Abstract: The present disclosure relates to compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: Provided is an organic EL device having high efficiency and high driving stability while being driven at a low voltage. The organic electroluminescent device includes one or more light-emitting layers between an anode and a cathode opposite to each other. At least one of the light-emitting layers contains a host material and a light-emitting dopant, and (i) a first host formed of an indolocarbazole compound having one or two indolocarbazole rings, and (ii) a second host formed of a carbazole compound having a plurality of carbazole rings and having a bond structure represented by the following general formula (3) are used as the host material.

Abstract: A structure for manufacturing castings, containing an inorganic fiber, a layered clay mineral, and an inorganic particle other than the layered clay mineral and having an organic content of 5 mass % or lower or having a mass loss of 5 mass % or lower when heated at 1000° C. for 30 minutes. The inorganic particle preferably contains one or more selected from obsidian, graphite, and mullite. The inorganic fiber preferably contains carbon fiber. The inorganic fiber preferably has an average length of 0.5 to 15 mm. The layered clay mineral preferably contains one or more selected from bentonite and montmorillonite.

Abstract: An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, wherein the emission layer includes a host and a dopant, and wherein the organic light-emitting device satisfies predetermined conditions described in the specification.

Abstract: An aqueous ink composition for inkjet printing on non-porous substrates and a method for forming the same are disclosed. For example, the method includes preparing a primary polymer latex with an aromatic functional group, a hydrogen-bonding group, a flexible side-chain, and an ionic functional group and mixing the primary polymer latex with a secondary latex binder and one or more co-solvents.

Abstract: The present invention relates to iridium complexes suitable for use in organic electroluminescent devices, especially as emitters.

Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode and a plurality of organic layers disposed between the first electrode and the second electrode, in which at least one of the organic layers includes a polycyclic compound including a plurality of electron donors and an electron acceptor connecting the electron donors, at least one of the electron donors is a condensed ring including a borepine core, and the electron acceptor includes a phenyl group including, as a substituent, at least one cyano group or a heterocycle including at least one nitrogen atom, or a heteroaryl group including an oxygen atom or a sulfur atom for forming a ring, thereby achieving improved emission efficiency.

Abstract: Disclosed is a method of preparing a rubber composition comprising the steps of (a) blending in at least one preparatory mixing step at least one natural or synthetic rubbery polymer, a silica filler, a silica coupling agent, and at least one vulcanization accelerator; and (b) subsequently blending therewith in a final mixing step a sulfur curative, wherein the average glass transition temperature of the polymer(s) is ?55° C. or less.

Abstract: A compound of Formula 1, as disclosed herein, is useful in an organic light emitting device and apparatuses including the same.

Abstract: Rubber components of a tire comprising a diene elastomer and at least 1 phr of reduced graphene oxide nanoparticles having a specific surface area of at least 700 m2/g, an oxygen content of no more than 6 at %, and a ratio of non-aromaticity to aromaticity ID/IG of at least 0.7 as determined by Raman spectroscopy. Methods of preparing such rubber compositions in an internal mixer for achieving good distribution and dispersion are also included.

Abstract: A compound including a first ligand LA having a structure of Formula I is disclosed. The compound is useful a an emitter dopants in OLEDs for enhancing the OLED performance.

Abstract: Organic metal compounds and organic light-emitting devices employing the same are provided. The organic metal compound has a chemical structure of Formula (I) or Formula (II): In particular, one of the following two conditions (1) and (2) is met: (1) R1 is deuterium or C1-6 deuterated alkyl group, when R3 and R4 are independently hydrogen, halogen, C1-6 alkyl group, C1-6 fluoroalkyl or C3-12 heteroaryl group; and (2) R1 is hydrogen, deuterium, C1-6 alkyl group, C1-6 deuterated alkyl group, C3-12 heteroaryl group, or C6-12 aryl group, when at least one of R3 and R4 is C6-12 aryl group or C6-12 fluoroaryl group.

Abstract: Irridium complexes with molecular formula of L3Ir, together with application thereof and organic electroluminescent devices, wherein Ir is the central metal atom and L is a ligand. The structure of these complexes is of the following formula (I): Ar is selected from substituted or unsubstituted aryl groups with 6 to 30 carbon atoms, and substituted or unsubstituted heterocyclic aryl groups with 4 to 30 carbon atoms. R1 to R7 are each independently selected from atoms or groups described herein. The substituent group on above-mentioned Ar or R1 to R7 is independently selected from F, Cl, Br, I, CHO, CN, substituted or unsubstituted alkyl or cycloalkyl groups with 1 to 30 carbon atoms, fluoroalkyl groups, alkoxy groups, and thioalkoxy groups.

Abstract: The present disclosure relates to the field of OLED technologies and provides a compound having TADF property. In an embodiment, the compound has a structure represented by Formula (1), in which L1 and L2 are each a hydrogen atom, phenyl, naphthyl, anthracyl, pyridyl, pyrimidinyl, and pyrazinyl; R1 and R2 are each aryl or and heteroaryl, such as a carbazole-derived group, an acridine-derived group, diarylamino, a diarylamine-derived group, and the like. In the present disclosure, the double boron heterocyclic structure functions not only as an electron acceptor but also as a linker. In the compound according to the present disclosure, by attaching a group having a large steric hindrance to the boron atom of the boron heterocyclic ring, the molecules the compound are prevented from aggregating, and thus a ?-aggregation or excimer formed by direct accumulation of the conjugate plane is avoided, thereby improving the light-emitting efficiency.

Abstract: A novel compound having a first ligand LA of is disclosed. The compound is useful as emitter dopant in OLEDs.

Abstract: A compound of Formula I wherein L is a bidentate ligand coordinated to a metal M; each ring K is the same, and represents a 5-membered or 6-membered heteroaryl ring and with ring J forms a 5-member cyclometallated ring; A1 and A1? are the same and selected from CR1 or N; A2 and A2? are the same and selected from CR2 or N; A3 and A3? are the same and selected from CR3 or N; each R4 with its corresponding ring position R4? are the same, and R1 to R5 are as defined in the specification. An OLED with an organic layer that includes a compound of Formula I and a consumer product that includes the OLED. A method of making a compound of Formula I is also described.

Abstract: An organic electroluminescence device includes a first electrode; a second electrode on the first electrode; and a plurality of organic layers between the first electrode and the second electrode, where a polycyclic compound represented by Formula 1-1 or Formula 1-2 is included in at least one organic layer of the plurality of organic layers. The polycyclic compound is represented by Formula 1-1 or Formula 1-2.

Abstract: A compound having a first ligand LA of Formula I, is disclosed. In the structure of Formula I, Z1 through Z7 are each independently C or N; ring B is a 5-membered or 6-membered ring; each RA, RB, and RC is independently hydrogen or one of a variety of substituents; any two substituents in RC may be joined or fused together to form a ring. In the compound, LA is complexed to a metal M, which is optionally coordinated to other ligands. In addition, ligand LA is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.

Abstract: A neutral compound including a first ligand LA represented by Formula I or Formula II is disclosed.

Abstract: Provided are a color conversion composition which contains at least one kind of compound represented by a specific general formula, a compound which is used in the color conversion composition and represented by a specific general formula, and a light emitting device which has a color conversion portion consisting of the color conversion composition and a light source.