Abstract: A light-emitting element is disclosed, which comprises a substrate having provided thereon a pair of opposed electrodes between which are provided a light-emitting layer containing at least one light-emitting material selected from the compounds represented by the following general formula (I) and a host material, and which has an organic membrane having a larger ionization potential than that of the host material between the light-emitting layer and the cathode, with the organic membrane being in contact with the light-emitting layer: general formula (I) 1

Abstract: Disclosed is a material for a light emitting device excellent in color purity, good in light emitting characteristics and excellent in stability, which consists of a compound represented by the following general formula (I):

Abstract: Disclosed is a material for a light emitting device excellent in color purity, good in light emitting characteristics and excellent in stability, which consists of a compound represented by the following general formula (I): L&Parenopenst;A)m  (I) wherein A represents a heterocyclic group in which two or more aromatic heterocycles are condensed; m represents an integer of 2 or more, and the heterocyclic groups represented by A may be the same or different; and L represents a connecting group.

Abstract: A compound represented by general formula (113): wherein R1 and R2 each represents a hydrogen atom, an aliphatic hydrocarbon group, an aryl group or a heterocylic group; Z1 represents an atomic group necessary to form a heterocycle; L represents a connecting group; and X represents O, S, Se, Te or N—R, wherein R represents a hydrogen atom, an aliphatic hydrocarbon group; an aryl group or a heterocyclic group.

Abstract: Disclosed is a novel methine compound, for examples, which is represented by the following formula (I): 1

Abstract: Disclosed is a material for a light emitting device excellent in color purity, good in light emitting characteristics and excellent in stability, which consists of a compound represented by the following general formula (I):

Abstract: Disclosed is a novel methine compound, for examples, which is represented by the following formula (I): 1

Abstract: The present invention provides an organic EL element material which can emit light having a high color purity at a low driving voltage, a high luminescence and a high efficiency and exhibits an excellent stability in repeated use. A normal organic electroluminescence element material is provided which is a heterocyclic compound produced by the condensation of a 5- or 6-membered ring with a 5- to 7-membered ring.

Abstract: Disclosed are a luminescent element material comprising a polymer having a partial structure represented by formula (I) 1

Abstract: A material for a luminescence element is described, which is a compound having a partial structure represented by the following formula (I): wherein Q1 represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing aromatic heterocyclic ring; Q2 represents an atomic group necessary to form a 5- or 6-membered aromatic ring; X and Y each represents a carbon atom or a nitrogen atom; and Z represents SO2R1, COR2 or POR3 (R4) , wherein R1, R2, R3 and R4 each represents an aliphatic hydrocarbon group, an aryl group, a heterocyclic group, an amino group, an alkoxyl group, an aryloxy group or a heterocyclic oxy group.

Abstract: A novel methine compound which is represented by the following formula (I): wherein R1, R2, R3, R4 and R5 each represents a hydrogen atom or a substituent; X represents an oxygen atom, a sulfur atom, or N—R6; Z represents —NR7R8, or —OG; R6, R7 and R8 each represents a hydrogen atom or a substituent; G represents a hydrogen atom, a cation or a substituent; L1, L2 and L3 each represents a substituted or unsubstituted methine group; n represents 1 or 2; and W represents an electron attractive group. Also, a material for organic luminescence element and organic luminescence element using the same are disclosed.

Abstract: Disclosed is a material for a light emitting device excellent in color purity, good in light emitting characteristics and excellent in stability, which consists of a compound represented by the following general formula (I): L&Parenopenst;A)m  (I) wherein A represents a heterocyclic group in which two or more aromatic heterocycles are condensed; m represents an integer of 2 or more, and the heterocyclic groups represented by A may be the same or different; and L represents a connecting group.

Abstract: Disclosed is a novel methine compound, for example, which is represented by the following formula (I): wherein R1, R2, R3, R4 and R5 each represents a hydrogen atom or a substituent; X represents an oxygen atom, a sulfur atom, or N—R6; Z represents —NR7R8, or —OG; R6, R7 and R8 each represents a hydrogen atom or a substituent; G represents a hydrogen atom, a cation or a substituent; L1, L2 and L3 each represents a substituted or unsubstituted methine group; n represents 1 or 2; and W represents an electron attractive group.

Abstract: An organic luminescent device material which is a compound represented by the following formula (I): Formula (I) wherein V, W, X and Y each represents L1—NR1R2, wherein R1 and Rz each represents an aliphatic hydrocarbon group, an aryl group or a heterocyclic group, R1 and R2 may be combined directly or indirectly to form a ring, and L1 represents a divalent linking group containing an aryl group and/or an aromatic heterocyclic group.

Abstract: A compound for a luminous device represented by (I), (I-a), (III) or (I′):

Abstract: A light-emitting device comprising: a pair of electrodes formed on a substrate; and organic compound layers provided in between the electrodes, wherein the organic compound layers comprises a light-emitting layer comprising a hole-transporting material and a phosphorescent compound and an electron-transporting layer comprising an electron-transporting material, and an ionization potential of the electron-transporting material is 5.9 eV or more or wherein the organic compound layers comprises a hole-transporting layer comprising a hole-transporting material, a light-emitting layer comprising a phosphorescent compound and an electron-transporting layer comprising an electron-transporting material, and an ionization potential of the electron-transporting material is 5.9 eV or more.

Abstract: A luminescent element material comprising a polymer having a partial structure represented by formula (I): and a luminescent element using the same.

Abstract: A light-emitting device comprising a pair of electrodes formed on a substrate, and organic compound layers comprising a light-emitting layer provided in between the electrodes, wherein at least one of the organic compound layers comprises a heterocyclic compound having at least two hetero atoms and a phosphorescent compound.

Abstract: The present invention provides an organic light-emitting device material such as electron-transporting material and light-emitting material capable of emitting light having a high luminance and color purity. A novel organic light-emitting material is provided comprising a compound having a partial structure represented by the following general formula (I): wherein R11 and R12 each represent a hydrogen atom or substituent, with the proviso that R11 and R12 are not bonded to form a benzo condensed ring; X1 represents an oxygen atom, a sulfur atom, a substituted or unsubstituted nitrogen atom or —C(R13)R14—; R13 and R14 each represent a hydrogen atom or a substituent; Y1 represents an oxygen atom, a sulfur atom or a substituted or unsubstituted nitrogen atom; M1 represents a metal ion or a hydrogen atom; and Z1 represents an atomic group required to form a 5- or 6-membered ring.

Abstract: The present invention relates to a light emitting element comprising at least a light emitting layer containing a light emitting material and a host material and having a light emission maximum wavelength of 500 nm or less wherein the minimum excitation triplet energy level of the host material is higher than the minimum excitation triplet energy level of the light emitting material.