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: A light-emitting material containing a compound represented by the general formula (1) is capable of achieving an excellent external quantum efficiency on using in an organic light-emitting device. R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 represents a substituted or unsubstituted carbazolyl group; and Ar1 to Ar3 represent a substituted or unsubstituted aromatic ring or heteroaromatic ring.

Abstract: A photoelectric conversion material includes a compound represented by Formula (1): where, X is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, and a cyano group; and Y represents a monovalent substituent represented by Formula (2): where, R1 to R10 each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; or two or more of R1 to R10 bond to each other to form one or more rings, and the remainders each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; * denotes the binding site of Y in Formula (1); and Ar1 is selected from the group consisting of structures represented by Formulae (3): where ** denotes a binding site of Ar1 with N in Formula (2).

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 photoelectric conversion material includes a compound represented by Formula (1): where, X is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, and a cyano group; and Y represents a monovalent substituent represented by Formula (2): where, R1 to R10 each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; or two or more of R1 to R10 bond to each other to form one or more rings, and the remainders each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; * denotes the binding site of Y in Formula (1); and Ar1 is selected from the group consisting of structures represented by Formulae (3): where ** denotes a binding site of Ar1 with N in Formula (2).

Abstract: A photoelectric conversion material includes a compound represented by Formula (1): where, X is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, and a cyano group; and Y represents a monovalent substituent represented by Formula (2): where, R1 to R10 each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; or two or more of R1 to R10 bond to each other to form one or more rings, and the remainders each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; * denotes the binding site of Y in Formula (1); and Ar1 is selected from the group consisting of structures represented by Formulae (3): where ** denotes a binding site of Ar1 with N in Formula (2).

Abstract: An organic light-emitting device having a light-emitting layer containing a compound represented by the general formula below has a high light emission efficiency. In the general formula, at least one of R1 to R5 represents a cyano group, at least one of R1 to R5 represents a 9-carbazolyl group, a 1,2,3,4-tetrahydro-9-carbazolyl group, a 1-indolyl group or a diarylamino group, and the balance of R1 to R5 represents a hydrogen atom or a substituent.

Abstract: An organic light-emitting device having a light-emitting layer containing a compound represented by the general formula below has a high light emission efficiency. In the general formula, at least one of R1 to R5 represents a cyano group, at least one of R1 to R5 represents a 9-carbazolyl group, a 1,2,3,4-tetrahydro-9-carbazolyl group, a 1-indolyl group or a diarylamino group, and the balance of R1 to R5 represents a hydrogen atom or a substituent.

Abstract: A photoelectric conversion material includes a compound represented by Formula (1): where, X is selected from the group consisting of a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, and a cyano group; and Y represents a monovalent substituent represented by Formula (2): where, R1 to R10 each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; or two or more of R1 to R10 bond to each other to form one or more rings, and the remainders each independently represent a hydrogen atom, a deuterium atom, a halogen atom, an alkyl group, or an aryl group; * denotes the binding site of Y in Formula (1); and Ar1 is selected from the group consisting of structures represented by Formulae (3): where ** denotes a binding site of Ar1 with N in Formula (2).

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. R1, R3, and R5 each represent a cyano group, or R1, R2, R4, and R5 each represent a cyano group; and the others of R1 to R6 each represent a group represented by any one of the following general formula (4), etc.

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. R1, R3, and R5 each represent a cyano group, or R1, R2, R4, and R5 each represent a cyano group; and the others of R1 to R6 each represent a group represented by any one of the following general formula (4), etc.

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), Ar1 to Ar3 each represent a substituted or unsubstituted aryl group, provided that at least one of Ar1 to Ar3 each represent a carbazolyl group having an N-position substituted with a group containing an electron withdrawing group.

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 a general formula (1) having a diazatriphenylene ring structure is used as a constituent material of at least one organic layer in the organic electroluminescent device that includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes.

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), Ar1 to Ar3 each represent a substituted or unsubstituted aryl group, provided that at least one of Ar1 to Ar3 each represent a carbazolyl group having an N-position substituted with a group containing an electron withdrawing group.

Abstract: The compound represented by the following general formula is useful as a light emitting material. Ar1 represents an arylene group, Ar2 and Ar3 represent an aryl group, and R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 represents a diarylamino group.

Abstract: A compound represented by D-A-D is useful as a light emitter for an organic electroluminescent device:

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), Ar1 to Ar3 each represent a substituted or unsubstituted aryl group, provided that at least one of Ar1 to Ar3 each represent a carbazolyl group having an N-position substituted with a group containing an electron withdrawing group.

Abstract: An organic light-emitting device having a light-emitting layer containing a compound represented by the general formula below has a high light emission efficiency. In the general formula, at least one of R1 to R5 represents a cyano group, at least one of R1 to R5 represents a 9-carbazolyl group, a 1,2,3,4-tetrahydro-9-carbazolyl group, a 1-indolyl group or a diarylamino group, and the balance of R1 to R5 represents a hydrogen atom or a substituent.

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), Ar1 to Ar3 represent an aryl group, provided that at least one thereof represents an aryl group substituted by a group represented by the general formula (2). In the general formula (2), R1 to R8 represent a hydrogen atom or a substituent; Z represents O, S, O?C or Ar4—N; and Ar4 represents an aryl group.

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.