| abstract |
A compound including a first ligand L A of Formula I, n n n n n n n n n n is disclosed. In Formula I, moiety A is a monocyclic or polycyclic ring structure comprising 5-membered and/or 6-membered rings; each R 1 and R A is independently hydrogen or a general substituent; L A is coordinated to a metal M, selected from the group consisting of Os, Ir Pd, Pt, Cu, Ag, and Au; metal M can be coordinated to other ligands; and any two of R 1 and R A can be joined or fused together to form a ring. Formulations, OLEDs, and consumer products containing the compound, as well as, methods of making the compound are also disclosed. |