Metal complexes of cyclometalated imidazo 1,2-f phenanthridine and diimidazo 1,2-a: 1 ', 2'-c quinazoline ligands and their isoelectronic and benzofused analogs

摘要

The invention relates to a compound comprising a phosphorescent metal complex comprising a monoanionic, bidentate ligand; wherein the metal is selected from the group consisting of the non-radioactive metals with atomic numbers greater than 40; and wherein the bidentate ligand comprises a carbene donor and may be linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.