Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound of Formula I, is provided. In Formula I, one of Z1, Z2, and Z3 is N and the remainder are C; each of L1 and L2 is independently selected from a direct bond and a linking group; at least one of R1, R2, RA, RB, RC, RD, and RE comprises a group R* having a structure selected form the group consisting of Formula II, -Q(R3)(R4)a(R5)b, Formula III, and Formula IV, Each R, R?, R?, R1, R2, R3, R4, R5, RA, RB, RC, RD, RE, RF, RG, and RH is independently hydrogen or a General Substituent, with the proviso that group R* is not adamantyl. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided is a process for preparation of a compound of Formula 1 where, ring Y and ring Z are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring; Z1 and Z2 are each independently C or N; each RY and RZ independently represents mono to the maximum possible number of substitutions, or no substitution; x=1, 2, or 3; y=0, 1, or 2; and x+y=3.

Abstract: A compound including a bidentate ligand LA comprising a structure of Formula I, is disclosed. In Formula I, ring A? is a 7-, 8-, or 9-membered ring structure; X is of NR2, O, CR, CRR?, S, or SiRR?; each of RA?, R1, and R2 is independently hydrogen or a substituent; R1? is independently absent or a hydrogen or a substituent; any two adjacent RA?, R1, R1?, and R2 can be joined or fused to form a ring; the ligand LA is coordinated to a metal, which is selected from Os, Ir, Pd, Pt, Cu, Ag, or Au; and (1) at least one of R1 and R2 is coordinated to the metal M, or (2) at least one RA? comprises a 5- or 6-membered carbocyclic or heterocyclic ring that is not directly fused to Ring A? and is coordinated to the metal M, or both (1) and (2) are true. Formulations, devices, and consumer products including the compound are also disclosed.

Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided are organometallic compounds including a ligand LA of the following Formula I Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Imidazophenanthridine ligands and metal complexes are provided. The compounds exhibit improved stability through a linking substitution that links a nitrogen bonded carbon of an imidizole ring to a carbon on the adjacent fused aryl ring. The compounds may be used in OLEDs, particularly as emissive dopants in the emissive region in the OLEDs, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.

Abstract: Provided are compounds comprising ligands LA that are ligands of Pt and Ir complexes for OLED applications. Also provided are formulations comprising these compounds comprising ligands LA that are ligands of Pt and Ir complexes for OLED applications. Further provided are OLEDs and related consumer products that utilize these compounds comprising ligands LA that are ligands of Pt and Ir complexes for OLED applications.

Abstract: Provided are compounds comprising anionic bidentate ligands LA that are ligands of Pt and Ir complexes for OLED applications. Also provided are formulations comprising these compounds comprising anionic bidentate ligands LA that are ligands of Pt and Ir complexes for OLED applications. Further provided are OLEDs and related consumer products that utilize these compounds comprising anionic bidentate ligands LA that are ligands of Pt and Ir complexes for OLED applications.

Abstract: Provided is a compound including a ligand LA of that are useful as emitters in OLEDs.

Abstract: Provided are compounds of formula M(L1)(L2), wherein M is Pd or Pt; L1 is a tridentate ligand, or a substituted or unsubstituted cyclopentadienyl ligand; L2 is a bidentate ligand; if L1 is a tridentate ligand, then it is coordinated to M forming at least two 6-membered chelate rings; if L1 is a cyclopentadienyl ligand, then L2 is a monoanionic ligand; and L1 and L2 can be joined together by a linker. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Provided are high triplet host compounds based on a multiphenylene macrocycle which comprises at least one group L1 selected from the group consisting of O, S, Se, BR, BRR?, CRR?, SiRR?, and GeRR? which links two phenylene groups. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: A compound comprising a ligand LA of Formula I, is disclosed. In Formula I, each of Z1, Z2, Z3, Z4, Z5, and Z6 is C or N; K is selected from a direct bond, O, and S; if K is O or S, then Z6 is C; ligand LA is coordinated to a metal by the dash lines; M is coordinated to at least one other ligand; L1 is an organic linker; if M is selected from Ru, Os, or Ir, then K is O or S; if M is selected from Pt, Pd, Cu, Ag, or Au, and K is a direct bond, then M forms at least one bond to oxygen or sulfur; when M is selected from Pt, Pd, Cu, Ag, or Au, and K is O or S, then L1 is selected from —CR?N—, —CR?R?CR?R?—, —NR?BR?—, —CR?R?O—, —CR?R?S—, —CR??CR?O—, —CR??CR?S—, —CR??CR?NR—, —CR??CR?CR2—, —C(?N—)—, and —C(?CR—)—.

Abstract: Phosphorescent complexes are designed with intramolecular H-bonding properties to prevent deprotonation of neighboring molecules.

Abstract: Phosphorescent complexes are designed with intramolecular H-bonding properties to prevent deprotonation of neighboring molecules.

Abstract: A compound comprising a ligand LA of Formula I: as well as, devices and formulations containing the compound of Formula 1 are disclosed. In the compounds, having a ligand La of Formula I: wherein R1 represents mono, or di-substitution, or no substitution; wherein R2 represents di, tri, or tetra-substitution; wherein R is selected from hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein R1 and R2 are each independently selected from hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; wherein at least one pair of adjacent R2 substitutions are joined to form a fused ring; wherein the ligand LA is coordinated to a metal M; and wherein the ligand LA is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.

Abstract: Provided are organometallic compounds comprising a first ligand LA of Formula I wherein RA, RB, RC, RD, K3, ring A and ring B are each defined herein.

Abstract: The present invention includes novel hexadentate metal complexes. The complexes hexadentate ligands of the present invention may be useful as improved emitters in an OLED device.

Abstract: Provided are compounds comprising a ligand LA of Formula I

Abstract: Provided are a compound of formula Ir(LA)x(LB)y(LC)z wherein LA has