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: 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 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 represented by a formula (1). In the formula (1): X1 to X4 are each independently a nitrogen atom or CRx; at least one of X1 to X4 is a nitrogen atom; a ring A, a ring B, and a ring C are each independently an aromatic hydrocarbon ring or a heterocycle; Ar1 is a hydrogen atom, an aryl group, or a group represented by a formula (2); and Ar2 is an aryl group or a group represented by a formula (3).

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: A compound is represented by a formula (1) below. In the formula (1): R1 to R9, R101 to R108, and R111 to R118 are each independently a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 20 ring carbon atoms, or the like; Ar12 is a substituted or unsubstituted aryl group having 10 to 30 ring carbon atoms or the like; p is 0 or 1; q is 0 or 1; and p+q is 1 or 2.

Abstract: Heterocyclic compounds of the general structure (I) below with substituents as defined herein, and materials including one or more such compounds, preferably emitter materials, may be used for an organic electroluminescence device. An organic electroluminescence device may include one or more such specific heterocyclic compounds, as may electronic equipment and a light emitting layer further having at least one host and at least one dopant, wherein the dopant may have at least one of the specific heterocyclic compounds.

Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.

Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.

Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.

Abstract: The invention provides a polycyclic aromatic compound or a salt thereof having a partial structure represented by the following general formula (I): wherein X, ring A, ring B, ring C, and ring D are as defined in the specification.