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: An organic light emitting device (OLED) comprising, sequentially an anode; a hole transporting layer; an emissive region; an electron transporting layer; and a cathode is provided. In the OLED, the emissive region comprises a compound S1 and a compound A1, where 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; the compound A1 has an emission onset greater than 750 nm; and the PLQY of the emissive region comprising both compound S1 and compound A1 is greater than the PLQY of an equivalent emissive region without compound A1. Consumer products containing the OLED are also provided.

Abstract: A compound E1 capable of functioning as an emitter an organic light emitting device (OLED) at room temperature is provided. The compound is a metal coordination complex; the metal coordination complex comprises a first ligand, LA, that comprises a first group; and the metal coordination complex comprises a covalent bond between the metal and the first group; wherein the transition dipole moment (TDM) of the emissive state of the complex has a vector, wherein an angle formed between the TDM vector and the covalent bond between the metal and the first group is less than or equal to 40°, and wherein an excited state of the metal coordination complex has a LC character localized on the first group of greater than or equal to 45%. 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 moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; each of X1 to X4 is C, N, or B; Z1 and Z2 are C or N; Y is a one-atom long linker; K1 and K2 are a direct bond or a one-atom long linker, where one of K1 and K2 is a linker; each R, R?, R?, R?, RA and RB is a hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M having an atomic mass of at least 40. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds as both sensitizer and as acceptor. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided is a composition A that includes: a first dopant; and a first host; where the first dopant has a HOMO energy HOMODopant and a LUMO energy LUMODopant; the first host has a HOMO energy HOMOHost and a LUMO energy LUMOHost; |LUMOHost?HOMODopant|=X1; |LUMODopant?HOMOHost|=X2; the first dopant has an optical bandgap energy, Y; at least one of X1 and X2 is less than or equal to Y+0.026 eV; the composition A has a vertical dipole ratio VDR(A); composition B is a reference composition comprising the first dopant and a second host, wherein the second host is the composition B having a vertical dipole ratio VDR(B); the ratio of the first dopant and the first host in the composition A is identical to the ratio of the first dopant and second host in the composition B; and VDR(A)?VDR(B) is ?0.05.

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 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: A compound having the following formula is disclosed. The compound is useful as an emitter in OLED applications.

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 organometallic compounds comprising a carbazole group as the central moiety to which at least two further groups selected from carbazole and benzo[d]benzo[4,5]imidazo[1,2-a]imidazole are attached. 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 compounds having a structure of that are useful as emitters in OLEDs.

Abstract: Provided are organometallic compounds comprising a chelating tetradentate ligand with at least four cyclic structures located around a central Pt or Pd atom that can be used as light-emitters. 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: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, rings A and B are 5- or 6-membered ring; K1 and K2 are each independently selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); Z1, Z2, X1 and X2 are C or N; Y1*, Y2*, Y1*, Y4*, and Y5* are selected from a variety of moieties; n is 0 or 1; Y5* is bonded directly to X2 when n is 0; each Ra, R?, R, R?, R1, R2, RA, and RB is hydrogen or a substituent; each independently represents a single bond or double bond in a Lewis structure; and LA is coordinated to a metal M, which may be coordinated to other ligands Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are novel compounds having a structure of that are useful as emitters in OLEDs.

Abstract: In one aspect, provided is a compound of Formula I, In Formula I, M is Pt or Pd; L has the structure F1 is or a direct bond; rings A, B, C, D, and F are independently monocyclic rings or multicyclic fused ring systems; each of X1 to X10 is independently C or N; each of Z1 to Z4 is C or N; each of L1 to L5 is a direct bond or an organic linker, each of a, b, c, and d is 0 or 1; each K1 to K4 is a direct bond, O, or S; each of Z1 to Z4 that is connected to O or S is C; and each RA, RB, RC, RD, RE, and RX is independently hydrogen or a substituent.

Abstract: A compound having the following formula is disclosed. The compound is useful as an emitter in OLED applications.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, rings A and B are 5- or 6-membered ring; K1 and K2 are each independently selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?); Z1, Z2, X1 and X2 are C or N; Y1*, Y2*, Y3*, Y4*, and Y5* are selected from a variety of moieties; n is 0 or 1; Y5* is bonded directly to X2 when n is 0; each R?, R?, R, R?, R1, R2, RA, and RB is hydrogen or a substituent; each independently represents a single bond or double bond in a Lewis structure; and LA is coordinated to a metal M, which may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound of Formula I: wherein each R1, R2, R3, and R4 is independently hydrogen or a substituent selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, carbonyl, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, boryl, and combinations thereof; and wherein any two adjacent substituents are optionally joined or fused together to form a ring.

Abstract: Provided are organometallic compounds comprising an at least two-dentate ligand comprising at least one 5-membered or 6-membered carbocyclic or heterocyclic ring. Further provided are organometallic compounds containing a platinum atom as the central metal atom. Also described are their various uses including as emitters in devices such as organic light emitting diodes and related electronic devices. Also provided are formulations comprising these organometallic compounds containing a platinum atom as the central metal atom. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.