Abstract: A metal complex which is useful for production of a light emitting device showing improved luminance is provided. A composition containing the metal complex and a light emitting device containing the metal complex are also provided. The metal complex is represented by the following formula (0). The composition contains the metal complex and at least one material selected from the group consisting of a host material, a light emitting material other than the metal complex, an antioxidant and a solvent, and a light emitting device containing the metal complex.

Abstract: A compound with which the luminance life of a light emitting device is excellent is represented by formula (1): n represents an integer of 2 or more and 20 or less, R1 and R2 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group or a halogen atom. Ar1 represents a mono-cyclic or condensed-cyclic arylene group, a mono-cyclic or condensed-cyclic divalent heterocyclic group or a group represented by —N(RX1)—, and RX1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or a monovalent heterocyclic group. At least two of Ar1 represent prescribed groups.

Abstract: Light-Emitting Compound A composition comprising a light-emitting compound having a peak wavelength of at least 650 nm and a material comprising a group of formula (I): wherein Ar1, Ar2 and Ar3 in each occurrence are independently selected from a C6-20 aromatic group and a 6-20 membered heteroaromatic group of C and N ring atoms and at least one of Ar1, Ar2 and Ar3 is a 6-20 membered heteroaromatic group of C and N ring atoms; x, y and z are each independently at least 1; n, m and p are each independently 0 or a positive integer; and R1, R2 and R3 in each occurrence is independently a substituent or a single bond to a polymer chain, wherein the group of formula (I) has no more than 3 single bonds to a polymer chain. The composition may be used in the light-emitting layer of an infrared organic light-emitting device.

Abstract: A light emitting device contains an anode, a cathode, and two organic layer respectively containing metal complexes represented by formulas (1) and (2). M1 and M2 represent an iridium atom; n1 and n3 represent an integer of 1 or more; n2 and n4 represent an integer of 0 or more; Ring R1A represents a triazole ring; Ring R2 represents an aromatic hydrocarbon ring; E1, E2 and E11A to E13A represent a nitrogen or a carbon atom; R11A to R13A represent a substituent. At least one of E11A to E13A is a nitrogen atom, and at least one of R11A to R13A bonding to the nitrogen atom is a group represented by (Ar-1A). EL represents a carbon atom; Ring L1 represents a 6-membered aromatic hetero ring; Ring L2 represents an aromatic hydrocarbon ring; and A1-G1-A2 and A3-G2-A4 represent bidentate ligands. Ring A represents an aromatic hydrocarbon ring with substituent R2.

Abstract: A metal complex is represented by the formula (1): In formula (1), M represents Ir or Pt, n1 represents 1 to 3, n2 represents 0 to 2, A1-G1-A2 represents an anionic bidentate ligand, m1 and m2 represent 3 or 4, E1 to E4 represent a nitrogen atom or a carbon atom, R1 and R2 represent a substituent, R1 and/or R2 is represented by formula (2-1) or formula (2-2), Ring A represents an aromatic heterocyclic ring, Ring B represents an aromatic hydrocarbon ring or an aromatic heterocyclic ring, and R3, R3a, R4a, R5 and R6 represent a substituent:

Abstract: Provided is a metal complex which is excellent in quantum yield and full width at half maximum of a light emission spectrum. The metal complex is represented by the following formula (1): wherein M represents an iridium atom or the like, n1 represents 1 to 3, n2 represents 0 to 2, X1 to X8 represent a carbon atom or the like, R1 to R8 represent a hydrogen atom or the like, one of Xa and Xb is a single bond, and the other is a group represented by —CR11R12—CR13R14—, R11 to R14 represent an alkyl group or the like, ring A represents a heteroaromatic ring, and A1-G1-A2 represents an anionic bidentate ligand.

Abstract: Light-Emitting Compound A composition comprising a light-emitting compound having a peak wavelength of at least 650 nm and a material comprising a group of formula (I): wherein Ar1, Ar2 and Ar3 in each occurrence are independently selected from a C6-20 aromatic group and a 6-20 membered heteroaromatic group of C and N ring atoms and at least one of Ar1, Ar2 and Ar3 is a 6-20 membered heteroaromatic group of C and N ring atoms; x, y and z are each independently at least 1; n, m and p are each independently 0 or a positive integer; and R1, R2 and R3 in each occurrence is independently a substituent or a single bond to a polymer chain, wherein the group of formula (I) has no more than 3 single bonds to a polymer chain. The composition may be used in the light-emitting layer of an infrared organic light-emitting device.

Abstract: A light emitting device comprising an anode, a cathode, a first light emitting layer between the anode and the cathode, and a second light emitting layer between the anode and the cathode is provided. The first light emitting layer comprises a metal complex represented by formula (1): In formula (1), M1 represents an iridium atom, n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3, ring R1A represents a triazole ring containing a nitrogen atom, E1, E11A, E12A, and a carbon atom, ring R2 represents an aromatic hydrocarbon ring, E1, E2, E11A, and E12A each represent a nitrogen atom, R11A and R12A represent an aryl group, R13A represents an aryl group, A1-G1-A2 represents an anionic bidentate ligand, A1 and A2 each represent a nitrogen atom, and G1 represents a single bond.

Abstract: A metal complex represented by the following formula (1) is provided. In formula (1), M represents an iridium atom or a platinum atom; n1 represents 1, 2 or 3. n2 represents 0, 1 or 2; E1 to E4 represent a nitrogen atom or a carbon atom; R1 to R10 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryl group, an aryloxy group, a monovalent heterocyclic group or a halogen atom; Xa and Xb represent a direct bond, an oxygen atom, a sulfur atom, —C(?O)—, —CRXa2— or —NRXa—; A1-G1-A2 represents an anionic bidentate ligand; and G1 represents an atomic group constituting a bidentate ligand together with A1 and A2.

Abstract: A high-molecular compound including a group indicated by general formula (11) as a repeating unit. In formula (11) n1 indicates an integer of 1-3. Ar1 indicates an arylene group, a divalent aromatic heterocyclic group, or a divalent aromatic amine residue, and these groups may have a substituent group. If there is a plurality of Ar1, the Ar1 can be the same or can be different. R11 indicates a hydrogen atom, an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, or an aralkyl group, and said groups may have a substituent group. The plurality of R11 can be the same or can be different. However, at least three of the R11 are an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, or an aralkyl group.

Abstract: A polymer compound has a repeating unit represented by general formula (1): wherein R1a represents an alkyl group, an aryl group, a monovalent aromatic heterocyclic group or an aralkyl group, each possibly substituted and the same or different; and X1a represents a group selected from formulae (1a) to (1c).] wherein R1c represents an aryl group or a monovalent aromatic heterocyclic group, possibly substituted; and R1d to R1f represent each independently an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group; and the pairs R1d and R1e, R1f and R1g, R1d and R1f, and R1e and R1g may be mutually linked to form a ring together with a carbon atom to which they are linked.

Abstract: Provided is a metal complex which is excellent in quantum yield and full width at half maximum of a light emission spectrum. The metal complex is represented by the following formula (1): wherein M represents an iridium atom or the like, n1 represents 1 to 3, n2 represents 0 to 2, X1 to X8 represent a carbon atom or the like, R1 to R8 represent a hydrogen atom or the like, one of Xa and Xb is a single bond, and the other is a group represented by —CR11R12—CR13R14—, R11 to R14 represent an alkyl group or the like, ring A represents a heteroaromatic ring, and A1-G1-A2 represents an anionic bidentate ligand.

Abstract: It is an object of the present invention to provide a composition using a polymer compound, which is useful for manufacturing a blue phosphorescent light-emitting device excellent in luminous efficiency. The present invention provides a composition including: a polymer compound substantially consisting of a constitutional unit selected from a constitutional unit represented by Formula (1)-1 below, a constitutional unit represented by Formula (1)-2 below, a constitutional unit represented by Formula (2)-1 below, a constitutional unit represented by Formula (2)-2 below, and a constitutional unit derived from a phosphorescent light-emitting compound having a light-emitting spectrum peak at smaller than 480 nm and the polymer compound containing at least both of the constitutional unit represented by Formula (1)-1 and the constitutional unit represented by Formula (1)-2; and a phosphorescent light-emitting compound having a light-emitting spectrum peak at smaller than 480 nm.

Abstract: Provided is a metal complex excellent in light emission stability. The metal complex is represented by the formula (1): wherein M represents an iridium atom or the like, n1 represents an integer of 1 to 3, n2 represents an integer of 0 to 2, E2 to E4 represent a nitrogen atom or a carbon atom where two selected from among E2 to E4 are nitrogen atoms and the remaining one is a carbon atom, R1 represents an aryl group or the like, R2 and R3 represent a hydrogen atom, an alkyl group, an aryl group or the like, the ring B represents a triazole ring, the ring A represents an aromatic hydrocarbon ring or the like, and A1-G1-A2 represents an anionic bidentate ligand.

Abstract: A metal complex represented by the formula (1): wherein M represents an iridium atom or a platinum atom, n1 represents 1 to 3, n2 represents 0 to 2, A1-G3-A2 represents an anionic bidentate ligand, m3 and m2 represent 3 or 4, E3 to E4 represent a nitrogen atom or a carbon atom, R1 and R2 represent a substituent and the like, and at least one of R1 and R2 is a group represented by the formula (2-1) or a group represented by the formula (2-2), Ring A represents an aromatic heterocyclic ring, and Ring B represents an aromatic hydrocarbon ring or an aromatic heterocyclic ring: wherein R3, R3a, R4a, R5 and R6 represent a substituent and the like.

Abstract: A metal complex represented by the following formula (1) is provided. In formula (1), M represents an iridium atom or a platinum atom; n1 represents 1, 2 or 3. n2 represents 0, 1 or 2; E1 to E4 represent a nitrogen atom or a carbon atom; R1 to R10 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryl group, an aryloxy group, a monovalent heterocyclic group or a halogen atom; Xa and Xb represent a direct bond, an oxygen atom, a sulfur atom, —C(?O)—, —CRXa2— or —NRXa—; A1-G1-A2 represents an anionic bidentate ligand; and G1 represents an atomic group constituting a bidentate ligand together with A1 and A2.

Abstract: A polymer compound is provided for achieving satisfactory brightness even at a low driving voltage when applied to a light-emitting device. A preferred embodiment includes multiple first groups and a block (A) having a structure in which the first groups are linked by a second group represented by formula (0-0), and includes at least one of a group represented by formula (0-1) or a group represented by formula (0-2) as the first group; wherein Ar0 represents an optionally substituted arylene group or divalent aromatic heterocyclic group having a structure different from the first group; n represents an average chain length of Ar0 and equals 1.0 to 8.0; and X11 to X16 and X21 to X25 each represent a carbon atom or a nitrogen atom, where two or three of X11 to X16 are a nitrogen atom and three of X21 to X25 are a nitrogen atom.

Abstract: A method for producing an aromatic polymer comprising polycondensing an aromatic compound of the following formula (I) in the presence of a palladium complex containing a phosphine compound of the following formula (II): (wherein, Ar represents an aromatic ring-containing bi-functional organic group. X represents a halogen atom, nitro group or group of the formula —SO3Q (wherein, Q represents an optionally substituted hydrocarbon group). Y represents an oxygen atom, sulfur atom or the like, and n represents 0 or 1. M represents a hydrogen atom, —B(OQ1)2 or the like (Q1 represents a hydrogen atom or hydrocarbon group.

Abstract: A polymer compound comprising a constitutional unit represented by the following formula (2) and a constitutional unit represented by the following formula (1), wherein R1 represents an alkyl group or the like, and R2 and R3 each independently represent a hydrogen atom or the like, —Ar1—??(2) wherein Ar1 represents an arylene group or the like. A hydrogen atom in the group represented by Ar1 may be substituted by an alkyl group, aryl group or the like.

Abstract: A high-molecular compound including a group indicated by general formula (11) as a repeating unit. In formula (11) n1 indicates an integer of 1-3. Ar1 indicates an arylene group, a divalent aromatic heterocyclic group, or a divalent aromatic amine residue, and these groups may have a substituent group. If there is a plurality of Ar1, the Ar1 can be the same or can be different. R11 indicates a hydrogen atom, an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, or an aralkyl group, and said groups may have a substituent group. The plurality of R11 can be the same or can be different. However, at least three of the R11 are an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, or an aralkyl group.