Organic luminescent materials containing tetraphenylene ligands

An electroluminescent device comprising:

• an anode,
• a cathode,
• and an organic layer, disposed between the anode and the cathode, comprising a metal complex comprising a partial structure represented by Formula 1:
• Wherein
• Cy is a substituted or unsubstituted aryl or heteroaryl group having 5 to 24 aromatic ring atoms;
• Cy is bonded to M via a carbon atom or nitrogen atom;
• M is selected from the group consisting of Cu, Ag, Au, Ru, Rh, Pd, Os, Ir, and Pt;
• X1 to X16 are independently selected from N, C, or CR;
• wherein R is selected from the group consisting of hydrogen, deuterium, halogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 20 ring carbon atoms, a substituted or unsubstituted heteroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted arylalkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
• two adjacent substituents are optionally joined to form a ring;
• X1, X2, X3 or X4 is connected to M through a metal-carbon bond or metal-nitrogen bond.