117 results about "Coordination complex" patented technology

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.

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 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.

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 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.

Metal chelation compounds and associated coordination complexes are provided. In one aspect, this disclosure provides for a metal chelation compound, the compound having the general structure: D-L-T, wherein D is deferasirox or a derivative thereof, T is triapine or a derivative thereof, and L is a linking group and is a bond, C1-C10 alkyl, C2-C10 alkenyl, or —(C0-C3 alkyl)-R—(C0-C3 alkyl)-, wherein R is aryl, cycloalkyl, or polyethylene glycol.

The invention discloses a coordination compound with an olefin coordination trinuclear zirconium cluster structure and a photoresist composition containing the coordination compound. The chemical formula of the coordination compound is [(CpZr) 3 (mu2-OH) 3 (mu3-O) X3], and Cp is a cyclopentadienyl ring; x is a ligand formed after the organic carboxylic acid loses hydrogen atoms on carboxyl, the chemical formula of the organic carboxylic acid is R-COOH, and R is an organic group. The material has a trinuclear metal cluster structure. Compared with a traditional photoresist polymer, the coordination compound disclosed by the invention has a relatively small molecular size, and a better photoetching resolution can be obtained; meanwhile, according to the coordination compound disclosed by the invention, the corrosion resistance can be effectively improved by introducing a cyclopentadienyl ring into a cluster structure, so that the resolution ratio and the characteristic size of a photoetching pattern are improved, and huge application potential is shown.

Molybdenum (0) precursors for molybdenum film deposition and methods of depositing molybdenum-containing films on substrates are provided.SOLUTION: Provided is a molybdenum (0) precursor for molybdenum film deposition comprising a metal-coordination complex comprising molybdenum (0), one arene ligand having the general formula of C6R6 and being substituted with one or more alkyl groups, and one or more monodentate ligands coordinated by C, N, or P, wherein each R is selected from hydrogen, Me -, Et -, iPr - or tBu -, and wherein the molybdenum (0) precursor has less than 5% of halides and carbonyl groups on an atomic basis. Also provided are methods of depositing a film comprising exposing a substrate to a molybdenum (0) precursor, and exposing the substrate to a reactant to react with the molybdenum (0) precursor and form a molybdenum film on the substrate.SELECTED DRAWING: Figure 2A-2C

The invention relates to the technical field of fuel cell cathode catalysts, and discloses a proton exchange membrane fuel cell cathode catalyst and a preparation method and application thereof.The preparation method comprises the steps that 1, tetraammineplatinum acetate, M metal acetate, citric acid and a solvent are mixed under the stirring condition and subjected to a coordination reaction, and a coordination solution is obtained; a coordination reaction product containing the coordination compound is obtained; wherein M is selected from at least one of Ni, Co and Zn; (2) performing high-temperature pyrolysis on the coordination reaction product in an inert atmosphere; and (3) contacting the product obtained in the step (2) with acid, and then carrying out solid-liquid separation, washing and drying to obtain the carbon-coated platinum-based alloy nano material, and (4) mixing the carbon-coated platinum-based alloy nano material with conductive carbon black. The proton exchange membrane fuel cell cathode catalyst prepared by the invention has excellent sulfur poisoning resistance and good stability.

The invention discloses a sulfur cross-linking material with low reaction temperature performance as well as a preparation method and application thereof, and belongs to the technical field of road asphalt modified materials. The sulfur cross-linking material is a composite cross-linking agent formed by modifying sulfur with a rare earth metal compound, and the preparation method of the sulfur cross-linking material comprises the following steps: slowly adding Na2S into a rare earth metal salt solution, and stirring for reaction; and after the reaction is finished, filtering, washing a product, and drying to obtain the sulfur cross-linking material. In the invention, the sulfur and the rare earth metal ions can form a coordination compound, so that the sulfur has higher reaction activity, and can participate in a crosslinking reaction at a lower temperature. According to the sulfur cross-linking material prepared by the invention, the development temperature of the SBS modified asphalt in the production process is remarkably reduced, and the emission of CO2 in the production process of the SBS modified asphalt is reduced, so that the effects of energy conservation and emission reduction are achieved.

The invention belongs to the field of photosensitive materials, and particularly relates to a coordination compound and application thereof as a photoresist component. The coordination compound provided by the invention has a trinuclear zirconium cluster structure, and compared with a traditional polymer, the coordination compound provided by the invention has a smaller molecular size and can obtain better photoetching resolution; meanwhile, according to the coordination compound disclosed by the invention, by introducing the cyclopentadienyl ring or the derivative thereof into the cluster structure, the corrosion resistance can be effectively improved, so that the resolution ratio and the characteristic size of a photoetching pattern are improved, and huge application potential is shown.

One method comprises: contacting a cobalt salt comprising one or more cobalt halides or cobalt esters with a trialkylaluminium or halogenated dialkylaluminium in a coordination compound and / or an inert solvent to form a solution; contacting the formed solution with carbon monoxide having a partial pressure of about 10 psi to about 500 psi at a temperature of about 25 DEG C to about 100 DEG C under conditions to form cobalt carbonyl; and contacting the cobalt carbonyl with a porphyrin metal halide or alkyl group with a coordination compound, and optionally, an inert solvent, under conditions to produce a complex of a cation having a porphyrin metal halide or alkyl group wherein the coordination compound is coordinated to a metal and an anion having a cobalt carbonyl group.

The invention relates to the technical field of all-vanadium redox flow battery energy storage, and discloses a high-stability all-vanadium redox flow battery electrolyte which comprises a supporting electrolyte, a vanadium ion active component; and a stabilizing additive; the supporting electrolyte is sulfuric acid; the vanadium ion active component comprises at least two of V < 2 + >, V < 3 + >, V < 4 + > and V < 5 + >; the stabilizing additive is an aromatic heterocyclic dicarboxylic acid compound which forms a tridentate coordination complex with vanadium ions. According to the preparation method, 2, 6-pyridinedicarboxylic acid is introduced as a stable additive, a tridentate coordination structure formed by pyridine nitrogen and dicarboxyl and pentavalent vanadium ions (V < 5 + >) form a stable complex, hydrolysis of the V < 5 + > ions is avoided to generate a hydroxyl bridge, then a stable oxygen bridge is formed through condensation and dehydration of the hydroxyl bridge, and finally V2O5 precipitates are generated through polymerization; the long-term chemical stability of the electrolyte at the temperature of 40 DEG C or above, especially under the severe condition of 50 DEG C, is improved, and the problems of fast capacity fading and flow channel blockage caused by high-temperature precipitation of the existing electrolyte are solved.

A pharmaceutical composition comprising glutathione disulfide or pharmaceutically acceptable organic or inorganic salts thereof and glutathione disulfide S-oxide of the structure (I) or pharmaceutically acceptable organic or inorganic salts thereof for eliminating dose-related toxicity of pharmacologically active compounds and enhancing therapeutic activity of pharmacologically active compounds in the treatment of infectious and non-infectious diseases. Typically, the composition contains 0.01-10% of glutathione disulfide S-oxide by weight of the total composition, in addition to a metal (Me) in the form of a complexing compound containing Me-S-glutathione bond, said metal being selected from platinum group elements, typically platinum. The amount of d-metal complexing compound administered to a patient can be 10 ‑3 to 10 ‑15 mol / kg of body weight. The composition can be used in combination with pharmacologically active compounds, which are anticoagulants, factor Xa inhibitors, antibacterial or antiviral agents, to increase their therapeutic activity and eliminate dose-related toxicity.

The invention discloses a ligand, a metal ion residual quantity detection method and application. The ligand is used for being subjected to a complexation reaction with metal ions to generate a coordination compound, and under the same chromatographic condition, the retention time of the ligand is different from that of the coordination compound. By adopting the ligand provided by the invention, metal ion residues in carrier molecules for preparing radiopharmaceuticals can be rapidly and effectively detected.

The invention relates to zinc-based coordination compound nanoparticles assembled and synthesized based on Lewis acid-base pairs and catalytic application of the zinc-based coordination compound nanoparticles, and belongs to the technical field of nano biological catalysis. The method comprises the following steps: a zinc-based coordination compound ZnNPs is synthesized based on different zinc-based compounds and different alkyl substituent imidazoles by a one-pot synthesis method, the zinc-based coordination compound ZnNPs can be used as a Lewis base catalyst to quickly and efficiently catalyze a DA-1, 5-DHA system to generate strong yellow fluorescence, and compared with single catalysis of different alkyl substituent imidazoles, the synthesis method has the advantages that the synthesis efficiency is high, and the synthesis cost is low. The zinc-based coordination compound synthesized on the basis of different zinc-based compounds and different alkyl substituent imidazoles has higher catalytic activity. The preparation method has the advantages of simplicity, high universality and high catalytic activity. The fluorescent immunosensor for detecting the cTnI, which is constructed by the ZnNPs, has a good linear relationship, specificity and low detection limit on the cTnI, and can sensitively and accurately detect the cTnI.

The application belongs to the technical field of membrane preparation and application, and discloses a preparation method of a carbon molecular sieve membrane for efficient separation of ethylene and ethane. The carbon molecular sieve membrane for efficient separation of ethylene and ethane takes polyimide containing a benzoxazole unit as a precursor material, and is carbonized after being doped with sulfur-containing substances to form a film. After carbonization, transition metal silver ions are introduced to form metal coordination complex bonds with sulfur-containing units in the membrane, thereby improving the loading amount of the transition metal silver ions, promoting the transfer of ethylene in the membrane, and improving the separation performance of ethylene and ethane. The application introduces sulfur-containing substances to complex with transition metals, greatly improves the loading amount of the transition metals, and greatly improves the separation effect of ethylene and ethane. The application has a wide application prospect in the field of ethylene and ethane separation.