Abstract: Provided are a novel organic electroluminescent device material and an organic electroluminescent device using the same. The organic electroluminescent device material includes a compound represented by the following formula (1). The organic electroluminescent device of the present invention includes a substrate, an anode, an organic layer, and a cathode, the anode, the organic layer, and the cathode being laminated on the substrate, in which the organic layer contains the organic electroluminescent device material. The organic electroluminescent device material is suitable as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant. In the formula, L represents an aromatic group including at least one aromatic heterocyclic group, and Ar1 to Ar4 each represent an aromatic group.

Abstract: Provided are a novel chalcogen-containing aromatic compound and an organic electronic device using the compound. This compound is a chalcogen-containing aromatic compound represented by the formula (1). Among the organic electronic devices each using this chalcogen-containing aromatic compound are an organic EL device, an organic TFT device, a photovoltaic device, and the like. In the formula (1): X represents oxygen, sulfur, or selenium; A represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group, or an amino group; and n's each independently represent an integer of 0 to 2, provided that a sum of two n's is 1 to 4.

Abstract: Provided are a novel organic electroluminescent device material and an organic electroluminescent device using the same. The organic electroluminescent device material includes a compound represented by the following formula (1). The organic electroluminescent device of the present invention includes a substrate, an anode, an organic layer, and a cathode, the anode, the organic layer, and the cathode being laminated on the substrate, in which the organic layer contains the organic electroluminescent device material. The organic electroluminescent device material is suitable as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant. In the formula, L represents an aromatic group including at least one aromatic heterocyclic group, and Ar1 to Ar4 each represent an aromatic group.

Abstract: Disclosed is a useful organic EL device which comprises a phosphorescent light-emitting layer and is endowed with improved luminous efficiency and high driving stability. Also disclosed is a hole-transporting material suitable for use in the phosphorescent light-emitting device. The hole-transporting material is a triptycene derivative which has substituents at the 9- and 10-positions and is substituted with an aromatic group containing at least one diarylamino group (—ArNAr2). The organic EL device contains the triptycene derivative in at least one organic layer selected from the group of a phosphorescent light-emitting layer, a hole-transporting layer, an electron-blocking layer, and an exciton-blocking layer. The diarylamino group (—NAr2) may be fused to form an aromatic heterocyclic group such as a carbazolyl group.

Abstract: Provided are a material for an organic electroluminescent element formed of a silicon-containing four-membered ring compound, and an organic electroluminescent element using the material. The material for an organic electroluminescent element is formed of a compound represented by the following formula (1) and is used for, for example, a light-emitting layer containing a phosphorescent light-emitting dopant in an organic electroluminescent element. In the formula, X represents nitrogen or phosphorus, L's each represent an (n+1)-valent aromatic hydrocarbon group or aromatic heterocyclic group, and at least one of the L's represents an aromatic heterocyclic group. A1 to A6 each represent an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group, or an amino group, and n represents an integer of 0 to 3.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of high driving stability, and of a simple structure. The organic EL device is constituted of an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and a phosphine oxide derivative represented by general formula (1) is contained in a phosphorescent light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. In general formula (1), L1 is a direct bond or an aromatic group with a valence of 1-3 and Ar1 is an aromatic group. The two Ar1 groups linked to the same nitrogen atom may form a nitrogen heterocycle and may further form a fused ring together with the said nitrogen heterocycle.

Abstract: Provided are a novel chalcogen-containing aromatic compound and an organic electronic device using the compound. This compound is a chalcogen-containing aromatic compound represented by the formula (1). Among the organic electronic devices each using this chalcogen-containing aromatic compound are an organic EL device, an organic TFT device, a photovoltaic device, and the like. In the formula (1): X represents oxygen, sulfur, or selenium; A represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon group, an aromatic heterocyclic group, or an amino group; and n's each independently represent an integer of 0 to 2, provided that a sum of two n's is 1 to 4.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of high driving stability, and of a simple structure. The organic EL device is constituted of an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and a phosphine oxide derivative represented by general formula (1) is contained in a phosphorescent light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. In general formula (1), L1 is a direct bond or an aromatic group with a valence of 1-3 and Ar1 is an aromatic group. The two Ar1 groups linked to the same nitrogen atom may form a nitrogen heterocycle and may further form a fused ring together with the said nitrogen heterocycle.

Abstract: Disclosed is a useful organic EL device which comprises a phosphorescent light-emitting layer and is endowed with improved luminous efficiency and high driving stability. Also disclosed is a hole-transporting material suitable for use in the phosphorescent light-emitting device. The hole-transporting material is a triptycene derivative which has substituents at the 9- and 10-positions and is substituted with an aromatic group containing at least one diarylamino group (—ArNAr2). The organic EL device contains the triptycene derivative in at least one organic layer selected from the group of a phosphorescent light-emitting layer, a hole-transporting layer, an electron-blocking layer, and an exciton-blocking layer. The diarylamino group (—NAr2) may be fused to form an aromatic heterocyclic group such as a carbazolyl group.

Abstract: [Problem to be Solved] To provide an organic electroluminescence device with heat resistance capable of being driven by a low voltage. [Solution] An organic electroluminescence device includes a pair of anode and cathode opposed to each other; and a plurality of organic semiconductor layers layered or disposed between the anode and the cathode, the organic semiconductor layers including a light-emitting layer. At least one of the organic semiconductor layers contains a bulky organic semiconductor compound having an aromatic multi-membered ring structure and at least three aromatic substituents bonded thereto. Each of the aromatic substituents is arranged in a manner that a dihedral angle between a ring plane of the aromatic multi-membered ring structure and the ring plane of the aromatic substituent is within 70 to 90° determined by a semiempirical molecular orbital calculation method.

Abstract: A laminar clay having ion-exchange property is mixed with a solution containing polynuclear metal hydroxo cations or positively charged hydroxide or oxide fine particles to serve as precursor ions (3) of inorganic pillars so as to exchange a part of cations (2) between clay layers (1) with the precursor ions (3) of the inorganic pillars. Next, the laminar clay thus obtained is heat-treated at 100.degree. to 900.degree. C. to generate a porous clay intercalation compound, this porous clay intercalation compound is mixed with an ammonium salt aqueous solution to ion-exchange remaining cations (2) with ammonium ions (5). This porous clay intercalation compound is heat treated again at 200.degree. to 900.degree. C. to desorb ammonia, so as to allow hydrogen ions (6) to be carried in the pore portions of the porous clay intercalation compound and on its surface portions.

Abstract: A manufacturing method for ceramic-ceramic composite powders including the steps of; forming a suspension by mixing an inorganic powder having a cation-exchange property with a solution containing one or more metal ions to conduct ion exchange with the metal ions on the surface of the inorganic powder; adding to the suspension a precipitant-forming material which releases an anion in a solution when heated or pressurized; heating or pressurizing the suspension to release the anion which reacts with the metal ions to thereby precipitate metal hydroxides, metal basic salts or metallic salts on the surface of the inorganic powder; and thereafter heating the inorganic powder with the resultant precipitates to convert the precipitates into metal oxides. Metal-ceramic composite powders are manufactured by reducing the above metal oxides on the surface of the inorganic powder to metal. In the composite powders any arbitrary amount of metal oxides or metal is supported on the surface of the inorganic powder.