Abstract: A compound represented by a formula (1C-A) below. One of R4 to R8 and R10 to R12 is a group represented by a formula (1D-A) above; R1 to R3, R9, and R4 to R8 and R10 to R12 not being the group represented by the formula (1D-A) are each a hydrogen atom, a substituent, or the like; at least one of R21 to R30 is other than a hydrogen atom; when R11 is a group represented by a formula (1D), R12 is a hydrogen atom or a phenyl group; when R12 is a group represented by the formula (1D), R11 is a hydrogen atom or a phenyl group; in the formula (1D), one of R21 to R30 represents a bonding position to a benz[a]anthracene ring in the formula (1C), and R21 to R30 not being the bonding position are each a hydrogen atom, a substituent, or the like.

Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting region disposed between the anode and the cathode, in which the emitting region includes a first emitting layer and a second emitting layer, the first emitting layer contains a first compound represented by a formula below, and the second emitting layer contains a second compound. At least one of R101 to R112 in the formula (100A), L101 or Ar101 in the formula (100B) has at least one deuterium atom. When only L101 has at least one deuterium atom, the at least one deuterium atom is bonded to a ring that is of rings forming L1 and directly bonded to a benz[a]anthracene ring in the formula (100A).

Abstract: A compound is represented by a formula (1A-A). One of R4 to R8 and R10 to R12 is a group represented by a formula (1B-A1), (1B-A2), or (1B-A3) above; R1 to R3, R9, and R4 to R8 and R10 to R12 other than the above are each a hydrogen atom, a substituent, or the like; when R11 or R12 is a group represented by the formula (1B-A1), (1B-A2), or (1B-A3), R12 or R11 is a hydrogen atom or a phenyl group; and in the formulae (1B-A1) to (1B-A3), R51 to R57, R61 to R64, R71 to R74, and R81 to R84 forming no ring in the formulae (1B-A1) to (1B-A3) are each a hydrogen atom, a substituent, or the like; and * represents a bonding position to a benz[a]anthracene ring in the formula (1A-A).

Abstract: An organic EL device includes an emitting region and a first anode side organic layer. The first anode side organic layer contains a first material. The emitting region includes a first emitting layer containing first and second host materials and a second emitting layer containing a third host material.

Abstract: An organic electroluminescence device including: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the cathode and the emitting layer, the emitting layer comprises one or both of a compound represented by the following formula (1A) and a compound represented by the following formula (1B), and the first layer comprises a compound represented by the following formula (BE1):

Abstract: An organic electroluminescence device includes an emitting region provided between an anode and a cathode, in which the emitting region includes a first emitting layer and a second emitting layer, a ratio DEM1/DEM2 of a film thickness DEM1 of the first emitting layer to a film thickness DEM2 of the second emitting layer is in a range from 2/3 to 3/2, the first emitting layer contains a first host material and a first luminescent compound, the second emitting layer contains a second host material and a second luminescent compound, and the first host material is a compound represented by a formula (1) below having a group represented by a formula (10).

Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region.

Abstract: A compound represented by a formula (1). In the formula (1), HAr1 is a group represented by one of formulae (A) to (F) below.

Abstract: An organic electroluminescence device including: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the cathode and the emitting layer, the emitting layer comprises one or both of a compound represented by the following formula (1A) and a compound represented by the following formula (1B), and the first layer comprises a compound represented by the following formula (BE1):

Abstract: A compound represented by the following formula (1): where the variables are as defined in the disclosure. A material for organic electroluminescent devices containing the compound. An organic electroluminescent device containing a cathode, an anode, and an organic layer between the cathode and the anode. The organic layer includes a light emitting layer, and at least one layer of the organic layer contains the compound.

Abstract: A compound represented by the following formula (1): where N*, R, R1 to R7, R11 to R14, Ar1, Ar2, L, L1, and L2 are as defined in the disclosure. An organic electroluminescent device including a cathode, an anode, and one or more organic layers intervening between the cathode and the anode. The one or more organic layers include a light emitting layer, and at least one layer of the one or more organic layers contains the compound.

Abstract: An organic electroluminescence device and a monoamine compound for an organic electroluminescence device are provided. The monoamine compound is represented by Formula 1. In Formula 1, FR is a phenanthryl group which is substituted with one phenyl group.

Abstract: An organic electroluminescence device includes an emitting layer, in which the emitting layer includes at least one single layer containing a first host material, a second host material, and an emitting compound; the first host material and the second host material are mutually different; and a triplet energy of the first host material T1(H1), a triplet energy of the second host material T1(H2), and a triplet energy of the emitting compound T1(D) satisfy at least one of a relationship of a numerical formula (Numerical Formula 1) or a relationship of a numerical formula (Numerical Formula 2) below, T1(D)>T1(H1)??(Numerical Formula 1) T1(D2)>T1(H2)??(Numerical Formula 2).

Abstract: An organic electroluminescence device includes a first emitting layer and a second emitting layer provided between an anode and a cathode, in which the first emitting layer contains, as a first host material, a first compound represented by a formula (1) below and having at least one group represented by a formula (11) below, and the second emitting layer contains a second host material.

Abstract: A compound represented by a formula (1). In the formula (1), Rio is a group represented by one of formulae (11) to (14), and when R10 is a group represented by the formula (14), at least one of R11 to R18 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.

Abstract: An organic EL device includes: an anode; a cathode; an emitting region; and a hole transporting zone, in which the emitting region includes a first emitting layer containing a first host material and a second emitting layer containing a second host material, at least one organic layer in the hole transporting zone is a first organic layer, the first organic layer contains a hole transporting zone material, the first emitting layer is disposed close to the anode, and a triplet energy of the first host material T1(H1) and a triplet energy of the second host material T1(H2) satisfy Numerical Formula 1, and a dipole of the first host material is 0.4 D or more, T1(H1)>T1(H2)??(Numerical Formula 1).

Abstract: An organic electroluminescence device includes: an anode; a cathode; and an emitting layer provided between the anode and the cathode, in which the emitting layer includes a first emitting layer and a second emitting layer, and the first emitting layer contains, as a first host material, a first compound represented by a formula (1) below, in the formula (1): a cyclic structure A and a cyclic structure B are each independently, for instance, a cyclic structure selected from the group consisting of a substituted or unsubstituted aryl ring having 6 to 50 ring carbon atoms, and a substituted or unsubstituted heterocycle having 5 to 50 ring atoms; X1 is, for instance, an oxygen atom, a sulfur atom, NR71, and C(R72)(R73); and Y1 is, for instance, a sulfur atom, NR71A, or C(R72A)(R73A).

Abstract: A compound represented by the following formula (1): N*, R1 to R14, and Ar1 are as defined in the disclosure. An organic electroluminescent device, including an anode, a cathode, a light emitting layer intervening between the anode and the cathode, and an organic layer between the light emitting layer and the anode. The organic layer contains a compound represented by the following formula (2): N*, R1 to R9, Ar2 and Ar3 are as defined in the disclosure. An electronic device including the organic electroluminescent device.

Abstract: A compound represented by the following formula (1), wherein in the formula (1), A is a substituted or unsubstituted aromatic hydrocarbon ring group containing a nitrogen atom as a part of a substituent and having a fused ring composed of 5 or more rings, or a substituted or unsubstituted heterocyclic group containing a nitrogen atom as a part of the skeleton or a substituent and having a fused ring composed of 5 or more rings; B is a monovalent group represented by the following formula (b1); wherein in the formula (b1), *B is bonded with the nitrogen atom contained as a part of the skeleton of A or a substituent via a single bond.

Abstract: An organic electroluminescence device includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region.