Abstract: An organic compound represented by the following formula [1] has a high absorption coefficient in a long wavelength region and is thermally stable. In formula [1], Ar1 and Ar2 each represent a group independently selected from the group consisting of aryl group and heterocyclic groups, and A represents a cyclic structure. m represents an integer of 0 to 2. Q represents a structure represented by one of the following formulas [1-1] and [1-2], wherein n represents an integer of 0 to 2, and when n is 2, the two R4's may be the same as or different from each other, and the two R5's may be the same as or different from each other.

Abstract: An organic light emitting element includes, in sequence, an anode, a first light emitting layer, a second light emitting layer, and a cathode. The first light emitting layer includes a first compound and a first light emitting material. The second light emitting layer includes a second compound and a second light emitting material having an energy gap different from an energy gap of the first light emitting material. The organic light emitting element satisfies relations (a) to (c). LUMO(H1)>LUMO(D1)??(a) LUMO(H2)>LUMO(D2)??(b) LUMO(H2)?LUMO(D2)>LUMO(H1)?LUMO(D1)??(c) Where LUMO (H1), LUMO (D1), LUMO (H2), and LUMO (D2) represent a LUMO level of the first compound, a LUMO level of the first light emitting material, a LUMO level of the second compound, and a LUMO level of the second light emitting material, respectively.

Abstract: Provided is an organic photoelectric conversion element including: an electron-collecting electrode; a hole-collecting electrode; and a photoelectric converter, which is arranged between the electron-collecting electrode and the hole-collecting electrode, wherein the photoelectric converter includes at least a first organic compound layer, and wherein the first organic compound layer contains a compound represented by the following general formula [1].

Abstract: Provided is an organic compound represented by the general formula [1]: in the formula [1], R1 to R18 each represent a hydrogen atom, an alkyl group having 1 or more and 8 or less carbon atoms, an aromatic hydrocarbon group having 6 or more and 18 or less carbon atoms, or an aromatic heterocyclic group having 3 or more and 15 or less carbon atoms, and may be identical to or different from each other, and the plurality of R17's or the plurality of R18's may be identical to or different from each other, and the R1 to the R18 may each further have a substituent selected from a halogen atom and an alkyl group having 1 or more and 8 or less carbon atoms, and n represents an integer of 1 or more and 3 or less.

Abstract: Provided is an organic compound represented by the following general formula [1], the compound having an absorption peak in a long wavelength region of a visible light region: where Ar1 and Ar2 each represent an aryl group or the like, Ar3 represents an arylene group or the like, m represents an integer of 0 to 3, R1 to R4 each represent a hydrogen atom or the like, X1 and X2 are each independently selected from oxygen and sulfur, Q represents, for example, a substituent represented by the general formula [1-1], R5 to R7 each represent a hydrogen atom or the like, and n represents an integer of 0 to 2.

Abstract: A means can be used instead of or with conventional temperature control to achieve warming device temperature control at a lower cost, prevent or reduce deterioration of a warming device over time, and lower generated heat temperature due to storage at high temperatures. The warming device can be used for the same. A higher level temperature control means can be used for warming devices for medical applications. An improved warming device can be used for medical applications with a high level of safety and efficacy. A temperature control agent controls a maximum temperature of a warming device with a heat generating composition that generates heat by reaction with oxygen. Said agent includes an aliphatic compound that has a particle form that will not pass through a standard sieve with a #60 mesh, a melting point of 35-65° C., and an aqueous solubility (g/100 mL) at 20° C. of ?5.

Abstract: A white organic electroluminescent (EL) element includes, in sequence, an anode, a first light-emitting layer that is a blue-light-emitting layer, a hole-blocking layer, an electron transport layer, and a cathode. The hole-blocking layer is adjacent to the first light-emitting layer and the electron transport layer and formed of a hydrocarbon. The electron transport layer is formed of a nitrogen-containing heterocyclic compound. The first light-emitting layer contains a first host and a first dopant that emits blue fluorescent light. Relations (a), (b), and (c) are satisfied. LUMO(H1)>LUMO(D1)??(a) 0.1<d(ETL)/d(HBL)<0.7??(b) 90 nm?d(E)=d(HBL)+d(ETL)<150 nm??(c) LUMO (H1): lowest unoccupied molecular orbital (LUMO) energy of first host LUMO (D1): LUMO energy of first dopant d (HBL): thickness of hole-blocking layer d (ETL): thickness of electron transport layer.

Abstract: Provided is a cold-storage agent freezing at a temperature range of a freezer in a household refrigerator and excellent in cooling retaining performance. In a cold-storage agent including: water; ammonium chloride; potassium chloride; and sodium sulfate, content of the ammonium chloride, the potassium chloride, and the sodium sulfate satisfies the following Formula (1): 1.0<ammonium chloride/(potassium chloride+sodium sulfate)<5.

Abstract: The present invention provides a novel iridium complex and an organic light-emitting device including the novel iridium complex. The novel iridium complex includes three ligands, and two of them have a phenyl-naphtho[2,1-f]isoquinoline skeleton. The present invention also provides a display apparatus including the organic light-emitting device and an electrophotographic image-forming apparatus including a light source including the organic light-emitting device and including a photosensitive member.

Abstract: The present disclosure provides an organic compound represented by general formula [1] below. In formula [1], Ar1 and Ar2 each represent an alkyl group having 1 to 8 carbon atoms, an aromatic hydrocarbon group having 6 to 18 carbon atoms, or a heteroaromatic group having 3 to 17 carbon atoms. Ar1 and Ar2 may be the same or different. Ar3 and Ar4 are each a substituent having a carbazolyl group. Ar3 and Ar4 may be the same or different. Ar1 to Ar4 may be substituted. At least one of Ar1 to Ar4 has a tert-butyl group. The total number of tert-butyl groups in one molecule of the organic compound is 2 or more.

Abstract: An organic compound represented by formula (1) and an organic compound represented by formula (2). These organic compounds provide high color purity. In formulae (1) and (2), R1 to R24 are each independently selected from the group consisting of a hydrogen atom and a substituent.

Abstract: Provided is an organic light-emitting element having high luminous efficiency and a long lifetime. The organic light-emitting element includes a pair of electrodes and an organic compound layer placed between the pair of electrodes, in which the organic compound layer includes an iridium complex having a benzo[f]isoquinoline of a specific structure as a ligand and a metal complex compound of a specific structure.

Abstract: An organic compound that emits red light having a long wavelength is represented by formula (1). In formula (1), R1 to R24 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a silyl group, and a cyano group.

Abstract: A white organic electroluminescent (EL) element includes, in sequence, an anode, a first light-emitting layer that is a blue-light-emitting layer, a hole-blocking layer, an electron transport layer, and a cathode. The hole-blocking layer is adjacent to the first light-emitting layer and the electron transport layer and formed of a hydrocarbon. The electron transport layer is formed of a nitrogen-containing heterocyclic compound. The first light-emitting layer contains a first host and a first dopant that emits blue fluorescent light. Relations (a), (b), and (c) are satisfied. LUMO(H1)>LUMO(D1)??(a) 0.1<d(ETL)/d(HBL)<0.

Abstract: An organic photoelectric conversion element includes an anode, a cathode, and a photoelectric conversion portion between the anode and the cathode. The photoelectric conversion portion includes a first organic compound layer containing an organic compound. Also, a second organic compound layer is disposed between the cathode and the photoelectric conversion portion. The second organic compound layer contains an organic compound having an ionization potential of 5.1 eV or less and a band gap of 2.5 eV or more.

Abstract: The present disclosure provides an organic light emitting element which has a pair of electrodes and an organic compound layer disposed therebetween and in which the organic compound layer contains an organic compound represented by the following general formula [1], wherein in the formula [1], Ar1 and Ar2 each independently represent an aromatic hydrocarbon group or a heteroaromatic ring group, R1 to R4 are each independently selected from a hydrogen atom or a substituent, R1 and R2 and R3 and R4 each may form a benzene ring, wherein the benzene ring may have at least one substituent.

Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.

Abstract: The present disclosure provides a photoelectric conversion element including a lower electrode, a photoelectric conversion layer, and an upper electrode in this order; a voltage is applied between the lower electrode and the upper electrode; the photoelectric conversion layer contains a first organic compound and a second organic compound; the first organic compound has a lower oxidation potential than the second organic compound, and ?E represented by the following formula (A) satisfies the following formula (B); where ?E=oxidation potential of first organic compound?reduction potential of second organic compound (A) ?E?1.79[V]??(B).

Abstract: An organic EL element includes a first electrode, a first luminescent layer, a second luminescent layer, a third luminescent layer, and a second electrode, in this order. The second luminescent layer is in contact with the first luminescent layer and the third luminescent layer. The first luminescent layer contains a red dopant and a first host material. The second luminescent layer contains a blue dopant and a second host material, and the third luminescent layer contains a green dopant and the second host material. The second host material is different from the first host material.

Abstract: A stable 2,2?-bibenzo[d]imidazolidene compound is provided. The 2,2?-bibenzo[d]imidazolidene compound is expressed by the following General Formula (1). In General Formula (1), Ar1 to Ar8 each represent a substituted or unsubstituted condensed ring. R1 to R8 each represent a hydrogen atom or a substituent.