Abstract: An ink composition for an organic light-emitting device, the ink composition including a luminescent host material and a solvent, wherein the luminescent host material includes at least one compound represented by Formula (1) and Formula (3), and wherein the solvent includes at least one selected from an aromatic ether, an aromatic ester, and an aromatic ketone: wherein, in Formulas (1) and (3), groups and variables are the same as described in the specification.

Abstract: An ink composition that contains light-emitting nanocrystalline particles, a photopolymerizable component containing at least one photopolymerizable compound and having a Hansen solubility parameter ?p of 3.0 MPa0.5 or more, and a phosphite compound with a partial structure represented by the following formula (1). [In the formula (1), X1 to X3 independently denote an oxygen atom or a sulfur atom, R1 denotes an alkyl group, and * denotes a bonding arm.

Abstract: There are provided particles in which a dispersant can be easily removed from semiconductor nanocrystals, an ink with good storage stability, and a light-emitting device with a long emission lifetime. Particles according to the present invention contain light-emitting semiconductor nanocrystals and a dispersant supported on the semiconductor nanocrystals and having a boiling point of 300° C. or less at atmospheric pressure. An ink according to the present invention contains particles according to the present invention and a dispersion medium having a boiling point equal to or higher than the boiling point of the dispersant at atmospheric pressure and containing a polar compound with a polar group.

Abstract: An ink composition for an organic light-emitting device, the ink composition including a luminescent host material and a solvent, wherein the luminescent host material includes at least one compound represented by Formula (1) and Formula (3), and wherein the solvent includes at least one selected from an aromatic ether, an aromatic ester, and an aromatic ketone: wherein, in Formulas (1) and (3), groups and variables are the same as described in the specification.

Abstract: An object of the present invention is to provide a novel hetero ring-containing siloxane polymer, a composition and an electronic material composition containing the polymer, and an electronic element, which do not cause a decrease in luminous efficiency and driving stability of an electronic element, by adding the polymer to an electronic material composition or ink to be used for coating film formation. It has been found that the electronic element produced from the novel hetero ring-containing siloxane polymer, the composition and the electronic material composition containing the polymer exhibit improved luminous efficiency and driving stability, thereby completing the present invention.

Abstract: A leveling agent is oriented in the surface part of a layer formed from a coated film having the oriented leveling agent on its surface. The purpose of the present invention is to provide an ink composition for organic semiconductor device that can form a satisfactory film even on a low surface energy layer. The ink composition for organic semiconductor device contains a first organic semiconductor device material, a leveling agent, a first solvent, and an aromatic solvent. The leveling agent is a polymer at least containing a siloxane monomer as a monomer unit, and the first solvent has a surface tension of 25 mN/m or less.

Abstract: An object of the present invention is to provide a polymer obtained from novel monomers, a composition containing the polymer, an electronic material composition, and an electronic element, the polymer, by being added to the electronic material composition or ink applied for coating film formation, improving the smoothness (leveling property) of a coating film to be obtained without deteriorating a driving stability of the electronic element. With the novel siloxane monomers, the polymer thereof, the composition containing the polymer, and the electronic material composition according to the present invention, it is possible to produce a smooth organic thin film. The electronic element including either of these compositions has a prolonged element lifetime and improved driving stability.

Abstract: There is provided an ink composition for an organic light-emitting device which can easily form a light-emitting layer having more excellent uniformity and which is suitable for forming a light-emitting layer by a wet method. The ink composition includes a light-emitting material, a binder resin, and a solvent, the binder resin containing a multi-branched copolymer of a monovinyl compound composed of a styrene-based monomer as an essential component with a multifunctional vinyl compound containing two or more ethylenically unsaturated double bonds, and the copolymer having a weight-average absolute molecular weight within a range of 200,000 to 800,000 determined by gel permeation chromatography using a multi-angle laser light scattering detector and a degree of branching within a range of 0.20 to 0.55 determined from an inertial radius. An organic light-emitting device includes a positive electrode; a light-emitting layer, and a negative electrode, the light-emitting layer containing the binder resin.

Abstract: An ink composition for an organic light-emitting device, the ink composition including a luminescent host material and a solvent, wherein the luminescent host material includes at least one compound represented by Formula (1), and wherein the solvent includes at least one selected from an aromatic ether, an aromatic ester, and an aromatic ketone: wherein, in Formula (1), groups and variables are the same as described in the specification.

Abstract: From a viewpoint of achieving a high-performance organic light-emitting element, ensuring a certain degree of flatness in a coating film obtained by a wet film forming method may not be sufficient. As a result, a desired performance of an organic light-emitting element to be obtained, may not be obtained. Therefore, an object of the present invention is to provide an ink composition for an organic light-emitting element, which can prevent the generation of waviness. There is provided an ink composition for an organic light-emitting element, including: an organic light-emitting element material; a leveling agent; and a solvent, in which the leveling agent is a block copolymer formed by performing copolymerization of at least a siloxane monomer and a hydrophobic monomer.

Abstract: The present invention is to provide the following: a material for hole injection transport layers and a production method thereof, the material capable of forming a hole injection transport layer by the solution application method and increasing device lifetime; an ink for forming hole injection transport layers and a production method thereof, the ink capable of forming a hole injection transport layer by the solution application method and increasing device lifetime; and a long-life device and a production method thereof; wherein disclosed is a material for hole injection transport layers, which is a reaction product of a molybdenum complex with a compound represented by the following chemical formula (i): wherein R1, R2, X1 and X2 are as explained in the Description.

Abstract: A main object of the present invention is to provide an organic EL element including an electron injection and transport layer containing an organic boron compound, which has excellent characteristics such as efficiency and service life. The present invention achieves the object mentioned above by providing an organic EL element including: an anode; a light emitting layer formed on the anode; an electron injection and transport layer that is formed on the light emitting layer, contains an organic boron compound, and has a crystalline structure; and a cathode formed on the electron injection and transport layer.

Abstract: The present invention is to provide the following: a material for hole injection transport layers and a production method thereof, the material capable of forming a hole injection transport layer by the solution application method and increasing device lifetime; an ink for forming hole injection transport layers and a production method thereof, the ink capable of forming a hole injection transport layer by the solution application method and increasing device lifetime; and a long-life device and a production method thereof. Disclosed is a material for hole injection transport layers, which is a reaction product of a molybdenum complex with a compound represented by the following chemical formula (1): wherein R1, R2, X1 and X2 are as explained in the Description.

Abstract: A main object of the present invention is to provide an organic EL element including an electron injection and transport layer containing an organic boron compound, which has excellent characteristics such as efficiency and service life. The present invention achieves the object mentioned above by providing an organic EL element including: an anode; a light emitting layer formed on the anode; an electron injection and transport layer that is formed on the light emitting layer, contains an organic boron compound, and has a crystalline structure; and a cathode formed on the electron injection and transport layer.

Abstract: The manufacturing method of high-manganese spheroidal graphite cast iron with exhibiting low magnetism, and excellent wear resistance, castability, and machinability, and having a composition which consists of, 2.5 to 4.0 wt. % of C content, 1.5 to 6.0 wt. % of Si content, 7.0 to 18.0 wt. % of Mn content, and 0.015 to 0.1 wt. % of Mg content, and when the Mn content falls within the range of 7.0 to 10.0 wt. %, consists of 10.0 wt. % or smaller of Ni content, or when the Mn content falls within the range of 10.0 to 18.0 wt. %, consists of Ni content being in the range satisfies the following formula: [Mn wt. %>Ni wt. %], the method comprises heating the above cast iron to the temperature of 1073 to 1373K to decompose the carbides, and then quenching from 1073 to 1273K the resulting cast iron to form a metastable austenite matrix structure that contains no carbide or a reduced amount of carbides.

Abstract: When the density (DO) of the inclusions whose major axis exceeds 5 ?m observed in the axis position of a section perpendicular to the axial direction of a forged product is made 70 nos/cm2 or below and the radius of the forged product is made R, the ratio of the density (DR) of the inclusions whose major axis exceeds 5 ?m observed in the R/3 position from the axis position toward the radial direction and the density DO satisfies an inequality (1) below. 0.5?DR/DO?1.

Abstract: The manufacturing method of high-manganese spheroidal graphite cast iron with exhibiting low magnetism, and excellent wear resistance, castability, and machinability, and having a composition which consists of, 2.5 to 4.0 wt. % of C content, 1.5 to 6.0 wt. % of Si content, 7.0 to 18.0 wt. % of Mn content, and 0.015 to 0.1 wt. % of Mg content, and when the Mn content falls within the range of 7.0 to 10.0 wt. %, consists of 10.0 wt. % or smaller of Ni content, or when the Mn content falls within the range of 10.0 to 18.0 wt. %, consists of Ni content being in the range satisfies the following formula: [Mn wt. %>Ni wt. %], the method comprises heating the above cast iron to the temperature of 1073 to 1373K to decompose the carbides, and then quenching from 1073 to 1273K the resulting cast iron to form a metastable austenite matrix structure that contains no carbide or a reduced amount of carbides.

Abstract: When the density (DO) of the inclusions whose major axis exceeds 5 ?m observed in the axis position of a section perpendicular to the axial direction of a forged product is made 70 nos/cm2 or below and the radius of the forged product is made R, the ratio of the density (DR) of the inclusions whose major axis exceeds 5 ?m observed in the R/3 position from the axis position toward the radial direction and the density DO satisfies an inequality (1) below. 0.5?DR/DO?1.