Abstract: Provided are macrocyclic compounds comprising at least one eight-membered ring and at least four further 5-membered or 6-membered carbocyclic and heterocyclic rings which may be further substituted. Also provided are formulations comprising these macrocyclic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these macrocyclic compounds.

Abstract: Provided are organometallic compounds comprising as the central metal atom either platinum or palladium which is coordinated by a tetradentate ligand which comprises at least three monocyclic or fused polycyclic ring systems comprising one or more 5-membered or 6-membered carbocyclic or heterocyclic rings. 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 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: In some embodiments, compound comprising a first ligand LA having a structure of Formula I, is provided. In Formula I, each of moiety A and moiety C is a monocyclic ring or a polycyclic fused ring system; T is Si or Ge; R1 and one RA substituent are joined to form a ring A?; each R1, RA, and RC is a hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M selected from Ir, Rh, Re, Ru, Os, Pt, Pd, Ag, Au, and Cu. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds wherein a boron containing group bridges two monocyclic or fused polycyclic ring systems each independently comprised of one or more 5-membered or 6-membered rings. 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 R1R2R3M-L-M?; wherein M is Si or Ge; L is selected from the group consisting of a direct bond, or selected from the group consisting of O, S, Se, BR, BRR?, PR, CR, NR, C?O, C?S, C?NR, C?CRR?, CRR?, SO, SO2, SiRR?, GeRR?, and P(O)R; when L is a direct bond, M? is SiR4R5R6 or GeR4R5R6; and when L is not a direct bond, M? is SiR4R5R6, GeR4R5R6, or one or more hydrocarbon groups provided that at least one of the one or more hydrocarbon groups is a carbocyclic group. 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 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, moiety A is a heterocyclic fused ring system comprising a 5-membered ring fused to a 6-membered ring; moiety B is an aromatic ring or fused ring system; each RA and RB is independently a hydrogen or a General Substituent; K is a direct bond, O, or S; at least one of RA and RB comprises a substituent R comprising a silyl group or a germyl group; ligand LA is coordinated to a metal M, which has an atomic mass of at least 40; and metal M may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: Provided are compounds which comprise at least a first structure comprising five rings which are fused together and contain one of the group consisting of B, Al, Ga, PO, and N as the central atom/group, and a second structure comprising a 5-membered nitrogen-containing ring to which two 6-membered rings are fused. 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 print material includes a vinylic molecule, a vinylic cross-linker molecule having a plurality of vinyl groups, a quantum dot, a light-scattering particle having a surface composition, and a dispersant having a chemical affinity matched to the surface composition. Methods of making and using such print materials are also described.

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 formula M(LA)x(LB)y(LC)z, where each of LA, LB, and LC is a different bidentate ligand is provided. In formula M(LA)x(LB)y(LC)z, x+y+z is equal to the valence of the metal M, the first ligand LA has a structure of Formula I, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1 to X4 and Z1 and Z2 is C or N; each of K1, K2, and L1 is a direct bond of a linker; L1 is a direct bond or an organic linker; each R substituent is hydrogen or a General Substituent defined herein; and at least one RA or RB comprises a ring D that is an electron-deficient heterocyclic ring comprising one or two ring carbon atoms. Formulations, OLEDs, and consumer products containing such compounds are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety A and moiety B either a monocyclic ring or a polycyclic fused ring system; each of X1 to X4, Z1, and Z2 is C or N; K1 is a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), or Si(R?)(R?); L1 is a direct bond or a linking group; each R?, R?, RA and RB is hydrogen or a General Substituent; and LA is coordinated to a metal M. In addition, RA or RB alone or in combination with a substituent of L1 form a 7-membered ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds of Formula R1R2R3M-L-M?; wherein M is Si or Ge; L is selected from the group consisting of a direct bond, or selected from the group consisting of O, S, Se, BR, BRR?, PR, CR, NR, C?O, C?S, C?NR, C?CRR?, CRR?, SO, SO2, SiRR?, GeRR?, and P(O)R; when L is a direct bond, M? is SiR4R5R6 or GeR4R5R6; and when L is not a direct bond, M? is SiR4R5R6, GeR4R5R6, or one or more hydrocarbon groups provided that at least one of the one or more hydrocarbon groups is a carbocyclic group. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these compounds.

Abstract: Provided are compounds comprising as a central moiety a 6-membered aromatic ring which is fused to a 5-membered heterocyclic ring comprising at least two nitrogen atoms. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these compounds.

Abstract: An OLED is disclosed where the OLED includes, sequentially: an anode; a hole transporting layer; an emissive region; an electron transporting layer; and a cathode; where the emissive region includes a compound S1; and a compound A1. The compound S1 is an organometallic sensitizer that transfers energy to the compound A1, and the compound A1 is an acceptor that is an emitter in the emissive region. The compound S1 has a vertical dipole ratio (VDR) value greater than or equal to 0.2; and the compound A1 has a VDR value less than or equal to 0.2.

Abstract: Provided is a full-color pixel arrangement of a device comprising at least one pixel: wherein the at least one pixel comprises: a first subpixel comprising a first OLED comprising a first emissive region; a second subpixel comprising a second OLED comprising a second emissive region; wherein the first emissive region comprises: a compound S1; a compound A1; and a compound H1; wherein the second emissive region comprises: a compound A2; and a compound H2; wherein the compound S1 is a sensitizer that transfers energy to the compound A1; wherein the compound A1 is an acceptor that is an emitter; wherein the compound H1 is a host, and at least one of the compounds S1 and A1 is doped with the compound H1; wherein the compound A2 is an emitter; wherein the compound H2 is a host, and the compound A2 is doped with the compound H2.

Abstract: Disclosed is an OLED that includes: an anode; a cathode; and an emissive region disposed between the anode and the cathode; where the emissive region includes: a compound S1; a compound A1; and a compound D1; where the compound S1 is an organic or organometallic sensitizer that transfers energy to the compound A1; the compound A1 is an acceptor that is an emitter; and the compound D1 is a metal complex.

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: Provided are organometallic compounds comprising iridium as a central metal atom which is coordinated by two three-dentate ligands which each comprise at least three 5-membered or 6-membered rings. 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.