Abstract: A compound having a Formula Ir(LA)x(LB)y(LC)z, where each of x and y is independently 1 or 2, z is 0 or 1, and x+y+z=3; ligand LA comprises a structure of Formula I, ligand LB comprises a structure of Formula II, and ligand LC is a bidentate ligand. In Formula I and Formula II, each of X2 to X17 is independently C or N; each R2, RA, RB, RC, RD, RE is hydrogen or a General Substituents defined herein; R1 is one of the General Substituents defined herein; and at least one of R1, R2, RA, RB, RC, RD, and RE comprises an electron-withdrawing group, moiety E. Compositions, OLEDs, and consumer products containing the same are also provided.

Abstract: A compound having a first bidentate ligand LA comprising a structure of Formula I: is provided. In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; moiety C is an cyclic moiety; each of Z1 to Z5 is C or N; K is a direct bond or a linking group; each R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M, which may be coordinated to other ligands. Compositions, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a compound of formula Ir(LA)x(LB)y(LC)z, where LA comprises Formula I, LB comprises Formula II, LC is a bidentate ligand; and at least one R comprises Formula III, In these structures, each of moieties A, C, and D is a ring or a fused ring system; each of X1 to X13 and Z1 to Z6 is C or N; Y1 is a linking group; each of K, K?, LA, L?, and L? is a direct bond or a linking group; each substituent is hydrogen or a General Substituent. In addition, at least two RG are not H or D, and one has ?2 carbon atoms, and (1) a third one of X9 to X13 is C and the RG attached thereto comprises an electron-withdrawing group other than F; or (2) L? comprises a heterocyclic ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds comprising at least one monoanionic bidentate ligand LA represented by Formula I or a tautomer thereof. Also provided are formulations comprising compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Provided are compounds of Formula (I). Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.