Patent ID: 6867309

Claim:
A red-emitting organic electroluminescent compound of the formula: wherein n is an integer of 1˜6; wherein Ar is selected from a group consisting of an aryl, wherein the aryl is selected from the group consisting of a substituted or unsubstituted phenyl and a substituted or unsubstituted biphenyl; wherein R 1 is selected from a group consisting of an alkyl of from 1 to 20 carbon atoms, and an aryl, wherein the aryl is selected from the group consisting of a substituted or unsubstituted phenyl and a substituted or unsubstituted biphenyl; wherein R 2 is selected from a group consisting of an alkyl of from 1 to 20 carbon atoms and an aryl, wherein the aryl is selected from the group consisting of a substituted or unsubstituted phenyl and a substituted or unsubstituted biphenyl; wherein R 3 is selected from a group consisting of a hydrogen, an alkyl of from 1 to 10 carbon atoms and a alkyl methyl silane group; wherein R 4 is selected from a group consisting of a hydrogen, an alkyl of from 1 to 10 carbon atoms and a alkyl methyl silane group; wherein R 5 is selected from a group consisting of an alkyl of from 1 to 20 carbon atoms, and an aryl, wherein the aryl is selected from the group consisting of a substituted or unsubstituted phenyl; and wherein R 6 is selected from the group consisting of an alkyl of from 1 to 10 carbon atoms.