196 results about "Coordination complex" patented technology

Molybdenum(0) coordination complexes comprising ligands which each coordinate to the metal center by nitrogen or phosphorous are described. Methods for depositing molybdenum-containing films on a substrate are described. The substrate is exposed to a molybdenum precursor and a reactant to form the molybdenum-containing film (e.g., elemental molybdenum, molybdenum oxide, molybdenum carbide, molybdenum silicide, molybdenum nitride). The exposures can be sequential or simultaneous.

The invention relates to the technical field of catalysts, and provides a catalyst and a preparation method thereof, and an application of the catalyst in carbon dioxide-based degradable plastics, the catalyst is a supported catalyst, and comprises a carrier and an active component; the carrier comprises ternary hydrotalcite, and the active component comprises double metal cyanide and a rare earth yttrium complex; the raw material of the double metal cyanide comprises a cyano coordination compound; the cyano coordination compound comprises potassium hexacyanomanganate and / or potassium hexacyanocobaltate. According to the technical scheme, the problems of low yield and more byproducts when the catalyst is used for catalyzing and preparing the carbon dioxide-based degradable plastic in the related technology are solved.

The invention relates to a salt-resistant biomass interface evaporation material as well as a preparation method and application thereof, and relates to the technical field of interface evaporation materials. The preparation method comprises the following steps: mixing sunflower fiber dispersion liquid, polyvinyl alcohol and carbon-containing molybdenum disulfide, then adding glutaraldehyde, then carrying out liquid nitrogen freezing and freeze drying, sequentially soaking with a tannic acid solution, a calcium chloride solution and a ferric chloride solution, and then carrying out freeze drying. Natural sunflower fibers are used as a main framework, cotton is used as a supporting material, carbon-containing MoS2 is prepared and crosslinked with polyvinyl alcohol, a hydrophilic functional layer is constructed on the surface of the material through tannic acid, and the tannic acid is coordinated and complexed with Ca and Fe < + >, so that a more stable hydrophilic complexed coating is formed on the surface of the material; the surface wettability and the water conveying capacity of the material are further improved, meanwhile, salt crystal deposition and precipitation in the seawater evaporation process are effectively inhibited, and the oxidation resistance and the seawater corrosion resistance of the material are improved.

A method for producing calcium phosphate crystals according to the present invention comprises a step (S11) for preparing a weakly basic phosphoric acid solution containing a complex comprising a rare earth element ion and a coordination compound having a ligand coordinated to the rare earth element ion and a step (S12) for adding a calcium-containing compound to the weakly basic phosphoric acid solution and hydrolyzing. Some of the plurality of calcium ions contained in the structure of the calcium phosphate crystals are substituted by the rare earth element ion.

The invention discloses a covalent organic framework antibacterial material with NO light-controlled release as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The covalent organic framework antibacterial material is a porous polymer taking a cyclodextrin inclusion compound and a porphyrin metal coordination compound as structural units; a plurality of porphyrin metal coordination compounds surround the cyclodextrin inclusion compound in each structural unit, and the porphyrin metal coordination compounds are not on the same plane; the cyclodextrin inclusion compound is obtained by inclusion of BNN6 with beta-cyclodextrin; the porphyrin metal coordination compound is a coordination compound of porphyrin and copper. The preparation method comprises the following steps: firstly preparing a cyclodextrin porphyrin porous polymer, then matching the cyclodextrin porphyrin porous polymer with copper and entrapping BNN6 to obtain a covalent organic framework antibacterial material, utilizing NO release and combining simulated photo-thermal, photodynamic, peroxidase and glutathione peroxidase to achieve synergistic antibacterial effect, and remarkably accelerating the recovery of bacterial infected wounds.

A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 A.

The invention discloses a synthesis method and application of nitrogen-doped carbon-coated Co porous spheres, cobalt nitrate hexahydrate and 4-picolinic acid are dissolved in a mixed solution, the mixed solution comprises dimethylformamide and absolute ethyl alcohol, then the mixed solution is transferred into a reaction kettle for heating reaction, and after the reaction is finished, centrifugal drying is performed to obtain a Co coordination compound precursor; and calcining the precursor in an argon hydrogen atmosphere, and selecting and setting a proper heating rate, a proper calcining temperature and a proper calcining time to obtain the nitrogen-doped carbon-coated Co porous ball. The obtained nitrogen-doped carbon-coated Co porous ball is used as the air cathode of the zinc-air battery, so that high power density and excellent charge-discharge cycle stability are realized.

Disclosed herein is a compound that is (R)-(2-(3-((((2-ethylbutanoyl)oxy)methoxy)carbonyl)-2-hydroxyphenyl)-1-propionamidoethyl)boronic acid citrate coordination complex, or a pharmaceutically acceptable salt or solvate thereof. Also disclosed herein are methods of treating a bacterial with a compound that is (R)-(2-(3-((((2-ethylbutanoyl)oxy)methoxy)carbonyl)-2-hydroxyphenyl)-1-propionamidoethyl)boronic acid citrate coordination complex, or a pharmaceutically acceptable salt or solvate thereof in combination with ceftibuten.

A novel method for artificial photosynthesis utilizing a chemical system that operates by harnessing visible light and directly capturing carbon dioxide and water from the atmosphere. The system is based on self-organizing complexes comprising visible-light-sensitive chromophores, such as 2-phenyl indole and 2-phenyl benzoxazole, along with titanium tetrachloride, which autonomously perform continuous, complex chemical operations to produce long-chain (C2 to C17) oxygenated organic materials. The process employs earth-abundant metal coordination compounds, including titanium (Ti), zirconium (Zr), hafnium (Hf), and vanadium (V), in the solid state. These compounds form carbonated metal derivatives upon hydrolysis, which are subsequently reduced through proton transfer from water. The system initially generates C1 materials that oligomerize via a novel self-catalyzed mechanism intrinsic to the system's operation. Monitoring and characterization of the chemical transformations have been conducted using high-resolution MALDI-TOF (matrix-assisted laser desorption ionization-time of flight) mass spectrometry, supported by infrared (IR) spectroscopy and nuclear magnetic resonance (NMR) analysis. This innovation represents a sustainable and scalable approach for converting atmospheric CO2 into valuable organic materials.

This composition for forming a coating film for foreign substance removal can form a coating film that can be removed using a remover liquid. The composition contains a film structural component and a solvent, and the film structural component contains a coordination compound.

The application discloses a kind of light-assisted anticorrosion coating materials and preparation method based on metal coordination structure, the light-assisted anticorrosion coating material is on the basis of traditional anticorrosion metal zinc layer continue to be coordinated with the metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability, and form coordination complex Co (bpy) (dhbq) (bq) @Zn.Because metal coordination polymer Co (bpy) (dhbq) (bq) itself can additionally generate photo-generated electron and photo-generated current after being illuminated, provide redundant charge for Zn layer, make it be in lower potential, strengthen the function of cathodic protection.Corrosion can be inhibited through this mechanism, prolong the service life of Zn layer, provide efficient, green anticorrosion protection for the steel material that needs to be protected.In addition, metal coordination light-assisted anticorrosion technology can also inhibit marine bioattachment by slowly releasing metal ions Co, prevent biofilm formation, reduce microbial growth, prolong the service life of protected material in marine environment, also applicable to underwater bioinduced corrosion and the protection of fouling metal structure.

The application discloses a platinum complex with controllable activity and a preparation method and application thereof, which is formed by coordination of vinyl siloxane, modified ligand and chloroplatinic acid; the modified ligand is prepared by reaction of maleic anhydride, allylamine and hydroxymethyl dimethyl phosphite. The application introduces amide groups and phosphite groups into the molecular chain of maleic anhydride, uses the groups as coordination compounds to coordinate with vinyl siloxane and platinum, and can improve the normal-temperature storage stability of the platinum catalyst while still keeping high catalytic activity of the platinum catalyst on the hydrosilylation reaction; when the platinum complex is used for catalyzing preparation of addition-type liquid silicone rubber, no inhibitor needs to be added, and the silicone rubber has good mechanical properties.

The invention discloses a photo-assisted anti-corrosion coating material based on a metal coordination structure and a preparation method, the photo-assisted anti-corrosion coating material is continuously coordinated with a metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability on the basis of a traditional anti-corrosion metal zinc layer to form a coordination compound Co (bpy) (dhbq) (bq) (at) Zn. Due to the fact that the metal coordination polymer Co (bpy) (dhbq) (bq) can additionally generate photo-generated electrons and photo-generated currents after being illuminated, redundant charges are provided for the Zn layer, the Zn layer is made to be in a low potential, and the cathode protection function is enhanced. Through the mechanism, corrosion can be inhibited, the service life of the Zn layer can be prolonged, and efficient and green anti-corrosion protection is provided for steel and iron materials needing to be protected. In addition, by slowly releasing metal ions Co, the metal coordination light-assisted anticorrosion technology can inhibit marine organism adhesion, prevent biofilm formation, reduce microbial growth and prolong the service life of a protected material in a marine environment, and is also suitable for underwater organism induced corrosion and protection of stained metal structures.

A photoluminescent nanocomposite material according to one aspect of the present invention includes a carrier matrix, a plurality of photoluminescence nanostructures distributed in the carrier matrix, and an additive including one or more coordination complexes having thiol and lipophilic properties.

The present invention primarily relates to a coordination complex obtained or obtainable by a process as defined herein and to a process for producing a coordination complex as defined herein. Moreover, the present invention relates to a coordination complex as defined herein. The present invention further relates to the use of a coordination complex obtained or obtainable according to the process as defined herein or of a coordination complex as defined herein as a catalyst. Finally, the present invention relates to a process, preferably a hydrogen transfer reaction, more preferably for the isomerization of a double bond in a substrate, as defined herein.

The invention belongs to the field of biological catalytic materials, and particularly relates to a palladium monatomic-based biological catalyst, a biological catalytic compound thereof, a preparation method and application of the biological catalyst. The invention designs a coordination complex (Pd-Tpb) based on a palladium single atom from the beginning and finds that the coordination complex can be used as a biocatalyst with radiation-enhanced ROS (reactive oxygen species) generation activity and tumor killing performance for the first time. On the basis, Pd-Tpb is used for modifying lactobacillus probiotics, the obtained biocatalytic compound is used for biocatalysis and radiosensitization treatment, and it is found that the biocatalytic compound has the remarkably improved radiosensitization effect and has the effect of eradicating primary and metastatic tumors.

The invention discloses a polyving akohol-based composite film with multiple functions and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite film is prepared by taking polyvinyl alcohol (PVA) as a matrix and introducing an iron-tannic acid coordination complex (Fe-TA) and nano zinc oxide (ZnO NPs). The preparation method comprises the following steps: preparing a PVA solution; the preparation method comprises the following steps: coordinating ferric chloride hexahydrate with tannic acid to form a Fe-TA complex solution, and compounding the Fe-TA complex solution with a PVA solution; and adding the nano-zinc oxide dispersion liquid into the composite liquid, and carrying out defoaming, curtain coating and drying to form the film. Through the synergistic effect of Fe-TA and ZnO NPs, the problems that a pure PVA film is high in hydrophilicity and single in function are effectively solved. The obtained composite film has excellent mechanical strength, high oxygen and water vapor barrier property, efficient near-infrared light thermal response capability and long-acting antioxidant activity, and has wide application prospects in the fields of food active packaging, intelligent packaging and the like. The method is simple in process, environment-friendly and easy for large-scale production.

The present invention provides a composition suitable for use in switchable mirror devices, said composition comprising, dissolved in a solvent, a reducing compound E, a metal cation Mn+, and an organic ligand L able to form a coordination complex with Mn+, wherein E does not spontaneously reduce oxidized metal present in the composition, and wherein L comprises the following moiety I: Wherein X and X' are independently selected from O, and.

The application belongs to the field of biological catalytic materials, and particularly relates to a biological catalyst based on a palladium single atom, a biological catalytic complex thereof, and a preparation method and application thereof. A coordination complex (Pd-Tpb) based on a palladium single atom is designed from scratch, and it is found for the first time that the coordination complex can be used as a biological catalyst with ROS generation activity and tumor killing performance with radioenhancement. On this basis, the Pd-Tpb is used to modify lactobacillus probiotics, and the obtained biological catalytic complex is used for biological catalysis and radiosensitization treatment, and it is found that the biological catalytic complex has a significantly improved radiosensitization effect and has the effect of eradicating primary and metastatic tumors.

Coordination complexes are provided comprising at least one metal atom; and organic ligands comprising one or more coordination sites associating with the at least one metal atom. Related methods and articles having a metal carbide coating are also provided, the metal carbide coating being derived from one or more coordination complexes.

A process comprising: contacting a cobalt salt comprising one or more cobalt halides or cobalt esters with a reducing metal and a coordination compound under conditions to produce a tetracarbonyl cobalt salt of the reducing metal, optionally in the presence of an inert solvent and carbon monoxide; b) contacting a cobalt tetracarbonyl salt of a reducing metal with a porphyrin metal halide in the presence of a coordination compound, optionally in the presence of an inert solvent, under conditions to produce a complex comprising a porphyrin metal cation wherein the coordination compound is coordinated to the metal and an anion containing cobalt tetracarbonyl.

A method is provided for manufacturing an aqueous formulation of a manganese-containing coordination complex, by combining a source of the manganese-containing coordination complex with a source of chloride anion in an aqueous solution, and simultaneously with or following combination of the source of chloride anion and the source of manganese-containing coordination complex in the aqueous solution, providing a source of a dianion to the aqueous solution to form the aqueous formulation.

The application belongs to the technical field of coordination complex catalysts, and particularly relates to a chromium-nickel bimetallic center complex catalyst and a preparation method and application thereof. Isopropylamine, a cyclohexyl benzyl chlorophosphine and an acid binding agent are added into a solvent to react, and a PNP ligand is obtained; the PNP ligand, acetylacetone chromium and acetylacetone nickel are respectively dissolved in a solvent to obtain a PNP ligand solution, an acetylacetone chromium solution and an acetylacetone nickel solution, and the PNP ligand solution, the acetylacetone chromium solution and the acetylacetone nickel solution are mixed and stirred to react, and a chromium-nickel bimetallic center complex catalyst is obtained. The chromium-nickel bimetallic center complex catalyst prepared by the application can be used for ethylene oligomerization reaction, can quickly activate ethylene molecules and accurately control the chain growth process, and meets the dual demands of high activity and high selectivity of the catalyst for industrial production.

A method is disclosed for increasing the concentration of a hyperpolarized molecule of interest in a solution. The hyperpolarized molecule of interest is prepared in an organic solution. A portion of the organic solution is rapidly evaporated to increase its concentration in the solution while maintaining sufficient nuclear spin polarization. The hyperpolarized molecule of interest is then used in an MRI or NMR experiment. A method is disclosed for increasing nuclear spin polarization in a molecule of interest polarized by the SABRE method. An at least partially deuterated molecule of interest is placed in a magnetic field having an average field strength of at most about 2 T. The molecule of interest forms a coordination complex with a SABRE catalyst or catalyst precursor and parahydrogen in the solution. An oscillating magnetic field is applied to transfer spin order from the parahydrogen to the molecule of interest, thereby increasing the nuclear spin polarization in the molecule of interest.

The present invention provides a starting material coordination compound for forming a metal thin film, the starting material coordination compound having a central metal and a ligand coordinated to the central metal, (i) the atomic polarizability of the central metal being 45-51, and the starting material coordination compound for forming a metal thin film satisfying the following conditions: a polarization volume < = 200 and a relative dielectric constant < = 2.20; or (ii) the atomic polarizability of the central metal is 52-90, and the raw material coordination compound for forming a metal thin film satisfies the following conditions: polarization volume < = 240 and relative permittivity < = 2.50.

Provided is a coordination compound represented by formula (I). Also provided is a pharmaceutical composition that can be used to treat cancers, including the coordination compound of formula (I) and a pharmaceutically acceptable carrier. Also provided are applications of the coordination compound in inhibiting cancer cell survival or proliferation, inhibiting cancer cell migration or invasion, and treating cancerous tumors in a subject in need.

The invention relates to the related field of ceramic material preparation, in particular to a polycarbosilane-based modified precursor preparation method and a derivative ceramic product thereof, and the method is mainly based on a precursor conversion method and comprises the following steps: taking polycarbosilane, an organic solvent and a coordination compound as main raw materials; diluting the polycarbosilane precursor with an organic solvent, and stirring the diluted polycarbosilane precursor in a cold bath below 0 DEG C; slowly dropwise adding a coordination compound into the diluent, stirring, carrying out ultrasonic dispersion, enabling the coordination compound and the polycarbosilane to slowly react, continuously stirring in a room temperature environment, and carrying out cross-linking curing in a drying oven; and putting the crosslinked modified polycarbosilane into a tubular furnace, and carrying out inorganic and low-temperature sintering treatment in an inert atmosphere to obtain a silicon carbide ceramic product with low oxygen content. The preparation process provided by the invention is simple in method, relatively low in cost and high in practical benefit, can be used for preparing the low-oxygen-content silicon carbide ceramic product only at the sintering temperature of less than or equal to 1400 DEG C, and is excellent in heat conduction performance.

The application belongs to the technical field of biomedical materials, and particularly relates to a supramolecular coordination complex with sonodynamic activity and a preparation method and application thereof. The application proposes a new supramolecular coordination complex formed by self-assembly of a phthalocyanine compound and Ru-dbq, and finds that the supramolecular coordination complex has excellent ROS yield in response to US, and also has the characteristics of multifunctional integration such as CAT enzyme-like activity and antioxidant activity, which endows the material with great application potential in response to complex biological environments and excellent sonodynamic therapy prospects.

The application provides a crosslinking agent formed by mixed components; the mixed components include metal salts, organic ligands, surfactants and solvents; the metal salts include zirconium salts and aluminum salts; the organic ligands include alkanolamines, alpha-hydroxycarboxylic acids and polyhydroxyl compounds. Compared with the prior art, the application utilizes zirconium salts, aluminum salts and organic ligands such as alcohol amine and organic acid to form an organic aluminum zirconium crosslinking agent through a coordination complex reaction, which can effectively reduce the amount of a suspended emulsion polymer thickening agent, achieve ultra-low concentration (0.2% of the suspended emulsion polymer thickening agent) crosslinking, has a delayed crosslinking characteristic, can effectively reduce the pipeline construction frictional resistance, can also improve the viscosity of a variable viscosity fracturing fluid system under high temperature and high shear, has a wide viscosity adjustment window, has strong adaptability, meets the requirements of deep shale oil and gas online mixing and large-scale sanding, and has a good application prospect.