131 results about "Iridium compound" patented technology

The present invention relates to a novel organometallic compound, and more particularly, to a luminescent organometallic compound in which intermolecular interaction is inhibited by means of introducing a germanium substituent, thereby improving light-emitting characteristics. The present invention also relates to an organic electronic device, specifically, to an organic light-emitting diode using the compound. According to the present invention, a germanium substituent is introduced to the parent organometallic iridium compound, thus inhibiting an intermolecular interaction in the solid state and enabling the compound of the present invention to be effectively used in solution processing. When the compound of the present invention is used as part of a light-emitting layer of an organic light-emitting diode, the light-emitting efficiency of the light-emitting diode may be significantly improved. Therefore, the compound of the present invention may be effectively used as a material for an organic light-emitting diode.

A blue phosphorescent compound and an organic electroluminescent device using the same are provided. The blue phosphorescent compound can emit deep blue light and can improve color purity and reduce power consumption when used in an organic electroluminescent device.

Disclosed is a process for forming an organometallic cyclometallated iridium compound comprising reacting an iridium halide complex with a silver salt and excess organic cyclometallating ligand in a diol solvent. The process provides better yields and control of desired isomers.

The invention discloses a benzimidazole chiral heterocyclic compound as well as a preparation method and application thereof. The structure formula of the benzimidazole chiral heterocyclic compound isshown in formula I, formula II or formula III in the description. The benzimidazole chiral heterocyclic compound is prepared by treating an iridium complex which is prepared through a metal iridium compound and a phosphoramidite ligand as a catalyst, performing intra-molecular allyl amination on allyl substrate, and then synthesizing with high efficiency and high enantioselectivity. The method has the advantages of being high in catalytic reaction activity, mild in reaction conditions, high in enantioselectivity, wide in substrate applicable scope, and environmentally friendly; the primary in-vitro enzyme inhibition activity test shows that the compound is high in alpha-glucosidase inhibiting activity and can be used as an alpha-glucosidase inhibiting agent, and the compound can also be used as a further modified drug intermediate; the compound has a potential application value in preventing or treating II-diabetes, obesity and complication medicines thereof and pilot compounds thereof.

The invention discloses a quick detection method of meat freshness and a detection platform thereof, which belong to the electrochemical field. The invention is based on an electrochemical luminescence theory, has very good response to inorganic ammonia with an MWNTs/PVA/(pq)2Ir(N-phMA) modified electrode, takes an MWNTs/PVA/iridium compound modified electrode as a working electrode, a platinum wire electrode as a counter electrode and an Ag/AgCl electrode as a reference electrode, carries out CV-ECL scanning with the scanning scope of 0.2 to 1.8V and the scanning rate of 100mv/s, can continuously monitor the ammonia produced in the meat corruption change process, can quickly and sensitively detect the meat freshness, and improves the food quarantine efficiency and accuracy. The detection platform provided by the invention has the advantages of easy assembly, low cost and easy popularization, and is applicable to on-site rapid detection and mass screening.

An iridium compound is provided which is used as a light-emitting layer material of an organic EL device. An organic EL device using the iridium compound is high in device characteristics, including emission efficiency, brightness, color purity, and lifetime characteristics is also provided.

The invention provides an ortho-carborane based benzothiazole structure containing semi-sandwich iridium complex and a preparation method thereof. According to the ortho-carborane based benzothiazolestructure containing semi-sandwich iridium complex, a dinuclear iridium compound [Cp*IrCl2]2 is used as a raw material, and the dinuclear iridium compound reacts with n-BuLi and ortho-carborane basedbenzothiazole to obtain a trivalent iridium complex with the ortho-carborane based benzothiazole structure. A synthetic process provided by the invention is simple and environment-friendly, and has excellent selectivity and higher yield. The ortho-carborane based benzothiazole structure containing semi-sandwich iridium complex provided by the invention has stable physicochemical property, thermalstability and the like, the polymerization of ethylene can be efficiently catalyzed at an atmospheric pressure under a condition with MAO as a catalyst promoter, and the obtained polymer also has higher molecular weight.

An organometallic compound having a low melting point, excellent vaporization characteristic and low film formation temperature on a substrate, for forming an iridium-containing thin film by the CVD process is provided. The organometallic iridium compound is represented by the following general formula (1) or (2): wherein R<1 >represents hydrogen or a lower alkyl group; R<2 >to R<7 >each represents hydrogen, a halogen, or the like, provided that specific combinations of R<1 >to R<7 >are excluded; R<8 >represents a lower alkyl group; R<9 >to R<12 >each represents hydrogen, a halogen, or the like, provided that specific combinations of R<8 >to R<12 >are excluded. Iridium-containing thin films are produced by using the compound as a precursor by CVD process.

Flame-retardant compositions contain peroxidically crosslinking, addition-crosslinking or condensation-crosslinking silicone rubber and at least one rhodium compound or iridium compound or mixtures of the two. The compositions exhibit increased flame retardancy as compared to similar compositions containing platinum complexes, and especially when used in conjunction with the latter, produce stable ceramic layers upon combustion.

The invention discloses a method for preparing an acetic acid and an acetic anhydride respectively and synchronously, which is characterized in that: a methanol, a methylacetate or a mixture of the methanol and the methylacetate and a mixed gas of carbon monoxide and hydrogen are reacted at 150 to 250 DEG C and 2.0 to 6.0 MPa; and a catalyst system used in the reaction comprises a mixture of rhodium or one of rhodium compounds and iridium or one of iridium compounds, a methyl iodide, at least one selected from mixtures of an amino acid and an amino acid derivative, the amino acid or the aminoacid derivative, and an accelerant. The method for preparing the acetic acid and the acetic anhydride in the invention has the advantages of: (1) reducing the generated tar, (2) reducing substance content of the acetic anhydride product, and (3) improving the stability of the catalyst system in the invention and avoiding the precipitation phenomenon. Due to the fact that the reaction system has no water, the corrosion to devices is also reduced.

The invention discloses an organic metal iridium compound and an organic light-emitting device (OLED). A complex is fused into a ring by using a 4-sit substituent and a 5-sit substituent of a quinoline position so as be used as a structural unit part of the organic metal iridium compound, so that not only is the inter-molecular stacking effect reduced, but the improvement of the photoelectric performance of the OLED device is also facilitated, the sublimation temperature is lowered, and the original organic metal iridium compounds which are difficult to sublimate and purify are enabled to become materials which are easy to sublimate and easy in large-scale evaporation preparation of OLED devices. The organic metal iridium compound provided by the invention has good photoelectric propertiesand can be applied to the field of OLED illumination or OLED display.

A membrane electrode assembly (MEA) for a fuel cell which exhibits enhanced reversal tolerance. In particular, a layer of iridium or an iridium compound, preferably metallic iridium or iridium oxide supported on TiO₂, is provided on the anode to electrolyze available water and pass the majority of the current during a reversal of the fuel cell, thereby preventing damage to the MEA. The iridium or iridium compound is applied to an anode structure according to a predetermined pattern, with only part of the anode active area containing Ir. The parts of the MEA that do not contain Ir are not expected to suffer degradation from Ir cross-over, so that overall degradation of the cell will be diminished. Having less precious metals will also translate into less cost.

The invention discloses an iridium picolinate complex catalyst for synthesizing acetic acid by methanol carbonylation and a preparation method and an application thereof, a ligand of the catalyst is a copolymer of 2-vinyl pyridine and methyl acrylate, and a copolymer iridium complex catalyst is formed by the complexation reaction with an iridium compound. The preparation method comprises the steps of preparing the ligand of the catalyst, then dissolving 1 part by weight of the copolymer in 10-100 parts by weight of the acetic acid, stirring, heating under reflux, adding the iridium compound which accounts for 3-10% of the weight of the copolymer, carrying out reaction for 10-60min, cooling to the room temperature, using ether for precipitation, filtering and then obtaining a copolymer iridium catalyst. The 1 part by weight of the copolymer is added into the acetic acid solution containing (Ir(CO)2I)2 or (Ir(CO)2Cl)2 under stirring, the feeding is 3-10% of the weight of the copolymer calculated by the weight of iridium, the reaction is carried out for 10-30min under stirring, the ether is used for precipitation, and the copolymer iridium catalyst is obtained by filtering. The copolymer iridium catalyst is used for preparing the acetic acid by methanol carbonylation reaction and has good catalytic performance.

The invention discloses a novel red phosphorescent iridium compound with high luminous efficiency and saturation and an OLED device based on doping of the compound. The OLED device is of multilayer structure, which, from an underlayer, successively consists of a transparent conducting film, a cavity transport layer, a light-emitting layer, a cavity-exciton barrier layer, an electron injecting layer and a cathode, wherein the light-emitting layer is of composite structure formed by stack-up of successive three layers of different host materials doped with red light iridium complex. Mass concentrations of the red light iridium complex doped in the host material layers of the light-emitting layer are identical or are deviated from each other, with the total mass concentration of the doping between 5% and 10%. The device commendably restrains the exciton to emit light in the light-emitting layer, thereby improving efficiency and color stability of the red organic light-emitting device. The red organic light-emitting device in the invention can be applied to a red light unit and a red light component of white light of high-performance color rendering devices.

This invention provides raw material compounds for use in CVD which contain an organic iridium compound as a main ingredient, the organic iridium compound consisting of tris(5-methyl-2,4-hexanedionato)iridium. According to the CVD which uses the above raw material compounds, a pure iridium thin film and an iridium oxide thin film of excellent morphology can be produced effectively.

The invention discloses an iridium compound organic electroluminescent phosphorescent material capable of emitting bright red phosphorescence in a pure solid film. The material contains benzothiazole derivate cyclometalated ligand, xenyl and replaced xenyl are introduced on the benzothiazole, so that the maximum phosphorescent emitting wavelength bathochromic shift of the iridium compound reachesover 600 nanometers in the pure solid film, and the iridium compound is in salmon color and pure red color; simultaneously, the problem of reduction in emitting intensity of a solid phosphorescence material, caused by concentration quenching or triplet-triplet exciton annihilation, is avoided. A red-light electroluminescent phosphorescent device with an undoped structure can be prepared by using the iridium compound as a luminescent material; when the device works under the condition of higher current density, the luminous efficiency is not remarkably reduced, device performance is stable, and the luminous color is salmon color or pure red color.