Abstract: The present invention includes novel polycyclic alkyl amino carbenes as ligands for metal complexes. These compounds may be useful as emitter materials for phosphorescent electroluminescent devices.

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

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

Abstract: A compound of Formula I, is provided. In Formula I, one of Z1, Z2, and Z3 is N and the remainder are C; each of L1 and L2 is independently selected from a direct bond and a linking group; at least one of R1, R2, RA, RB, RC, RD, and RE comprises a group R* having a structure selected form the group consisting of Formula II, -Q(R3)(R4)a(R5)b, Formula III, and Formula IV, Each R, R?, R?, R1, R2, R3, R4, R5, RA, RB, RC, RD, RE, RF, RG, and RH is independently hydrogen or a General Substituent, with the proviso that group R* is not adamantyl. 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: Provided are organometallic compounds that include a ligand LA of that are useful as emitters in OLEDs. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided are organometallic compounds comprising a first ligand LA which may be a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and which forms at least one 5-membered ring with a metal atom. 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 comprising a ligand LA of Formula I

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: 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: The present invention includes novel heterocyclic materials for use as blue phosphorescent materials in OLED devices. The materials are based on carbene and heterocyclic 5-membered ring linked ligands, which may be complexed to a transition metal via a metal-carbon (carbene) bond and a metal-nitrogen covalent bond.

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

Abstract: This invention relates to the development of heterocyclic materials for use as blue phosphorescent materials in OLED devices. The materials are based on a pair of 5-membered aromatic or psuedoaromatic rings bonded to one another and complexed to a transition metal. The materials were determined computationally to have appropriate triplet energies for use as blue emitters and to possess sufficient chemical stability for use in devices.

Abstract: A compound comprising a first ligand LA comprising a structure of Formula I, is provided. In Formula I, moieties A, B, C, and D are each independently a monocyclic ring or a multicyclic fused ring system; each of X1 to X8 is C or N; each independently represents a single bond or a double bond; each of L1, L2, L3, and L4 is independently a direct bond or a linking group; each R, R?, R?, RA, RB, RC, and RD is a hydrogen or a General Substituent; any two adjacent R, R?, R?, RA, RB, RC, and RD may be joined or fused to form a ring; and LA is coordinated to a transition metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds comprising a 9-membered ring to which four 6-membered carbocyclic or heterocyclic aromatic rings as well as one further 5-membered or 6-membered heterocyclic ring are fused. 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: The present invention includes novel heterocyclic materials for use as blue phosphorescent materials in OLED devices. The materials are based on carbene and heterocyclic 5-membered ring linked ligands, which may be complexed to a transition metal via a metal-carbon (carbene) bond and a metal-nitrogen covalent bond.

Abstract: Provided are organometallic compounds that include a ligand LA of that are useful as emitters in OLEDs. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound of Formula I, is provided. In Formula I, rings A, B, and D are independently 5- or 6-membered rings; Z1-Z3 and X1-X5 are independently C or N; each of K1 and K2 are a direct bond, O, and S; Y1 is BR, NR1, O, S, Se, or CRR?; represents a single bond or no bond; when present, L1, L2, L3, and L4 are each independently a direct bond or a linker; each substituent is hydrogen or a general substituent and can be joined together to form a ring. Formulations, OLEDs, and consumer products containing the same are also provided.