Abstract: [Object] To provide a light emitting element having a configuration in which a color change depending on the current density is less likely to occur. [Solution] A light emitting element includes: a structure in which an anode 51, an organic layer 70 containing an organic material and including a light emitting layer, and a cathode 52 are stacked. The light emitting layer includes, from a side of the anode to a side of the cathode, two or more light emitting regions configured to emit different colors of light. Each light emitting region contains a host material and a dopant material. An absolute value of an ionization potential of the host material contained in a light emitting region near to the cathode is larger than an absolute value of an ionization potential of the host material contained in a light emitting region near to the anode.

Abstract: Provided are an asymmetric monoanthracene derivative having a specific structure, a material for an organic EL device comprising the above asymmetric monoanthracene derivative and an organic EL device in which an organic thin film layer comprising a single layer or plural layers including a luminescent layer is interposed between a cathode and an anode, wherein at least one of the above organic thin film layers contains the asymmetric monoanthracene derivative described above in the form of a single component or a mixed component. Provided are an organic electroluminescent (EL) device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.

Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.

Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.

Abstract: An organic EL device capable of driving at low voltage and having high emission efficiency and long lifetime and a material for organic EL devices which realize such an organic EL device are provided. The material for organic EL devices is a compound represented by formula (A1) or (B1): wherein R1 to R8, n1, m2, k3, k4, n5, m6, L0 to L2, and Ar are as defined in the description.

Abstract: Provided is a high-molecular compound having a structural unit (A) and a structural unit (B) differing from each other, wherein the structural unit (A) is represented by the following general formula (A-1) and the structural unit (B) has a structure containing an arylene group or a heteroarylene group. The high-molecular compound can produce an organic EL device having a long lifetime, and is favorable as a forming material for organic EL devices. [In the formula, ArA represents a linking group having a fluorene skeleton, L1, L2, Ar1 and Ar2 each are a predetermined group, at least one of Ar1 and Ar2 is a monovalent organic group represented by the following general formula (a). (In the formula, X represents a divalent group selected from —O—, —S—, —N(Rx)—, etc., R1 and R2 each represent a substituent, p is an integer of 0 to 3, q is an integer of 0 to 4, and * indicates a bonding position to L1 or L2.

Abstract: Provided is an ink composition including the following components (A), (B), and (C). The component (A) is an anthracene derivative represented by the following formula (A1). The component (B) is an aromatic amine derivative represented by the following formula (B1) (in the formula (B1), one or more of Ar1 to Ar4 are a heterocyclic group represented by the following formula (B1?)). The component (C) is a solvent represented by the following formula (C1) and having a boiling point of 110° C. or higher and a solubility of 1 wt % or less in water.

Abstract: An organic electroluminescence device including: an anode; one or more organic thin film layers including an emitting layer; a donor-containing layer; an acceptor-containing layer; and a light-transmissive cathode in this order, wherein the donor-containing layer comprises a compound represented by the following formula (I) or (II):

Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.

Abstract: A cross-conjugated polymer having a hole transporting property and a solubility suitable for forming a film by coating, a material including the polymer for electronic device and organic electroluminescence device, a solution including the polymer, and an organic electroluminescence device are described. The organic electroluminescence device contains a cathode, an anode, and at least one organic thin film layer disposed between the cathode and the anode and contains a light emitting layer. At least one of the at least one organic thin film layer is a hole injecting layer or a hole transporting layer, and at least one of the hole injecting layer and the hole transporting layer contains the cross-conjugated polymer having a structural unit (A) for forming a cross-conjugation system as a repeating unit and a substituent X containing at least one of an arylamine portion, a carbazole portion, and an indole portion as a side chain.

Abstract: A polymer compound which includes repeating units represented by formula (1-1) or (1-2) and an organic EL device including the polymer compound as an organic layer are provided: wherein each of R1 to R6 independently represents a linear or branched alkyl group having 1 to 20 carbon atoms, a linear or branched alkoxy group having 1 to 20 carbon atoms, a linear or branched alkylthio group having 1 to 20 carbon atoms, a linear or branched alkenyl group having 2 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 30 ring carbon atoms, or a heteroaryl group having 5 to 30 ring atoms; each of a and b independently represents an integer of 0 to 4; each of c and d independently represents an integer of 0 to 3; and each of Ar1, Ar2, Ar3, and Ar4 independently represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms.

Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.

Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.

Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.

Abstract: Disclosed is a light-emitting material for organic electroluminescent (EL) devices which is composed of an asymmetric anthracene derivative of a specific structure. Also disclosed are a material for organic EL devices and an organic EL device wherein an organic thin film layer composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. At least one layer composed of the organic thin film layer contains the material for organic EL devices by itself or as a component of a mixture. Consequently, the organic EL device has a high efficiency and a long life. Also disclosed are a light-emitting material for organic EL devices and material for organic devices which enable to realize such an organic EL device.

Abstract: An aromatic amine derivative represented by the following formula (1) wherein at least one of Ar1 to Ar4 is a heterocyclic group represented by the following formula (2) wherein X1 is an oxygen atom or a sulfur atom.

Abstract: A compound represented by formula (1): wherein R1 to R4, a to d, L0 to L2, and Ar are as defined in the description, is a material providing an organic electroluminescence device which can be operated at a low driving voltage and has a long lifetime.

Abstract: An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.

Abstract: Provided is an ink composition including the following components (A), (B), and (C). The component (A) is an anthracene derivative represented by the following formula (A1). The component (B) is an aromatic amine derivative represented by the following formula (B1) (in the formula (B1), one or more of Ar1 to Ar4 are a heterocyclic group represented by the following formula (B1?)). The component (C) is a solvent represented by the following formula (C1) and having a boiling point of 110° C. or higher and a solubility of 1 wt % or less in water.

Abstract: Provided is an ink composition including the following components (A), (B), and (C). The component (A) is an anthracene derivative represented by the following formula (A1). The component (B) is an aromatic amine derivative represented by the following formula (B1). The component (C) is a solvent represented by the following formula (C1) and having a boiling point of 110° C. or higher and a solubility of 1 wt % or less in water. where one or more of Ar1 to Ar4 are a heterocyclic group represented by a formula (B1?).