251 results about "Ir element" patented technology

Bidentate ligand, iridium complex and electro-generated phosphorescent device of iridium complex are disclosed. The bidentate contains cavity transmission group carbazole, the chemical formula of the iridium complex is Ir(C^N)2 (acac), acac= acetyl acetone. The electro-luminescent device consists of conductive glass lining bottom, cavity injecting layer, luminescent layer and cathodic layer. The doping material of luminescent layer is iridium complex of bidentate ligand. Its advantages include to balance transmission ability of current carrier, and to improve brightness and efficiency of device for organic electro-luminescent domain.

A process for removing and/or dry etching noble metal-based material structures, e.g., iridium for electrode formation for a microelectronic device. Etch species are provided by plasma formation involving energization of one or more halogenated organic and/or inorganic substance, and the etchant medium including such etch species and oxidizing gas is contacted with the noble metal-based material under etching conditions. The plasma formation and the contacting of the plasma with the noble metal-based material can be carried out in a downstream microwave processing system to provide processing suitable for high-rate fabrication of microelectronic devices and precursor structures in which the noble metal forms an electrode, or other conductive element or feature of the product article.

The invention discloses a phosphorescent iridium complex with high luminescent quantum efficiency and thermal stability and an electroluminescence device of the complex. In the phosphorescent iridium complex, the ligands are characterized by 3-or 6-phenyl pyridazine, a central metal ion is Ir (III), and the metal ion and three ligands form a neutral complex with the same cyclic metal ligands. In the ligand in the invention, the atom adjacent to coordination N atom is also N atom, thereby avoiding the interference of H atom on the adjacent C atom on complexing of N and metal when pyridine is taken as ligand so that the binding between the ligands and the metal ion is firmer and metal ligand charge transfer (MLCT) process is facilitated. Thus, the iridium complex has high luminescent quantum efficiency and thermal stability. Simultaneously, the energy gap of the iridium complex can be regulated through changing other functional groups on the ligand, so as to regulate the emission wavelength of a material. The iridium complex has an application potential in the aspects of organic electroluminescent display based on red-blue-green three primary colors, backlight in liquid crystal display, organic solid illumination and the like.

An organometallic iridium complex has high emission efficiency and a long lifetime. The iridium complex includes the structure represented by Formula (G1). In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms. R¹ to R⁶ independently represent any one of hydrogen and a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, and one of R² and R⁶ represents the alkyl group. X represents a carbon atom or a nitrogen atom, and when X represents a carbon atom, hydrogen or an alkyl group having 1 to 6 carbon atoms is bonded to the carbon atom. A dihedral angle between a ring bonded to R¹ and a phenyl group bonded to R² to R⁶ is 30° or more and 90° or less. An interior angle of the pyridine/pyrimidine ring facing R¹ is within a range of 118° to 122°.

The invention pertains to the technical field of electrocatalysis and energy transformation, more particularly relates to a non-Pt metal electrocatalyst used for fuel cells, a preparation method and the application thereof. The electrocatalyst uses Ir element and other transition metals as active ingredients which are carried on a catalyst carrier to obtain a novel catalyst used for the fuel cells. The electrocatalyst can be obtained by means of physical sputtering, high-temperature calcinations, gas-phase chemical reduction, liquid-phase chemical reduction, electrochemical deposition, or electrophoretic deposition, and the like. The electrocatalyst prepared by the method can be used not only as the cathode catalyst of the fuel cells, but also as the anode catalyst of the fuel cells. More importantly, the novel non-Pt metal electrocatalyst can avoid the dependence on Pt which is high in price and low in reserves, thus being beneficial to the commercialization of the fuel cells. Furthermore, the novel non-Pt metal electrocatalyst has higher activity and stability and the advantages of low price, simple preparation process, being suitable for large-scale production and the like.

The object of the present invention is to provide an iridium complex compound emitting red light, a composition comprising the iridium complex compound and a solvent, an organic electroluminescent element which is produced using the compound or the composition and has a long driving life and an excellent electronic durability, and a display device and lighting device using the organic electroluminescent element. The present invention relates to an iridium complex compound solvent having a 2-phenyl quinazoline framework and a specific substituent.

Laminated, biaxially textured superconductors include Ir-based buffer layers and/or substrates.

A light-emitting element including a phosphorescent organometallic complex is provided. The organometallic complex emits phosphorescence in the yellow green to orange wavelength range and has high emission efficiency and high reliability. Thus, the organometallic complex that exhibits phosphorescence is provided. The organometallic complex, in which nitrogen at the 3-position of a pyrimidine ring is coordinated to a metal, a carbazole skeleton is bonded to the 4-position of the pyrimidine ring, and the carbazole skeleton is bonded to the metal, is used as an emission center. The metal is preferably a Group 9 element or a Group 10 element, more preferably iridium.

The present invention discloses an indenotriphenylene-based iridium complexes is represented by the following formula (1), the organic EL device employing the derivative as light emitting dopant of emitting layer can display good performance like as lower driving voltage and power consumption, increasing efficiency and half-life time.

wherein A ring represents an imidazole, a pyridine, a quinoline and an isoquinoline, X₁-X₂ represents a bidentate ligand, and m, n and R₁ to R₄ are the same definition as described in the present invention.

The invention belongs to the technical field of organic electroluminescence, and in particular relates to iridium complexes containing a guanidine group ligand and application of the iridium complexes to the preparation of electroluminescent devices. The compounds have the advantages that: the compounds are easy to prepare and low in cost, have high electroluminescent properties, and can be further used as luminescent layers of organic electroluminescent devices, and high-performance electroluminescent devices with the emission spectra covering a green light area and a red light area are obtained and can be used in application fields of illuminating sources, signal lamps, alphanumeric displays, signposts, photoelectric couplers, flat panel displays and the like.

The invention discloses a red to near-infrared phosphorescent iridium complex light-emitting material and application thereof to an electroluminescent device, belongs to the technical field of organic electroluminescence, and particularly relates to a dark red to near-infrared phosphorescent iridium complex light-emitting material with a 1-phenyl quinoline derivative as a first ligand and an amidino-guanidyl derivative as an auxiliary ligand. The general formula of a compound of the material is shown as follows. The red to near-infrared phosphorescent iridium complex light-emitting material is doped in a main material as a phosphorescent object to form a light-emitting layer of the organic electroluminescent device. The compound has the advantages that the preparation process is simple, and the manufactured electroluminescent device is high in efficiency and long in service life. The device can be used in the application fields of panel display, illumination, light sources and the like. The formula is shown in the description.

The invention discloses a benzofuran-containing organic iridium complex and a preparation method thereof, and a photoelectric device, and belongs to the technical field of luminescent materials, the structural general formula of the organic iridium complex is shown in the specification, in the formula, R1 and R2 are respectively independently represented as mono-, di- or non-substituent group; R3and R4 are independently represented as mono-, di-, tri-, tetra- or non-substituent; R5, R6 and R7 each independently represent a single substituent or no substituent; and R1, R2, R3, R4, R5, R6 and R7 are each independently at least one of hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C8 alkyl, substituted or unsubstituted C3-C15 cycloalkyl, substituted or unsubstituted C6-C18 aryl, and substituted or unsubstituted C4-C12 aromatic heterocyclic groups. The organic iridium complex can significantly reduce the driving voltage of the photoelectric device, significantly improve the current efficiency and power efficiency of the photoelectric device and prolong the service life of the photoelectric device.

The invention discloses a water-soluble phosphorescent polymer for detecting pH by a ratio method as well as a preparation method and application thereof. The polymer consists of two iridium complexes(Ir1, Ir2) and polyvinylpyrrolidone, wherein the Ir1 is a reference complex and does not respond to pH; the Ir2 can specifically respond to pH, and the luminous intensity of the Ir2 is weakened alongwith reduction of pH; and the polyvinylpyrrolidone gives high water solubility and biocompatibility to the polymer. The luminous intensity and the emitting life of the water-soluble phosphorescent polymer P disclosed by the invention are reduced along with reduction of pH, so that the pH of a cell is detected through confocal imaging; and the water-soluble phosphorescent polymer is a phosphorescent probe integrating excellent water solubility and biocompatibility and has important application prospect in aspects of biological imaging and sensing.

The invention discloses a preparation method of a photoelectrochemical biosensor based on a cyclometalated iridium complex and application of the photoelectrochemical biosensor to thrombin detection.The biosensor uses the visible light-excited iridium complex as a photoelectrically active material, and the iridium complex is located on colloidal gold to prepare a gold nanometer signal probe. Capturing hairpin DNAs are immobilized on a modified ITO electrode to prepare a working electrode of the biosensor. A thrombin recognition system includes a specific recognition hairpin HP1 and an adjuvant hairpin HP2; in the presence of thrombin, a large number of secondary targets T-DNAs are released under the action of the excision enzyme ExoIII and hybridize with the capturing hairpin DNAs on theworking electrode so as to capture the gold nanometer signal probe, thereby realizing response to photocurrent signals; thrombin with different concentrations allows the amount of the signal probe connected to the working electrode to be different, so photocurrent intensities are different, and thus, quantitative detection of thrombin is realized. The method has the advantages of high sensitivityand good selectivity.

Provided as a novel substance is a long-lifetime organometallic iridium complex emitting yellow light with high emission efficiency. The organometallic iridium complex is represented by General Formula (G1) and has a structure in which a phenyl group whose 2-position and 6-position are each substituted by an alkyl group is bonded to the 4-position of pyrimidine. In General Formula (G1), R¹ and R² each independently represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

An organometallic iridium complex that has high emission efficiency and a long lifetime and emits deep red light (emission wavelength: around 700 nm) is provided. The organometallic iridium complex has a ligand that is represented by General Formula (G0) and has at least a dimethyl phenyl group and a quinoxaline skeleton.

In the formula, R¹ to R³ separately represent an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a phenyl group having an alkyl group having 1 to 6 carbon atoms as a substituent.

A microcosmic electrical impedance imaging device based on a diamond NV color center comprises a magnetic field imaging module adopting a diamond ensemble NV as a weak magnetic field detector; a microwave radiation structure module which adopts an omega-shaped radiation structure as a microwave antenna to radiate a microwave magnetic field to the diamond NV color center; a microelectrode module which is used for injecting alternating current into the buffer solution by adopting a cross-shaped iridium-iridium oxide metal electrode with two pairs of electrode arms. According to the invention, the spatial resolution of the existing magnetic resonance electrical impedance imaging is expanded, and the spatial resolution of the electrical impedance imaging is improved to a micron scale to a submicron scale, so an electrical impedance imaging method on a microcosmic scale is realized, and the method is suitable for conductivity imaging of a cell biological sample.