54 results about "Coordination polymerization" patented technology

This invention relates to the application of hypergravity technology in coordination polymerization, and discloses a method for preparing hyperbranched polyethylene and its application. The method includes: (1) carrying out coordination polymerization of ethylene monomer, solvent, catalyst solution, and auxiliary catalyst solution under hypergravity conditions; and (2) removing the monomer, washing, separating, and drying the reaction product obtained in step (1). By controlling the hypergravity level, reactant ratio, reaction temperature, and pressure, this invention can obtain high-quality hyperbranched polyethylene products with a number-average molecular weight of 1000-1500000 and a molecular weight distribution index of 1.2-2.5. Compared with reactions in ordinary polymerization reactors, the production efficiency is significantly improved, and the product has a higher molecular weight and a narrower molecular weight distribution.

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 application relates to a high-conductivity double-carbazole type two-dimensional conductive metal organic framework material, a preparation method and application thereof, and belongs to the field of metal organic framework materials. Three double-carbazole type two-dimensional conductive metal organic framework materials Cu-DCA-MOF, Cu-DCPy-MOF and Cu-DCPt-MOF are prepared, all of which have a special "rotor-stator" structure, and are obtained by coordination polymerization of double-carbazole type ligands and metal ions. Due to the special "rotor-stator" structure of the double-carbazole type ligands, the three materials have high crystallinity and high conductivity, and have important significance in enriching the types and structural diversity of two-dimensional conductive metal organic framework materials. In addition, the double-carbazole type two-dimensional conductive metal organic framework materials with high conductivity can be applied in potassium ion batteries, and provide a new idea and solution for the development of positive electrode materials of the potassium ion batteries.

Olefin coordination polymerization catalyst, wherein the catalyst consists of a primary catalyst mainly composed of a magnesium compound, a transition metal halide, a C 2-15 -alcohol and an electron donor in a molar ratio of 1:13-35:0.3-8.5:0.45-1.7, and a co-catalyst which is an organoaluminium compound, where the molar ratio of the transition metal halide to the co-catalyst is 1:10-500, wherein the electron donor is a four-armed organoheteroether compound, and the four-armed organoheteroether compound is selected from at least one of the following compounds wherein the magnesium compound is selected from magnesium dichloride or magnesium diethoxide and the transition metal halide is selected from titanium tetrachloride.

The invention relates to the technical field of water treatment, in particular to a charcoal-loaded lanthanum metal organic framework composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing biochar and an organic solvent to obtain a biochar solution; the preparation method comprises the following steps: mixing lanthanum salt, an organic ligand and an organic solvent to obtain a LaMOFs precursor solution; mixing the charcoal solution, the LaMOFs precursor solution, triethylamine and N-dimethylformamide, and carrying out coordination polymerization reaction to obtain a polymer solution; and finally, completing oriented growth of the LaMOFs in the polymer solution under a closed condition, and sequentially carrying out solid-liquid separation, washing and drying after the oriented growth is finished, so as to obtain the composite material. The composite material prepared by the method has larger specific surface area, wider pH application range, higher adsorption capacity and excellent anti-interference capability. In the fluorine-containing photovoltaic wastewater, the composite material has a relatively high fluorine removal rate and has good recycling performance.

The invention relates to the technical field of nano materials, in particular to a preparation method of a Zn-based bimetal MOFs material and application of the Zn-based bimetal MOFs material as a medical drug carrying material. The preparation method comprises the following steps: preparing Zn, Mn and a ligand according to a molar ratio of 1: 1: (72-80), and mainly comprises the steps of preparation of metal salt solutions, coordination polymerization reaction, separation and purification, and drying. The process for preparing the Zn-based bimetallic MOFs material is simple and environmentally friendly, the obtained product has the excellent performance of being small in particle size, regular and stable, and the material loaded with doxorubicin hydrochloride has high loading rate and has potential clinical conversion value.

The invention discloses an S-type heterojunction nano catalytic material as well as a preparation method and application thereof. The S-type heterojunction nano catalytic material is prepared from a ZrO2 nano frame as a carrier; the CdS semiconductor nano-particles are loaded on the surface of the ZrO2 nano-frame; the iron-based polymer is constructed on the surfaces of the CdS semiconductor nanoparticles in situ in a coordination polymerization manner; the CdS semiconductor nanoparticles and the iron-based polymer are in close interface contact with the surface of the ZrO2 nano-frame, and an S-channel heterojunction is directly constructed and formed. The S-type heterojunction nano catalytic material can effectively promote spatial separation and directional migration of photon-generated carriers, obviously inhibit electron-hole recombination, is beneficial to multi-electron reduction reaction of CO2, can highly selectively reduce CO2 into carbon monoxide, obviously inhibits hydrogen evolution side reaction, and improves the catalytic efficiency of the carbon monoxide. The method is suitable for the fields of visible light driven CO2 resource utilization, clean energy conversion and the like, and has a good application prospect.

The invention particularly relates to a porous metal organic framework material MOFs-based PVC high-volatile hydrocarbon conversion rate recovery method, which comprises the following steps: adsorbing PVC into MOFs by adopting an adsorption method of a porous uniform site catalyst, and pyrolyzing the adsorbed composite material, the uniform aperture and catalytic site distribution of the catalyst are realized by coordination polymerization of metal sites and organic ligands. The invention aims to solve the problems of low volatile hydrocarbon yield, complex side reaction and difficulty in realizing high-value product conversion in the existing PVC cracking method.

The application discloses a reactive macromolecular dielectric reinforcing agent, a polypropylene composite material and preparation and application thereof. The application prepares an activated macromolecular dielectric reinforcing agent through a free radical polymerization reaction of an acrylamide type polar monomer, wherein 1,3-butadiene is used for end capping; then, the activated macromolecular dielectric reinforcing agent is reacted with ethylene to obtain a reactive macromolecular dielectric reinforcing agent. The application also adds the reactive macromolecular dielectric reinforcing agent into a polypropylene polymerization reaction to prepare a polypropylene composite material with a high dielectric constant through coordination polymerization. The application macromolecularizes an amide group, can obviously improve the compatibility of a polar group amide group and non-polar polypropylene, solves the problems of precipitation, dispersion and uneven dispersion of the polar group amide group in a polypropylene matrix, endows the polypropylene composite material with the characteristics of high efficiency and durability of dielectric properties, and is suitable for being used in related products, such as thin film capacitors and lithium battery separators, which need a high dielectric constant.

This invention discloses a Pb(II) coordination polymer catalytic electrode, its preparation method, and its application, belonging to the field of flow battery electrode materials and electrochemical energy storage technology. The catalytic electrode uses an acid-washed carbon felt electrode as a substrate, and nanoscale Pb-based polymers are grown in situ on the surface of the carbon felt substrate via ultrasonic chemical deposition. 2+ A polymer catalyst layer formed by coordination polymerization with nitrogen-containing organic ligands. The preparation method involves acid washing pretreatment of the original carbon felt electrode, mixing lead source solution and iodine source solution under ultrasonic conditions to obtain a lead-containing intermediate reaction system, then placing the acid-washed carbon felt electrode in the lead-containing intermediate reaction system, adding a nitrogen-containing organic ligand solution, and then in-situ polymerizing the Pb(II) metal-organic coordination polymer on the carbon felt fiber surface under ultrasonic conditions. This catalyst electrode can improve the effective active area and mass transfer accessibility of the electrode, maintain good structural stability under acidic conditions, and enhance the coulombic efficiency and long-term cycling stability of iron-chromium redox flow batteries.

The invention relates to a stabilizer for odorless artificial leather, a preparation method of the stabilizer, a coating laminating material composition for PVC artificial leather, a corresponding coating laminating material for the PVC artificial leather and the PVC artificial leather. The preparation method comprises the following steps: selecting an alpha-olefin dimer from a polyolefin coordination polymerization light component byproduct, designing and synthesizing a polyol ester stabilizer with a branched long carbon chain on the basis of the alpha-olefin dimer, and reacting with zinc acetate to introduce Zn < 2 + > to form a coordinate bond with hydroxyl to prepare the alpha-olefin dimer-polyol ester-zinc composite stabilizer. Wherein the alpha olefin dimer has a branched non-polar carbon chain structure and is used for reducing the degree of crystallinity of PVC, the alpha olefin dimer is matched with the isophthalate plasticizer for use, so that the low-temperature flexibility of the PVC composite resin can be improved, the alpha olefin dimer is used as a resin bonding agent for PVC artificial leather, the polyhydric alcohol part is chelated with Zn < 2 + > and is used for absorbing HCl released by PVC, and the stability of a PVC product is improved. Meanwhile, the molecular weight and boiling point of the polyol ester stabilizer are higher, and the polyol ester stabilizer has lower odor.

The invention discloses a multi-element energy storage aggregation dynamic optimization method and apparatus, and an electronic device. The method comprises the steps of obtaining target parameter data sorted based on a time sequence; based on the target parameter data, calculating an influence factor of the current moment on the target parameter of the next moment; based on the influence factor, the absolute error between the photovoltaic output of the sending-end power grid at the first moment and the local load, and the load energy state parameters under the first voltage level and the second voltage level at the first moment; determining an absolute error between the photovoltaic output of the sending-end power grid at the next moment of the first moment and a local load and load energy state parameter predicted values under the first voltage level and the second voltage level; and calculating an index prediction value of the multi-level power grid multi-element energy storage energy coordination aggregation demand at the next moment based on the prediction value. The photovoltaic power supply and load fluctuation of the power grid can be predicted, so that the energy storage load state of the power grid is adjusted, and the stability of energy coordination of each stored energy of the multi-stage power grid is ensured.

The invention particularly relates to a porous metal organic framework material MOFs-based PVC high-volatile hydrocarbon conversion rate recovery method, which comprises the following steps: adsorbing PVC into MOFs by adopting an adsorption method of a porous uniform site catalyst, and pyrolyzing the adsorbed composite material, the uniform aperture and catalytic site distribution of the catalyst are realized by coordination polymerization of metal sites and organic ligands. The invention aims to solve the problems of low volatile hydrocarbon yield, complex side reaction and difficulty in realizing high-value product conversion in the existing PVC cracking method.

The invention relates to a metal organic framework (MOF) modified composite ultrafiltration membrane and a preparation method thereof. The method comprises the following steps: sequentially immersing a base membrane in a zirconium metal precursor solution and an amino ligand solution, realizing in-situ growth of UiO-66-NH2 on the base membrane through a coordination polymerization reaction, and then carrying out surface chemical grafting by utilizing a polycarboxylic acid activator solution to prepare the UiO-66-NH2-g composite ultrafiltration membrane. According to the invention, a functionalized UiO-66-NH2 structure is introduced into a membrane matrix and is covalently connected with a polycarboxyl ligand, so that the chelating removal capability on divalent heavy metal ions in water is remarkably enhanced on the basis of maintaining relatively high water flux. The method effectively solves the problem that heavy metal is difficult to remove due to the fact that the aperture of a traditional ultrafiltration membrane is not matched with the size of metal ions, and collaborative improvement of the water flux and the heavy metal removal performance is achieved.

The invention discloses CdS nano-particles with controllable lattice strain and a preparation method and application thereof, and relates to the technical field of electrocatalysts.The preparation method of the CdS nano-particles comprises the following steps that 1, a cadmium source and a sulfur source are subjected to a coordination polymerization reaction, and a precursor is obtained; and (2) carrying out hydrothermal reaction on the precursor to obtain the CdS nanoparticles. The coordination polymer is used as a precursor, controllable decomposition of the ligand is achieved by adjusting the hydrothermal reaction temperature, C and N co-doped CdS is induced in the hydrothermal reaction process, 0-10% controllable tensile strain is spontaneously formed in crystal lattices of the C and N co-doped CdS, and therefore excellent catalytic activity is shown in the reaction for preparing CO through electro-catalysis CO2 reduction.

The application relates to a butanedione ligand compound, a metal complex of the butanedione ligand compound, a metal catalyst composition and application thereof, and belongs to the technical field of catalysts. The ligand compound has a structural formula shown in formula I, wherein R1, R2, R3, R4 and R5 are independently selected from hydrogen, halogen, substituted or unsubstituted C1-C 30 alkyl, substituted or unsubstituted C6-C 30 aryl, substituted or unsubstituted C3-C 30 heterocyclyl, substituted or unsubstituted C1-C 30 alkoxy, substituted or unsubstituted C6-C 50 fused ring group; when the alkyl, aryl, heterocyclyl or fused ring group is substituted, the substituent is at least one selected from C1-C 60 alkoxy, C1-C 60 alkyl, C1-C 60 fluoroalkyl, nitro and halogen. The butanedione ligand compound of the application selects the skeleton with a Lewis base of butanedione to control the steric hindrance, and the butanedione has a strong electron-withdrawing effect, which is beneficial to the coordination polymerization of subsequent olefin monomers.

The invention discloses a method for obtaining different polar monomer copolymers and homopolymers through a catalyst composition, and particularly provides a catalyst composition composed of alkyl aluminum, organic boron salt and a catalyst. The composition can catalyze a block copolymerization reaction between a polymer with a repetitive unit as shown in a formula IV and a compound M to obtain a block copolymer III, the compound M can also be catalyzed to be subjected to polymerization reaction to obtain a polymer I with a repetitive unit as shown in the formula A. According to the method, coordination polymerization of polar monomers can be efficiently catalyzed, the used catalyst is high in stability, and the homopolymer and the block copolymer which are clear in structure can be obtained at high yield; the obtained polymer has a high glass transition temperature, and part of the polymer presents a dual glass transition behavior. .

The invention discloses a diagnosis and treatment integrated multifunctional radioactive microsphere and a preparation method and application thereof.The preparation method comprises the steps that under the weak alkaline condition, pollen powder and a mixed solution containing polyphenol compounds and functional ligands are subjected to coordination polymerization, and pollen microspheres modified by polyphenol compound-functional ligand composite coatings are formed; further, the multifunctional radioactive microspheres which can be efficiently and stably marked by radionuclides are prepared. The microsphere has the functions of treatment, imaging and immune activation, has high radionuclide labeling efficiency, and can be stably retained in tumors for a long time; a clear ultrasonic high-echo signal is presented, and the specific radioactivity concentration of a tumor part is obvious during nuclide imaging. The diagnosis and treatment integrated platform is constructed on the basis of ultrasonic response and nuclide imaging, primary and metastatic tumors can be systematically inhibited when the diagnosis and treatment integrated platform is combined with immunotherapy, safety is good, and the diagnosis and treatment integrated platform has good clinical transformation potential.

The present invention provides a dinuclear vanadium catalyst containing a bis-NHC ligand, its preparation method and uses, and specifically relates to the fields of organometallic catalysts for olefin polymerization and olefin coordination polymerization. The general structural formula of the dinuclear vanadium catalyst containing a bis-NHC ligand is shown as follows: #imgabs0#. In the general structural formula, the structural formula of Linker is: #imgabs1# or #imgabs2# or #imgabs3#; wherein, R1, R2, R3, R4, R5 are each independently selected from any one of a hydrogen atom, an alkyl group, a fluorine atom, and a phenyl group, and R´1, R´2, R´3, R´4, R´5 correspond to R1, R2, R3, R4, R5 one by one. The dinuclear vanadium catalyst containing a bis-NHC ligand of the present invention is used for catalyzing the homopolymerization of ethylene and its copolymerization with polar olefin monomers. By introducing an NHC ligand with strong electron-donating ability and relatively high thermal stability, a stable compound can be formed with transition metal vanadium, so that it is not easily decomposed during the catalytic reaction process and is not easily poisoned and inactivated by polar monomers, thereby improving the catalytic efficiency and obtaining functionalized polyolefin materials.

This invention belongs to the field of olefin polymerization and relates to a conjugated diene coordination polymerization system and its application. It includes a cobalt compound (A), an organoaluminum compound (B), a silicon-containing compound (C), a conjugated diene monomer (D), and a solvent (E). In this cobalt-based catalytic conjugated diene polymerization system, the silicon-containing compound acts as both a catalyst component and participates in the polymerization reaction, effectively improving the catalytic activity of the polymerization reaction and allowing for adjustment of the microstructure content within a certain range.

The invention provides a 1, 1-disubstituted olefin anhydride product as well as preparation and application thereof. According to the present invention, the 1, 1-disubstituted olefin anhydridization product is obtained through the cyclic reaction of 1, 1-disubstituted olefin and maleic anhydride, and the 1, 1-disubstituted olefin comprises the light component by-product alpha olefin coordination oligomer formed during the coordination polymerization process of alpha olefin, such that the application field of the alpha olefin coordination oligomer is expanded, and the utilization value of the alpha olefin coordination oligomer is improved.

The application discloses a reactive macromolecular dielectric reinforcing agent, a polypropylene composite material and preparation and application thereof. The unsaturated carboxylic acid and the acrylamide polar monomer are polymerized to obtain the activated macromolecular dielectric reinforcing agent with high polarity; then the reactive macromolecular dielectric reinforcing agent is obtained by polymerizing with ethylene. The reactive macromolecular dielectric reinforcing agent is added into the polypropylene polymerization reaction to prepare the polypropylene composite material with high dielectric constant by coordination polymerization. The macromolecular dielectric reinforcing agent is realized, the uniformity and regularity of the polar group carboxyl and amide group distributed on the polypropylene molecular segment are improved, and the polypropylene composite material is endowed with the characteristics of high efficiency and durability of dielectric properties.

The invention relates to the technical field of nanofiber thin film materials, in particular to a preparation method of a flower-shaped metal organic framework compound high-temperature-resistant composite filter membrane. The preparation method comprises the following steps: (1) preparing a polyimide nanofiber film through electrostatic spinning; (2) interface adhesion of a metal ion-polyphenol network; (3) preparing a polyimide grafted ZIF-8 composite film; (4) soaking the polyimide nanofiber film prepared in the step (3) in a zinc nitrate aqueous solution, stirring at normal temperature, washing away redundant zinc ions, and continuously soaking in a low-concentration aqueous solution of 2-methylimidazole for coordination polymerization; and (5) repeating the steps (3)-(4) for multiple times, so that the ZIF-8 crystals grow on the surfaces of the fibers in situ in a flower-like form, and the high-temperature-resistant composite filter membrane is prepared. The composite filter membrane prepared by the preparation method is resistant to high temperature and uniform in gap distribution, the filtering efficiency reaches 99.98% or above, the piezoresistance is lower than 150 Pa, and the application effect in the field of filtering separation is remarkable.

The invention discloses a method for covalently binding a double-bond-containing metal coordination polymer with sulfur molecules and application of the double-bond-containing metal coordination polymer in a positive electrode of a lithium-sulfur battery, and belongs to the technical field of lithium-sulfur batteries. The preparation method comprises the following steps: reacting acryloyl chloride with amino groups on tetraaminobenzene to obtain double-bond modified BTA molecules, adding bacterial cellulose turbid liquid, then adding a nickel chloride hexahydrate aqueous solution, stirring, dropwise adding stronger ammonia water to initiate coordination polymerization, washing and freeze-drying to obtain BTA-ACry-Ni-coated BC aerogel; and enabling elemental sulfur and the BTA-ACry-Ni-BC aerogel to trigger sulfur vapor molecule ring opening at a high temperature under the condition that the elemental sulfur and the BTA-ACry-Ni-BC aerogel are not in contact with each other, and then reacting with double bonds to obtain the BTA-ACry-Ni-BC-S composite material covalently bound with sulfur molecules. The prepared sulfur covalent binding metal coordination polymer plays an important role in inhibiting dissolution of polysulfide and accelerating conversion of active substances, and is beneficial to preparation of advanced energy storage devices with large energy storage capacity, high coulombic efficiency and long cycle life.

The invention discloses a preparation method of an electronic-grade high-purity nickel aminosulfonate solution, which comprises the following steps: preparing a functional composite membrane: taking a porous polysulfone support membrane as a substrate, and forming a boron-nitrogen coordination polymer coating on the surface of the porous polysulfone support membrane through interfacial polymerization; then, a graphite-like phase carbon nitride layer grows on the surface of the coating through in-situ roasting; then grafting a phosphorus-sulfur synergistic chelating agent to the surface of the coating through ester exchange reaction; and finally, spraying fluorine modified silane and carrying out activating treatment to obtain the functional composite membrane. Carrying out integrated refining; regenerating and recycling the membrane; according to the preparation method disclosed by the invention, the fully non-metallic element functional composite membrane consisting of the boron-nitrogen coordination polymer, the graphite-like carbon nitride photocatalytic layer, the phosphorus-sulfur synergistic chelating agent and the fluorinated layer is innovatively designed and prepared and is combined with a customized integrated refining process; and synchronous and deep removal of various different-property impurities in a single process is realized.

The present application relates to a kind of preparation method and slow-release bacteriostatic application of pentazocine coordination polymer.The coordination polymer is with zinc as central metal, ligand is pentazocine and HCOO-R-COOH, wherein, R is selected from at least one of benzene ring, heterocycle and aliphatic group, constitute double-ligand type coordination polymer.A kind of preparation method of coordination polymer, it is the preparation method of any above-mentioned coordination polymer.Zinc salt, the HCOO-R-COOH and the pentazocine are sequentially added in DMF aqueous solution, under the condition of 0~200 ℃ oil bath, stirring 0.1~72 h, obtain the coordination polymer.The zinc salt includes at least one of zinc chloride, zinc sulfate and zinc nitrate.The coordination polymer of the present application has super high fungicide load, has excellent bactericidal effect and better ultraviolet light stability, shows double response release in the aspects of pH value and temperature.

The invention discloses a sensing platform based on an Eu-MOF metal organic framework and application of the sensing platform in visual detection of cortisol, the sensing platform contains a multi-emission fluorescent probe based on the Eu-MOF metal organic framework, and the fluorescent probe is obtained by coordination polymerization of 1, 3, 5-tri (4-carboxyphenyl) benzene and EuCl3. 6H2O; the red fluorescent material has the characteristic of generating dual emission at 454 nm and 615 nm under single-wavelength excitation (338 nm) so as to display red fluorescence. When cortisol is added into a sensing platform, the cortisol and the Eu-MOF metal organic framework form a compound, so that red fluorescence at 615 nm is reduced, blue fluorescence at 454 nm is gradually increased, a clear color change from red to blue is presented, corresponding color information can be identified through intelligent equipment, and then visual detection of the cortisol is realized. A novel sensing platform is provided for non-invasive measurement of the cortisol marker in the body fluid.

The invention relates to the technical field of oil product drag reducer preparation, in particular to a drag reducer and a preparation method and application thereof. The preparation method of the drag reducer comprises the following steps: by taking an alpha-olefin monomer and a silicon-based compound containing double bonds on the surface as raw materials, titanium tetrachloride as a main catalyst and aluminum alkyl as a cocatalyst, carrying out coordination polymerization reaction to form a copolymer of the alpha-olefin monomer and the silicon-based compound containing double bonds on the surface, thereby obtaining the drag reducer. The silicon-based compound with the double bonds on the surface and the alpha-olefin monomer are subjected to coordination copolymerization reaction, the double bonds contained in the silicon-based compound with the double bonds on the surface can promote smooth proceeding of the copolymerization reaction, and in addition, the silicon-based compound with the double bonds on the surface contains Si-O-Si bonds with large steric hindrance; the drag reducer can effectively avoid the poisoning effect of oxygen atoms on a catalyst, has rigidity, and effectively enhances the thermal stability and drag reduction effect of the drag reducer.

The present invention discloses a zinc coordination polymer, a preparation method thereof and an application thereof in detecting ceftazidime. The coordination polymer chemical formula is {[Zn(fipa)(3-bpdb)2} n , where fipa is a completely deprotonated organic bridging ligand 5-(furan-2-yl)isophthalate, 3-bpdb is an auxiliary ligand 1,4-bis(3-pyridyl)-2,3-dichloro-1,3-butadiene, n represents the degree of polymerization, which is a natural number; each four-coordinated metal Zn is at the center of a distorted tetrahedral geometry. 2+ The zinc coordination polymer is linked to two 1,4-bis(3-pyridyl)-2,3-dichloro-1,3-butadiene chains to form a V-shaped structure. This structure is then connected to a long-range, ordered one-dimensional chain structure along the a-axis by a deprotonated 5-(furan-2-yl)isophthalic acid group. Adjacent chains are connected by abundant hydrogen bonds (C−H···O) and π···π stacking interactions to form a three-dimensional supramolecular framework. The zinc coordination polymer can detect ceftazidime in water in a relatively short time, with high sensitivity, strong selectivity, and good thermal and water stability. It has great potential for the detection of ceftazidime antibiotics.

The present invention relates to a method for preparing a polyolefin-polystyrene-based multiblock copolymer having a uniform structure and showing excellent physical properties through continuous type coordination polymerization and batch type anionic polymerization.