Abstract: The present disclosure provides an organic compound represented by any of the following general formulae [1-1] and [1-2]: where R1 to R8 are each selected from a hydrogen atom, a halogen atom, a deuterium atom, and substituted or unsubstituted alkyl, alkoxy, amino, aryl, aryloxy, heteroaryl, cyano, and silyl groups, R4 may be combined with Ar1 to form a ring, Ar1 is a substituted or unsubstituted aryl or heterocyclic group, Ar2 is a substituted or unsubstituted divalent arylene group or divalent linking group, the divalent linking group being derived from a heterocyclic group, X1 and X2 are each selected from an oxygen atom, a sulfur atom, a selenium atom, a tellurium atom, and a nitrogen atom having substituent Z, and the substituent Z is a hydrogen atom, a deuterium atom, or a substituted or unsubstituted alkyl, aryl, or heteroaryl group.

Abstract: An organometallic complex represented by any one of formulas (1) to (3): In formulas (1) to (3), R1 and R2 are each independently selected from the group consisting of a hydrogen atom, a deuterium atom, hydrogen atoms, alkyl groups, silyl groups, and aryl groups. R3s are each independently selected from the group consisting of a deuterium atom, halogen atoms, a cyano group, alkyl groups, alkoxy groups, silyl groups, aryl groups, heterocyclic groups, and amino groups. Substituents may form a ring with each other. R4 to R6 are each independently selected from the group consisting of a deuterium atom, halogen atoms, a cyano group, alkyl groups, alkoxy groups, silyl groups, aryl groups, heterocyclic groups, and amino groups.

Abstract: The present disclosure provides an organic compound represented by the following general formula [1-1] or [1-2]. R1 to R22 are each independently selected from a hydrogen atom, an alkyl group, and so forth. Q1 to Q10 are each independently selected from a direct bond and a linking group. The linking group is selected from C(R23) (R24), N(R25), an oxygen atom, a sulfur atom, a selenium atom, and a tellurium atom. R23 to R25 are each independently selected from a hydrogen atom, an alkyl group, and so forth. Each n is 0 or 1, provided that in each of general formulae [1-1] and [1-2], at least one of n is 1. X is selected from an oxygen atom, a sulfur atom, a selenium atom, a tellurium atom, and N(R26). R26 is selected from a hydrogen atom, an alkyl group, and so forth.

Abstract: An organic light-emitting device including, in sequence, an anode, a light-emitting layer, a first organic compound layer in contact with the light-emitting layer, and a cathode, in which the light-emitting layer contains a host material and a guest material, the host material is a hydrocarbon compound whose carbon atoms are SP2 carbon atoms only, the hydrocarbon compound is represented by any of the following formulae [1-1] to [1-6]: Ar1 and Ar2 are each independently selected from aryl groups, each of Ar1 and Ar2 may further contain substituents, R1 to R8 are each independently selected from a hydrogen atom and aryl groups. The guest material is a light-emitting material containing a fluoranthene skeleton, and the first organic compound layer contains a compound containing fused polycyclic hydrocarbon skeleton having three or more rings and five or less rings.

Abstract: The present disclosure provides an organic light-emitting device including a pair of electrodes, and a light-emitting layer in which the light-emitting layer contains a guest molecule and a host molecule represented by the following general formula [1], and the guest molecule is an organometallic complex represented by the following general formula [2]: where in formula [1], R1 to R12 are each a hydrogen atom or a substituent, at least one of them is a substituent, each X is selected from an oxygen atom and so forth L, L?, and L? are each a different bidentate ligand, each of m, n and p is an integer, m+n+p=3, and a partial structure ML is selected from the foregoing general formulae [2-1] to [2-3], where in the formulae, R21 to R41 are each a hydrogen atom or a substituent.

Abstract: An organic light emitting element including an anode, a light emitting layer, and a cathode in this order, in which the light emitting layer contains a dopant material and a host material, the dopant material is a compound represented by General Formula [1], and the host material is a hydrocarbon. R1 to R8 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and the like, where R1 to R8 do not represent a cyano group, m represents an integer of 1 or greater and 3 or less, and n represents an integer of 0 or greater and 2 or less, where m+n is 3, and X represents a bidentate ligand.

Abstract: A heating body, in which a heat-generating composition that generates heat in the presence of air, is accommodated in a bag body formed by heat sealing a one-surface side laminated base material including a first base material and a second base material, and a covering material, at a peripheral edge portion thereof. The first base material has a nonwoven fabric layer and a heat sealable resin layer; and the second base material is a sheet in which an olefin-based nonwoven fabric layer and a resin film are laminated using an olefin-based resin. The first base material and the second base material are capable of forming a space into which a body part can be inserted or held. The heat sealable resin layer and the nonwoven fabric layer are bonded together, and the resin film of the second base material and the covering material are bonded together.

Abstract: An organometallic complex represented by the general formula [1]: Ir(L)m(L?)n??[1] L and L? denote different bidentate ligands. m is 1 or 2, and m+n=3, wherein the partial structure Ir(L)m is represented by the general formula [2-1] or [2-2], wherein R1 to R30 are selected from a hydrogen atom, an alkyl group, and the like, when at least one of R1 to R3 and at least one of R15 to R17 are not a hydrogen atom or a deuterium atom and when two of R1 to R3 and two of R15 to R17 are a hydrogen atom or a deuterium atom, the other one is a secondary or higher alkyl group, and L? denotes a bidentate ligand represented by the general formula [3] or [4]. R41 to R43 and R32 to R39 are selected from a hydrogen atom, an alkyl group, and the like.

Abstract: The present disclosure provides an organic compound represented by general formula [1]. In formula [1], R1 to R22 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and so forth. Ar is selected from the group consisting of a residue of an aromatic hydrocarbon and a residue of a heterocyclic compound. Q1 to Q4 are each independently a direct bond or a linking group. The linking group is selected from the group consisting of C(R23)(R24), N(R25), an oxygen atom, a sulfur atom, a selenium atom, and a tellurium atom. R23 to R25 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, and so forth. k, l, m, and n are each 0 or 1.

Abstract: An organic compound represented by formula [1] is provided. Ring A is a polycyclic aromatic hydrocarbon ring having a fluoranthene skeleton and having 16 to 60 carbon atoms and optionally has, as a substituent, a substituted or unsubstituted alkyl group or the like. Rings B1 and B2 are aromatic hydrocarbon rings having 6 to 18 carbon atoms and each have two or more electron withdrawing groups. Q1 and Q2 respectively represent one of the electron withdrawing groups of the ring B1 and one of the electron withdrawing groups of the ring B2, and are respectively located at an ortho position of the ring B1 and at an ortho position of the ring B2 with respect to the ring A.

Abstract: The present disclosure provides an organic compound represented by general formula [1] In formula [1], R1 and R2 are each independently selected from a hydrogen atom, an alkyl group, and so forth, where Each R3 is independently selected from a deuterium atom, an alkyl group, and so forth, and l is an integer of 0 or more and 8 or less, m is an integer of 1 or more and 3 or less, and n is an integer of 0 or more and 2 or less, provided that m+n is 3, and X is a bidentate ligand, and a partial structure IrX is any of structures represented by general formulae [2] and [3].

Abstract: In an organic light emitting element that includes an adjacent layer in contact with a cathode side of a light emission layer containing a host material and a light emitting dopant material, the adjacent layer is composed of an adjacent layer material having a bandgap of 3.0 eV or less, and the materials are selected so that the difference between an energy value at a peak wavelength of an emission spectrum of the adjacent layer material and an energy value at a longest wavelength-side peak wavelength in an absorption spectrum of the host material is 0.15 eV or less.

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 composition containing an organic compound AB and an organic compound AA different from the organic compound AB. The organic compound AB is represented by the following formula (1) and has a fused polycyclic structure A with two or more rings and a ring structure B different from the fused polycyclic structure A. The organic compound AA has the fused polycyclic structure A and is represented by the following formula (2). A-B ??(1) AA)n ??(2) In formulae (1) and (2), each of the fused polycyclic structures A may have, as a substituent, a deuterium atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.

Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.

Abstract: An organic compound represented by M(L1)n(L2)m (M represents a metal atom, n+m=3, n?1), in which M(L1) is represented by any one of General Formulae [1] to [3], and M(L2) is represented by General Formulae [4] or [5], a ring A is selected from structures represented by General Formulae [6] or [7],

Abstract: An organic light-emitting device includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a first organic compound, a first light-emitting material, and a second light-emitting material. The second light-emitting layer contains a second organic compound and a third light-emitting material. Each of the light-emitting materials is a fluorescent material. The following relationships or inequalities (a) to (c) are satisfied, S1D2>S1D1 ??(a), S1D3?S1D2 ??(b), and S1D2?S1D1>S1D3?S1D2 ??(c) where S1D1 is a singlet energy of the first light-emitting material, S1D2 is a singlet energy of the second light-emitting material, and S1D3 is a singlet energy of the third light-emitting material.

Abstract: An organic compound represented by formula [1]. In the formula rings Q represented by formula [1-1] are each independently present at positions *1 and *2 such that positions * of the rings Q correspond to the positions *1 and *2. The rings Q may be the same or different. R4 and R5 represent groups each independently selected from the group consisting of a hydrogen atom and a substituted or unsubstituted aryl group. The rings Q are aromatic hydrocarbons. R1 to R3 represent groups each independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a cyano group. At least one of R1 to R3 represents a cyano group.

Abstract: The present disclosure provides an organic light-emitting element including: a first electrode; a light-emitting layer; and a second electrode, wherein the light-emitting layer contains at least a first compound in which a naphthalene ring and a tricyclic or higher cyclic fused ring are bonded together by a single bond and a second compound in which the naphthalene ring and the fused polycyclic ring of the first compound are further cyclized.

Abstract: An organic light-emitting element including a positive electrode, a negative electrode; and a light-emitting layer between the positive electrode and the negative electrode, wherein the light-emitting layer contains a first compound represented by the following formula [1] and a second compound represented by the following formula [2]. In the following formula [1], L denotes a bidentate ligand with a main backbone of naphtho[2,1-f]isoquinoline or phenanthro[2,1-f]isoquinoline.