Abstract: An organic material represented by General Formula (1): where, in General Formula (1), R1 is an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; n is an integer of from 1 through 3; X1 to X4 are each a hydrogen atom or a fluorine atom; and Z is a compound represented by General Formula (2), (3), or (4) below: where, in General Formulae (2) to (4), R2, R3, and R4 are each an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; and Y is an oxygen atom or a sulfur atom.

Abstract: Provided are an emission material and an organic EL device including the emission material and having high emission efficiency and a long lifetime. An organic EL device comprising light emitting layers between an anode and a cathode opposite to each other; wherein at least one of the light emitting layers contains, as a light emitting dopant, a compound in which a backbone having a specific 5-ring-fused ring structure, and a boron atom are combined, and the compound is represented by the following general formula (1).

Abstract: Provided is a thermally activated delayed fluorescence organic EL device having high emission efficiency and a long lifetime. An organic EL device comprising light emitting layers between an anode and a cathode opposite to each other; wherein at least one of the light emitting layers contains, as a thermally activated delayed fluorescence material, a compound in which a boron-containing electron acceptor backbone is linked with an electron donor backbone having a specific fused ring structure; and the compound is represented by the following general formula (1) where X1 is O or S.

Abstract: A light emitting element includes a first electrode, a second electrode, and at least one functional layer which is disposed between the first electrode and the second electrode and includes a compound represented by Formula 1 below, thereby exhibiting high efficiency characteristics. The compound of Formula 1 may be included in the emission layer of the light emitting element as a dopant.

Abstract: An organic electroluminescence device in which a polycyclic compound including an electron donor and an electron acceptor is included in an emission layer is provided. The electron donor contains an acridine derivative or a dibenzo-azasiline derivative, and the electron acceptor contains B as a ring-forming atom, O or S directly bonded to B, and a heterocyclic group in which three or five hexagonal rings are condensed. Accordingly, an organic electroluminescence device having high efficiency may be achieved.

Abstract: Provided are compounds represented by, for example, formula (1) (wherein R1, R2, R3 and R4 each independently represent a hydrogen atom, an alkyl group, or a heteroaryl group, not all of R1, R2, R3 and R4 being hydrogen atoms), a luminescent material including at least one compound selected from among the compounds, and a luminescent element including the luminescent material.

Abstract: A light emitting device of an embodiment includes a first electrode, a second electrode facing the first electrode, and multiple organic layers disposed between the first electrode and the second electrode. At least one among the organic layers includes a fused polycyclic compound represented by Formula 1 below, thereby showing improved emission efficiency.

Abstract: A compound that emits fluorescence and delayed fluorescence is provided as a material for an organic electroluminescent device of high efficiency, and an organic photoluminescent device and an organic electroluminescent device of high efficiency and high luminance are provided using this compound. The compound of general formula (1) having a tetraazatriphenylene ring structure is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.

Abstract: Provided are: a dicyano N-heterocyclic compound represented by formula (I) (in the formula, R3 represents an electron-donating group, and n represents the number of repetitions of the content in brackets and is 0 or 1), the compound having exceptional heat resistance and light emission characteristics; a light-emitting material; and a light-emitting element in which the same is used.

Abstract: An organic electroluminescence device exhibiting high light emission efficiency is provided, which includes a first electrode, a second electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer may include a compound represented by Formula 1.

Abstract: A compound represented by formula (I). In formula (I), each L independently represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, n indicates the number of L groups, and is either 1 or 2, each Q independently represents a substituted or unsubstituted 3,6-di-t-butyl-9H-carbazol-9-yl group, a substituted or unsubstituted 3,6-diphenyl-9H-carbazol-9-yl group, or a substituted or unsubstituted 3-phenyl-6-t-butyl-9H-carbazol-9-yl group, and in indicates the number of Q groups, and has a value of 5?n.

Abstract: A compound represented by the general formula (11) is useful as a light-emitting material. R1, R2, R4 and R5 represent a group represented by the general formula (2), R11 to R20 represent a hydrogen atom or a substituent, and L12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.

Abstract: An organic material represented by General Formula (1): where, in General Formula (1), R1 is an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; n is an integer of from 1 through 3; X1 to X4 are each a hydrogen atom or a fluorine atom; and Z is a compound represented by General Formula (2), (3), or (4) below: where, in General Formulae (2) to (4), R2, R3, and R4 are each an alkyl group having 6 carbon atoms or more but 20 carbon atoms or less; and Y is an oxygen atom or a sulfur atom.

Abstract: A compound that emits fluorescence and delayed fluorescence is provided as a material for an organic electroluminescent device of high efficiency, and an organic photoluminescent device and an organic electroluminescent device of high efficiency and high luminance are provided using this compound. The spiro compound of a general formula (1) having an azafluorene ring structure is used as a constituent material of at least one organic layer in an organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.

Abstract: A polycyclic compound and an organic electroluminescence device including the same. The polycyclic compound according to an example embodiment is represented by the following Formula 1. wherein in Formula 1, Cy1 is carbonyl-containing five- or six-membered and substituted or unsubstituted cyclic hydrocarbon or substituted or unsubstituted heterocycle, and R1 to R4 are each independently a hydrogen atom or a group represented by the following Formula 2 or 3.

Abstract: An organic electroluminescence device in which a polycyclic compound including an electron donor and an electron acceptor is included in an emission layer is provided. The electron donor contains an acridine derivative or a dibenzo-azasiline derivative, and the electron acceptor contains B as a ring-forming atom, O or S directly bonded to B, and a heterocyclic group in which three or five hexagonal rings are condensed. Accordingly, an organic electroluminescence device having high efficiency may be achieved.

Abstract: A nitrogen-containing compound and an organic electroluminescence device including the same, the nitrogen-containing compound being represented by the following Formula 1:

Abstract: To provide an organic compound represented by the following general formula (1): where R1 is a C2-C6 alkyl group or a hydrogen atom, R2 and R3, which may be identical or different, are each a C2-C12 alkyl group, and R4 and R5, which may be identical or different, are each a C6-C12 alkyl group that may be a branched chain or a straight chain.

Abstract: A compound represented by formula (I) or formula (II): in formula (I), R3 represents an electron donating group, R4 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L3 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L4 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L3 and L4 may bond together to form a ring with the carbon atoms to which they are bonded, in formula (II), R5 represents an electron donating group, R6 represents a hydrogen atom, a substituted or unsubstituted aryl group or an electron donating group, L5 represents a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group, L6 represents a single bond, a substituted or unsubstituted heteroarylene group or a substituted or unsubstituted arylene group.

Abstract: A high light emission efficiency can be achieved by the use of a compound represented by the general formula (1) as a host material or a light-emitting material of a light-emitting layer of an organic light-emitting device. X1 to X12 each independently represent C or BH constituting carborane, provided that among X1 to X12, the bonding positions to A and D each represent C, and the other thereof each represent BH; A represents an acceptor bonded to the carborane through an aromatic ring or a heteroaromatic ring; and D represents a donor bonded to the carborane through an aromatic ring or a heteroaromatic ring.