1289 results about "Coordination polymer" patented technology

The invention provides a preparation method of a nano porous metal oxide/carbon lithium ion battery cathode material. The preparation method comprises the following steps: firstly, weighting ferric salt or manganese salt and carboxylate organic ligands, and putting into a high-pressure reaction kettle; and after a polar solvent is added and dissolved, carrying out a hydrothermal reaction for 10-72h at 100-180 DEG C to generate a transition metal coordination polymer precursor; and after the transition metal coordination polymer precursor is washed and dried, decomposing the precursor for 0.5-6h at a temperature of 300-600 DEG C in an inert atmosphere in a tube furnace, thus obtaining a nano porous metal oxide/carbon lithium ion battery cathode material containing iron oxides or manganese oxides. According to the preparation method, since the transition metal coordination polymer precursor which is structurally designable and controllable is used as a template-type precursor, a nano porous metal oxide/carbon lithium ion battery cathode material is obtained by using an in-situ thermal decomposition method. The method is simple in process, and the obtained products have the advantages of high electrical conductivity, high specific capacity, good cycle stability, excellent high-ratio discharge performance and high energy density.

The invention provides a coordination polymer material with a multistage pore passage structure and a preparation method thereof. The coordination polymer material with a multistage pore passage structure is internally provided with the multistage pore passage structure, the multistage pore passage structure is a microporous and/or mesoporous and/or macroporous multistage pore passage structure which is formed by the self assembly between the metal ion and the organic ligand, the apertures of the micropores are less than or equal to 2nm, the apertures of the mesopores are from 2nm to 50nm, and the apertures of the macropores are more than 50nm. The coordination polymer material with a multistage pore passage structure is large in specific surface, the large-size organic ligand does not need to be synthesized, and the coordination polymer material with larger porous sizes can be obtained without the template agent and the pore assisting agent, so that the invention is simple in preparation method, and low in cost.

The invention discloses a layered metal coordination polymer and a synthesis method thereof, and belongs to the field of lithium ion battery electrode material preparation. The layered metal coordination polymer has a general formula of [ML'(4,4'-bpy)(L' ')2]. The synthesis method comprises that a metal ion salt and one or more organic ligands undergo a reaction in the presence of water, an organic solvent or a mixed system of water and the organic solvent to produce the layered metal coordination polymer. The layered metal coordination polymer can be used as a negative electrode material of a lithium ion battery, and has good cycling stability, a high specific capacity and wide application prospects in the field of lithium ion battery electrode materials. The synthesis method is simple, adopts easily available raw materials, has good technical repeatability, a high yield, safety, a low cost and a wide application range, and is suitable industrial production.

We describe the use of coordination polymers (CP) as coatings on microcantilevers for the detection of chemical analytes. CP exhibit changes in unit cell parameters upon adsorption of analytes, which will induce a stress in a static microcantilever upon which a CP layer is deposited. We also describe fabrication methods for depositing CP layers on surfaces.

The invention discloses a catalytic system used for synthesizing cyclic carbonate ester. The catalytic system comprises a catalyst with structural unit shown in formula I and quaternary ammonium salt shown in a general structure of formula II, wherein n is equal to 1-4 in the general structure of formula II. The catalytic system is suitable for catalyzing the reaction system in which carbon dioxide reacts with epoxy compound to synthesize the cyclic carbonate ester, in the reaction system, all the various epoxy compounds are applicable to the method, such as propylene oxide, epoxy chloropropane, styrene oxide, 2,3-glycidyl phenyl ether or cyclohexene oxide; the reaction temperature is 30-80 DEG C; the pressure of carbon dioxide is 2-12 MPa; and reaction time is 1-24 h. Compared with the conventional method, the catalytic system has the advantages of mild reaction condition, high recovery rate and high selectivity, and reuse of the major catalyst metal-organic coordination polymer (MOF-5) by simple filtration. Therefore, the catalytic system has strong industrial application value.

The invention relates to a benzothiazole derivatives metal coordination polymer based on a bridged bis-salicylaldehyde structure, characterized by having the following structure which is shown in the specification, wherein linker is CH2 or C(CH3)2, R is H+, halogen base, phenyl or biphenyl, and M is Zn2+, Be2+ or Ca2+. The benzothiazole derivatives metal coordination polymer has favorable thermal stability, good fluorescent emission performance and simple preparation method. The coordination polymer of the type can be applied to the organic electroluminescent material aspect.

The invention discloses a cadmium coordination polymer. The chemical formula of the cadmium coordination polymer is C60H36Cd3N12O17, 2,4,6-three(4-pyridyl) triazine serves as the main ligand of the cadmium coordination polymer, terephthalic acid serves as the auxiliary ligand of the cadmium coordination polymer, mixed liquor of N, N-dimethylformamide, ethyl alcohol and water serves as the solution, and accordingly a triple-interpenetrating three-dimensional 'tfz' topology network structure with an inner sealed hole is formed. The cadmium coordination polymer is prepared through the solvothermal method. The cadmium coordination polymer has the advantages that the coordination frame is high in thermal stability and water stability, and the light emitting performance of the cadmium coordination polymer can be controlled by packaging guest molecules with different functions. The manufacturing method of the cadmium coordination polymer has the advantages that the technology is simple in process and easy to apply, the crystal yield and purity are high, and the cadmium coordination polymer has good application prospect in the field of material science as an energy converter and a solid light-emitting material.

The invention provides a preparation method of a zirconium-based microporous coordination polymer. The preparation method includes: utilizing organic monocarboxylic acid which is simple as a regulator. The organic monocarboxylic acid can promote forming of a Zr6O4(OH)4(CO2)12 cluster, so that influence of water contained on Zr6O4(OH)4 is avoided, forming of Zr-MOF is facilitated, and quality of Zr-MOF is guaranteed. ZrO2+salt containing crystal water, such as ZrOCl2.8H2O is selected as zirconium salt, so that cost can be lowered, water in a trace amount can be guided in to promote generation of the Zr6O4(OH)4(CO2)12 cluster. A periodic adding mode is adopted, so that generation of a reactant can be accelerated, technical process can be shortened effectively, solvent utilization rate is increased, and reaction efficiency is improved finally; more importantly, product quality is guaranteed. The zirconium-based microporous coordination polymer is uniform in grain size, high in crystallinity, complete in shape and suitable for gas storage and separation and serving as a carrier. By using the method, quality such as crystallinity, specific surface area and grain size uniformity of Zr-MOF can be guaranteed, and the zirconium-based microporous coordination polymer is suitable for large-scale production.

The invention relates to a palladium coordination polymer molecule aggregate catalysis material as well as a preparation method and an application thereof. The catalysis material is a coordination polymer molecule aggregate catalysis material formed by self-assembling on the surface of a solid substrate, the precursor of the catalysis material comprises palladium coordination ion as well as pyridine containing multidentate ligand or high molecular ligand, wherein the palladium coordination ion is selected from one of tetrachloro combined palladium acid radical, dichloro-2, 2'-dipyridine palladous, and dichloroacetamide palladous, and the pyridine containing multidentate ligand or high molecular ligand is selected from one of 4, 4'-combined pyridine, 2, 4, 6- collidine triazine, metal or hollow tetra pyridyl porphyrin, trans-1, 2- collidine ethylene, combined dipyridylzinc thiocyanate and polyethylene pyridine. LB film preparation technology or layered assembly method is adopted for organism selective ethylenic bond organic hydrogenation reaction, thus having high catalysis efficiency, easy realization in separation of catalyst and reactant and product, convenient operation and low cost.

The invention belongs to the technical field of luminescent materials, and particularly relates to a zinc coordination polymer [Zn(HL)(HBPEB)] and a method of synthesizing the same. The zinc coordination polymer [Zn(HL)(HBPEB)] disclosed by the invention is a photo-induced yellow fluorescent material having a molecular structure shown below. The invention also provides a method of synthesizing the zinc coordination polymer [Zn(HL)(HBPEB)]. The zinc coordination polymer [Zn(HL)(HBPEB)] is prepared from zinc nitrate, ligand H4L and BPEB by using a solvothermal synthesis method. The zinc coordination polymer [Zn(HL)(HBPEB)] has higher thermal stability and is a novel photo-induced yellow fluorescent material.

The invention relates to a rare-earth organic coordination polymer, and a preparation method and application thereof. The rare-earth organic coordination polymer has the following chemical formula: {(bpy)[Re(ip)1.5(H2O)4]}n, wherein bpy is 4,4'-bipyridyl, ip is isophthalic acid divalent negative ions, Re is one or more of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, Y and the like,and n is degree of polymerization. A hydro (solvent)-thermal synthesis method is used for preparing the rare-earth organic coordination polymer, is environment-friendly and easy to operate, low in cost and high in yield, and is suitable for large-scale industrial production. The prepared rare-earth organic coordination polymer has the good application prospects in fields of luminescence, catalysis, adsorption, magnetism, ion exchange, high polymer material aids and the like.

The invention discloses a method for synthesizing 2,5-dihydroxymethylfuran by selective hydrogenation of 5-hydroxymethylfurfural. The method is characterized in that a magnetic metal-organic coordination polymer is used as an acid and base bifunctional catalyst, low-price and easily-obtained low carbon alcohol is used as an in-situ hydrogen donor, and the 5-hydroxymethylfurfural is efficiently transformed into the 2,5-dihydroxymethylfuran by a selective transfer hydrogenation reaction under mild operation conditions and the maximum yield of the 2,5-dihydroxymethylfuran can be up to 98.6 percent. The magnetic metal organic coordination polymer used in the method disclosed by the invention has the advantages of relatively-high acid-base strength, more acid-base sites, relatively-large specific surface area and suitable pore size; in addition, the magnetic metal organic coordination polymer is simple in preparation process, is easy to separate and recover and shows excellent catalytic activity and catalytic stability. Furthermore, the low carbon alcohol is used as the in-situ hydrogen donor in the invention, so that the use of molecular hydrogen is avoided and the safety of the reaction process is improved; besides, the low carbon alcohol can be used as a reaction solvent and the introduction of exogenous substances is reduced, and thereby the production cost can be further reduced.

The invention relates to a microporous and mesoporous organometallic compound as well as the preparation method thereof, and mainly provides an organometallic compound with multilevel pores, as well as the preparation method thereof. The preparation method comprises the following steps: metal inorganic salts and organic carboxylic acid coordination polymers are dissolved in water or an organic solvent; the mixed solution is crystallized for 10-100 hours under the condition that the temperature is 100-220 DEG C; after being naturally cooled down and taken out, the reaction product is taken out; the microporous and mesoporous organo-metallic compound is prepared through suction-filtering, washing, drying and baking. The preparation process of the invention is simple, the cost is low, and the microporous and mesoporous organo-metallic compound can be prepared under mild conditions. The prepared material with the multilevel pores has wide application prospect on aspects of adsorption, separation, catalysis, etc.

The invention relates to a terbium coordination polymer and its synthesis method and application, which belong to the field of organic light-emitting materials. The invention aims to solve the technical problem of short fluorescence lifetime of the existing terbium coordination polymers. The structure of the terbium coordination polymer is a three-dimensional supramolecular network structure formed by hydrogen bonding and π-π stacking between the one-dimensional chain terbium coordination polymers. The molecular formula of the one-dimensional chain terbium coordination polymer is Tb(2 , 2'-bpdc) 1.5H2O. Method: Dissolve terbium nitrate pentahydrate and 2,2′-biphenyldicarboxylic acid in distilled water at room temperature, stir to dissolve, place in a reaction kettle, heat for reaction, and naturally cool to room temperature to obtain terbium coordination polymer. In the present invention, the terbium coordination polymer is used as an organic green fluorescent material. Terbium coordination polymers are colorless single crystals. In the solid state at room temperature, with an excitation wavelength of 304nm, it exhibits the typical strong green fluorescence of rare earth terbium ions, with a longer fluorescence lifetime τ of 1004μs.

A coordination polymer includes a plurality of metal atoms or metal clusters linked together by a plurality of organic linking ligands. Each linking ligand comprises a residue of a negatively charged polydentate ligand. Characteristically, the plurality of multidentate ligands include a first linking ligand having first hydrocarbon backbone and a second ligand having a second hydrocarbon backbone. The first hydrocarbon backbone is different than the second hydrocarbon backbone.

The invention specifically relates to an azacyclocarbene metal coordination polymer and a preparation method thereof, and application of the azacyclocarbene metal coordination polymer as a catalyst, belonging to the technical field of preparation and application of heterogeneous catalysts. The azacyclocarbene metal coordination polymer provided in the invention has a general structural formula (I) and can be prepared by reacting a bis(imidazole) salt with a metal precursor under alkaline conditions and carrying out coordination assembling. The azacyclocarbene metal coordination polymer is applicable to catalysis of oxydehydrogenation of a variety of alcohols and derivatives thereof, carbohydrate compounds, cellulose or lignin and to high-efficiency preparation of lactic acid and derivatives thereof. The novel self-loaded catalytic system integrates the advantages of homogeneous catalysis and heterogeneous catalysis, and can realize high-efficiency, high-selectivity and considerable conversion of biomass polyol raw materials under mild conditions; and the catalyst has the advantages of high-efficiency recovery, repeated usability, etc., and has good application prospect in preparation of lactic acid and hydrogen by using industrial catalysis approaches.

The invention relates to a nickel-coordination polymer and a preparation method thereof. molecular formula of the complex is represented as {[Ni2(BPTC) (1,4-bib)2(H2O)]2}}n, wherein H4BPTC is 3,4,3',4'-biphenyl tetracarboxylic acid and 1,4-bib is 1,4-bisimidazolyl benzene. The preparation method of the complex comprises the steps of mixing the H4BPTC, the 1,4-bib and Ni(NO3)2.6H2O in water at a certain proportion, regulating pH value to 6.5, adding a mixing liquid in a 13ml polytetrafluoroethylene tube, stirring for 30min at room temperature, sealing the polytetrafluoroethylene tube in a stainless steel reaction kettle, crystallizing for 72 hours at 160 DEG C, naturally cooling to room temperature to separate out light blue granular crystals, washing the crystals through distilled water and pumping the crystals through a vacuum pump, wherein yield is above 78%. The complex, through nickel dimer units in the structure and weak ferromagnetic action between dimer metallic nickel ions, can serve as a molecular magnetic material.

The invention discloses a zinc coordination polymer as well as a preparation method and application thereof. According to the method, under a solvothermal condition, a zinc complex is prepared firstly, and then is doped with a small amount of cobalt ions, so that a doped complex is obtained. Compared with conventional method, the method disclosed by the invention has the advantages that a zinc complex catalyst doped with the small amount of cobalt ions is better in the reaction effect of catalyzing and light-degrading Rhodamine B, can realize recycling, and keep relatively high catalytic efficiency.

The invention provides a preparation method and application of a europium coordination polymer for visible detection on p-nitrophenol and iron ions, and belongs to the technical field of novel materials. The preparation method comprises the following step: under a hydrothermal or solvothermal condition, performing molecular self-assembly on metal europium ions, organic ligand and a structure-directing agent with additives, thereby synthesizing the europium coordination polymer. The europium coordination polymer is excellent in fluorescent sensing property for the p-nitrophenol and the iron ions; a piece of detection test paper can be prepared from the synthesized europium coordination polymer and a carrier in a compounding manner, and rapid, simple, convenient and visible detection on the p-nitrophenol and the iron ions can be achieved. Compared with the prior art, the prepared europium coordination polymer and the test paper can achieve selective detection on the p-nitrophenol and the iron ions, have the characteristics of low preparation cost and rapid and accurate detection, and have good application prospects.

The invention discloses a preparation method of a rare-earth coordination polymer fluorescence probe and an application of the rare-earth coordination polymer fluorescence probe in H2O2 and glucose detection and belongs to the technical field of optical sensing. The preparation method comprises steps as follows: triphosadenine is mixed with a Tris-HCl buffer solution containing Ce<3+>, and the rare-earth coordination polymer fluorescence probe ATP-Ce-Tris is prepared; when H2O2 is present in the solution, Ce<3+> in the ATP-Ce-Tris is oxidized into Ce<4+> by H2O2 to result in fluorescence quenching of the ATP-Ce-Tris, and accordingly, detection of H2O2 is realized; simple and sensitive detection of glucose is further realized through fluorescence quenching of the ATP-Ce-Tris due to H2O2 which is produced through catalytic oxidation of glucose by glucose oxidases.

The invention discloses a cuprum (II) coordination compound catalyst of selective catalytic oxidation thioether and a preparation method of the cuprum (II) coordination compound catalyst, and relates to the technical field of transition metal coordination polymers. The chemical formula of the coordination compound is as shown in the specification, wherein pasp is an N-(2-picolyl)-L(D)-aspartic acid negative ion ligand. A preparation process of the cuprum (II) coordination compound catalyst comprises the steps that cupric salt and N-(2-picolyl)-L(D)-aspartic acid are adopted as reaction raw materials to react in a volatilization condition at a room temperature, and a homochiral crystalline material is obtained. A synthetic method is mild in condition, high in yield, convenient to operate, and good in reproducibility. The reaction of adopting a sample of the coordination compound catalyst to oxidize different thioethers into corresponding sulphoxides is high in yield, and the cuprum (II) coordination compound catalyst is simple to prepare and facilitates large-scale popularization.

The invention discloses an application of a Eu coordination polymer, belonging to the technical field of ion detection and solving the technical problem that an existing coordination polymer fluorescence probe has poor selectivity to molecules and ions and low sensitivity. The Eu coordination polymer disclosed by the invention can be taken as the fluorescence probe to detect Fe<3+> by the following steps of: adding the Eu coordination polymer into an aqueous solution containing Fe<3+>, standing for 20-48 hours, then precipitating, washing and separating to obtain solids; and detecting the intensity of a characteristic emission peak of the solids by 350nm excitation wavelength at a site of 612nm, so as to detect the content of Fe<3+> in the aqueous solution. According to the application of the Eu coordination polymer, Fe<3+> in the aqueous solution can be quickly detected; the Eu coordination polymer has the advantages of high detection sensitivity, low detection limit and the like and is capable of detecting Fe<3+> under physiological conditions.

The invention pertains to the technical filed of molecular materials and chemical catalyzing, in particular to a molecular assembly material for a coordination polymer containing metalloporphyrin and a preparation method thereof. The assembly material is a multi-layer film formed on a solid base on an immiscible gas-liquid or solid-liquid interface by self-assembly technology; the formation and the structure of the assembly material can be adjusted and controlled by changing the reaction precursors (metal ions or the metalloporphyrin) of two phases. The material is fixed on the surface of the solid base in a film state, has the features of molecular material and nano material, thus having relatively high thermal and chemical stability and structural controllability as well as being able to serve as a heterogeneous catalyst with relatively high catalyzing efficiency used for the catalytic oxidation of organics. Meanwhile, the separation of the catalyst and products is extremely simple and a 'plug and play' mode of being able to stop or restart at any time during the process of a catalytic reaction can be realized, thus being extremely applicable to tracing and regulating a catalytic reaction process.

The invention discloses a micro-porous copper coordination polymer, a preparation method and application thereof. The copper coordination polymer of the invention is particularly a compound with the chemical formula being {[Cu(L)](DMF)(H2O)}, wherein, L represents the di-anion of 5-(1-tetrazolyl)-1,3-benzene dicarboxylic acid; and DMF represents N,N-dimethylformamide. The compound is prepared on the basis of solvent-thermal method, so that the purity of the obtained crystal is higher. The micro-porous copper coordination polymer of the invention can keep the coordination framework unchanged after the free solvent molecules are detached, larger one-dimensional channels can be shown in the a-axis direction of the crystal; furthermore, the compound has good thermal stability, and the compound has higher adsorbability of hydrogen under the conditions of either 77K normal pressure or high pressure, therefore, the copper coordination polymer is applicable as the adsorption material.