Abstract: The present invention includes organic compounds with two substituted triazine, pyridine, pyrimidine or pyrazine rings attached to an aromatic or heteroaromatic ring system. The compounds are expected to improve OLED performance.

Abstract: Novel host compounds consisting of carbazole and nitrile groups are disclosed. These compounds are useful in phosphorescent OLEDs.

Abstract: A composition including a first compound capable of functioning as a phosphorescent emitter in an OLED is provided. The first compound has at least one aromatic ring and at least one substituent R directly bonded to one of the at least one aromatic rings. Each substituent R has the formula of where (a) G1 is selected from NR1, SiR1R2, GeR1R2, alkyl, cycloalkyl, and combinations thereof; and G2 is a non-aromatic polycyclic group; (b) G1 is a direct bond; and G2 is a non-aromatic spiro polycyclic group; or (c) G1 is selected from direct bond, NR1, SiR1R2, GeR1R2, alkyl, cycloalkyl, and combinations thereof; G2 is a non-aromatic polycyclic group; and R is directly bonded to a phenyl, pyridine, or triazine. R1, R2, and R3 are a variety of substituents. Formulations and devices, such as an OLEDs, that include the first compound are also described.

Abstract: This invention discloses novel compounds containing a bitriazine building block. These compounds can be used as host materials or electron transporting materials for organic light-emitting devices.

Abstract: A premixed co-evaporation source that is a mixture of a first compound and a second compound is disclosed. The co-evaporation source is for vacuum deposition process. The first compound has a different chemical structure than the second compound. The first compound and the second compound are both organic compounds. At least one of the first compound and the second compound contains at least one less abundant stable isotope atom. At least one of the first compound and the second compound is a fluorescent or delayed fluorescent emitter. The first compound has an evaporation temperature T1 of 100 to 400° C.; the second compound has an evaporation temperature T2 of 100 to 400° C.; the absolute value of T1?T2 is less than 20° C.

Abstract: The present invention includes organic compounds with two substituted triazine, pyridine, pyrimidine or pyrazine rings attached to an aromatic or heteroaromatic ring system. The compounds are expected to improve OLED performance.

Abstract: Novel host compounds consisting of carbazole and nitrile groups are disclosed. These compounds are useful in phosphorescent OLEDs.

Abstract: A composition of materials including a first compound having a structure according to Formula I

Abstract: A composition formed of a mixture of a first compound and a second compound wherein the first compound has a different chemical structure than the second compound. The first compound and the second compound are both organic compounds. At least one of the first compound and the second compound contains at least one less abundant stable isotope atom. The first compound has an evaporation temperature T1 and the second compound has an evaporation temperature T2 where both T1 and T2 are between 100 to 400 ° C. and the absolute value of T1-T2 is less than 20 ° C. The first compound has a concentration C1 in said mixture and a concentration C2 in a film formed by evaporating said mixture in a high vacuum deposition tool with a chamber base pressure between 1×10?6 Torr to 1×10?9 Torr, at a 2?/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated; and wherein absolute value of (C1-C2)/C1 is less than 5%.

Abstract: A composition including a first compound capable of functioning as a phosphorescent emitter in an OLED is provided. The first compound has at least one aromatic ring and at least one substituent R directly bonded to one of the at least one aromatic rings. Each substituent R has the formula of where (a) G1 is selected from NR1, SiR1R2, GeR1R2, alkyl, cycloalkyl, and combinations thereof; and G2 is a non-aromatic polycyclic group; (b) G1 is a direct bond; and G2 is a non-aromatic spiro polycyclic group; or (c) G1 is selected from direct bond, NR1, SiR1R2, GeR1R2, alkyl, cycloalkyl, and combinations thereof; G2 is a non-aromatic polycyclic group; and R is directly bonded to a phenyl, pyridine, or triazine. R1, R2, and R3 are a variety of substituents. Formulations and devices, such as an OLEDs, that include the first compound are also described.

Abstract: Novel compounds containing quinazoline are disclosed in this application. In these compounds, the quianzoline moiety is combined with additional aromatic groups such as dibenzothiophene, triphenylene and carbazole to provide superior properties for OLED.

Abstract: A composition comprising a first compound and a second compound is described. The composition can be a mixture of a first compound having a structure according to Formula I, and a second compound having a structure according to Formula II, The composition can also be a mixture of a first compound having a structure according to Formula III, and a second compound having a structure according to Formula IV, Devices, such as OLEDs, that include the compositions for Formulas I & II or Formulas III & IV, as well as, methods of making the same are also described.

Abstract: A compound that includes a ligand L, having the formula, is provided. In the structure of Formula I, each R1, R2, R3, R4, R4, R5, R6, R7, and R8 is independently selected from a variety of substituents; any adjacent substituents are optionally joined or fused into a ring; at least one of R3, R4, and R5 is not hydrogen; “a” is an integer from 0 to 10; (i) when a is 0, at least one of R7, R8, and an R2 adjacent to ring B, is not hydrogen, and (ii) when a is 1 to 10, at least one of an R2 adjacent to ring A and an R6 adjacent to ring C is not hydrogen; ligand L is coordinated to a metal M having an atomic weight greater than 40; and ligand L is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.

Abstract: A compound having the structure of Formula I, A-L-B-M-D, is disclosed. In the structure of Formula I: A is selected from L is a linker selected from a single bond, an aryl group, a heteroaryl group, and combinations thereof, and may be further substituted; L-B-M has the structure: M is selected from an aryl group, a heteroaryl group, and combinations thereof, and may be further substituted; D has the structure: X is O, S, Se, or CR?R?; X1-X8, Y1-Y12, Z1, Z3-Z8, and Z11-Z18 are each independently N or CR; each R, R?, and R? are selected from a wide variety of substituents; where adjacent R substituents can form a fused ring; and R? and R? can form a ring. Formulations and devices, such as an OLEDs, that include the compound of Formula I are also described.

Abstract: Bis-Indole compounds are disclosed and used as hosts to improve the organic electroluminescent devices (OLEDs) performance.

Abstract: A novel compounds useful as hosts for phosphorescent emitters in OLEDs is disclosed.

Abstract: A compound containing five member ring fused B—N heterocycles is useful as host materials in OLEDs.

Abstract: Compounds containing indolocarbazole and terphenyl building blocks are disclosed in this application. These compounds are useful for application in organic electroluminescent devices.

Abstract: A compound having the formula [LA]3-nIr[LB]n is disclosed. In the formula, LA is and LB is Formula I.

Abstract: A compound having the formula: Formula I is disclosed. The compound is useful as emitters in OLEDs.