Binuclear organometallic complexes and organic electroluminescent display device using the same

An organic electroluminescent device, comprising:

• a pair of electrodes;
• and
• an organic layer interposed between said pair of electrodes, the organic layer comprising the binuclear organometallic complex represented by Formula 1:
• wherein M is a metal selected from the group consisting of Ir, Os, Pt, Pb, Re, Ru, and Pd;
• CyN is a substituted or unsubstituted C3-C60 heterocyclic group containing nitrogen bonded to M, or a substituted or unsubstituted C3-C60 heteroaryl group containing nitrogen bonded to M;
• CyC is a substituted or unsubstituted C4-C60 carbocyclic group containing carbon bonded to M, a substituted or unsubstituted C3-C60 heterocyclic group containing carbon bonded to M, a substituted or unsubstituted C3-C60 aryl group containing carbon bonded to M, or a substituted or unsubstituted C3-C60 heteroaryl group containing carbon bonded to M;
• alternatively, CyN-CyC is represented by one of Formulas:
• wherein each of R1, R2, R3 and R4, is indenendently a mono substituted or polysubstituted group, and is selected from the group consisting of hydrogen, a halogen atom, —OR, —N(R)2, —P(R)2, —POR, —PO2R, —PO3R, —SR, —Si(R)3, —B(R)2, —B(OR)2, —C(O)R, —C(O)OR, —C(O)N(R), —CN, —NO2, —SO2, —SOR, —SO2R, —SO3R, a C1-C20 alkyl group, and a C6-C20 aryl group, where R is hydrogen, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C10 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C40 aryl group, a substituted or unsubstituted C7-C40 arylalkyl group, a substituted or unsubstituted C7-C40 alkylaryl group, a substituted or unsubstituted C2-C40 heteroaryl group, and a substituted or unsubstituted C3-C40 heteroarylalkyl group;
• Y is a linker connecting two mononuclear organometallic complexes to each other;
• A is a group containing nitrogen bonded to M;
• X is a monoanionic monodentate ligand;
• and
• n is 1 or 2.

An organic electroluminescent device, comprising:

• a pair of electrodes;
• and
• an organic layer interposed between said pair of electrodes, the organic layer comprising the binuclear organometallic complex represented by Formula 1:
• wherein M is a metal selected from the group consisting of Ir, Os, Pt, Pb, Re, Ru, and Pd;
• Y is a linker connecting two mononuclear organometallic complexes to each other;
• A is a group containing nitrogen bonded to M;
• X is a monoanionic monodentate ligand;
• n is 1 or 2;
• and
• CyN-CyC is represented by one of the following formulas:
• wherein each of R1, R2, R3, R4, and R5 is independently selected from the group consisting of a monosubstituted or polysubstituted group, and is selected from the group consisting of hydrogen, a halogen atom, —OR, —N(R)2, —P(R)2, —POR, —PO2R, —PO3R, —SR, —Si(R)3, —B(R)2, —B(OR)2, —C(O)R, —C(O)OR, —C(O)N(R), —CN, —NO2, —SO2, —SOR, —SO2R, —SO3R, a C1-C20 alkyl group, and a C6-C20 aryl group, where R is hydrogen, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted C1-C10 alkoxy group, a substituted or unsubstituted C2-C20 alkenyl group, a substituted or unsubstituted C2-C20 alkynyl group, a substituted or unsubstituted C1-C20 heteroalkyl group, a substituted or unsubstituted C6-C40 aryl group, a substituted or unsubstituted C7-C40 arylalkyl group, a substituted or unsubstituted C7-C40 alkylaryl group, a substituted or unsubstituted C2-C40 heteroaryl group, and a substituted or unsubstituted C3-C40 heteroarylalkyl group;
• and
• Z is S, O, or NR0 where R0 is hydrogen or a C1-C20 alkyl group.