Abstract: A compound comprising a ligand LA coordinated to a metal M, the ligand LA selected from the group consisting of Formula I, Formula II, and Formula III ring A is a 5- or 6-membered carbocyclic or heterocyclic ring; wherein ring A of Formula I connects to ring B at X1, X2, or X3 to form a five-membered chelate ring with the metal; Z1 and Z2 are independently selected from C or N; and X1 to X10 are independently selected from C or N. An organic light emitting device (OLED) comprising an anode, a cathode and an organic layer disposed between the anode and the cathode, the organic layer comprising a compound selected from Formula I, Formula II, or Formula III, and a consumer product comprising the OLED.

Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

Abstract: A compound including a first ligand LA of Formula I is disclosed. The compound is useful as an emitter in phosphorescent OLEDs.

Abstract: The present invention includes novel transition metal complexes with 1,2,4-triazine derivatives as ligands. The materials may be useful as emitter materials in organic electroluminescence device to improve the performance.

Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.

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: Compound of Formula I, is provided. In Formula I, rings A, B, C, and D are 5- or 6-membered rings; each of X1-X5, X21-X22, and Z1-Z3 is C or N; each of L1, L2, and L3 is selected from a direct bond or a divalent linker; each of a and b is 0 or 1; Y is 0, S, Se, or NRY; W is O, S, NRW, C?RW, or CRWRW?; up to 1 of Z1 to Z3 is N; each R, R?, RA, RB, RC, RD, RY, RW, and RW? is hydrogen or a substituent. Formulations, OLEDs, and consumer products containing the same are also disclosed.

Abstract: A compound having a structure of Formula I, provided. In Formula I, each of R1 to R7 is hydrogen or phenyl or a system consisting of two to ten phenyl groups connected to each other; at least two of R1 to R7 are not hydrogen; each of R8 and R9 are phenyl or a system consisting of two to ten phenyl groups connected to each other; X is O, S, or Se; and L is a direct bond or In the structure of L, m is an integer from 1 to 5, and RA is hydrogen, an aromatic or a heteroaromatic ring. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: An OLED including an organic layer that contains metal complex compounds that are useful as a phosphorescent emitter is disclosed. The metal complex compounds include ligands that incorporate fluorinated side chains and has at least one substituent R selected from the group consisting of partially fluorinated alkyl, partially fluorinated cycloalkyl, and combinations thereof, wherein R is directly bonded to an aromatic ring, In the compound, C having an F attached thereto is separated by at least one carbon atom from the aromatic ring.

Abstract: A compound including a first ligand LA of Formula I is disclosed. The compound is useful as an emitter in phosphorescent OLEDs.

Abstract: A compound including a first ligand LA selected from the following group: is disclosed.

Abstract: Provided are compounds containing platinum which is coordinated by a tetradentate ligand wherein the tetradentate ligand comprises at least one five-membered ring comprising at least one nitrogen atom which is fused to a further five- or six membered ring. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: A compound comprising a hexadentate ligand of Formula I coordinated to a metal selected from the group consisting of iridium, rhodium, and osmium wherein rings A, D, and E are independently a 5-membered or 6-membered heteroaryl ring, or a 6-membered aryl ring; rings B, C, and F are independently 6-membered heteroaryl ring, or a 6-membered aryl ring; T1, T2, T3, T4, T5, and T6 are independently selected from C or N, wherein two to four of T1 to T6 are C, and two to four of T1 to T6 are N; Z1, Z2, Z3, and Z4 are independently selected from C or N, wherein if Z1 and Z2 are each N then T1 is a carbene carbon and two of T2 to T6 are N; J1 to J11 are independently selected from C or N, wherein if any one of J1 to J4 is N then ring F has no more than three N, if any one of J5 to J7 is N then ring B has no more than three N, or if any one of J8 to J11 is N then is N then ring C has no more than three N; Y1 is selected from the group consisting of CR1, SiR1, B, or N; Y2 is selected from the group consisting of C

Abstract: Provided are a compound of Formula I Ir(LA)x(LB)y(LC)z, where x is 1 or 2; y is 1 or 2; z is 0, or 1, with x+y+z=3; LA is a ligand of Formula II

Abstract: Provided is a new class of phosphorescent emitters. The inventive emitters feature a benzimidazole phenoxide ligand, which is connected via “top linkers” to form novel tetradentate ligands. These phosphorescent emitters are Pt tetradentate complexes when used in OLEDs as emitters improves device external quantum efficiency (EQE) and operational lifetimes.

Abstract: Provided are organometallic compounds having a formula Ir(LA)(LB)(LC), wherein: ligand LA is ligand LB is and ligand LC is Also provided are formulations including 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 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 having the formula Ir(LA)(LB), where LA has a structure of Formula I and LB is a bidentate ligand is disclosed. In the structure of Formula I, rings A, B, C, and D are each independently 5- or 6-membered carbocyclic or heterocyclic rings; each of Z1 to Z8 is C or N; LA has at least one Ir—C bond; L is CR or N; each R1 R2, R3, and R4 is independently hydrogen or one of the preferred general substituents; and any two substituents may be joined or fused together to form a ring. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.

Abstract: An OLED including an organic layer that contains metal complex compounds that are useful as a phosphorescent emitter is disclosed. The metal complex compounds include ligands that incorporate fluorinated side chains and has at least one substituent R selected from the group consisting of partially fluorinated alkyl, partially fluorinated cycloalkyl, and combinations thereof, wherein R is directly bonded to an aromatic ring, In the compound, C having an F attached thereto is separated by at least one carbon atom from the aromatic ring.

Abstract: A compound of Formula (LA)n-M-(LC)m, wherein the ligand LA is of Formula I, and the ligand LC is selected from Formula I that is different than ligand LA, a monoanionic bidentate ligand, or a monoanionic monodentate ligand. M is a metal; and n is 1 or 2, and m is 0, 1 or 2. Ring A is a 5-membered or 6-membered heteroaryl ring, which is bonded to Ring B; Z is selected from O or S; Z1 is selected from a carbene C or N; and Z2 is selected from C or N. Moreover, two adjacent ring carbons of Ring B will form a group of formula D, wherein * represents the point of attachment to the two adjacent ring carbons, Formula D, wherein X is selected from NRN, O, S, or Se; and RN is selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, heteroalkyl, aryl, heteroaryl, and combinations thereof; and Y1, Y2, Y3, and Y4 are independently CRY1, CRY2, CRY3, and CRY4, respectively, or N, and Ring D has no more than two nitrogen ring atoms.