137 results about "Coordination polymer" patented technology

The invention discloses a method for low-alkalinity flotation of lead-zinc (silver-containing) polymetallic ore based on a heterocyclic sulfydryl coordination polymer, which comprises the following steps of: adjusting the pH value of ore pulp to 7.5 + / -0.3, and sequentially carrying out roughing, scavenging and concentration by adopting a composite collecting agent according to a gradient flotation procedure; wherein the mass concentration of the ore pulp is 20-40%; the adding amount of the composite collecting agent is 150-300g / t of ore pulp; the composite collecting agent is composed of a modified heterocyclic sulfhydryl compound, C12-C18 alkylamine polyoxyethylene ether and a star-shaped branched nonionic surfactant according to the mass ratio of 1: (1-3): (0.5-2). According to the method, the complex silver polymetallic ore is subjected to efficient flotation under the low-alkalinity condition by applying the composite collecting agent based on the heterocyclic sulfydryl coordination polymer. Through deep exploration and optimization of a flotation reagent system, process parameters and a microcosmic action mechanism, the recovery rate of metal such as silver, copper and lead is remarkably increased, and the ore dressing cost is greatly reduced.

The invention discloses a zinc transition metal coordination polymer and a preparation method and application thereof, and relates to the technical field of metal-organic framework material photocatalysts, the chemical formula of the zinc transition metal coordination polymer is [Zn2 (L) 2 (byp)] n, and the zinc transition metal coordination polymer is prepared from 3, 3 '-(1, 2-phenyl dimethylene diether) dibenzoic acid ligand (H2L), 1, 2, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1 The polymer is prepared by co-dissolving 1, 5-bis (2-methyl-1-imidazolyl) pentane ligand (pyp) and Zn (Ac) 2.6 H2O in an aqueous solution, and the polymer has a wide prospect in application of photocatalytic degradation of antibiotics as a photocatalyst.

This invention provides a high-nickel ternary cathode material, its preparation method, and its applications. The high-nickel ternary cathode material comprises a composite core and a metal-organic coordination polymer coating layer on the surface of the composite core. The composite core includes a high-nickel ternary cathode material matrix and lanthanide metal phosphate particles dispersed in the matrix. The metal-organic coordination polymer in the coating layer is formed by the polymerization of nitrogen-containing organic ligands and their coordination with high-valence metal cations. This invention improves the bulk structural stability by pinning grain boundaries with lanthanide metal phosphates, while simultaneously providing interfacial protection using the metal-organic coordination polymer coating layer, effectively solving the problem of simultaneously achieving high cycle life and thermal stability in existing high-nickel ternary cathode materials.

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.

This invention relates to a method for producing organometallic coordination polymers and materials obtained using the provided method. The organometallic coordination polymer synthesized according to this method has a gel structure, characterized by an effective diameter of 0.75-0.80 nm and a specific area of ​​1300-1700 m². 2 / g, micropore volume of 0.5-0.6cm³ 3 The method yields nanopores per g and improved thermal stability. The synthesis method allows for reduced material consumption during the process by using a single solvent in both the synthesis and activation stages, thus shortening the production time of the polymer gel, which is characterized by active mesopores and micropores. This makes it suitable as a matrix in various absorption processes, including natural gas storage systems.

This invention provides a fluorescence-enhanced composite probe based on gold nanoclusters anchored on a zinc-based coordination polymer, its preparation method, and its application, belonging to the field of probe preparation technology. The method involves first mixing an aqueous solution of glutathione and an aqueous solution of tetrachlorohydrin to obtain a gold nanocluster solution; then adding adenine and water to a 4-(2-hydroxyethyl)-1-piperazine ethanesulfonic acid buffer solution and stirring until homogeneous, followed by the addition of a zinc chloride solution to obtain a zinc-based coordination polymer; finally, the gold nanocluster solution and the zinc-based coordination polymer solution are mixed homogeneously to obtain the fluorescence-enhanced composite probe based on gold nanoclusters anchored on the zinc-based coordination polymer. The probe of this invention can rapidly and sensitively recognize adenosine triphosphate (ATP). It can also be used to construct fluorescent hydrogels by mixing this material with κ-carrageenan; the hydrogels exhibit a sensitive response to ATP and good self-healing ability.

The invention relates to the technical field of environmental remediation, and particularly provides a bifunctional copper-based coordination polymer photocatalyst as well as a preparation method and application thereof.The bifunctional copper-based coordination polymer photocatalyst is prepared from copper chloride dihydrate, 4, 4 '-bis (3-pyridinecarboxamide) diphenyl ether and benzoic acid as main raw materials by adjusting reaction parameters. And reacting in a hydrothermal kettle to generate the bifunctional copper-based coordination polymer photocatalyst {[Cu2 (3-padpe) 2Cl2]. H2O} n. The method has the characteristics of simple process, low cost, high catalyst activity, good stability, reusability and the like, shows good application potential in repairing water bodies and soil polluted by organic matters and heavy metals, and provides a new research thought and insight for development of a novel multifunctional environment repairing agent.

The application provides a flexible water-stable coordination confined material as well as a preparation method and application thereof, and belongs to the technical field of metal organic coordination polymers. The flexible water-stable coordination confined material is obtained through a coordination reaction of metal ions and oxygen-based organic ligands; wherein the metal ions are selected from any one of V 4+ , Zr 4+ , Cu 2+ , Ti 4+ , Al 3+ , Cr 3+ , Fe 3+ ; and the oxygen-based organic ligands are selected from any one of nitrogen heterocyclic phosphonic acid organic ligands, alkyl phosphonic acid organic ligands, sugar organic ligands, phenolic hydroxyl organic ligands, alcoholic hydroxyl organic ligands, nitrogen heterocyclic hydroxyl organic ligands and enolic organic ligands.

The invention discloses a core-shell microcapsule and a preparation method thereof, and relates to the technical field of daily chemical products. The core-shell microcapsule comprises a microcapsule core with a hydrophobic material and a microcapsule shell for encapsulating the microcapsule core, the microcapsule shell comprises hybrid thermosetting resin formed by reacting multifunctional amine with epoxy resin and acrylate respectively, a coordination polymer formed by an anionic polymer containing carboxylate radicals and divalent cations, and a polyion compound formed by the anionic polymer containing carboxylate radicals and a cationic polymer. The core-shell microcapsule disclosed by the invention is suitable for wrapping various hydrophobic / lipophilic oily core materials, shows good stability in a high-temperature washing liquid environment and good adhesion performance on fabrics, and the capsule shell material has a biodegradable characteristic, so that the coating of essence can be effectively realized and the functional requirement of generating fragrance by friction can be met; the environment friendliness, the use safety and the application functionality are realized.

The invention discloses a pyrolytic coordination polymer derived copper-rare earth diatomic catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: firstly, constructing a formaldehyde-dicyandiamide-copper salt-rare earth salt quaternary coordination polymerization system, preparing a polymer precursor containing a metal-nitrogen coordination bond in situ, and realizing molecular-level uniform dispersion of copper and rare earth ions; and then coupling inert atmosphere pyrolysis and reducing atmosphere reduction processes, accurately constructing and stably anchoring copper-rare earth heteronuclear diatomic sites, and finally forming a target catalyst with the diatomic sites uniformly dispersed on the nitrogen-doped carbon carrier. When the material is used for a CO2 electrochemical reduction reaction, the methane Faraday efficiency reaches up to 78% under the current density of 400 mA cm <-2 >, and the stability is excellent; and in a wide current density interval of 200-600 mA cm <-2 >, the methane selectivity is stably maintained to be 60% or above. The process is simple and convenient, the cost is low, and an economic, reliable and large-scale technical scheme is provided for CO2 resource efficient conversion.

The invention relates to the technical field of photoelectrocatalysis, in particular to a Co (II) coordination polymer photoelectrode crystalline material and a preparation method and application thereof. The Co (II) coordination polymer {[Co (H2O) (Br-BDC) (BMIP)]. H2O} n is obtained from organic ligands BMIP, H2 (Br-BDC) and cobalt salt through a solvothermal method, cobalt (II) ions serve as three connection nodes, BMIP and H2 (Br-BDC) ligands serve as bridging ligands to be in mutual bridging, a two-dimensional honeycomb structure is formed, and a three-dimensional supramolecular structure is formed between layers through intermolecular hydrogen-bond interaction and pi-pi stacking. Wherein H2 (Br-BDC) is 2, 5-dibromoterephthalic acid, BMIP is 1, 3-bis (dimethylimidazolyl) propane, and n is a positive integer. The Co (II) coordination polymer shows relatively good photoelectric property, has the potential of serving as a photoelectrode material, has good optical and electrical characteristics, can be used for constructing an efficient photoelectrocatalysis water decomposition system, and has an application prospect in the aspects of photoelectric hydrolysis water oxidation and the like.

The invention belongs to the field of coordination polymers, and discloses an antiferromagnetic tetranuclear cobalt coordination polymer constructed by mixed polydentate ligands and a preparation method and application thereof. The chemical formula of the polymer is (C9H9O6) 2 (C26H18N4) 2 (OH) 2Co4. (H2O) 7, C9H9O6 is 1, 3, 5-cyclohexane tricarboxylic acid, C26H18N4 is 1, 2, 4, 5-tetrapyridyl benzene, the polymer is a monoclinic system and a P21 / c space group, the cell parameters are alpha = 90 degrees, beta = 96.166 (8) degrees and gamma = 90 degrees, and the polymer has few defects, high crystallinity and good stability and can be applied to the fields of adsorption separation, hydrogen storage, energy storage, molecular magnets, catalysis, sensing or molecular recognition and the like.

The application belongs to the field of coordination chemistry and analytical sensing technology, and particularly relates to a Zn(II)-Tb(III) complex ratio fluorescence sensor and a preparation method and application thereof. The sensor is a double-metal coordination polymer formed by coordination of Zn(II) ions, Tb(III) ions, nitrogen-containing organic ligands and carboxylic acid organic ligands. Under excitation conditions, the sensor simultaneously generates an emission signal of ligand coordination with Zn(II) and a characteristic emission signal of Tb(III) ions, forming intrinsic double emission. By monitoring the fluorescence intensity ratio (I395 / I549) of the two characteristic emission peaks at 395 nm and 549 nm, ratio fluorescence detection of propyl gallate can be realized, and the detection limit is as low as 0.35 μM. The sensor of the application has a simple synthesis method, a rapid detection process, and realizes internal calibration by using a ratio signal, has strong anti-interference ability, and is suitable for detection of propyl gallate in edible oil and other actual samples.

The application discloses a kind of high-efficiency heterogeneous catalyst for CO2 ring addition preparation cyclic carbonate and its preparation method and application, belong to catalyst technical field.The high-efficiency heterogeneous catalyst is transition metal doped polyoxometalate coordination polymer, chemical general formula is C 16 H 58 M2N2Na2O 48 V 10 Wherein, M is selected from Co 2+ , Ni 2+ , Cu 2+ Or Zn 2+ Its preparation method is: sodium vanadate, transition metal acetate and bis (2-hydroxyethyl) amino (trihydroxymethyl) methane ligand are dissolved in water with pH being 1~3, stirring reaction, after filtration, crystallization is stationary, and is obtained.In the ring addition reaction of CO2 and epoxide, the catalyst and cocatalyst tetrabutylammonium bromide synergistic effect, catalytic yield can be up to 98.2%, selectivity is more than 99%, and catalytic activity still remains at 88% after recycling five times.

This invention presents a novel and sustainable approach for engineering highperformance electronic substrates derived from goat-based textiles, traditionally referred to as Brana. By using a carefully organized sequence of eco-friendly chemical, mechanical, and nanotechnological processes, the textile becomes 8 biodegradable, flexible, and electronically functional platform. This method incorporates active nanoink materials like graphene oxide, carbon nanotubes, and conductive and coordination polymers through scalable deposition techniques such as chemical vapor deposition, electrochemical coating, and screen printing. Consequently, the resulting substrate demonstrates outstanding electrical conductivity, mechanical strength, and thermal stability, making it perfect for next-generation flexible electronics applications. These include wearable biosensors, environmental monitoring devices, flexible printed circuit boards (PCBs), and energy storage components like supercapacitors and battery electrodes. Designed with both ecological impact and industrial scalability [ባ mind, this invention bridges indigenous natural materials with state-of-the-art nanomaterials and fabrication strategies, thereby setting a new benchmark [በ the development of sustainable, multifunctional electronic platforms

The invention discloses an amorphous copper-trithiocyanuric acid coordination polymer as well as a preparation method and application thereof, and belongs to the technical field of functional materials and biomimetic catalysis. The polymer does not have a long-range ordered structure, and the copper element takes cuprous as a main existence valence state. The preparation method comprises the following steps: carrying out surface coordination reaction on cuprous oxide serving as a template and trithiocyanuric acid to form a core-shell intermediate, removing the template through acid etching, and reconstructing to obtain the final amorphous coordination polymer. The material simultaneously has high-efficiency peroxidase-like and glutathione-like oxidase double-enzyme activity, can synergistically catalyze hydrogen peroxide to generate hydroxyl radicals and consume glutathione, and can remarkably kill cancer cells by inducing a copper death mechanism in a tumor microenvironment. The material is unique in structure and excellent in catalytic performance, the preparation method is simple, convenient and controllable, and the material has wide application prospects in the fields of tumor catalytic treatment, bionic sensing and the like.

This invention provides an ultramicroporous porous coordination polymer, its preparation method, and its application in the adsorption and separation of carbon dioxide, relating to the field of novel materials for gas-phase adsorption and separation. The material is named TCE-NH2ipa, with the chemical formula [Co2(bpt)2(NH2ipa)2]. n In this method, Co represents the metal center cobalt, bpt represents the organic ligand 4-(3-pyridin-4-yl-1H-1,2,4-triazol-5-yl)pyridine, and NH2ipa represents the organic ligand 3-aminoisophthalic acid. The method involves fully dissolving bpt, NH2ipa, and Co(NO3)2·6H2O, transferring the solution to a pressure-resistant sealed container, and heating it for reaction. After the reaction is complete, solvent exchange and heating activation steps are performed to finally obtain a homogeneous powdered material. The TCE-NH2ipa material of this invention exhibits good adsorption capacity for carbon dioxide, hardly adsorbs nitrogen at room temperature and pressure, and can selectively adsorb carbon dioxide in an acetylene / carbon dioxide mixture, demonstrating excellent selectivity and scalability.

This invention belongs to the field of fertilizer additive technology, specifically relating to a Cu-containing additive. Ⅱ The coordination polymers, preparation methods, and applications are described. The preparation methods include: synthesizing N,N'-bis(3-pyridinecarboxamide)-1,2-ethane using nicotinic acid and 1,2-ethylenediamine as raw materials; and synthesizing Cu-containing polymers from N,N'-bis(3-pyridinecarboxamide)-1,2-ethane, CuCl2·2H2O, and 1,4-cyclohexane using a hydrothermal method. Ⅱ The coordination polymer [Cu(1,4-chdc)(3-dpye)]·3H2O is a blue crystal. The product prepared in this invention is used as a fertilizer additive in urea to reduce the conversion of urea N to ammonium nitrogen and ammonium nitrogen to nitrate nitrogen during urea application, thereby reducing the volatilization of NH3 into the air after urea application and the subsequent volatilization of N2O.

The invention relates to a preparation method of a dimer-mediated organic polymer single crystal, and belongs to the technical field of organic polymer single crystals. The preparation method comprises the following steps: S1, carrying out coordination self-assembly on a metal salt, an alkenyl pyridine ligand and an auxiliary ligand in a solvent, and washing and drying to obtain a coordination polymer single crystal reaction template; s2, under irradiation of ultraviolet light or visible light, the coordination polymer single-crystal reaction template is subjected to a [2 + 2] light ring addition reaction, and a coordination polymer containing a cyclobutane dimer is obtained; s3, under the action of alkali liquor or acid liquor, dissociating the coordination polymer containing the cyclobutane dimer, extracting, concentrating and recrystallizing to obtain dimer single crystals; s4, under the irradiation of ultraviolet light or visible light, carrying out topological chemical polymerization reaction on the dimer single crystal to obtain an organic polymer single crystal; accurate and controllable preparation from the alkenyl pyridine ligand to the high-quality polymer single crystal with the self-supporting long-range ordered structure is successfully realized.

The invention discloses a one-dimensional ring chain manganese coordination polymer as well as a preparation method and application thereof, and belongs to the technical field of complex synthesis and fluorescence detection. The preparation method comprises the following steps: reacting a bivalent manganese salt and 2-{2-[5-(4-pyridyl)-1H-1, 2, 4-triazole-3-yl] phenoxy} benzoic acid in a solvent, so as to prepare the one-dimensional ring chain type manganese coordination polymer. A solvothermal method is adopted for synthesis, the synthesis process is simple, the efficiency is high, the conditions are mild, and the obtained coordination polymer has good crystal stability and thermal stability, shows high-specificity and sensitive detection performance on furacilin and tetracycline, has application potential as an NFZ and TC specific fluorescent probe, and has wide application prospects. The problem that a rapid, convenient and economical nitrofurazone and tetracycline detection method is lacked in the prior art is solved, and experimental data and theoretical support are provided for designing and developing efficient fluorescent sensing materials for antibiotic pollutants.

This invention belongs to the technical field of antibacterial and antioxidant materials, and discloses a high-antibacterial and antioxidant nanoparticle based on an iron-zinc bimetallic coordination polymer, its preparation, and application. Method: 1) Polyvinylpyrrolidone is dissolved in an ethanol solution, followed by the addition of an ethanol solution of an iron salt. The pH is adjusted to 8-9, the stirring speed is increased, and an ethanol solution of tannic acid is added dropwise. After the addition is complete, stirring continues to obtain an iron-based tannic acid metal phenolic network; 2) An ethanol solution of zinc chloride is added to the iron-based tannic acid metal phenolic network, and the reaction is stirred for 8-12 hours to obtain high-antibacterial and antioxidant nanoparticles based on an iron-zinc metal coordination polymer. The method of this invention is simple, and the nanoparticles of this invention have good antioxidant and antibacterial effects. The nanoparticles are used to prepare antibacterial and antioxidant materials, particularly for the preparation of drugs for treating corneal ulcers.

The invention belongs to the technical field of fertilizer synergism, and particularly relates to a copper-based coordination polymer, a preparation method and application in nitrogen fertilizer synergism, and the method comprises the following steps: synthesizing N1, N4-bis (3-pyridyl)-2-butene amide by using 3-aminopyridine and fumaric acid as raw materials; and synthesizing the N1, N4-bis (3-pyridyl)-2-buteneamide, CuCl2. 2H2O and 5-nitroisophthalic acid into a new copper-based coordination polymer [Cu (3-bbpa) (5-NIPA)]. H2O by using a hydrothermal method, so as to obtain a blue fine crystal. The copper-based coordination polymer prepared by the invention can synchronously target a urease active center and a nitrifying microorganism functional unit, and a three-dimensional network structure of the copper-based coordination polymer not only enhances the stability of a material in soil, but also realizes double blocking of nitrogen conversion key enzyme through a multi-site synergistic effect.

This invention belongs to the field of high-entropy transition metal coordination polymer technology, specifically relating to a high-entropy Prussian blue material, its preparation method, and its applications. The invention involves dissolving various hydrated inorganic metal salts and sodium citrate complexing agent in water, slowly adding potassium ferricyanide solution dropwise to this solution, and then stirring for 30 min. The resulting solution is allowed to settle at room temperature for 24 h, washed three times by centrifugation with deionized water, and then washed three times by centrifugation with ethanol to obtain the high-entropy Prussian blue material Cu. 0.2 Ni 0.2 Co 0.2 Mn 0.2 Zn 0.2 (Fe(CN)6) 0.667 This invention yields a high-entropy Prussian blue electrocatalyst that is simple to synthesize, structurally stable, and uses readily available raw materials. This electrocatalyst can be applied to the electrocatalytic reduction of nitrate, laying the foundation for developing other high-entropy transition metal coordination compounds with framework structures as electrocatalysts for the electrocatalytic synthesis of value-added chemicals from nitrate.

The invention relates to the technical field of preparation of antibacterial materials, in particular to a two-dimensional nickel (II) coordination polymer as well as a preparation method and antibacterial application thereof. The preparation method comprises the following steps: mixing a dpb solution, a btc solution, a Ni (NO3) 2 solution, acetonitrile and water, carrying out a solvothermal reaction for 4-5 days, carrying out natural cooling crystallization, washing and drying to obtain [Ni3 (dpb) 2 (btc) 2 (H2O) 2] n, and according to the complex, nickel (II) has two coordination modes, and nickel (II) is coordinated with carboxyl oxygen atoms of two trimesic acid, oxygen atoms of two water molecules and nitrogen atoms of two ligands; nickel 2 (II) is coordinated with three nitrogen atoms of a ligand and three oxygen atoms of two trimesic acids to form a one-dimensional ladder-shaped chain structure, and the ladder-shaped chain is further bridged with the ligand to form a two-dimensional layered structure. The compound has very good thermal stability, has a good inhibition effect on staphylococcus aureus and escherichia coli, is non-toxic to human embryo kidney cells in 24 hours and 48 hours, and can be used as a bacteriostatic drug material carrier in the aspect of medicine.

The application discloses a luminescent coordination polymer crystal material based on a tetraphenylethylene pyridine ligand and a preparation method and application thereof, the chemical formula of the luminescent coordination polymer crystal material is [Cu(L)SCN.DMSO]n, wherein L is a 4.4'-[(2,2-diphenyl ethylene)di-4.1-phenylene]bis[pyridine] ligand, and n is an arbitrary value; wherein a Cu ion forms a two-dimensional structure with the 4.4'-[(2,2-diphenyl ethylene)di-4. n The crystal material can be used for fluorescence quenching detection of water-phase methyl orange; compared with the prior art, the crystal material is simple and reliable in application, the quenching constant of the crystal material for detecting water-phase methyl orange is as high as 1.9*10 6 M ‑1 , and the detection limit is as low as 0.019 mu M, so the crystal material is a luminescent coordination polymer crystal material for extremely sensitive detection of methyl orange at present and has a wide application prospect.

A method for producing a two-dimensional coordination polymer, a two-dimensional coordination polymer, and a solution for forming the two-dimensional coordination polymer. This method for producing a two-dimensional coordination polymer comprises: a preparation step for preparing a solution of a Ni compound, a Pd compound, or a Pt compound, or a solution of a Ni compound, a Pd compound, or a Pt compound, and preparing a solution of at least one of benzenehexanethiol, a derivative of benzenehexanethiol, or benzenehexanethiol and a derivative of benzenehexanethiol; and a polymer formation step in which a single-phase solution containing the Ni compound, the Pd compound or the Pt compound, and the benzene hexaphosphol is prepared, and a two-dimensional coordination polymer is prepared in the single-phase solution. The two-dimensional coordination polymer has a structural unit represented by formula (2) and a structural unit represented by formula (3). M1 is Ni or Pt, and M2 is Mn, Fe, Co, Ni, Cu, Zn, Pd or Ag.

The invention belongs to the technical field of fertilizer additives, and particularly relates to a CuII-containing coordination polymer and a preparation method and application thereof.The preparation method comprises the steps that N, N '-bis (3-pyridinecarboxamide)-1, 2-ethane is synthesized with nicotinic acid and 1, 2-ethylenediamine as raw materials; the preparation method comprises the following steps: synthesizing a coordination polymer [Cu (1, 4-chdc) (3-dpye)]. 3H2O containing Cu II from N, N '-bis (3-pyridinecarboxamide)-1, 2-ethane, CuCl2. 2H2O and 1, 4-cycloadipic acid by using a hydrothermal method, so as to obtain a blue crystal. The product prepared by the invention is applied to urea as a fertilizer additive, so that the conversion of urea N to ammonium nitrogen and the conversion of ammonium nitrogen to nitrate nitrogen in the urea application process are reduced, and the volatilization of NH3 in the air and the subsequent volatilization of N2O after the urea is applied are reduced.

This invention discloses a method for constructing carrier-free NADH nanoparticles to restore the function of aging hepatocytes, the product, and its applications, belonging to the pharmaceutical field. The method includes preparing carrier-free nano-coordination polymer NADH-Gd using a reverse microemulsion method, followed by a two-step lipid modification process: first, DOPA modification, then DPPC, cholesterol, and DSPE-PEG. 5k NADH-PEG was synthesized by modification, with DSPE-PEG added during the modification process. 5k NADH-Gal is ultimately synthesized from NADH-Gal. NADH-Gal exhibits excellent hepatocyte targeting and can replenish NAD+ in senescent hepatocytes in the MASH environment. + The content is increased by adjusting... Aldh18a1 The expression of [a specific substance] regulates proline metabolism. Improved proline metabolism can restore mitochondrial function by promoting mitophagy and mitochondrial biosynthesis, thereby alleviating hepatocyte aging. Simultaneously, it reduces monocyte recruitment and hepatic stellate cells (HSCs), ultimately providing an effective treatment for MASH. This invention provides a novel strategy for the treatment of MASH.

The invention belongs to the technical field of fluorescence sensing, and particularly relates to a zinc-based coordination polymer based on a heterocyclic ligand and a preparation method and application thereof. The method comprises the following steps: dissolving 3, 7-dibromo-10H-phenothiazine, pyridine-4-boric acid and K2CO3 in a mixed solution of DMF (Dimethyl Formamide) and H2O, uniformly stirring, then adding tetrakis (triphenylphosphine) palladium, carrying out a heating reflux reaction under protective gas, removing a solvent after the reaction is finished, separating impurities, and purifying to obtain 3, 7-bis (4-pyridyl) phenothiazine; the preparation method comprises the following steps: preparing a heterocyclic ligand, dissolving the heterocyclic ligand and zinc nitrate hexahydrate in a mixed solution of DMF and H2O, uniformly stirring, heating to react, and washing and drying after the reaction is finished to obtain the zinc-based coordination polymer based on the heterocyclic ligand. According to the present invention, by using the butterfly conformation and electron donating effect of the ligand molecule 3, 7-bis (4-pyridyl) phenothiazine and the coordination binding capacity synergistic effect of pyridine, the ligand molecule 3, 7-bis (4-pyridyl) phenothiazine is coordinated with zinc ions to construct the novel material with excellent luminescence property;

This present disclosure is directed to Ligating monomers and polymers prepared therefrom are described. Filter elements including the ligating polymers are further described as are the uses thereof for separation of adeno-associated viruses containing a DNA payload ("full AAV") from adeno-associated viruses without a DNA payload ("empty AAV").