Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N]2M[P^O] comprising two orthometalated chelate C^N ligands and an ancillary ligand of bidentate phosphinocarboxylate type. It has been surprisingly found that when the metal has bound thereto both orthometalated chelate C^N ligands and an ancillary ligand of bidentate phosphinocarboxylate type (P^O), these ligands advantageously participate in the emission process, enabling appreciable improvement of the blue emission efficiency of complexes [C^N]2M[P^O]. Still objects of the invention are the use of such light emitting materials and organic light emitting device comprising such light emitting material.

Abstract: The present invention relates to light emitting materials comprising novel ortho-metalated transition metal complexes [C^N]2M[N^N] comprising two orthometalated ligands (C^N ligands) and a neutral bidentate bipyridine ligand (N^N). Surprisingly, it has been found that when the metal binds both orthometalated chelate C^N ligands and a neutral bidentate bipyridine ligand (N^N), these ligands participate in the emission process, thus greatly improving the red emission efficiency of complexes [C^N]2M[N^N]. The present invention further relates to the use of such light emitting materials and an organic light emitting device comprising such light emitting material.

Abstract: The present invention provides new bi- and polypyridine ligands of ruthenium dyes. The invention also provides solar cells, in particular dye-sensitized solar cells comprising the dyes.

Abstract: White light emitting material comprising a complex salt of the general formula [M1m+]x [M2n?]y wherein: x m=y n, [M13+] and [M2n?] are ionic light emitting moieties which have complementary emission spectra, one emitting in the blue region of the visible spectra and the other, in the red region of the visible spectra, and wherein at least one of M1 and M2 is a metallic complex.

Abstract: A light emitting material comprising a complex of formula (I): (L1)x-M-(L2)y wherein L1 is a mono-anionic bidentate carbon-coordinating ligand comprising the structural element (II) in a ring system, wherein R1 is a substituent selected from the group consisting of R1-1 to R1-8, the use thereof as emissive materials in organic light emitting devices, and organic light emitting devices comprising said emissive material.

Abstract: The present invention relates to novel pyridine compounds that can be used as anchoring ligands in metal-based sensitizing dyes of dye sensitized solar cells (DSCS). The dyes comprising the polypyridine compounds exhibit improved light harvesting ability and lead to increased conversion efficiencies, in particular in thin TiO2 film devices.

Abstract: Electro luminescent metal, e.g. Ir, complexes are disclosed. The metal complexes comprise at least one ligand L1 and at least one ligand L2, wherein ligand L1 is a 2-phenylpyridine ligand (I), comprising a phenyl ring (A) and a pyridine ring (B). The integers 2 to 9 denote positions in which substitutions can be made, and by the use of different substituents, e.g. 2,4-difluoro and 7-N(CH3)2, the emission wavelength of the complex may be tuned. The ligand L2 may e.g. be a compound of the following formula (II).

Abstract: The present invention relates to light emitting materials including a novel Ir complex, where the Ir is provided with a primary ligand selected from phenyl pyridine ligands substituted with at least one Cl atom. Such light emitting materials have been found to have a significantly enhanced photoluminescence quantum yield over other Ir complexes with a phenyl pyridine ligand having no Cl atom, or even over those with a phenyl pyridine ligand having a halogen atom other than Cl, such as a Br or F atom, and as a result specifically improve the efficiency of a light emitting device. The present invention further relates to the use of such light emitting materials and an organic light emitting device including such light emitting materials.

Abstract: Light emitting materials comprising multinuclear metal complexes comprising at least two metal atoms and a metal bridging ligand bound to said at least two metal atoms. It relates more particularly to a multinuclear complex of Formula (I): {-[L]2M-B-}n, wherein L is a bidentate ligand; M represents a transition metal having an atomic number of at least 40, and each M can be the same or different at each occurrence; B is a 2-connecting short metal bridging ligand bound to said at least two metal atoms, where the metal bridging ligand comprises coordinating atoms independently selected from the group consisting of nitrogen, phosphorous, carbon, oxygen, sulphur and selenium in 1,2 or 1,3 mutual position.(1,2-? or 1,3-? bonding mode); and n is an integer larger than 1.

Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C?N]2M[P?O] comprising two orthometalated chelate C?N ligands and an ancillary ligand of bidentate phosphinocarboxylate type. It has been surprisingly found that when the metal has bound thereto both orthometalated chelate C?N ligands and an ancillary ligand of bidentate phosphinocarboxylate type (P?O), these ligands advantageously participate in the emission process, enabling appreciable improvement of the blue emission efficiency of complexes [C?N]2M[P?O]. Still objects of the invention are the use of such light emitting materials and organic light emitting device comprising such light emitting material.

Abstract: The present invention relates to light emitting materials comprising novel ortho-metalated transition metal complexes [C?N]2M[N?N] comprising two orthometalated ligands (C?N ligands) and a neutral bidentate bipyridine ligand (N?N). Surprisingly, it has been found that when the metal binds both orthometalated chelate C?N ligands and a neutral bidentate bipyridine ligand (N?N), these ligands participate in the emission process, thus greatly improving the red emission efficiency of complexes [C?N]2M[N?N]. The present invention further relates to the use of such light emitting materials and an organic light emitting device comprising such light emitting material.

Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C?N]2ML comprising two orthometalated ligands having imidazole moieties and an ancillary ligand of ?-diketonate type. It has been surprisingly found that when the metal has bound thereto both ortho-metalated ligands comprising imidazole moieties and an ancillary ligand of ?-diketonate type, said ligands advantageously participate in the emission process, significantly broadening emission in the visible region and enabling appreciable improvement of the white emission efficiency of complexes [C?N]2ML. Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.

Abstract: Electro luminescent metal, e.g. Ir, complexes are disclosed. The metal complexes comprise at least one ligand L1 and at least one ligand L2, wherein ligand L1 is a 2-phenylpyridine ligand (I), comprising a phenyl ring (A) and a pyridine ring (B). The integers 2 to 9 denote positions in which substitutions can be made, and by the use of different substituents, e.g. 2,4-difluoro and 7-N(CH3)2, the emission wavelength of the complex may be tuned. The ligand L2 may e.g. be a compound of the following formula (II).

Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C?N]2ML, comprising chelate monoionic ligands (L), also called ancillary ligands. It has been surprisingly found that when the ancillary ligand comprises a substituted aromatic ring bearing a substituent possessing adequate electron-donating properties, said ligand (L) advantageously participates in the emission process, significantly shifting emission towards higher energies (blue-shift) and enabling appreciable improvement of the emission efficiency of complexes [C?N]2ML. Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.

Abstract: This invention pertains to light emitting materials comprising novel ortho-metalated transition metal complexes [C?N]2M(T)(L), comprising chelate dialkylamino-substituted C?N ligands, monodentate neutral ligand (L) having sp2 hybridized N atom and a monodentate anionic ligand (T) chosen among CN?, CNO?, CNS?. It has been surprisingly found that when the metal has bound thereto in addition to substituted orthometalated ligands, both an anion chosen among cyanide, thiocyanate, cyanate, possessing strong C donor and ? acceptor properties, and a monodentate neutral ligand L, as above defined, said ligands advantageously participate in the emission process, significantly shifting emission towards higher energies (blue-shift) and enabling appreciable improvement of the emission efficiency of complexes [C?N]2M(T)(L). Still objects of the invention are the use of said light emitting materials and organic light emitting device comprising said light emitting material.

Abstract: A metal complex represented by the formula: (X)nML1L2, (X)2M(L1)2 or (L1)2ML2 wherein M represents a Group VIII metal, X represents a polar group, L1 represents a phenanthroline containing at least one carboxyl group which may be neutralized, L2 represents a nitrogen-containing polycyclic compound which may contain one or more substituents, and n is an integer of 1 or 2. A dye-sensitized oxide semiconductor electrode includes an electrically conductive body, an oxide semiconductor film provided on a surface of the electrically conductive body, and the above metal complex. A solar cell may be constructed from the above dye-sensitized oxide semiconductor electrode, a counter electrode, and a redox electrolyte contacting with both electrodes.

Abstract: A photosensitizer complex of formulae (Ia) MX3Lt or (Ib) MXYLt in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium, preferably ruthenium or osmium; each X is a co-ligand independently selected from NCS—, Cl—, Br—, I—, CN—, NCO—, H2O, NCN2−; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and C1-30 alkyl, preferably NCS—; and Lt is a tridentate ligand comprising heterocycles such as pyridine, thiophene, imidazole, pyrazole, triazole, carrying at least one carboxylic, phosphoric, hydoxamic acid or a chelating group. A photovoltaic cell comprising an electrically conductive layer deposited on a support to which at least one titanium dioxide layer has been applied and, as a photosensitizer applied to the titanium dioxide layer, a photosensitizer complex of formula (Ia) or Ib) as specified above.