located between the anode and the cathode, wherein the layer comprises a light-emitting layer having a light-emitting the compound of the Formula I generating visible light of colors ranging from green to red: wherein at least one of R1 through R4 is represented by Formula II: wherein n is an integer from 1 to 10, and wherein R5 and each of R1-R4 that is not Formula II are non double-spiral substituent groups selected from the group consisting of: hydrogen; halo; hydroxyl; mercapto; cyano; nitro; carbonyl; carboxyl; formyl; substituted or unsubstituted C1-C20 alkyl; substituted or unsubstituted C2-C10 alkenyl; substituted or unsubstituted C2-C7 alkynyl; substituted or unsubstituted aryl; substituted or unsubstituted heteroaryl; substituted or unsubstituted C3-C7 cycloalkyl, in which a carbon atom in the ring can optionally be replaced by an oxygen, nitrogen or sulfur atom; substituted or unsubstituted C4-C7 cycloalkenyl, in which a carbon atom in the ring can be optionally replaced by an oxygen, nitrogen or sulfur atom; substituted or unsubstituted C1-C20 alkoxy; substituted or unsubstituted C2-C10 alkenyloxy; substituted or unsubstituted C2-C7 alkynyloxy; substituted or unsubstituted aryloxy; substituted or unsubstituted C1-C20 alkylamine; substituted or unsubstituted C2-C10 alkenylamine; substituted or unsubstituted C2-C7 alkynylamine; substituted or unsubstituted arylamine; substituted or unsubstituted alkylarylamine; substituted or unsubstituted C1-C20 alkylsilyl; substituted or unsubstituted C2-C10 alkenylsilyl; substituted or unsubstituted C2-C7 alkynylsilyl; substituted or unsubstituted arylsilyl; substituted or unsubstituted alkylarylsilyl; substituted or unsubstituted C1-C20 alkylboranyl; substituted or unsubstituted C2-C10 alkenylboranyl; substituted or unsubstituted C2-C7 alkynylboranyl; substituted or unsubstituted arylboranyl; substituted or unsubstituted alkylarylboranyl; substituted or unsubstituted C1-C20 alkylthio; substituted or unsubstituted C2-C10 alkenylthio; substituted or unsubstituted C2-C7 alkynylthio; and substituted or unsubstituted arylthio groups; and wherein R1 and R4 are different when both R1 and R4 are not Formula II.