Abstract: Provided are organometallic compounds containing a gold atom as the central metal atom which is coordinated by a tetradentate ligand comprising at least four monocyclic or fused polycyclic ring system as described herein. 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: Complexes and devices, such as organic light emitting devices and full color displays, including a compound of the formula: wherein: M is Pd2+, Ir+, Rh+, or Au3+; each of V1, V2, V3, and V4 is coordinated to M and is independently N, C, P, B, or Si; each of L1, L2, L3, and L4 is independently a substituted or unsubstituted aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, carbene, or N-heterocyclic carbene; and Z is O, S, NR, CR2, SiR2, BR, PR, ?where each R is independently substituted or unsubstituted C1-C4 alkyl or substituted or unsubstituted aryl.

Abstract: Provided is an organic light emitting device including an anode; a cathode; and an emissive region disposed between the anode and the cathode is provided. The emissive region includes a first compound H1, and a second compound D1; the first compound H1 and the second compound D1 are mixed together in one layer; the first compound H1 is a first host and has a lowest unoccupied molecular orbital energy level, ELUMO,H1, that is lower than ?2.6 eV; the second compound D1 can be an emissive dopant or a sensitizer in the OLED; and the second compound D1 has a highest occupied molecular orbital energy level, EHOMO,D1, that is lower than ?5.3 eV, with a proviso that if the first compound H1 comprises a triazine, then ELUMO,H1, is lower than ?2.8 eV.

Abstract: A compound having a formula of Ir(LA)n(LB)m(LC)o, wherein first ligand LA comprises a structure of Formula I, LB comprises a structure of Formula IIA, or Formula IIB, and LC is a bidentate ligand. In these structures, n is 1 or 2, m is 1 or 2, o is 0 or 1, and m+n+o=3; each of moiety A, moiety D, and moiety F is a monocyclic ring or polycyclic fused ring system; moiety B is a polycyclic fused ring system; each of Z1 to Z6 and X1 to X7 is C or N; Y1 is O, S, Se, Te, P, Si, and Ge; and each RA, RB, RC, RD, RE, and RF is hydrogen or a General Substituent. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organic compounds comprising at least three 6-membered aromatic rings A, B, and C which are all directly bonded to the same central nitrogen atom, wherein rings A and B as well as rings A and C are further connected via a direct bond so to form each a five-membered ring containing the central nitrogen atom. 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: An organic light emitting device having an anode; an emissive region; and a cathode is provided. The emissive region can be disposed between the anode and the cathode. The emissive region can include a first compound, D1, which is a first metal complex; and a second compound, D2, which is a second metal complex, where D1 and D2 are different. The emission from the OLED does not primarily originate from D2 or from an exciplex between D1 and D2, the emission from the OLED has an emission peak maximum between 300 to 2000 nm; and, when the emission from the OLED has a peak between 550 and 700 nm, then D2 is not a Be, Al, or Ir complex. Consumer products containing the OLED are also provided.

Abstract: A compound of Formula I: wherein ring A is a 5-membered or 6-membered aromatic ring; wherein RA, RB, and RC each independently represent mono to the maximum allowable substitution, or no substitution; wherein Y1 is absent or present, and when present is selected from the group consisting of a direct bond, O, S, Se, CRR?, NR, SiRR?, and BR; wherein each X1—X3 is N or CR; wherein at least one of X1—X3 is N; wherein each A1-A5 is independently C or N; wherein the maximum number of N atoms that can connect to each other within each ring is two; wherein each R1, R2, R3, and R4 is independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof; wherein each R, R?, RA, RB, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroa

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: Disclosed are platinum or palladium complexes featuring tetradentate ligands with at least one side that has an NN binding motif are disclosed. The disclosed organometallic compounds have a structure of where M is Pt or Pd. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound comprising a structure of Formula I, is provided. In Formula I, ring A is a heterocyclic ring; ring B is a 5- or 6-membered ring, and rings C and D are 6-membered rings; one of Z1, Z2, and Z3 is N and the remainder are C; at least one of K1, K2, and K3 is O or S; one of L1 and L2 is absent and the other one is a direct bond or a linker; when m=0, L1 is not present and X1 is NRA?; each R, R?, R?, RA?, RA, RB, RC, and RD is independently hydrogen or a General Substituent; and any two substituents may be joined or fused together to form a ring. Formulations, OLEDs, and consumer products incorporating such compounds are also provided.

Abstract: A compound having a structure of Formula I, and a structure of Formula II, fused directly or indirectly to one of moiety A, B, C, or D is provided. In Formulae I and II, each of moieties A, B, C, and D is a monocyclic ring or a polycyclic fused ring system; one of Z1, Z2, and Z3 is N and the other two are C; each of L1, L2, and L3 is a direct bond or a linker; K1 is a direct bond, O, or S; M is Pt or Pd; represents a single bond or a double bond; each of X1 to X6 is C or N; each of Q1, Q2, and Q3 is CRQ or CRQRQ?; n is 1 to 5; and each R, R?, RA, RB, RC, RD, RF, RQ, and RQ? is hydrogen or a General Substituent. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); LA is coordinated to Ir through the indicated dashed lines; at least one of the following conditions is true: (1) R1 comprises at least five carbon atoms, and (2) two RB substituents are joined together to form a structure of Formula II, fused to ring B; X is CRX or N; Y is selected from a variety of linkers; each R, R?, R?, R?, R?, RA, RB, RX, R1, and R2 is hydrogen or a General Substituent; and Ir may be coordinated to other ligands. Compositions, OLEDs, and consumer products including the compound are also provided.

Abstract: Provided are organometallic compounds comprising a first LA of Formula I or Formula II which is coordinated to one metal atom selected from the group consisting of Os, Ir, Pd, Pt, Cu, Ag, and Au. 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 compounds of Formula I that are useful as emitters in OLEDs.

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

Abstract: Provided are compounds comprising two cyclic moieties A and B which are each independently a monocyclic or fused polycyclic ring system comprised of one or more 5-membered or 6-membered carbocyclic or heterocyclic rings and which are linked together via at least two separate linkers. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these compounds.

Abstract: A compound of Formula I: wherein ring A is a 5-membered or 6-membered aromatic ring; wherein RA, RB, and RC each independently represent mono to the maximum allowable substitution, or no substitution; wherein Y1 is absent or present, and when present is selected from the group consisting of a direct bond, O, S, Se, CRR?, NR, SiRR?, and BR; wherein each X1-X3 is N or CR; wherein at least one of X1-X3 is N; wherein each A1-A5 is independently C or N; wherein the maximum number of N atoms that can connect to each other within each ring is two; wherein each R1, R2, R3, and R4 is independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof; wherein each R, R?, RA, RB, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroa

Abstract: Complexes and devices, such as organic light emitting devices and full color displays, including a compound of the formula: wherein: M is Pd2+, Ir+, Rh+, or Au3+; each of V1, V2, V3, and V4 is coordinated to M and is independently N, C, P, B, or Si; each of L1, L2, L3, and L4 is independently a substituted or unsubstituted aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, carbene, or N-heterocyclic carbene; and Z is O, S, NR, CR2, SiR2, BR, PR, ?where each R is independently substituted or unsubstituted C1-C4 alkyl or substituted or unsubstituted aryl.

Abstract: Provided are compounds comprising a Si or Ge atom to which three monocyclic or fused polycyclic ring systems comprised of one or more 5-membered or 6-membered rings as well as one selected from the group consisting of B, BR, Al, Ga, N, P, As, Sb, Bi, P?X?, As?X?, Sb?X?, and Bi?X? are attached. Also provided are formulations comprising these compounds. Further provided are organic light emitting diodes (OLEDs) and related consumer products that utilize these compounds.

Abstract: A compound having a structure of Formula I, and a structure of Formula II, fused directly to one of moiety A, B, C, or D is provided. In Formulae I and II, each of moieties A, B, C, and D is a monocyclic ring or a polycyclic fused ring system; one of Z1, Z2, and Z3 is N and the other two are C; each of L1, L2, and L3 is a direct bond or a linker, K1 is a direct bond, O, or S; M is Pt or Pd; each of X1 to X6 is C or N; each of Q1, Q2, and Q3 is CRQ or CRQRQ?; n is 1 to 5; and each R, R?, R?, R?, RA, RB, RC, RD, RF, RQ, and RQ? is hydrogen or a General Substituent. Formulations, OLEDs, and consumer products containing the compound are also provided.