Abstract: An organic light emitting element contains an anode and a cathode, and a light emitting layer arranged between the anode and the cathode, and the organic light emitting element further contains an organic compound layer which is arranged between the cathode and the light emitting layer, and touches the cathode. The organic compound layer contains an organic compound represented by the following general formula [1], where R1 to R4 represent substituents.

Abstract: An organic light emitting element contains an anode and a cathode, and a light emitting layer arranged between the anode and the cathode. The organic light emitting element further contains an organic compound layer which is arranged between the cathode and the light emitting layer and touches the cathode. The organic compound layer contains a bisimidazolidene compound represented by the following general formula [1], where R1 to R12 represent substituents.

Abstract: An organic compound has a dibenzo[8,9:10,11]tetrapheno[5,6-b]carbazole skeleton as a basic skeleton. An organic light-emitting device includes an anode, a cathode, and an organic compound layer including the organic compound. A display apparatus includes a plurality of pixels, and each of the pixels includes the organic light-emitting device and a transistor. An image display system includes an input section and a display section including the display apparatus. A lighting apparatus includes the organic light-emitting device and an inverter circuit. An electrophotographic image-forming apparatus includes a light source including a plurality of the organic light-emitting devices and a photosensitive member.

Abstract: An organic compound contains 8H-naphth[2,1-b]carbazole as the basic skeleton thereof. An organic light-emitting element includes an organic compound layer containing the organic compound. A display device and an image display unit each include the organic light-emitting element. The organic light-emitting element is also used in a lighting device and an image forming apparatus.

Abstract: An organic electroluminescence element includes organic compound layers disposed between electrodes, the concentration of halogen atoms contained in organic compounds of the organic compound layers being 1 ppm or less according to combustion ion chromatography.

Abstract: A method for producing a compound according to the present invention includes synthesizing a compound represented by general formula (3): R—Ar1—X1, which is an intermediate a, by subjecting a compound represented by general formula (1): Ar1—X1 and an alkyl bromide represented by general formula (2): R—Br to an alkylation reaction, using aluminum bromide as a catalyst; synthesizing a compound represented by general formula (4): R—Ar1—X2, which is an intermediate b, from the compound represented by general formula (3); and synthesizing a compound represented by general formula (5): R—Ar1—Ar2 from the compound represented by general formula (4).

Abstract: Provided are an organic electroluminescence device whose wavelength of light emission is short and which can emit blue light having a high color purity, and a metal complex compound for realizing the device. The metal complex compound is of a specific structure having a partial structure including two tridentate ligands. The organic electroluminescence device includes: a pair of electrodes; and an organic thin film layer which has one layer or a plurality of layers including at least a light emitting layer and is disposed between the pair of electrodes. In the organic electroluminescence device, at least one layer of the organic thin film layer contains the metal complex compound. The organic electroluminescence device emits light by applying a voltage between both the electrodes.

Abstract: An organic blue-light-emitting device having a high emission efficiency and a long continuous driving lifetime is provided. An organic light-emitting device 20 includes an anode 2, a cathode 5, and a stacked body which is interposed between the anode 2 and the cathode 5 and includes at least a layer which forms a light-emitting region (emission layer 6).

Abstract: An organic electroluminescence element includes organic compound layers disposed between electrodes, the concentration of halogen atoms contained in organic compounds of the organic compound layers being 1 ppm or less according to combustion ion chromatography.

Abstract: Provided are an organic electroluminescence device which: can emit blue light having a short wavelength and a high color purity; and can be combined with any other light emitting compound to emit white light and a metal complex compound for realizing the device. The metal complex compound is of a specific structure having a tridentate chelate ligand and an electron withdrawing group. The organic electroluminescence device has an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a pair of electrodes. In the organic electroluminescence device, at least one layer of the organic thin film layer contains the metal complex compound, and emits light by applying a voltage between both the electrodes.

Abstract: Provided are an organic electroluminescence device which: can emit blue light having a short wavelength and a high color purity; and can be combined with any other light emitting compound to emit white light and a metal complex compound for realizing the device, and a material for an organic electroluminescence device. The metal complex is of a specific structure having a tridentate chelate ligand and an electron withdrawing group. The material for an organic electroluminescence device is formed of the metal complex compound. The organic electroluminescence device has an organic thin film layer formed of one or more layers including at least a light emitting layer, the organic thin film layer being interposed between a pair of electrodes. In the organic electroluminescence device, at least one layer of the organic thin film layer contains the metal complex compound, and emits light by applying a voltage between both the electrodes.

Abstract: Provided are an organic electroluminescence device whose wavelength of light emission is short and which can emit blue light having a high color purity, and a metal complex compound for realizing the device. The metal complex compound is of a specific structure having a partial structure including two tridentate ligands. The organic electroluminescence device includes: a pair of electrodes; and an organic thin film layer which has one layer or a plurality of layers including at least a light emitting layer and is disposed between the pair of electrodes. In the organic electroluminescence device, at least one layer of the organic thin film layer contains the metal complex compound. The organic electroluminescence device emits light by applying a voltage between both the electrodes.