Abstract: A novel binuclear metal complex containing a biimidazole as a bridging ligand. The binuclear metal complex can be used as a material for an organic electroluminescence element.

Abstract: The present invention relates to a binuclear ruthenium complex dye represented by the following general formula (1-1): wherein R01 represents a linear or branched alkyl group having 2 to 18 carbon atoms; X represents a counter ion; and n represents a number of the counter ions needed to neutralize a charge of the complex; and in which proton(s) (H+) of one or more carboxyl groups (—COOH) may dissociate.

Abstract: The present invention relates to a binuclear ruthenium complex dye having a higher absorption coefficient and capable of absorbing light of longer wavelength for realizing a photoelectric conversion element and a photochemical cell which may convert solar light into electricity over a wide wavelength range and exhibit high photoelectric conversion efficiency; and a binuclear ruthenium complex dye for realizing a photoelectric conversion element and a photochemical cell which may have high durability.

Abstract: A novel binuclear metal complex containing a biimidazole as a bridging ligand. The binuclear metal complex can be used as a material for an organic electroluminescence element.

Abstract: The present invention relates to a binuclear ruthenium complex dye having a higher absorption coefficient and capable of absorbing light of longer wavelength for realizing a photoelectric conversion element and a photochemical cell which may convert solar light into electricity over a wide wavelength range and exhibit high photoelectric conversion efficiency; and a binuclear ruthenium complex dye for realizing a photoelectric conversion element and a photochemical cell which may have high durability.

Abstract: The present invention relates to a binuclear ruthenium complex dye having a substituted bipyridyl group and represented by the general formula (1): wherein R1, R2, R3 and R4 each independently represents a linear or branched alkyl group having 1 to 30 carbon atoms, with the proviso that at least one of R1 and R2 represents a linear or branched alkyl group having 10 to 30 carbon atoms and at least one of R3 and R4 represents a linear or branched alkyl group having 10 to 30 carbon atoms; X represents a counter ion; n represents a number of the counter ions needed to neutralize a charge of the complex; and proton(s) (H+) of one or more carboxyl groups (—COOH) may dissociate.

Abstract: The photochemical cell of the present invention comprises a semiconductor particle sensitized with a binuclear metal complex dye, which has a high absorption coefficient and an excellent electron transfer property, and an electrolyte solution comprising an ionic liquid as the major component. The photochemical cell is superior in durability.

Abstract: The present invention relates to a binuclear ruthenium complex dye represented by the following general formula (1-1): wherein R01 represents a linear or branched alkyl group having 2 to 18 carbon atoms; X represents a counter ion; and n represents a number of the counter ions needed to neutralize a charge of the complex; and in which proton(s) (H+) of one or more carboxyl groups (—COOH) may dissociate.

Abstract: A novel binuclear metal complex according to the present invention is an asymmetric binuclear metal complex represented by the general formula: (L1)2M1(BL)M2(L2)2(X)n, wherein M1 and M2, which may be identical or different, represent a transition metal; L1 and L2, which are different, represent a chelate ligand capable of polydentate coordination and two L1s may be different and two L2s may be different; BL represents a bridge ligand having at least two heteroatom-containing cyclic structures, the heteroatoms contained in the cyclic structures being ligand atoms coordinating to M1 and M2; X represents a counter ion; and n is the number of counter ions needed to neutralize the charge of the complex. And the binuclear metal complex is useful as a metal complex dye.

Abstract: Disclosed is a process for production of an asymmetric binuclear metal complex represented by the general formula: (L1)2M1(BL)M2(L2)2(X)n wherein M1 and M2, which may be the same as or different from each other, represent a transition metal; L1 and L2, which are different from each other, represent a chelate ligand capable of multidentate coordination and two L1s may be different from each other and two L2s may be different from each other; BL represents a bridging ligand having at least two cyclic structures each containing a hetero atom, the hetero atoms contained in the cyclic structures being ligand atoms coordinating to M1 and M2; X represents a counter ion; and n is the number of counter ions needed to neutralize the charge of the complex. In the process, the binuclear metal complex is isolated by adjusting the pH of the solution containing the binuclear metal complex to a value higher than 2.5.

Abstract: A novel binuclear metal complex according to the present invention is an asymmetric binuclear metal complex represented by the general formula: (L1)2M1(BL)M2(L2)2(X)n, wherein M1 and M2, which may be identical or different, represent a transition metal; L1 and L2, which are different, represent a chelate ligand capable of polydentate coordination and two L1s may be different and two L2s may be different; BL represents a bridge ligand having at least two heteroatom-containing cyclic structures, the heteroatoms contained in the cyclic structures being ligand atoms coordinating to M1 and M2; X represents a counter ion; and n is the number of counter ions needed to neutralize the charge of the complex. And the binuclear metal complex is useful as a metal complex dye.