Abstract: Provided is a material for an organic electroluminescence device, which is composed of a compound having a specific structure; and is capable of providing an organic electroluminescence device having a high luminous efficiency, excellent heat resistance, and a long lifetime while having no pixel defects, and an organic electroluminescence device using the same. The organic electroluminescence device comprises an organic thin film layer composed of one or more layers including at least a light-emitting layer and sandwiched between a cathode and an anode. In the organic electroluminescence device, at least one layer of the organic thin film layer comprises the material for an organic electroluminescence device.

Abstract: A compound for obtaining an organic electroluminescence device having a long life of light emission and exhibiting excellent heat resistance is provided. The compound is a host material for organic electroluminescence devices comprising a carbazole derivative.

Abstract: An organic electroluminescent device (1) comprising: an anode (20), a cathode (70) and a plurality of layers comprising at least a hole-injecting-transporting layer (30) in contact with the anode (20) and an emitting layer. (40), the plurality of layers being provided between the anode (20) and the cathode (70), a difference in ionization potential between the hole-injecting-transporting layer (30) and the anode (20) being more than 0.7 eV.

Abstract: An aromatic compound represented by a following general formula (1), wherein R1 to R14 each independently represents any one selected from a group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 40 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 40 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 40 carbon atoms, a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 40 carbon atoms; at least one of R1 to R9 represents a substituted or unsubstituted aryl group having 6 to 40 carbon atoms; and at least one of R10 or R14 represents a substituted or unsubstituted aryl group having 6 to 40 carbon atoms. A compound for obtaining an organic EL device having an enhanced efficiency of light emission and a prolonged half lifetime of brightness is provided.

Abstract: An organic electroluminescent device (1) including an anode (2), a cathode (6), and at least a first layer (3), a second layer (4), and a third layer (5) provided between the anode (2) and the cathode (6). At least one of the first to third layers (3), (4), and (5) includes a phosphorescent compound, and at least one of the first to third layers (3), (4), and (5) is an emitting layer. Compounds respectively forming the first to third layers (3), (4), and (5) and having the largest ionization potentials of the respective layers have an ionization potential of 5.7 eV or more and differ in the ionization potential in an amount of less than 1.0 eV.

Abstract: An organic electroluminescent device (1) including an anode (2), a cathode (6), and at least a first layer (3), a second layer (4), and a third layer (5) provided between the anode (2) and the cathode (6) in that order from the anode side. At least one of the first to third layers (3), (4), and (5) includes a phosphorescent compound. At least one of the first to third layers (3), (4), and (5) is an emitting layer. At least three compounds respectively forming the first layer (3), the second layer (4), and the third layer (5) other than the phosphorescent compound are compounds of the following formula (1). wherein R1 to R7 each represent a hydrogen atom or a substituent, provided that adjacent substituents may form a ring.

Abstract: A novel compound having a spiro bond with a specific structure, a material for forming a luminous coated film comprising the compound having the spiro bond with the specific structure, and an organic electroluminescence device which comprises at least one organic thin film layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein the organic thin film layer comprises the compound having the spiro bond. The organic EL device employing either the compound having a spiro bond or the material for forming luminous coated film in accordance with the present invention is superior in heat resistance, has stability of the thin film composing the device, emits uniform blue light, and exhibits an excellent luminance, current efficiency even under a low driving voltage.

Abstract: An organic electroluminescent device (1) including: an anode (10) and a cathode (30), and an emitting layer (20) including an anode-side region (22), an internal region (24) and cathode-side region (26) provided between the anode (10) and the cathode (30); each of the regions (22), (24) and (26) including a host compound of an organic material and a dopant of a metal complex containing a heavy metal and exhibiting light emitting properties originated from a triplet state; the dopant concentration of the internal region (24) being higher than the dopant concentrations of the anode-side region (22) and the dopant concentration of the cathode-side region (24).

Abstract: A coordination metal compound comprising cordinating at least one ligand having a Spiro bond to at least a metal atom; a material for an organic electroluminescence (EL) device, and an organic EL device comprising at least one organic thin film layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein at least one organic thin film layer thereof comprises the coordination metal compound or the material for an organic EL device, and a material for luminescence coating formation comprising an organic solvent solution containing the coordination metal compound or the material for the organic EL device is provided.

Abstract: An organic electroluminescence device which exhibits an excellent purity of color and a high efficiency of light emission, has a long life and emits reddish light and a novel compound having these characteristics are provided. The organic electroluminescence device comprises an organic layer disposed between at least one pair of electrodes, wherein the organic layer comprises a compound having a fluoranthene skeleton structure substituted at least with an amine group or an alkenyl group.

Abstract: Materials for organic electroluminescence devices are represented by following general formula [1]: wherein A represents a chrysene group, X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, a+b+c+d?0; general formula [2] being: wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.

Abstract: There are provided oligoarylene derivatives capable of emitting blue light at high luminous efficiency which are represented by the following general formulae (1) to (4): Ar1-Ch-Ar2 ??(1) Ch1-L-Ch2 ??(2) Ar3-(L1)a-Ch3-(L2)b-Ar4 ??(3) Ar5-Ch4-(Ar7)n-L3-(Ar8)m-Ch5-Ar6 ??(4) wherein Ch, Ch1 and Ch2 are respectively a group containing at least one substituted or unsubstituted condensed aromatic ring having 14 to 20 nuclear atoms; Ch3, Ch4 and Ch5 are respectively a substituted or unsubstituted arylene group having 14 to 20 nuclear atoms; Ar1, Ar2, Ar3, Ar4, Ar5 and Ar6 are respectively a substituted or unsubstituted aryl group having 5 to 30 nuclear atoms; Ar7 and Ar8 are respectively a substituted or unsubstituted arylene group having 5 to 30 nuclear atoms; L1, L2 and L3 are respectively a connecting group; and a, b, n and m are respectively an integer of 0 to 1, as well as organic electroluminescent devices using the same.

Abstract: A compound having a of the present invention has the diphenylanthracene structure at the center and a specific structure substituted with an aryl group at end portions. An organic electroluminescence device comprises a plurality of layers of thin films of organic compounds which comprise a light emitting layer or a plurality of layers comprising a light emitting layer and are disposed between a pair of electrodes and at least one of the layers of thin films of organic compounds comprises the above compound. The compound exhibits excellent efficiency of light emission and heat resistance, has a long life and emits bluish light having excellent purity of color and the organic electroluminescence device comprises the compound and exhibits the same advantageous properties.

Abstract: The novel compound of the present invention has the diphenylanthracene structure at the center and a specific structure substituted with an aryl group at end portions. The organic electroluminescence device of the present invention comprises a plurality of layers of thin films of organic compounds which comprise a light emitting layer or a plurality of layers comprising a light emitting layer and are disposed between a pair of electrodes and at least one of the layers of thin films of organic compounds comprises the above novel compound. The novel compound exhibits excellent efficiency of light emission and heat resistance, has a long life and emits bluish light having excellent purity of color and the organic electroluminescence device comprises the novel compound and exhibits the same advantageous properties.

Abstract: An organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer comprising at least one layer comprising a light emitting layer and disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises an anthracene derivative having a specific structure singly or as a component of a mixture, and an anthracene derivative having a specific asymmetric structure and providing an organic electroluminescence device exhibiting a great efficiency of light emission and having a long life, are provided.

Abstract: An organic electroluminescence device which exhibits an excellent purity of color and a high efficiency of light emission, has a long life and emits reddish light and a novel compound having these characteristics are provided. The organic electroluminescence device comprises an organic layer disposed between at least one pair of electrodes, wherein the organic layer comprises a compound having a fluoranthene skeleton structure substituted at least with an amine group or an alkenyl group.

Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electro-luminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.

Abstract: An organic electroluminescence device comprising a pair of electrodes and a layer of an organic light emitting medium disposed between the pair of electrodes, wherein the layer of an organic light emitting medium comprises a mixed layer comprising (A) at least one hole transporting compound and (B) at least one electron transporting compound, an energy gap of the hole transporting compound represented by Eg1 and an energy gap of the electron transporting compound represented by Eg2 satisfy a relation: Eg1<Eg2. Electrons and holes are recombined in the layer of an organic light emitting medium and light is emitted. The organic electroluminescence device has a long life and emits light at a high efficiency.

Abstract: Materials for organic electroluminescence devices represented by following general formula [1]: wherein A represents a substituted or unsubstituted arylene group having 22 to 60 carbon atoms, X1 to X4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X1 and X2 may be bonded to each other, X3 and X4 may be bonded to each other, Y1 to Y4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, when the arylene group represented by A has 26 or less carbon atoms, a+b+c+d>0 and the arylene group does not contain two or more anthracene nucleus; general formula [2] being: wherein R1 to R4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R1 and R2 or R3 and R4, Z represents a substituted or unsu

Abstract: A novel aromatic compound having an anthracene skeleton structure and an asymmetric molecular structure; and an organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer comprising at least one layer containing a light emitting layer and sandwiched between the cathode and the anode in which at least one layer in the organic thin film layer contains the above novel aromatic compound singly or as a component of a mixture. The organic electroluminescence device exhibits a great luminance of emitted light, a great efficiency of light emission and a high purity of color, emits bluish light, is excellent in stability at high temperatures and has a long life. The organic electroluminescence device can be provided by utilizing the novel aromatic compound.