Abstract: A nickel particle composition is shown, including: A) a nickel particle having an average particle size in the range of 0.5 ?m to 20 ?m obtained via a laser diffraction/scattering method and containing 50 wt % or more of a nickel element; B) a nickel fine particle having an average primary particle size in the range of 30 nm to 200 nm observed via a scanning electron microscope and containing 50 wt % or more of a nickel element; and C) an organic binder in the range of 0.1 wt % to 2.5 wt % relative to the total metal content; and the weight ratio of a component A to a component B (component A:component B) is in the range of 30:70 to 70:30.

Abstract: Provided are: a curable composition containing a compound having a polymerizable group, which allows the production of an organic electroluminescent element in which a plurality of organic layers are formed between both electrodes to be performed through a wet process; and an organic electroluminescent element improved in light emission performance, including a layer containing a cured product of the curable composition. Specifically, provided are: a curable composition containing an indolocarbazole compound having one polymerizable group such as a vinyl group or an epoxy group and having an indolocarbazole skeleton, and a compound having two polymerizable groups; and an organic electroluminescent element including a layer obtained by applying and curing the curable composition as a hole transport layer of the organic electroluminescent element.

Abstract: Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction. The organic electroluminescent device includes, between an anode and cathode laminated on a substrate, a plurality of organic layers. At least one layer of the organic layers contains a carbazole compound represented by the following general formula (1) having two to three structures in each of which a carbazole ring and a dibenzofuran or dibenzothiophene ring are bonded to each other at 1- and 4-positions. In the formula (1), A represents an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, n represents an integer of 2 or 3, and X represents oxygen or sulfur.

Abstract: Provided are a curable composition for an organic electroluminescent element, which has high light emission efficiency and is applicable to a wet process, a cured product thereof, and an organic electroluminescent element containing the cured product in an organic layer. More specifically, provided are a curable composition containing a compound represented by an indolocarbazole skeleton compound, a cured product obtained by curing the curable composition, and an organic electroluminescent element containing the cured product in an organic layer.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction. The device is an organic electroluminescent device having organic layers including a light-emitting layer between an anode and a cathode laminated on a substrate, in which a carborane compound is incorporated into at least one layer of the organic layers, or is incorporated as a host material into a light-emitting layer containing a phosphorescent light-emitting dopant and the host material. The carborane compound has a structure in which a N-containing fused aromatic ring is bonded to a carborane ring. The N-containing fused aromatic ring is a quinoline ring or has a structure obtained by substituting 1 to 3 ring-forming carbon atoms in a quinoline ring with N atoms.

Abstract: Provided are a nitrogen-containing aromatic compound useful for an organic electroluminescent device, and an organic electroluminescent device (organic EL device) that improves luminous efficiency of the device and sufficiently ensures driving stability of the device. The nitrogen-containing aromatic heterocyclic compound is represented by the following formula (1). The organic EL device includes an organic layer that contains the nitrogen-containing aromatic heterocyclic compound between an anode and a cathode laminated on a substrate. In the formula (1), a ring A represents an aromatic ring represented by the formula (1a) and fused with two adjacent rings, a ring B represents a heterocycle represented by the formula (1b) and fused with two adjacent rings, Y's each represent C—R or N, X's each represent N—Z, O, S, or Se, R represents hydrogen, an alkyl group, an aromatic group, or the like, and Z represents an alkyl group, an aromatic group, or the like.

Abstract: Disclosed are an organic electroluminescent device that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction, and a material for an organic electroluminescent device to be used in the device. The material is a material for an organic electroluminescent device formed of a carborane compound having an indolocarbazole skeleton and one or two or more carborane groups each bonded thereto directly or through a divalent group. In addition, the device is an organic electroluminescent device having organic layers including a light-emitting layer between an anode and a cathode laminated on a substrate, in which at least one layer of the organic layers contains the material for an organic electroluminescent device. In addition, the device is an organic electroluminescent device containing, as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant and the host material, the material for an organic electroluminescent device.

Abstract: Provided are a semiconductor material for an organic transistor having a high charge mobility, solvent solubility, oxidation stability, and satisfactory film formability, and an organic thin-film transistor using the semiconductor material. The organic semiconductor material for an organic transistor is a seven-ring-fused heterocyclic compound having benzene rings at both ends, and having, therebetween, rings of a structure in which benzene rings A and pyrrole rings B are fused in the order of A-B-A-B-A. The fused heterocyclic compound may be substituted with an alkyl group, an alkenyl group, an alkynyl group, or an aromatic group. In addition, the organic thin-film transistor includes a semiconductor layer using the compound.

Abstract: Provided are a supporting carbon material for a solid polymer fuel cell and a metal-catalyst-particle-supporting carbon material that, when used as a carrier for a solid polymer fuel cell catalyst, have excellent power generation performance in high-humidity conditions, which are conditions in which solid polymer fuel cells are operated. A supporting carbon material for a solid polymer fuel cell and a metal-catalyst-particle-supporting carbon material characterized in being a porous carbon material, the hydrogen content being 0.004-0.010% by mass, the nitrogen adsorption BET specific surface area being 600 m2/g-1500 m2/g, and the relative intensity ratio (ID/IG) between the peak intensity (ID) in the range of 1200-1400 cm?1 known as the D-band and the peak intensity (IG) in the range of 1500-1700 cm?1 known as the G-band, obtained from the Raman spectrum, being 1.0-2.0.

Abstract: Disclosed are an organic electroluminescent device (organic EL device) having improved luminous efficiency, sufficiently secured driving stability, and a simple construction, and a material for an organic EL device. The material for an organic EL device includes a carborane compound having a structure in which at least one carborane ring and at least one dibenzothiophene ring are present, and the at least one carborane ring is bonded to the at least one dibenzothiophene ring at position 1, 2, or 3. In addition, the organic EL device includes, between an anode and a cathode laminated on a substrate, at least one organic layer, in which the at least one organic layer includes the carborane compound.

Abstract: Provided is an organic electroluminescent device (organic EL device) which has improved luminous efficiency and a simple configuration, while ensuring sufficient driving stability. This organic electroluminescent device includes a light-emitting layer between an anode and a cathode that are laminated on a substrate. The light-emitting layer contains a phosphorescent light-emitting dopant, and a carbazole compound represented by the following formula (1) as a host material. In the formula (1), E represents oxygen or sulfur, and R1 to R6 each represent hydrogen, an alkyl group, a cycloalkyl group, or an aromatic group represented by the formula (2). In the formula (2), X represents CR9 or nitrogen.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. The organic EL device of this invention comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate wherein the light-emitting layer contains a phosphorescent dopant and a 1,9-substituted carbazole compound as a host material. An example of the 1,9-substituted carbazole compound is represented by the following general formula (1). In formula (1), Ar is an aromatic hydrocarbon group or aromatic heterocyclic group; L is an aromatic hydrocarbon group or aromatic heterocyclic group; each of R1 to R3 is a hydrogen atom, an alkyl group, a cycloalkyl group, an aromatic hydrocarbon group, or an aromatic heterocyclic group; n is an integer of 1 to 3.

Abstract: Provided is a display device that can be made thin, lightweight, and flexible, has no problems of cracks and peeling caused by thermal stress, and is excellent in dimension stability and the like. The display device includes: a supporting base including a polyimide film; and a gas barrier layer formed on the supporting base, in which the polyimide film has a transmittance of 80% or more in a wavelength region of from 440 nm to 780 nm, and a coefficient of thermal expansion of 15 ppm/K or less, and has a difference in coefficient of thermal expansion from the gas barrier layer of 10 ppm/K or less.

Abstract: Provided is an organic electroluminescent device (EL device) that uses an indolocarbazole compound. The organic EL device includes an anode, a plurality of organic layers including a phosphorescent light-emitting layer, and a cathode laminated on a substrate, in which at least one organic layer selected from the phosphorescent light-emitting layer, a hole-transporting layer, an electron-transporting layer, and a hole-blocking layer contains an indolocarbazole compound represented by the general formula (1). In the general formula (1), a ring I and a ring II represent rings represented by the formula (1a) and the formula (1b), respectively, each of which are fused to an adjacent ring. X's each represent nitrogen or C—Y and at least one of X's represents nitrogen. Y's each represent hydrogen, an alkyl group, a cycloalkyl group, or an aromatic group. A represents an alkyl group, a cycloalkyl group, or an aromatic group. At least one of Y and A represents an alkyl group or a cycloalkyl group.

Abstract: This invention provides a carbon nanostructure including: carbon containing rod-shaped materials and/or carbon containing sheet-shaped materials which are bound three-dimensionally; and graphene multilayer membrane walls which are formed in the rod-shaped materials and/or the sheet-shaped materials; wherein air-sac-like pores, which are defined by the graphene multilayer membrane walls, are formed in the rod-shaped materials and/or the sheet-shaped materials.

Abstract: Provided are a novel nitrogen-containing aromatic heterocyclic compound and an organic electronic device using the compound. Specifically provided is an organic electroluminescent device, including a plurality of organic layers between an anode and a cathode laminated on a substrate, in which at least one of the organic layers contains a nitrogen-containing aromatic compound represented by the following formula (1).

Abstract: Provided are an electrode for fuel cell including a support with improved durability and capable of suppressing poisoning of catalyst particles by ionomer, and a method for manufacturing the same. The method at least includes: performing heat treatment of a support made of mesoporous carbon having a crystallite diameter Lc at 002 plane that is 1.5 nm or less, at 1,700° C. or more and less than 2,300° C.; supporting catalyst particles at least inside of the support subjected to the heat treatment; and applying ionomer to the support supporting the catalyst particles for coating.

Abstract: Provided are a polymer for an organic electroluminescent element, which has high light emission efficiency and is applicable to a wet process, a cured product thereof, and an organic electroluminescent element using the cured product. The polymer for an organic electroluminescent element is represented by the following general formula (1) and includes an indolocarbazole skeleton and a polymerizable group as pendants in a repeating unit constituting a main chain, in which the polymer has a weight-average molecular weight of 1,000 to 1,000,000. An organic electroluminescent element that uses the cured product of the polymer for an organic electroluminescent element in an organic layer is also disclosed.

Abstract: Provided is an organic electroluminescent device (organic EL device), which has improved luminous efficiency, shows sufficiently ensured driving stability, and has a simple construction. The organic electroluminescent device includes an anode, a cathode, and organic layers including a hole-transporting layer and a light-emitting layer, the organic layers being interposed between the anode and the cathode, in which the light-emitting layer contains a phosphorescent light-emitting material and the hole-transporting layer and the light-emitting layer have an electron- and/or exciton-blocking layer therebetween, the electron- and/or exciton-blocking layer being adjacent to the light-emitting layer and containing an indolocarbazole compound represented by the general formula (2). In the formula, a ring B represents a heterocycle represented by the formula (1c) to be fused with adjacent rings, Z represents an n-valent aromatic hydrocarbon group or an aromatic heterocyclic group, and n represents 1 or 2.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secure of driving stability, and of a simple configuration. The organic EL device comprises organic layers comprising a hole-transporting layer and a light-emitting layer sandwiched between an anode and a cathode. The light-emitting layer contains a fluorescent light-emitting material and an electron- and/or exciton-blocking layer containing an indolocarbazole derivative represented by general formula (2) is disposed between the hole-transporting layer and the light-emitting layer so as to be adjacent to the light-emitting layer. In general formula (2), ring B is a heterocyclic ring fused to the adjacent rings and represented by formula (1c), Z is an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, and n is 1 or 2.