Abstract: A compound of Formula I, Formula II, or Formula II may be used as a host material in light-emitting devices, such as devices comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode; said organic layer comprising a compound of Formula I, Formula II, or Formula II.

Abstract: A compound having a formula of Ir(LA)a(LB)b(LC)c, wherein LA has a structure of Formula I, LB has a structure of Formula II, and LC is a bidentate ligand is provided. In the compound, b and c are each independently 0 or 1, with the proviso that if c is 1, then b is 1. R1, R2, R3 and R4 is independently a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, selenyl, and combinations thereof. Compositions, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a first ligand LA with a structure of Formula I, is provided. In Formula I, each of X1 to X12 is C or N; Y is a linker; R* is a saturated moiety, with the proviso that if R* is methyl, then it includes one or more D atom; each RA, RB, and RC is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M. Compositions, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a formula Ir(LA)(LB)2 is provided that includes a structure of Formula I, In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; X1 to X7 are C or N; Q is C, Si, or Ge; Y is a linking group; each R1, R2, R3, RA, RB, RC, RD, RE, RY, and RY? is hydrogen or a General Substituent defined herein; and any two of R1, R2, R3, RA, RB, RC, RD, RE, RY, and RY? may be joined or fused to form a ring. Compositions, OLEDs, and consumer products containing the compound are also provided.

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

Abstract: Provided are organic compounds comprising at least five 6-membered rings which are fused together, wherein at least two of five 6-membered rings are aromatic and two others of the five 6-membered rings share one carbon and either a nitrogen or a boron atom. Also provided are formulations comprising these organic compounds. Further provided are compounds, organic light emitting devices (OLEDs) as well as related consumer products that utilize these organic compounds.

Abstract: A compound including a structure of Formula I, is provided. In Formula I, M is Pt, Pd, or Au; moiety A is a 5-membered or 6-membered ring; each of moiety B, C, and D is a monocyclic ring or a polycyclic fused ring system; each of X1 to X6 and Z1 to Z3 is C or N; X9 is CRE or N; each of K1 and K2 is independently a direct bond or a linking group; each of L1 to L3 is a direct bond or a linking group; each R substituent is hydrogen or a General Substituent defined herein; and at least one of RF and RF? is not hydrogen, and at least one of RG and RG? is not hydrogen. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are 2-coordinate metal complexes compounds as sensitizers of fluorophores. Also provided are formulations comprising these 2-coordinate metal complexes compounds. Further provided are OLEDs and related consumer products that utilize these 2-coordinate metal complexes compounds. The OLED includes an emissive region that contains a first compound that is a sensitizer having a structure of Formula I: and an acceptor.

Abstract: A compound comprising a structure of Formula I, disclosed. In Formula I, each of YA, YB, YC, and YD is independently a linking group, which may be substituted; at least one of R1, R2, R3, or R4 is or includes an electron-withdrawing group; each substituent is independently hydrogen or a substituent selected from the group consisting of the General Substituents defined herein; and any two substituents may be joined or fused to form a ring. OLEDs and consumer products containing the compound are also provided.

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 of formula Ir(LA)x(LB)y(LC)z is provided where x is 1, 2, or 3; each of y and z is 0, 1, or 2; and x+y+z=3. In the compound, the first ligand LA includes a structure of Formula I, where each of moiety A and, when present, moiety C is a monocyclic ring or a polycyclic fused ring system; each of Z1, Z2, and X1 to X6 is C or N; each of Y1 and Y2 is a linker; K is a direct bond or a linker; each R, R?, R?, R?, RA, RB, and, when present, RC is hydrogen or a General Substituents defined herein. Compositions, OLEDs, and consumer products containing the compound 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: An organic light emitting device (OLED) is provided that includes an anode; a cathode; and an emissive region disposed between the anode and the cathode, where the emissive region comprises a first dopant D1 that is a phosphorescent material or a fluorescent material in the OLED at room temperature, a first host H1, a second host H2, and a third host H3. In addition, H1 has an evaporation temperature T1 of 150 to 450° C.; H2 has an evaporation temperature T2 of 150 to 450° C.; H3 has an evaporation temperature T3 of 150 to 450° C.; and the absolute difference between each of T1, T2, and T3 is less than 20° C. A composition that includes at least two of D1, H1, H2, H3, and an acceptor A1, and a method of using the formulation are also provided.

Abstract: Provided are organic compounds comprising at least two 6-membered rings which each contain at least one nitrogen atom and which are fused together so that both 6-membered rings share one nitrogen atom and one carbon atom. Also provided are formulations comprising these organic compounds. Further provided are organic might emitting devices (OLEDs) as well as related consumer products that utilize these organic compounds.

Abstract: An OLED whose emissive layer has compound Ir(LA)2(LB), LA has the structure. and LB has the structure, where moieties A, B, C, and D are each a monocyclic ring or a polycyclic fused ring system; at least one of moiety B or moiety D is a polycyclic fused ring system; Z1 to Z8 are each C or N; L1 and L2 are each a direct bond or a linking group; K1 and K2 are each a direct bond or a linking group; each R, R?, R?, R?, RA, RB, RC, and RD is hydrogen or a General Substituent defined herein; LA and LB are different; and the first triplet excited state energy of Ir(LA)3 is lower than the first triplet excited state energy of Ir(LB)3 or the molecular weight of LA is larger than that of LB.

Abstract: A composition is provided that includes at least one of a first compound, a second compound, or a third compound, where the first compound is a phosphorescent material capable of functioning as a phosphorescent emitter in an OLED at room temperature; the second compound is a fluorescent material capable of functioning as a fluorescent emitter in an OLED at room temperature; the third compound is a host material capable of functioning as a host in an OLED at room temperature; and at least one of the first compound, the second compound, or the third compound comprises at least one substituent R*. OLEDs containing the composition and methods of making an OLED using the composition are also provided.

Abstract: Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions: (1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and (2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.

Abstract: A compound having a first ligand LA has a structure of Formula I, where two RC or two RD are joined together to form a structure of Formula II, fused to ring C or ring D, respectively. In Formula I, each of moiety A and moiety B is a ring or a polycyclic fused ring system; each of X1 to X13, Z1, and Z2 is C or N; K is a direct bond or a linking group; Y is a linking group; L is a direct bond or a linking group; each substituent is hydrogen or a General Substituent defined herein; and at least one of the following is true (i) one RA and one RD are joined to form a ring AD, or (ii) one RC and one RD are joined to form a ring CD. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound including a first bidentate ligand LA that includes a structure of Formula I, are provided. The ligand LA is coordinated to a metal M and can be joined with other ligands. In Formula I, in addition to some exclusions, each of X1, X2, X3, and X4 is C or N; two R1, R2, and R3 can be joined or fused to form a ring; and each R1, R2, and R3 is independently a group containing the metal M, a hydrogen, or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a 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; each of X1 to X3, Z1, and Z2 is C or N; X is a linking group; each RX, RX?, R1, RA, and RB is a hydrogen or a General Substituent defined herein; and metal M is Ir, Rh, Re, Ru, Os, Pt, Pd, Ag, Au, or Cu. Compositions, OLEDs, and consumer products containing the compound are also provided.