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Phenylboronic acid modified metal organic framework composite fiber and preparation method and application thereof

A metal-organic framework and composite fiber technology, applied in synthetic fibers, alkali metal compounds, animal fibers, etc., can solve the problems of limited specific surface area of ​​nanomaterials and polymers, limited immobilization of boronic acid groups, etc., and achieve adjustable pore size. and surface modification properties, good flexibility, mild conditions

Pending Publication Date: 2020-07-17
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​nanomaterials and polymers is limited, and the immobilization amount of boronic acid groups is limited. Therefore, it is necessary to develop new boronic acid-based functionalized materials.

Method used

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  • Phenylboronic acid modified metal organic framework composite fiber and preparation method and application thereof
  • Phenylboronic acid modified metal organic framework composite fiber and preparation method and application thereof
  • Phenylboronic acid modified metal organic framework composite fiber and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (a) Preparation and surface functionalization of CoCu-based MOF materials

[0069] ① Preparation of CoCu-MOF: Dissolve 0.83 g of 2-methylimidazole in 40 mL of methanol, and add the solution to 40 mL of 0.181 g of cobalt nitrate, 0.151 g of copper nitrate and 0.36 g of sodium lauryl sulfate under stirring at room temperature. In the methanol solvent, after 20 hours of reaction, the CoCu-MOF obtained by centrifugation, washing, drying and collection;

[0070] ② Weigh 100mg of CoCu-MOF sample and dissolve it in 100mL of ethylene glycol, blow nitrogen gas to remove oxygen, and use an ultrasonic cleaner to disperse evenly; ③ Measure 2ml of aminoethyltripropoxysilane reagent containing amino functional groups and dissolve Alcohol and added into the ② solution, functionalized self-assembly of the CoCu-MOF surface, fully washed with absolute ethanol, the CoCu bimetallic MOF material modified with alkoxysilane reagent containing functional groups was obtained.

[0071] (b) Prep...

Embodiment 2

[0078] (a) Preparation and surface functionalization of MnZn-based MOF materials

[0079] ① Preparation of MnZn-MOF: Dissolve 1.18 g of benzimidazole in a mixed solvent of 40 mL of DMF and water (volume ratio 5:3), and add the solution to 40 mL of 0.062 g of manganese nitrate and 0.223 g of nitric acid under stirring at room temperature. In a mixed solvent of zinc and 0.42 g of polypropyleneimine in DMF and water (volume ratio 5:3), after hydrothermal reaction at 150°C for 20 hours, the MnZn-MOF obtained by centrifugation, washing, drying, and collection;

[0080] ② Weigh 200 mg of MnZn-MOF sample and dissolve it in 100 ml of isopropanol, blow nitrogen gas to remove oxygen, and use an ultrasonic cleaner to disperse evenly; ③ Measure 3 ml of aminoethyltrimethoxysilane reagent containing amino functional groups and dissolve it in isopropanol Alcohol and added into the ② solution, the surface of MnZn-MOF was functionalized and self-assembled, and fully washed with absolute ethano...

Embodiment 3

[0088] (a) Preparation and surface functionalization of CoZn-based MOF materials

[0089] ① Preparation of CoZn-MOF: Dissolve 1.983 g of 2,5-dihydroxyterephthalic acid in a mixed solvent of 40 mL of DMF, ethanol and water (volume ratio 1:1:1), and add the solution to Into 40mL mixed solvent containing DMF, ethanol and water (volume ratio 1:1:1) of 0.161 gram of cobalt nitrate, 0.165 gram of zinc nitrate and 1.304 gram of polyvinyl alcohol, after hydrothermal reaction at 200 ℃ for 15 hours, by centrifugation, Cleaning, drying, and collecting the obtained CoZn-MOF;

[0090] ② Weigh 300 mg of CoZn-MOF sample and dissolve it in 100 ml of pentylene glycol, blow nitrogen gas to remove oxygen, and use an ultrasonic cleaner to disperse evenly; ③ Measure 4 ml of aminopropyl tripropropoxysilane reagent containing amino functional groups and dissolve Diol and added into the ② solution, the CoZn-MOF surface is functionalized and self-assembled, and the CoZn-MOF surface is fully washed wi...

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Abstract

The invention discloses a phenylboronic acid modified metal organic framework composite fiber and a preparation method and application thereof, and belongs to the technical field of composite materialpreparation. The preparation method comprises the following steps: performing surface functionalization on a bimetal-based MOF material so that the surface of the bimetal-based MOF material is modified with amino functional groups, adding the bimetal-based MOF material into a spinning precursor solution, carrying out electrostatic spinning, and finally introducing phenylboronic acid-based functional monomers into the surface of spinning fibers through a covalent cross-linking condensation reaction. The preparation method disclosed by the invention is simple, mild in condition, adjustable in morphology, controllable in structure and uniform in component distribution, compared with the prior art, the method has the advantages that the completeness of porous frame structures of the nanofibers and the MOF material is reserved, the excellent performance of the nanofibers and the MOF material is achieved, and meanwhile the nanofibers and the MOF material are modified by phenylboronic acid functional groups to serve as a novel functional nanomaterial to be used for recognizing, immobilizing, sensing, enriching or separating biomolecules containing cis-dihydroxy.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a phenylboronic acid-modified metal-organic framework composite fiber, a preparation method and an application. Background technique [0002] The boron affinity method is mainly to use the boronic acid group to reversibly covalently form a five-membered / six-membered ring lactone structure with a 1,2 / 1,3 o-hydroxyl structure, because it is simple to operate, non-biased, and does not destroy the glycoform structure The recognition of boric acid has been widely used in many fields such as separation science, intelligent response and controlled release, chemical / biological sensing, supramolecular assembly machine fixation and so on. However, the traditional phenylboronic acid monomer has low affinity and weak binding ability to cis-dihydroxy molecules, resulting in low selectivity for biomolecules such as glycoproteins. At present, the boronic acid...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28C08G83/00D01F8/08D01F8/10D01F8/16D01F8/18D06M13/123D06M13/127D06M13/51B01J20/30
CPCB01J20/226C08G83/008D01F8/16D01F8/08D01F8/10D01F8/18D06M13/51D06M13/123D06M13/127B01J20/28023D06M2101/30D06M2101/28D06M2101/10D06M2101/18
Inventor 丁永玲孙华东谭旭翔齐美丽陈敏张爱勤王保群
Owner SHANDONG JIAOTONG UNIV
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