Abstract: A compound comprising a ligand LA of Formulae I, II, or III wherein the ligand LA is coordinated to a transition metal M, and optionally, M is also coordinated to a ligand LB; A is N, B, or CR7; Y is absent, or selected from the group consisting of C(O), C(Rya)(Ryb), C?C(Rya)(Ryb), and Si(Rya)(Ryb), where if Y of Ring A is absent then ring carbon of R2 is bonded to N; wherein for the compounds of formula III at least one of R2, R3, and R4 is selected from N(Ar1)RN? or aryloxy; wherein Ar1 is selected from aryl or heteroaryl, each of which is optionally substituted. An OLED that includes an organic layer disposed between an anode and a cathode, and the organic layer includes a compound comprising a ligand LA of Formulae I, II, or III above. The OLED can be incorporated into one or more of a consumer product, e.g., an electronic component module, a flat panel display, e.g., a display for a phone, television, laptop, and/or a lighting panel for either commercial or residential applications.

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

Abstract: A compound comprising a metal M and a first ligand LA having a structure of Formula I, is described. In Formula I, each independently represents a single bond or a double bond; each of X1? to X4? is independently C, N, or NR?; at least one of X1 to X4 is NR?; each RA?, R?, R1, R2, and R3 is independently hydrogen or a general substituent; at least one of RA?, R?, R1, R2, and R3 comprises the metal M; when X1 and X2 are both NR?, the B atom of Formula I forms a maximum of one direct bond to a nitrogen atom, and does not form a direct bond to an oxygen atom; and any two adjacent RA, R?, R1, R2, and R3 can be joined or fused to form a ring. Formulations, OLEDs, and consumer products including the compounds are also described.

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

Abstract: A compound that includes a ligand LA of Formula I, the ligand LA coordinated to a metal M wherein X1 to X11 are each independently selected from CRA or N; RA, RB, and RC independently represent mono to the maximum possible substitution, or no substitution; wherein at least one of RA, RB, or RC is selected from the group consisting of wherein X12, X13, X14, and X15 are independently selected from CRD or N, and two of X12, X13, X14, or X15 are N; with the proviso that R1 and R2, and R3 and R4, do not join to form a fused benzene ring; and wherein the metal M is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Au, Ag, and Cu, and ligand LA is optionally linked to another ligand to form a tridentate, tetradentate, pentadentate, or hexadentate ligand. A compound of Formula VI. The invention is also directed to an OLED that includes an organic layer that comprises a compound of Formula I or Formula VI, and a consumer product that includes the described OLED.

Abstract: A compound comprising a metal M and a first ligand LA having a structure of Formula I, is described. In Formula I, each independently represents a single bond or a double bond; each of X1? to X4? is independently C, N, or NR?; at least one of X1 to X4 is NR?; each RA?, R?, R1, R2, and R3 is independently hydrogen or a general substituent; at least one of RA?, R?, R1, R2, and R3 comprises the metal M; when X1 and X2 are both NR?, the B atom of Formula I forms a maximum of one direct bond to a nitrogen atom, and does not form a direct bond to an oxygen atom; and any two adjacent RA, R?, R1, R2, and R3 can be joined or fused to form a ring. Formulations, OLEDs, and consumer products including the compounds are also described.

Abstract: Novel iridium complexes containing phenylpyridine and pyridyl aza-benzo fused ligands are described. The complexes are useful as light emitters when incorporated into OLEDs.

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

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

Abstract: Novel iridium complexes containing phenylpyridine and pyridyl aza-benzo fused ligands are described. These complexes are useful as light emitters when incorporated into OLEDs.

Abstract: Provided are compounds having a first ligand LA having a structure of Formula I: that are useful in OLED application and provide improved OLED properties.

Abstract: Provided are organoboron compounds of that are useful as host material in OLEDs. Also provided are formulations comprising these organoboron compounds. Further provided are OLEDs and related consumer products that utilize these organoboron compounds.

Abstract: Provided are organoboron compounds of that are useful as host material in OLEDs. Also provided are formulations comprising these organoboron compounds. Further provided are OLEDs and related consumer products that utilize these organoboron compounds.

Abstract: A compound having the formula Ir(LA)n(LB)3-n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein each of A1 to A8 comprise carbon or nitrogen; wherein at least one of A1 to A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R? and R? each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R?, R?, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R?, and R? are each independently selected from a variety of substituents; wherein R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein n is an integer from 1 to 3; and wherein total number of carbons in at least one of the pairs R3 and R4, and

Abstract: A compound that includes a ligand LA of Formula I or of Formula IV, the ligand LA coordinated to a metal M The compound may function as an emitter in an organic light-emitting device (OLED). The invention is also directed to an OLED that includes an organic layer that comprises a compound of Formula I or Formula VI, and a consumer product that includes the described OLED.

Abstract: Provided are neutral Pt or Pd compounds comprising a tridentate and a monodentate ligand, wherein the tridentate ligand comprises at least three 5- or 6-membered rings. Also provided are formulations comprising these neutral Pt or Pd compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these neutral Pt or Pd compounds.

Abstract: A compound having the formula Ir(LA)n(LB)3-n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein each of A1 to A8 comprise carbon or nitrogen; wherein at least one of A1 to A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R? and R? each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R?, R?, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R?, and R? are each independently selected from a variety of substituents; wherein R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein n is an integer from 1 to 3; and wherein total number of carbons in at least one of the pairs R3 and R4, and

Abstract: A compound comprising a first ligand LA of Formula I or Formula II: wherein A1 and A2 are each independently C or Si; wherein each RA, and RB independently represents mono to the maximum allowable substitution, or no substitution; wherein each X1, X2, and X3 is independently C or N; wherein each R, R1, R2, R3, R4 and RA is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein LA is complexed to a metal M; wherein M is optionally coordinated to one or more other ligands; wherein the ligand LA is optionally linked with the one or more other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand; and wherein any two substituents are optionally j

Abstract: Provided are organometallic compounds comprising an at least bidentate ligand comprising at least five cyclic moieties and a central metal ion which is preferably Ir or Pt. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.

Abstract: A compound comprising a ligand LA of Formulae I, II, or III wherein the ligand LA is coordinated to a transition metal M, and optionally, M is also coordinated to a ligand LB; A is N, B, or CR7; Y is absent, or selected from the group consisting of C(O), C(Rya)(Ryb), C?C(Rya)(Ryb), and Si(Rya)(Ryb), where if Y of Ring A is absent then ring carbon of R2 is bonded to N; wherein for the compounds of formula III at least one of R2, R3, and R4 is selected from N(Ar1)RN? or aryloxy; wherein Ar1 is selected from aryl or heteroaryl, each of which is optionally substituted. An OLED that includes an organic layer disposed between an anode and a cathode, and the organic layer includes a compound comprising a ligand LA of Formulae I, II, or III above. The OLED can be incorporated into one or more of a consumer product, e.g., an electronic component module, a flat panel display, e.g., a display for a phone, television, laptop, and/or a lighting panel for either commercial or residential applications.