Abstract: Provided is a thermally activated delayed fluorescent blue light-emitting organic EL device having high luminous efficiency and a long lifetime. The organic electroluminescent device includes one or more light-emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light-emitting layers contains an indolocarbazole compound represented by the following general formula (1), which serves as a thermally activated delayed fluorescent light-emitting material, and a carbazole compound serving as a host material, and a substituent Ar2 with which a N atom in the indolocarbazole ring compound is substituted has at least one fluorine atom.

Abstract: Provided are an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction, and a material for an organic EL device to be used in the device. The material for an organic EL device includes a carborane compound represented by the general formula (1), and the carborane compound has a structure in which a six-membered ring group containing at least two nitrogen atoms is bonded to a carborane ring. The material for an organic EL device is suitable as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant and the host material, or as a material for a hole-blocking layer. In the formula, rings A's each represent a divalent carborane group represented by the formula (1a) or the formula (1b), and two or more of X's each represent N.

Abstract: This brake pedal device includes an arm portion (21) pivotally supported on a vehicle body to be rotatable, and a pedal portion (22) provided at a distal end portion (21b) of the arm portion (21). The pedal portion (22) includes a first operation portion (31) configured to operate a brake (102), a first uneven portion (33) formed on at least a part of the first operation portion (31), a second operation portion (32) provided at a position different from the first operation portion (31), and a second uneven portion (34) formed on at least a part of the second operation portion (32).

Abstract: Provided are a material for an organic EL device that improves the luminous efficacy of a device, sufficiently secures its driving stability, and has a simple construction, and an organic EL device using the material. The material for an organic EL device is formed of a carborane compound having a structure in which a dibenzofuranyl group is bonded to a carborane ring. In addition, the material for an organic EL device is preferably used in a light-emitting layer, an electron-transporting layer, or a hole-blocking layer of an organic electroluminescent device having the light-emitting layer between an anode and a cathode laminated on a substrate. Also disclosed is an organic electroluminescent device using the material for an organic EL device as a host material for a light-emitting layer containing a phosphorescent light-emitting dopant and the host material.

Abstract: Provided is an organic EL device that exhibits high luminous efficiency and has high stability when driven despite having low voltage. The organic electroluminescent device is obtained by laminating an anode, organic layers and a cathode on a substrate, wherein at least one of the organic layers contains (i) a compound represented by chemical formula (1) below, and (ii) a carborane compound having one or more divalent carborane groups and an aromatic group substituted for the carborane group. In the formulas, X1 and X2 represent NR1, PR2, O, S, Se, CR3R4 or SiR5R6 and Y represents a single bond or aromatic group.

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 to be used in the device. The material is a material for an organic electroluminescent device formed of a carborane ring compound having a structure in which two indolocarbazole groups are each bonded to a carborane ring through an aromatic group. In addition, the device is an organic electroluminescent device having organic layers 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. When the organic layer is a light-emitting layer, the layer contains a phosphorescent light-emitting dopant and contains the material for an organic electroluminescent device as a host material.

Abstract: Provided is a thermally activated delayed fluorescence-emitting organic EL element having a low driving voltage, high luminous efficiency, and a prolonged lifespan. The organic EL element contains one or more light-emitting layers between an anode and a cathode that face each other, and at least one light-emitting layer contains a host material composed of a carbazole compound represented by formula (1) and a thermally activated delayed fluorescence material composed of an indolocarbazole compound containing an indolocarbazole ring in its molecule. Here, L1 represents an aromatic group, and at least one R1 represents a carbazolyl group, and n is 1 or 2.

Abstract: Provided are an organic EL device having high efficiency and high driving stability, and a compound suitable for the device. Provided is a material for an organic electroluminescent device formed of a carborane compound having a structure in which: one or two boron atoms of a carborane ring C2B10H12 are substituted with an aromatic hydrocarbon group or an aromatic heterocyclic group; and the two carbon atoms of the carborane ring are each bonded to an aromatic hydrocarbon group or an aromatic heterocyclic group, or are each bonded to any other carborane ring when a plurality of carborane rings are present. Also provided is an organic electroluminescent device in which the material for an organic electroluminescent device is used in a light-emitting layer, an electron-transporting layer, or a hole-blocking 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: The present invention discloses an organic electroluminescent (EL) device having improved luminous efficiency, sufficiently secured driving stability, and a simple construction. The organic EL device of the present invention includes, between an anode and a cathode laminated on a substrate, an organic layer including a material for a luminescent device, in which the material for a luminescent device includes a carborane compound. The carborane compound includes a branched carborane compound in which three or more carborane rings bonded to one another through an aromatic group are present, at least one dibenzothiophene ring is present, and the at least one dibenzothiophene ring is bonded to the carborane ring.

Abstract: In an air cleaner, an air cleaner case having an upper opening which opens upward is formed. The air cleaner case is formed of a front wall, a rear fender, and right and left side covers. The upper opening is closed by a seat. A sound absorbing member is bonded to a bottom plate of the seat and housed in an air cleaner space. The intake noise in the air cleaner is absorbed by the sound absorbing member.

Abstract: Provided is a practically useful organic EL element having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic EL element has a light-emitting layer and any other organic layer between an anode and a cathode opposite to each other. The light-emitting layer contains at least two host materials and at least one light-emitting dopant. At least one of the host materials is a host material selected from compounds each having one or two indolocarbazole skeletons, and at least one of the other host materials is a host material selected from carbazole compounds each substituted with a dibenzofuran or a dibenzothiophene.

Abstract: This brake pedal device includes an arm portion (21) pivotally supported on a vehicle body to be rotatable, and a pedal portion (22) provided at a distal end portion (21b) of the arm portion (21). The pedal portion (22) includes a first operation portion (31) configured to operate a brake (102), a first uneven portion (33) formed on at least a part of the first operation portion (31), a second operation portion (32) provided at a position different from the first operation portion (31), and a second uneven portion (34) formed on at least a part of the second operation portion (32).

Abstract: Provided is a practically useful organic electroluminescent device (organic EL device) having high efficiency and high driving stability while being capable of being driven at a low voltage. The organic electroluminescent device includes a light-emitting layer between an anode and a cathode opposite to each other. The light-emitting layer contains two host materials and at least one light-emitting dopant. One of the two host materials is a host material selected from an indolocarbazole compound having one indolocarbazole ring and an indolocarbazole compound having two indolocarbazole rings, and the other thereof is a host material selected from carbazole compounds.

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: 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: The purpose of the present invention is to provide an organic EL element which exhibits high driving stability and high luminous efficiency at a low voltage. Provided is an organic electroluminescent element in which an anode, organic layers and a cathode are laminated on a substrate, wherein a biscarbazole compound (i) represented by general formula (1) and a carborane compound (ii) having one or more carborane rings and an aromatic group bonded to the carborane ring(s) are contained in at least one of the organic layers. Here, R and R? each denote a hydrogen atom, an aromatic hydrocarbon group, a heterocyclic group, an alkyl group, or the like, m is a number between 1 and 6, and X1 to X3 are each N, C—R? or C—.

Abstract: Provided is an organic electroluminescence device (organic EL device) that is driven at a low voltage, exhibits high luminous efficiency and has a long service life. The organic EL device contains one or more light emitting layers and one or more electron transport layers between opposing anode and cathode, wherein at least one of the electron transport layers contains a an indolocarbazole compound represented by general formula (1) below and an electron donor. In the formula, ring A represents an aromatic hydrocarbon ring represented by formula (1a), ring B represents a heterocyclic ring represented by formula (1b), L represents a single bond or aromatic hydrocarbon group, X represents N or C—Ar1 and at least one of X represents N, and Y and Ar1 represent a hydrogen atom, aromatic hydrocarbon group or aromatic heterocyclic group.

Abstract: Provided is an organic EL element which is low voltage and has practical use utility while exhibiting high light emission efficiency and drive stability. Thus, an organic electroluminescent element obtained by layering a positive electrode, an organic layer and a negative electrode on a substrate, wherein at least one layer among the organic layers contains (i) a carbazole compound represented by general formula (1), and (ii) a carborane compound having one or more divalent carborane compounds and an aromatic group substituted for a carborane compound. Herein, L1 is an aromatic hydrocarbon group, an aromatic heterocyclic group, or a linked aromatic group configured by linking 2-6 of said aromatic rings, p is an integer of 1-3, and m is an integer of 2-4.

Abstract: Provided is an organic EL device that exhibits high luminous efficiency and has high stability when driven despite having low voltage. The organic electroluminescent device is obtained by laminating an anode, organic layers and a cathode on a substrate, wherein at least one of the organic layers contains (i) a compound represented by chemical formula (1) below, and (ii) a carborane compound having one or more divalent carborane groups and an aromatic group substituted for the carborane group. In the formulas, X1 and X2 represent NR1, PR2, O, S, Se, CR3R4 or SiR5R6 and Y represents a single bond or aromatic group.