CN116396653B - Method for preparing metal-organic polymer coating based on latticed supermolecular monomer - Google Patents
Method for preparing metal-organic polymer coating based on latticed supermolecular monomer Download PDFInfo
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- CN116396653B CN116396653B CN202310503798.0A CN202310503798A CN116396653B CN 116396653 B CN116396653 B CN 116396653B CN 202310503798 A CN202310503798 A CN 202310503798A CN 116396653 B CN116396653 B CN 116396653B
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- 229920000620 organic polymer Polymers 0.000 title claims abstract description 72
- 239000000178 monomer Substances 0.000 title claims abstract description 67
- 238000000576 coating method Methods 0.000 title claims abstract description 56
- 239000011248 coating agent Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 34
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003446 ligand Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000007864 aqueous solution Substances 0.000 claims abstract description 15
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 7
- 150000003254 radicals Chemical class 0.000 claims abstract description 7
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000000524 functional group Chemical group 0.000 claims abstract description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 114
- 239000000243 solution Substances 0.000 claims description 69
- 239000000047 product Substances 0.000 claims description 55
- 238000003756 stirring Methods 0.000 claims description 54
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 44
- 239000007787 solid Substances 0.000 claims description 38
- 238000005303 weighing Methods 0.000 claims description 33
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 31
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 26
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000010992 reflux Methods 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000012074 organic phase Substances 0.000 claims description 21
- 239000002244 precipitate Substances 0.000 claims description 20
- 238000002390 rotary evaporation Methods 0.000 claims description 20
- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 18
- HDZGCSFEDULWCS-UHFFFAOYSA-N monomethylhydrazine Chemical compound CNN HDZGCSFEDULWCS-UHFFFAOYSA-N 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- NWINIEGDLHHNLH-UHFFFAOYSA-N 2-methyl-1h-quinolin-4-one Chemical compound C1=CC=CC2=NC(C)=CC(O)=C21 NWINIEGDLHHNLH-UHFFFAOYSA-N 0.000 claims description 14
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000012043 crude product Substances 0.000 claims description 13
- 238000004090 dissolution Methods 0.000 claims description 13
- 239000003960 organic solvent Substances 0.000 claims description 13
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 10
- ZRZHXNCATOYMJH-UHFFFAOYSA-N 1-(chloromethyl)-4-ethenylbenzene Chemical compound ClCC1=CC=C(C=C)C=C1 ZRZHXNCATOYMJH-UHFFFAOYSA-N 0.000 claims description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical class [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 10
- 239000008346 aqueous phase Substances 0.000 claims description 10
- 239000012071 phase Substances 0.000 claims description 10
- 238000000967 suction filtration Methods 0.000 claims description 10
- ZMLPZCGHASSGEA-UHFFFAOYSA-M zinc trifluoromethanesulfonate Chemical compound [Zn+2].[O-]S(=O)(=O)C(F)(F)F ZMLPZCGHASSGEA-UHFFFAOYSA-M 0.000 claims description 10
- CITILBVTAYEWKR-UHFFFAOYSA-L zinc trifluoromethanesulfonate Substances [Zn+2].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F CITILBVTAYEWKR-UHFFFAOYSA-L 0.000 claims description 10
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 9
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- XJPZKYIHCLDXST-UHFFFAOYSA-N 4,6-dichloropyrimidine Chemical compound ClC1=CC(Cl)=NC=N1 XJPZKYIHCLDXST-UHFFFAOYSA-N 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 239000000376 reactant Substances 0.000 claims description 8
- 239000005457 ice water Substances 0.000 claims description 7
- BRARRAHGNDUELT-UHFFFAOYSA-N 3-hydroxypicolinic acid Chemical compound OC(=O)C1=NC=CC=C1O BRARRAHGNDUELT-UHFFFAOYSA-N 0.000 claims description 6
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000010898 silica gel chromatography Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000012279 sodium borohydride Substances 0.000 claims description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 3
- 235000009518 sodium iodide Nutrition 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 21
- 229920000642 polymer Polymers 0.000 abstract description 10
- 239000002861 polymer material Substances 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000013110 organic ligand Substances 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000004821 distillation Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000000527 sonication Methods 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a method for preparing a metal-organic polymer coating based on a latticed supermolecular monomer, which relates to the technical field of metal-organic polymer materials and comprises the steps of modifying-CH=CH on an organic building unit 2 Obtaining ligand organic ligand L with polymerizable functional group 1 And L 2 With zinc ion composition to form [2 x 2 ]]The latticed supermolecular monomers G-WYU-1 and G-WYU-1 are further subjected to free radical copolymerization with the high molecular monomer butyl methacrylate to prepare the metal-organic polymer. According to the method for preparing the metal-organic polymer coating based on the grid-shaped supermolecular monomer, the grid-shaped supermolecular monomer can be efficiently combined into the polymer through free radical copolymerization, the polymer has good adhesive force, formability and water stability, a macroscopic, defect-free and independent coating is formed, cr (VI) ions in an aqueous solution can be adsorbed, and therefore more possibility is provided for the application of the metal-organic polymer on adsorption.
Description
Technical Field
The invention relates to the technical field of metal-organic polymer materials, in particular to a method for preparing a metal-organic polymer coating based on a latticed supermolecular monomer.
Background
Due to human factors, more and more chromium element flows into the drinking water environment, and more attention is paid. Particularly for the water body with small water yield and low Cr (VI) concentration, the traditional method is difficult to carry out large-scale treatment, and a material which can be adsorbed for a long time and can be recycled and cannot cause secondary pollution is needed, so that the adsorption of Cr (VI) in the water body by utilizing the metal-organic polymer material is a good choice.
For this purpose, the synthesis of ligands L having polymerizable functional groups is designed 1 And L 2 And the material is self-assembled with zinc ions to obtain a latticed supermolecular monomer, and then the latticed supermolecular monomer is subjected to free radical copolymerization with a high molecular monomer to obtain the metal-organic polymer, so that the capability and stability of the material for treating Cr (VI) are improved, and the practical application of the metal-organic polymer is possible.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: method for preparing metal-organic polymer coating based on latticed supermolecular monomer, and ligand L with polymerizable functional group is designed and synthesized 1 And L 2 The method comprises the steps of self-assembling with zinc ions to obtain latticed supermolecular monomers G-WYU-1 and G-WYU-2, carrying out free radical copolymerization on the latticed supermolecular monomers G-WYU-1 and G-WYU-2 and a high molecular monomer butyl methacrylate to obtain a metal-organic polymer, and finally drying to form a metal-organic polymer coating;
the method for preparing the metal-organic polymer coating comprises the following specific steps:
(1) Preparation of the grid-like supermolecular monomer G-WYU-1
S1, weighing 1.49g of 4, 6-dichloropyrimidine and measuring 5mL of methyl hydrazine, adding the mixture into a 10mL round bottom flask, refluxing and stirring the mixture at 85 ℃ for reaction for 6 hours, cooling the crude product to room temperature, removing the methyl hydrazine by rotary evaporation, adding a certain amount of potassium carbonate and chloroform, stirring the mixture at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product;
s2, weighing 1.59g of 4-hydroxy-2-methylquinoline, dissolving in 10mL of dimethyl sulfoxide solution, adding 0.40g of sodium hydroxide solid, stirring for dissolution, adding 1.83g of 4-chloromethyl styrene, reacting at room temperature for 12 hours, transferring the mixed solution into a large amount of ice water to obtain a large amount of precipitate, filtering, and drying in vacuum to obtain white solid;
s3, weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, adding 0.53g of selenium dioxide solid after dissolution, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding a saturated sodium bisulfite aqueous solution into the mixture, stirring, extracting to obtain a water phase, regulating the pH value, extracting the water phase with a dichloromethane solution, and collecting the organic phase and distilling under reduced pressure;
s4, weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain the ligand L 1 ；
S5, weighing 0.14g of zinc trifluoromethane sulfonate, dissolving in acetonitrile, and then adding 0.28g of ligand L 1 Stirring at room temperature for reaction for 1 hour, removing acetonitrile by rotary evaporation, and vacuum drying to obtain a grid supermolecular monomer G-WYU-1;
(2) Preparation of the grid-like supermolecular monomer G-WYU-2
S6, weighing 1.39g of 3-hydroxypyridine-2-carboxylic acid, adding into 10.0mL of ethanol solution, stirring for dissolution, slowly dropwise adding 1mL of thionyl chloride under the ice bath condition, heating to 80 ℃ for reflux reaction for 6 hours after dropwise adding is completed within 15 minutes, then distilling under reduced pressure to remove most of organic solvent, adding a small amount of distilled water, regulating pH value to obtain a large amount of white precipitate, filtering and drying in vacuum to obtain white solid;
s7, weighing 1.34g of the product obtained in the step S6, adding the product into 20mL of acetone solution, stirring and dissolving, adding 1.32g of potassium carbonate solid and 1.44g of sodium iodide, stirring and dissolving at 50 ℃, then adding 1.46g of 4-chloromethyl styrene, heating to 60 ℃, refluxing, stirring and reacting for 8 hours, and separating the obtained crude product by silica gel column chromatography;
s8, weighing 1.42g of the product obtained in the step S7, dissolving in 20mL of ethanol solution, slowly adding 0.38g of sodium borohydride solid under the ice bath condition, reacting for 24 hours at room temperature, adding saturated ammonium chloride aqueous solution under the ice bath condition, quenching, distilling under reduced pressure to remove the organic solvent, extracting with dichloromethane and water, collecting the organic phase, and distilling under reduced pressure to obtain pale yellow solid;
s9, weighing 0.96g of the product obtained in the step S8, dissolving in 5mL of 1, 4-dioxane solution, stirring for dissolution, adding 0.04g of selenium dioxide solid, heating to 80 ℃ for reflux stirring, reacting for 2 hours, distilling under reduced pressure, adding saturated sodium bisulphite aqueous solution into the mixture for stirring, extracting to obtain an aqueous phase, adjusting the pH value, extracting the aqueous phase with dichloromethane solution, and collecting an organic phase for distilling under reduced pressure;
s10, weighing 0.17g of the product in the step S1 and 0.50g of the product in the step S9, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain the ligand L 2 ；
S11: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 2 Stirring at room temperature for reaction for 1 hour, removing acetonitrile by rotary evaporation, and vacuum drying to obtain a grid supermolecular monomer G-WYU-2;
(3) Preparation of metal-organic polymers
S12, weighing 0.06g of butyl methacrylate BMA and 0.60mg of azodiisobutyronitrile AIBN into a 20mL round bottom flask, then adding acetonitrile solvents dissolved with different amounts of grid-like supermolecular monomers, completely dissolving and mixing reactants by ultrasonic, and then introducing N 2 Purging for 30 minutes and at N 2 Heating to 70 ℃ under atmosphere, continuously stirring and reacting for 12 hours, and heating for 30 minutes to obtain an acetonitrile solution of the metal-organic polymer, wherein the solution is sticky;
(4) Preparation of metal-organic polymer coatings
And S13, coating the acetonitrile solution of the metal-organic polymer obtained in the step S12 on a glass substrate, drying in a ventilation cabinet, and forming a uniform yellow coating on the substrate after two hours to obtain the metal-organic polymer coating prepared based on the grid supermolecular monomer.
Further optimizing the technical scheme, in the steps S3 and S9, the pH value is adjusted to 10 by adding saturated sodium carbonate solution.
In the step S3, the step S8 and the step S9, the amount of dichloromethane is 50mL, and the extraction times are three times.
In step S6, the pH is adjusted to 8 by adding saturated sodium carbonate solution.
In step S7, the acetone solution is dried with the solid potassium carbonate.
Further optimizing the technical scheme, in the step S7, the obtained crude product is separated by 200-300 mesh silica gel column chromatography, and the elution system is petroleum ether/ethyl acetate, and the volume ratio of petroleum ether/ethyl acetate is 4:1.
Further optimizing the technical scheme, in the steps S4, S5, S10 and S11, the yield of the obtained ligand and complex is calculated, and the yield of the ligand and complex is obtained.
Further optimizing the technical scheme, in the step S4, the ligand L 1 The structural formula of (2) is as follows:
further optimizing the technical scheme, in the step S10, the ligand L 2 The structural formula of (2) is as follows:
compared with the prior art, the invention provides a method for preparing a metal-organic polymer coating based on a grid-like supermolecular monomer, which has the following beneficial effects:
according to the method for preparing the metal-organic polymer coating based on the grid-shaped supermolecular monomer, the grid-shaped supermolecular monomer can be efficiently combined into the polymer through free radical copolymerization, and the polymer has good adhesive force, formability and water stability, so that a macroscopic, defect-free and independent coating is formed. Therefore, the combination of the advantages of the supermolecule and the polymer material has good practical significance for solving the problems of the processability, the adsorption separation and the like of the polymer, not only enriches the preparation means of the metal-organic polymer, but also provides more possibilities for the application of the metal-organic polymer as the adsorption material.
Drawings
FIG. 1 shows a ligand L in a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to the present invention 1 A flow diagram;
FIG. 2 shows ligand L in a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to the present invention 2 A flow diagram;
FIG. 3 is a schematic flow chart of a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to the present invention;
FIG. 4 is a comparison of the water resistance test of a metal-organic polymer in a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to the present invention;
FIG. 5 is a graph showing adsorption of Cr (VI) to a metal-organic polymer in a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 3, a method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer specifically comprises:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.59g of 4-hydroxy-2-methylquinoline was weighed and dissolved in 10mL of dimethyl sulfoxide solution, then 0.40g of sodium hydroxide solid was added and stirred for dissolution, and then 1.83g of 4-chloromethylstyrene was added. After 12 hours of reaction at room temperature, the mixed solution was transferred to a large amount of ice water to obtain a large amount of precipitate, which was filtered and dried in vacuo to obtain a white solid.
S3: weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, dissolving, adding 0.53g of selenium dioxide solid, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding saturated sodium bisulphite aqueous solution into the mixture, stirring, extracting to obtain a water phase, and adjusting the pH value. The aqueous phase was extracted with methylene chloride solution and the organic phase was collected by distillation under reduced pressure.
S4: weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain ligand L 1 。
S5: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 1 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to give a lattice complex G-WYU-1.
S6: 0.06G of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask, then acetonitrile solvent in which 0.015G of the lattice supermolecular monomer G-WYU-1 was dissolved was added, and the reactants were completely dissolved and mixed by ultrasonic waves. Then let in N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, giving an acetonitrile solution of the metal-organic polymer Poly (20G-WYU-1-BMA).
Example 2
A method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer comprises the following steps:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.59g of 4-hydroxy-2-methylquinoline was weighed and dissolved in 10mL of dimethyl sulfoxide solution, then 0.40g of sodium hydroxide solid was added and stirred for dissolution, and then 1.83g of 4-chloromethylstyrene was added. After 12 hours of reaction at room temperature, the mixed solution was transferred to a large amount of ice water to obtain a large amount of precipitate, which was filtered and dried in vacuo to obtain a white solid.
S3: weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, dissolving, adding 0.53g of selenium dioxide solid, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding saturated sodium bisulphite aqueous solution into the mixture, stirring, extracting to obtain a water phase, and adjusting the pH value. The aqueous phase was extracted with methylene chloride solution and the organic phase was collected by distillation under reduced pressure.
S4: weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain ligand L 1 。
S5: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 1 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to give a lattice complex G-WYU-1.
S6: 0.06G of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask, then acetonitrile solvent in which 0.040G of the lattice-like supermolecular monomer G-WYU-1 was dissolved was added, and the reactants were completely dissolved and mixed by ultrasonic. Subsequently lead toIn N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, giving an acetonitrile solution of the metal-organic polymer Poly (40G-WYU-1-BMA).
Example 3
A method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer comprises the following steps:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.59g of 4-hydroxy-2-methylquinoline was weighed and dissolved in 10mL of dimethyl sulfoxide solution, then 0.40g of sodium hydroxide solid was added and stirred for dissolution, and then 1.83g of 4-chloromethylstyrene was added. After 12 hours of reaction at room temperature, the mixed solution was transferred to a large amount of ice water to obtain a large amount of precipitate, which was filtered and dried in vacuo to obtain a white solid.
S3: weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, dissolving, adding 0.53g of selenium dioxide solid, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding saturated sodium bisulphite aqueous solution into the mixture, stirring, extracting to obtain a water phase, and adjusting the pH value. The aqueous phase was extracted with methylene chloride solution and the organic phase was collected by distillation under reduced pressure.
S4: weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain ligand L 1 。
S5: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 1 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to give a lattice complex G-WYU-1.
S6: 0.06G of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask, then acetonitrile solvent in which 0.090G of lattice supermolecular monomer G-WYU-1 was dissolved was added, and the reactants were completely dissolved and mixed by sonication. Then let in N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, giving an acetonitrile solution of the metal-organic polymer Poly (60G-WYU-1-BMA).
Example 4
A method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer comprises the following steps:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.39g of 3-hydroxypyridine-2-carboxylic acid was weighed into 10.0mL of ethanol solution, and dissolved by stirring. 1mL of thionyl chloride is slowly added dropwise under ice bath, and after the completion of the dropwise addition in 15 minutes, the temperature is raised to 80 ℃ for reflux reaction for 6 hours. Then, after most of the organic solvent is distilled off under reduced pressure, a small amount of distilled water is added to adjust the pH value, and a large amount of white precipitate is obtained. After filtration and vacuum drying a white solid was obtained.
S3: 1.34g of the product obtained in the step S6 was weighed out and added to 20mL of an acetone solution to be stirred and dissolved, and then 1.32g of a potassium carbonate solid and 1.44g of sodium iodide were added to be stirred and dissolved at 50 ℃. Then, 1.46g of 4-chloromethyl styrene was added thereto, the temperature was raised to 60℃and the mixture was refluxed, and the reaction was stirred for 8 hours to obtain a crude product, which was subjected to silica gel column chromatography.
S4: 1.42g of the product from step S7 was weighed out and dissolved in 20mL of ethanol solution, and 0.38g of sodium borohydride solid was slowly added under ice bath conditions. The reaction is carried out for 24 hours at room temperature, saturated ammonium chloride aqueous solution is added under the ice bath condition for quenching, then the organic solvent is removed by reduced pressure distillation, dichloromethane and water are used for extraction, and the organic phase is collected for reduced pressure distillation to obtain pale yellow solid.
S5: 0.96g of the product obtained in the step S8 was weighed and dissolved in 5mL of 1, 4-dioxane solution, followed by stirring. Then 0.04g of selenium dioxide solid is added, and the temperature is raised to 80 ℃ for reflux stirring. After 2 hours of reaction, distillation was carried out under reduced pressure, a saturated aqueous solution of sodium hydrogensulfite was added to the mixture and stirred, and after extraction to obtain a water phase, adjustment of pH was carried out. Finally, the aqueous phase is extracted by methylene dichloride solution, and the organic phase is collected for reduced pressure distillation.
S6: weighing 0.17g of the product in the step S1 and 0.50g of the product in the step S9, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain the ligand L 1 。
S7: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 2 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to obtain a lattice complex G-WYU-2.
S8: 0.06G of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask, then acetonitrile solvent in which 0.090G of lattice supermolecular monomer G-WYU-2 was dissolved was added, and the reactants were completely dissolved and mixed by sonication. Then let in N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, giving an acetonitrile solution of the metal-organic polymer Poly (60G-WYU-2-BMA).
Comparative example 1
A preparation method of a homopolymer coating comprises the following steps:
0.06g of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask and N was introduced 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, yielding an acetonitrile solution of homopolymer PBMA.
Comparative example 2
A method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer comprises the following steps:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.59g of 4-hydroxy-2-methylquinoline was weighed and dissolved in 10mL of dimethyl sulfoxide solution, then 0.40g of sodium hydroxide solid was added and stirred for dissolution, and then 1.83g of 4-chloromethylstyrene was added. After 12 hours of reaction at room temperature, the mixed solution was transferred to a large amount of ice water to obtain a large amount of precipitate, which was filtered and dried in vacuo to obtain a white solid.
S3: weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, dissolving, adding 0.53g of selenium dioxide solid, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding saturated sodium bisulphite aqueous solution into the mixture, stirring, extracting to obtain a water phase, and adjusting the pH value. The aqueous phase was extracted with methylene chloride solution and the organic phase was collected by distillation under reduced pressure.
S4: weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain ligand L 1 。
S5: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 1 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to give a lattice complex G-WYU-1.
S6: 0.06G of butyl methacrylate BMA and 0.60mg of azobisisobutyronitrile AIBN were weighed into a 20mL round bottom flask, then acetonitrile solvent in which 0.240G of the lattice supermolecular monomer G-WYU-1 was dissolved was added, and the reactants were completely dissolved and mixed by ultrasonic waves. Then let in N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours.After heating for 30 minutes, the solution became viscous, giving an acetonitrile solution of the metal-organic polymer Poly (80G-WYU-1-BMA).
Comparative example 3
A method for preparing a metal-organic polymer coating based on a grid-shaped supermolecular monomer comprises the following steps:
s1: 1.49g of 4, 6-dichloropyrimidine and 5mL of methyl hydrazine were weighed into a 10mL round bottom flask, and reacted at 85℃under reflux with stirring for 6 hours. The crude product was then cooled to room temperature and methyl hydrazine was removed by rotary evaporation. Adding a certain amount of potassium carbonate and chloroform, stirring at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product.
S2: 1.59g of 4-hydroxy-2-methylquinoline was weighed and dissolved in 10mL of dimethyl sulfoxide solution, then 0.40g of sodium hydroxide solid was added and stirred for dissolution, and then 1.83g of 4-chloromethylstyrene was added. After 12 hours of reaction at room temperature, the mixed solution was transferred to a large amount of ice water to obtain a large amount of precipitate, which was filtered and dried in vacuo to obtain a white solid.
S3: weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, dissolving, adding 0.53g of selenium dioxide solid, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding saturated sodium bisulphite aqueous solution into the mixture, stirring, extracting to obtain a water phase, and adjusting the pH value. The aqueous phase was extracted with methylene chloride solution and the organic phase was collected by distillation under reduced pressure.
S4: weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain ligand L 1 。
S5: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 1 After stirring and reacting for 1 hour at room temperature, acetonitrile was removed by spin evaporation, and the mixture was dried in vacuo to give a lattice complex G-WYU-1.
S6: 0.60mg of azobisisobutyronitrile AIBN was weighed into a 20mL round bottom flask and then added with 0.090g dissolved thereinAcetonitrile solvent of the grid supermolecular monomer G-WYU-1 is used for completely dissolving and mixing reactants by ultrasonic. Then let in N 2 Purging for 30 minutes and at N 2 The reaction was heated to 70℃under an atmosphere and stirred continuously for 12 hours. After heating for 30 minutes, the solution became viscous, and an acetonitrile solution of the metal-organic polymer Poly (G-WYU-1) was obtained.
Applications in relation to the adsorption properties and stability of the product:
the metal-organic polymer prepared by the invention can be suitable for various base materials such as glass, paper, ceramic tile, concrete, fabric and the like, and can be coated by adopting methods of coating, dipping, spraying and the like. The following test details: and (3) coating the metal-organic polymer on a glass substrate, performing two-time coating, and then placing the glass substrate in a ventilation cabinet for 2 hours until the solvent volatilizes, so that a flat coating can be formed on the surface of the substrate. After curing for 7 days, tests for water resistance and Cr (VI) adsorption were performed.
The product performance test structures of examples 1-5, comparative examples 1-2 are shown in the following table:
FIG. 4 is a comparative graph of the coating after water resistance testing. As can be seen from FIG. 4, the surface roughness of the Poly (80G-WYU-1-BMA) coating of comparative example 2 and the Poly (G-WYU-1) coating of comparative example 3 was large before soaking, but the coatings were uniformly applied to the substrate surface. And after 1 day of soaking, the coatings of Poly (80G-WYU-1-BMA) and Poly (G-WYU-1) were peeled off due to the low proportion of organic monomer BMA in the coating, resulting in poor adhesion to the substrate. On the other hand, the combination of the lattice-like supermolecular monomer with BMA can improve the solubility of the metal-organic polymer while also avoiding orange peel on the surface of the PBMA coating of comparative example 1. The stability and adhesion of the metal-organic polymer can be improved by adding BMA as a comonomer in a proper proportion, wherein the incorporation amount of the supermolecular monomer is 20.0 to 60.0wt.% of the metal-organic polymer can exhibit excellent stability.
FIG. 5 is a metal-organic polymer coatingThe adsorption profile of the layer on Cr (VI) in aqueous solution. As can be seen from fig. 5, the adsorption rate of the metal-organic polymer was faster in the first 180 minutes, and gradually slowed down with the lapse of time, and finally reached the adsorption equilibrium. Of these, the Poly (G-WYU-1) of comparative example 3 had the highest adsorption capacity, and the adsorption rate was significantly increased 10 minutes before adsorption due to the high concentration of Cr (VI) solution and the more adsorption sites on the surface; as the adsorbable sites and the concentration of Cr (VI) in the solution decrease, the adsorption rate decreases, eventually reaching an equilibrium state after 90 minutes. However, as the content of the polymer monomer increased, the adsorption amount was 83.44 mg.g from Poly (G-WYU-1) of comparative example 2 -1 Gradually decreasing to 2.39mg G of Poly (20G-WYU-1-BMA) of example 1 -1 And the time required to reach adsorption equilibrium is gradually prolonged from 90 minutes to 720 minutes, which indicates that incorporation of the organic monomer causes the exposed metal sites in the lattice-like supermolecular monomer to be embedded into the polymer network, making Cr (VI) difficult to be trapped by the metal sites, and slowing down the diffusion rate of Cr (VI) in the metal-organic polymer. The adsorption performance of the Poly (60G-WYU-1-BMA) of example 3 on Cr (VI) is significantly better than that of the Poly (60G-WYU-2-BMA) of example 4, but the adsorption mechanism is the same and still exhibits superior stability.
The beneficial effects of the invention are as follows:
according to the method for preparing the metal-organic polymer coating based on the grid-shaped supermolecular monomer, the grid-shaped supermolecular monomer can be efficiently combined into the polymer through free radical copolymerization, and the polymer has good adhesive force, formability and water stability, so that a macroscopic, defect-free and independent coating is formed. Therefore, the combination of the advantages of the supermolecule and the polymer material has good practical significance for solving the problems of the processability, the adsorption separation and the like of the polymer, not only enriches the preparation means of the metal-organic polymer, but also provides more possibilities for the application of the metal-organic polymer as the adsorption material.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A process for preparing metal-organic polymer coatings based on lattice-like supermolecular monomers, characterized in that ligands L having polymerizable functional groups are designed and synthesized 1 And L 2 The method comprises the steps of self-assembling with zinc ions to obtain latticed supermolecular monomers G-WYU-1 and G-WYU-2, carrying out free radical copolymerization on the latticed supermolecular monomers G-WYU-1 and G-WYU-2 and a high molecular monomer butyl methacrylate to obtain a metal-organic polymer, and finally drying to form a metal-organic polymer coating;
the method for preparing the metal-organic polymer coating comprises the following specific steps:
(1) Preparation of the grid-like supermolecular monomer G-WYU-1
S1, weighing 1.49g of 4, 6-dichloropyrimidine and measuring 5mL of methyl hydrazine, adding the mixture into a 10mL round bottom flask, refluxing and stirring the mixture at 85 ℃ for reaction for 6 hours, cooling the crude product to room temperature, removing the methyl hydrazine by rotary evaporation, adding a certain amount of potassium carbonate and chloroform, stirring the mixture at room temperature for 15 minutes, separating an organic phase after thorough mixing, and removing chloroform by rotary evaporation to obtain a product;
s2, weighing 1.59g of 4-hydroxy-2-methylquinoline, dissolving in 10mL of dimethyl sulfoxide solution, adding 0.40g of sodium hydroxide solid, stirring for dissolution, adding 1.83g of 4-chloromethyl styrene, reacting at room temperature for 12 hours, transferring the mixed solution into a large amount of ice water to obtain a large amount of precipitate, filtering, and drying in vacuum to obtain white solid;
s3, weighing the product in the step S2, adding the product into 5mL of 1, 4-dioxane solvent, adding 0.53g of selenium dioxide solid after dissolution, heating to 70 ℃ for reflux reaction for 3 hours, distilling the mixed solution under reduced pressure to remove the organic solvent, adding a saturated sodium bisulfite aqueous solution into the mixture, stirring, extracting to obtain a water phase, regulating the pH value, extracting the water phase with a dichloromethane solution, and collecting the organic phase and distilling under reduced pressure;
s4, weighing 0.17g of the product in the step S1 and 0.61g of the product in the step S3, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain the ligand L 1 ；
S5, weighing 0.14g of zinc trifluoromethane sulfonate, dissolving in acetonitrile, and then adding 0.28g of ligand L 1 Stirring at room temperature for reaction for 1 hour, removing acetonitrile by rotary evaporation, and vacuum drying to obtain a grid supermolecular monomer G-WYU-1;
(2) Preparation of the grid-like supermolecular monomer G-WYU-2
S6, weighing 1.39g of 3-hydroxypyridine-2-carboxylic acid, adding into 10.0mL of ethanol solution, stirring for dissolution, slowly dropwise adding 1mL of thionyl chloride under the ice bath condition, heating to 80 ℃ for reflux reaction for 6 hours after dropwise adding is completed within 15 minutes, then distilling under reduced pressure to remove most of organic solvent, adding a small amount of distilled water, regulating pH value to obtain a large amount of white precipitate, filtering and drying in vacuum to obtain white solid;
s7, weighing 1.34g of the product obtained in the step S6, adding the product into 20mL of acetone solution, stirring and dissolving, adding 1.32g of potassium carbonate solid and 1.44g of sodium iodide, stirring and dissolving at 50 ℃, then adding 1.46g of 4-chloromethyl styrene, heating to 60 ℃, refluxing, stirring and reacting for 8 hours, and separating the obtained crude product by silica gel column chromatography;
s8, weighing 1.42g of the product obtained in the step S7, dissolving in 20mL of ethanol solution, slowly adding 0.38g of sodium borohydride solid under the ice bath condition, reacting for 24 hours at room temperature, adding saturated ammonium chloride aqueous solution under the ice bath condition, quenching, distilling under reduced pressure to remove the organic solvent, extracting with dichloromethane and water, collecting the organic phase, and distilling under reduced pressure to obtain pale yellow solid;
s9, weighing 0.96g of the product obtained in the step S8, dissolving in 5mL of 1, 4-dioxane solution, stirring for dissolution, adding 0.04g of selenium dioxide solid, heating to 80 ℃ for reflux stirring, reacting for 2 hours, distilling under reduced pressure, adding saturated sodium bisulphite aqueous solution into the mixture for stirring, extracting to obtain an aqueous phase, adjusting the pH value, extracting the aqueous phase with dichloromethane solution, and collecting an organic phase for distilling under reduced pressure;
s10, weighing 0.17g of the product in the step S1 and 0.50g of the product in the step S9, dissolving in 10mL of ethanol solution, reacting for 12 hours at room temperature to generate a large amount of precipitate, and performing suction filtration and drying to obtain the ligand L 2 ；
S11: 0.14g of zinc trifluoromethane sulfonate was weighed out and dissolved in acetonitrile, followed by the addition of 0.28g of ligand L 2 Stirring at room temperature for reaction for 1 hour, removing acetonitrile by rotary evaporation, and vacuum drying to obtain a grid supermolecular monomer G-WYU-2;
(3) Preparation of metal-organic polymers
S12, weighing 0.06g of butyl methacrylate BMA and 0.60mg of azodiisobutyronitrile AIBN into a 20mL round bottom flask, then adding acetonitrile solvents dissolved with different amounts of grid-like supermolecular monomers, completely dissolving and mixing reactants by ultrasonic, and then introducing N 2 Purging for 30 minutes and at N 2 Heating to 70 ℃ under atmosphere, continuously stirring and reacting for 12 hours, and heating for 30 minutes to obtain an acetonitrile solution of the metal-organic polymer, wherein the solution is sticky;
(4) Preparation of metal-organic polymer coatings
And S13, coating the acetonitrile solution of the metal-organic polymer obtained in the step S12 on a glass substrate, drying in a ventilation cabinet, and forming a uniform yellow coating on the substrate after two hours to obtain the metal-organic polymer coating prepared based on the grid supermolecular monomer.
2. The method for preparing a metal-organic polymer coating based on lattice-like supermolecular monomers according to claim 1, wherein in the steps S3 and S9, the pH is adjusted to 10 by adding saturated sodium carbonate solution.
3. The method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to claim 1, wherein in the steps S3, S8 and S9, the amount of dichloromethane is 50mL, and the number of extractions is three.
4. The method for preparing a metal-organic polymer coating based on lattice-like supermolecular monomers according to claim 1, wherein in step S6, the pH is adjusted to 8 by adding saturated sodium carbonate solution.
5. The method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to claim 1, wherein in step S7, the acetone solution is first dried with a solid potassium carbonate.
6. The method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to claim 1, wherein in the step S7, the obtained crude product is separated by 200-300 mesh silica gel column chromatography, and the eluting system is petroleum ether/ethyl acetate, and the volume ratio of petroleum ether/ethyl acetate is 4:1.
7. The method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to claim 1, wherein the steps S4, S5, S10 and S11 are performed with productivity calculation for the obtained ligand and complex, resulting in productivity of the ligand and complex.
8. According to claim 1Is characterized in that in the step S4, the ligand L 1 The structural formula of (2) is as follows:
9. the method for preparing a metal-organic polymer coating based on a lattice-like supermolecular monomer according to claim 1, wherein in the step S10, the ligand L 2 The structural formula of (2) is as follows:
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| CN104031256A (en) * | 2014-05-15 | 2014-09-10 | 昆明理工大学 | Method for preparing polycarbonate |
| CN108659708A (en) * | 2018-05-11 | 2018-10-16 | 深圳市鸿美特科技有限公司 | A kind of metal antirusting agent and preparation method thereof meeting spraying adhesive force |
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