Abstract: Asymmetric pyrene derivatives having specific structure. An organic EL device comprising at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises at least one kind selected from the aforementioned asymmetric pyrene derivatives singly or as a component of mixture thereof. An organic EL device exhibiting a great efficiency of light emission and having a long lifetime, and also asymmetric pyrene derivatives for realizing the organic EL device are provided.

Abstract: A benzanthracene derivative having hydrogen atom at the 12-position, and an organic electroluminescence device having an organic thin film layer, which has one layer or a plurality of layers including at least a light emitting layer, is disposed between a cathode and an anode and contains the benzanthracene derivative in at least one layer in the organic thin film layer singly or as a component of a mixture. The electroluminescence device provides a great efficiency of light emission, has a long life and exhibits an excellent chromaticity.

Abstract: A aromatic amine derivative having an specific structure having a diphenyl amino group, and two or more of substituent bonding to benzene ring thereof, and in an organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, at least one of the organic thin film layer comprises the aromatic amine derivative singly or a component for a mixture thereof. The organic electroluminescence device exhibiting a long lifetime and high current efficiency as well as emitting blue light with high color purity, and also the aromatic amine derivative for realizing the organic EL device are provided.

Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.

Abstract: Asymmetric pyrene derivatives having specific structure. An organic EL device comprising at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises at least one kind selected from the aforementioned asymmetric pyrene derivatives singly or as a component of mixture thereof. An organic EL device exhibiting a great efficiency of light emission and having a long lifetime, and also asymmetric pyrene derivatives for realizing the organic EL device are provided.

Abstract: Provided is an organic electroluminescence device which includes an organic thin film layer composed of one or more layers including at least one light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin layer contains an asymmetric fluorene-based derivative compound of a specific structural formula and an amine compound of a specific structural formula. This organic electroluminescence device has excellent heat resistance and a long lifetime and can emit any of blue, green, and red lights at a high luminous efficiency.

Abstract: Provided are a pyrene derivative of a specified structure and an organic electroluminescence device including an organic thin film layer formed of one or multiple layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the pyrene derivative alone or as a component of mixture. Thus, there are provided an organic electroluminescence device capable of obtaining long-life blue light emission with high luminous efficiency and a novel pyrene derivative for realization thereof.

Abstract: An anthracene derivative with a specified asymmetrical type structure. An organic electroluminescence device which comprises at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the anthracene derivative. An organic electroluminescence device which emits blue light of enhanced purity and has a long lifetime is provided.

Abstract: A biphenyl derivative having a specific structure and an organic electroluminescent device having a long lifetime due to comprising at least one of organic thin film layers including a light emitting layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein the organic thin film layer contains the biphenyl derivatives, singly or as a component of a mixture are provided, and also the biphenyl derivatives particularly suitable for a light emitting material of the organic EL device of the present invention is provided.

Abstract: An organic electroluminescent device 1 including: an anode 12, a cathode 14 and an organic emitting layer 13 held therebetween, the organic emitting layer 13 containing one or more host materials, a hole trapping dopant and an electron trapping dopant. The lifetime of an organic EL device 1 can be improved by causing a hole-trapping dopant and an electron-trapping dopant to be together present in its organic emitting layer.

Abstract: An anthracene derivative with a specified asynmetrical type structure. An organic electroluminescence device which comprises at least one organic thin film layer including a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the anthracene derivative. An organic electroluminescence device which emits blue light of enhanced purity and has a long lifetime is provided.

Abstract: A white organic electroluminescent device (1) including an emitting layer (5, 6 and 7) interposed between an anode (2) and a cathode (9), the emitting layer (5, 6 and 7) emitting blue light, green light and red light, the emitting layer (6) containing a green dopant that is an aromatic amine compound represented by formula (1), wherein A1, A2 and R12 are a hydrogen atom, an alkyl group, an aryl group, a cycloalkyl group, an alkoxy group, an aryloxy group, an arylamino group, an alkylamino group or a halogen atom; d and e are independently 1 to 5; h is 1 to 9; R11 is a secondary or tertiary alkyl or cycloalkyl group; f is 1 to 9; g is 0 to 8 and f+g+h is 2 to 10.

Abstract: Provided is an organic electroluminescence device including one or two or more organic thin-film layers having at least a light emitting layer interposed between a negative electrode and a positive electrode, in which the light emitting layer contains a pyrene derivative of a specified structure and an amine compound of a specified structure. The organic electroluminescence device excels in heat resistance, ensures long life and high luminous efficiency, and is capable of emitting blue, green and red lights.

Abstract: An organic electroluminescent material-containing solution contains an organic electroluminescent material and a solvent. The organic electroluminescent material contains a host and a dopant the host contains an organic electroluminescence-functional portion A formed of a low-molecular organic electroluminescent material and a soluble portion B bonded to the organic electroluminescence-functional portion A for solubilizing the low-molecular organic electroluminescent material in the solvent, the host being represented by a formula of A-B-E (where E represents a terminal group). The portion A is a low-molecular organic electroluminescent material having a central anthracene skeleton. The portion B is formed by bonding structures represented by the following formula (3) with structure(s) represented by the following formula (4). Units represented by the formula (3) include bonds in ortho positions or meta positions while unit(s) represented by the formula (4) includes bonds in para positions.

Abstract: A benzothiophene derivative that having novel structure and an electroluminescence device which comprises a cathode, an anode and an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises the benzothiophene derivative described in claim 1 singly or as a component of a mixture. An electroluminescence device emitting blue light, exhibiting a great efficiency of light emission and having a long life can be obtained by using the derivative.

Abstract: Provided are a pyrene derivative of a specified structure and an organic electroluminescence device including an organic thin film layer formed of one or multiple layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the pyrene derivative alone or as a component of mixture. Thus, there are provided an organic electroluminescence device capable of obtaining long-life blue light emission with high luminous efficiency and a novel pyrene derivative for realization thereof.

Abstract: An organic electroluminescent material-containing solution contains an organic electroluminescent material and a solvent. The organic electroluminescent material contains a host and a dopant. The host includes: an organic electroluminescence-functional portion formed of a low-molecular organic electroluminescent material; and a soluble portion bonded to the organic electroluminescence-functional portion so as to solubilize the low-molecular organic electroluminescent material in the solvent. The soluble portion is a molecular chain formed by polymerizing basic units and the host is an oligomer.

Abstract: An organic EL material-containing solution contains an organic EL material, a solvent and a viscosity control agent. The organic EL material contains a host and a dopant. The host is a compound shown by Formula (1) below and has a solubility of 2 wt % or higher in the solvent. The solvent is an aromatic solvent, while the viscosity control agent is an alcohol type solution or an alkyl-substituted aromatic solution having 4 or more carbon atoms.

Abstract: A bisanthracene derivative having a specific structure in which two anthracene groups are bonded via a bonding group composed of naphthylene group and p-phenylene group, and an organic electroluminescence device having an organic thin film layer, which has one layer or a plurality of layers including at least a light emitting layer, is disposed between a cathode and an anode and contains the bisanthracene derivatives singly or as a component of a mixture are provided. The electroluminescence device has a long life.

Abstract: A benzanthracene derivative having hydrogen atom at the 12-position, and an organic electroluminescence device having an organic thin film layer, which has one layer or a plurality of layers including at least a light emitting layer, is disposed between a cathode and an anode and contains the benzanthracene derivative in at least one layer in the organic thin film layer singly or as a component of a mixture. The electroluminescence device provides a great efficiency of light emission, has a long life and exhibits an excellent chromaticity.