Abstract: A light emitting device having excellent luminance life contains an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode. The first organic layer contains a compound represented by the formula (C-1), and the second organic layer contains a compound represented by the formula (C-1) and a cross-linked body of a crosslinkable material. Ring R1C and Ring R2C represent an aromatic hydrocarbon ring or an aromatic hetero ring and RC represents an oxygen atom, a sulfur atom or a group represented by the formula (C?-1). Ring R3C and Ring R4C represent an aromatic hydrocarbon ring or an aromatic hetero ring and RC? represents a carbon atom, a silicon atom, a germanium atom, a tin atom or a lead atom.

Abstract: A light emitting device having excellent luminance life contains an anode, a cathode, a first organic layer disposed between the anode and the cathode and a second organic layer disposed between the anode and the cathode. The first organic layer contains a compound represented by the formula (C-1), and the second organic layer contains a compound represented by the formula (C-1) and a cross-linked body of a crosslinkable material. Ring R1C and Ring R2C represent an aromatic hydrocarbon ring or an aromatic hetero ring and RC represents an oxygen atom, a sulfur atom or a group represented by the formula (C?-1). Ring R3C and Ring R4C represent an aromatic hydrocarbon ring or an aromatic hetero ring and RC? represents a carbon atom, a silicon atom, a germanium atom, a tin atom or a lead atom.

Abstract: A light emitting device including an anode, a cathode, a light emitting layer disposed between the anode and the cathode, and a hole transporting layer disposed between the anode and the light emitting layer is described. The light emitting layer is a layer containing an iridium complex (A) and a heterocyclic compound constituted of typical elements (B), the hole transporting layer is a layer containing a crosslinked body of a crosslinkable material. The molecular weight (MA) of the iridium complex (A) and the molecular weight (MB) of the heterocyclic compound (B) satisfy the formula 2700?MA+MB?10000 (M1-1) and the formula 0.35?MA/MB?3.00 (M2-1).

Abstract: A light emitting device including an anode, a cathode, a light emitting layer disposed between the anode and the cathode, and a hole transporting layer disposed between the anode and the light emitting layer is described. The light emitting layer is a layer containing an iridium complex (A) and a heterocyclic compound constituted of typical elements (B), the hole transporting layer is a layer containing a crosslinked body of a crosslinkable material. The molecular weight (MA) of the iridium complex (A) and the molecular weight (MB) of the heterocyclic compound (B) satisfy the formula 2700?MA+MB?10000 (M1-1) and the formula 0.35?MA/MB?3.00 (M2-1).

Abstract: Disclosed is a metal complex represented by the following formula (1). In the formula, M represents a metal atom; R1-R8 respectively represent a hydrogen atom, a halogen atom or a monovalent group; or alternatively R3 and R4, or R5 and R6 may combine together to form a ring.

Abstract: A polymeric compound containing a residue of a metal complex represented by formula (1) [wherein M represents a metal atom selected from ruthenium, rhodium, palladium, osmium, iridium and platinum; R1, R2, R3, R4, R5, R6 and R8 independently represent a hydrogen atom, a halogen atom, an alkyl group, or the like; m represents an integer of 1 to 3; n represents an integer of 0 to 2; Z1, Z2, Z3, Z4 and Z5 independently represent a carbon atom or a nitrogen atom, provided that at least two member of Z1, Z2, Z3, Z4 and Z5 represent a nitrogen atom, and when any one member of Z1, Z2, Z3, Z4 and Z5 represents a carbon atom, a hydrogen atom bound to the carbon atom may be substituted by a substituent; a moiety represented by formula (2) represents a bidentate monoanionic ligand; and Rx and Ry are atoms bound to the metal atom M and independently represent a carbon atom, an oxygen atom or a nitrogen atom] and a bivalent group.

Abstract: A metal complex represented by the following formula (1): wherein R1 to R6, R8 and R11 to R20 represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, an aryl group, an aryloxy group, an arylthio group, an arylalkyl group, an arylalkoxy group, an arylalkylthio group, an acyl group, an acyloxy group, an amide group, an acid imide group, an imine residue, a substituted amino group, a substituted silyl group, a substituted silyloxy group, a substituted silylthio group, a substituted silylamino group, a monovalent heterocyclic group, a heteroaryloxy group, a heteroarylthio group, an arylalkenyl group, an arylalkynyl group, a substituted carboxyl group or a cyano group; Z1 to Z5 represent —C(R*)? or a nitrogen atom, wherein R* represents a hydrogen atom or a substituent, provided that at least two of Z1 to Z5 are nitrogen atoms; m represents 1 or 2.

Abstract: A polymeric compound containing a residue of a metal complex represented by formula (1) [wherein M represents a metal atom selected from ruthenium, rhodium, palladium, osmium, iridium and platinum; R1, R2, R3, R4, R5, R6 and R8 independently represent a hydrogen atom, a halogen atom, an alkyl group, or the like; m represents an integer of 1 to 3; n represents an integer of 0 to 2; Z1, Z2, Z3, Z4 and Z5 independently represent a carbon atom or a nitrogen atom, provided that at least two member of Z1, Z2, Z3, Z4 and Z5 represent a nitrogen atom, and when any one member of Z1, Z2, Z3, Z4 and Z5 represents a carbon atom, a hydrogen atom bound to the carbon atom may be substituted by a substituent; a moiety represented by formula (2) represents a bidentate monoanionic ligand; and Rx and Ry are atoms bound to the metal atom M and independently represent a carbon atom, an oxygen atom or a nitrogen atom] and a bivalent group.

Abstract: Disclosed is a metal complex which has a central metal (M) selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Pt, Au and Hg. The metal complex has no halogen unidentate ligand. In the metal complex, the sum total of the square values of the orbital coefficients of the outermost d orbitals of the central metal comprises ? or higher of the sum total of the square values of all of the atomic orbital coefficients in the highest occupied molecular orbital (HOMO) given by a computational scientific technique, the energy difference (S1?T1) between the minimum singlet excitation energy (S1) and the minimum triplet excitation energy (T1) given by a computational scientific technique falls within the range from 0.1 (eV) to 1.0 (eV) inclusive, and the oscillator strength (f) falls within the range from 0.005 and 1.0 inclusive.

Abstract: Disclosed is a metal complex represented by the following formula (1). In the formula, M represents a metal atom; R1-R8 respectively represent a hydrogen atom, a halogen atom or a monovalent group; or alternatively R3 and R4, or R5 and R6 may combine together to form a ring.