Abstract: Provided are compounds of Formula I that are useful as emitters in OLEDs.

Abstract: A compound comprising a structure of Formula I, In Formula I, moiety C is a monocyclic ring or a polycyclic fused ring system; each of Z1-Z2 and X1—X9 is C or N; Y1 is C, N, O, S, Se, P, or As; if Y1 is O, S, or Se, then either A2, R4, and L3 are absent or A1, R3, and L2 are absent; K is a direct bond or a linker; each of A1 and A2 is C, B, Ge, S, Si, N, P, or As; each of L1, L2, and L3 is absent, a direct bond, or a linker; at least two of L1, L2, and L3 are present; metal M is Pd or Pt; and each R, R?, R*, R1, R2, R3, R4, RA, RB, RC, R?, and R? is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organic compounds comprising at least one germy or silyl group which is attached to a 6-membered aromatic carbocyclic or heterocyclic ring. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organic compounds.

Abstract: Provided are organometallic compounds comprising a ligand comprising at least two moieties A and B which are linked by a linking group L2, wherein the ligand is coordinated to a central metal atom M. 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: Provided are organic compounds comprising a nitrogen-containing 5-membered aromatic or non-aromatic ring, wherein the ring nitrogen is a tertiary nitrogen having bonds to three different carbon atoms. Also provided are formulations comprising these organic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organic compounds.

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 compounds of Formula I that are useful as emitters in OLEDs.

Abstract: A compound having a first ligand LA of Formula I, is provided. In Formula I, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; each of Z1 and Z2 is C or N; K is a direct bond or a linking group; R* includes a moiety selected from an electron-withdrawing group, heteroaryl, BRR?, SiRR?R?, GeRR?R?, OR, SR, SeR, PRR?, PRR?R?, AsRR?, AsRR?R?, or a combination thereof; each R, R?, R?, R*, R?, R?, RA, and RB is a hydrogen or a General Substituent defined herein; LA is coordinated to a metal M having an atomic mass of at least 40; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound of the following Formula I is provided. In Formula I, A is C, B, Si, Ge, or Sn; each of X1 to X22 is independently C or N; Z1 and Z2 are each independently B or N; when A is B, one of X4, X5, X12, and X22 is N, and the remainder are C; when A is C, at least one of Z1 and Z2 is B; each of Y1, Y2, Y3, and Y4 is independently O, S, Se, NR, CRR?, SiRR?, GeRR?, and SnRR?; one of both of Y1 and Y2 are present; one of both of Y3 and Y4 are present; each R, R?, RA, RB, RC, RD, RE, and RF is independently hydrogen or a variety of substituents; and any two adjacent R, R?, RA, RB, RC, RD, RE, and RF can be joined or fused to form a ring. Devices, consumer products, and formulations including the compound are also disclosed.

Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand comprised of a fused heterocyclic structure containing boron. The disclosed ligands form two bonds to the metal forming a 6-membered chelate and can be further substituted to form tridentate or tetradentate ligands.

Abstract: Provided are compounds comprising a ligand LA of Formula I where the ligand LA is coordinated to Ir.

Abstract: A compound having a structure of Formula I In Formula I, M is Pd or Pt; each of X1 to X12 is independently C or N; ring A is a 5-membered or 6-membered ring; K1 and K2 are selected from a direct bond, O, S, and NR; L1 is an organic linker; Y1 is selected from O, S, BR, PR, Se and NRY; each R, RY, RA, RB, RC, and RD is hydrogen or a substituent; and any two substituents can be joined or fused to form a ring. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Provided are organometallic compounds comprising two moieties A and B which are each independently a monocyclic ring or a polycyclic fused ring structure, wherein the monocyclic ring or each ring of the polycyclic fused ring structure is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring which are linked by a direct bond and which are further bridged by a linker comprising two groups which are each independently selected from the group consisting of O, S, Se, NR, BR, BRR?, PR, CR, C?O, C?NR, C?CRR?, C?S, CRR?, SO, SO2, P(O)R, SiRR?, and GeRR?. 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: Provided are novel organic compounds having a structure of Formula I: Also provided are formulations having these organic compounds. Further provided are OLEDs and related consumer products that utilize these organic 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: An improved organic light emitting device is disclosed that includes an emissive layer between an anode and a cathode, where the emissive layer has an aggregate of one or more neutral transition metal complexes having a square planar geometry. At least one of the one or more neutral transition metal complexes has a coordination metal selected from Ni, Pd, and Au. When a voltage is applied across the anode and cathode at room temperature, the emissive layer emits a luminescent radiation that has a first luminescent radiation component produced from exciplex formation by the transition metal complexes present in the emissive layer, and the first luminescent radiation component has a peak maximum wavelength ?max that is ?500 nm at room temperature.

Abstract: A compound is disclosed that is selected from the group consisting of a structure having and a structure having

Abstract: Provided are multi-NBN host compounds. The compound has the structure of Formula I: Also provided are formulations comprising these multi-NBN host compounds. Further provided are OLEDs and related consumer products that utilize these multi-NBN host compounds.

Abstract: Provided are organometallic compounds wherein a central metal atom is coordinated by a tetradentate ligand comprising at least four 5- or 6-membered carbocyclic or heterocyclic rings, wherein one of the at least four 5- or 6-membered carbocyclic or heterocyclic rings is fused to an imidazole ring. 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: Provided are organometallic compounds comprising a Pt or Pd as the central metal atom which is coordinated by a tetradentate ligand comprising a saturated carbene ring and at least one 6-membered aromatic carbocyclic ring. 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.