Patent ID: 8053090

Claim:
A multinuclear copper complex represented by one of Formulae 1 through 2: where A and B of Formula 1 are each independently a C 2 -C 6 heteroaromatic ring containing a hetero atom X and having at least one substituent selected from the group consisting of a C 5 -C 20 cycloalkyl group, a C 6 -C 20 aryl group, a C 1 -C 20 heteroaryl group, a silyl group, a boryl group, and a hole transporting moiety; and X of A and X of B in Formula 1 are independently N, P, S, or O; where A and B of Formula 2 are the same or different and are each a substituted or unsubstituted heteroaromatic ring containing a hetero atom X or a substituted or unsubstituted aliphatic or aromatic group bonded to X, and A and B of Formula 2 optionally have at least one substituent selected from the group consisting of a C 5 -C 20 cycloalkyl group, a C 6 -C 20 aryl group, a C 1 -C 20 heteroaryl group, a silyl group, a boryl group, and a hole transporting moiety; X of A and X of B in Formula 2 are independently N, P, S, or O; and Y is a bond or a group selected from the group consisting of a substituted or unsubstituted C 1 -C 20 alkylene group, a substituted or unsubstituted C 6 -C 20 arylene group, a substituted or unsubstituted C 5 -C 20 cycloalkylene group, a substituted or unsubstituted C 1 -C 20 heteroarylene group, a silyl group, and a boryl group.