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Synthesis method and application of a metal-organic framework material with a chiral hollow structure

A technology of organic framework and synthesis method, applied in organic chemistry methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of low material porosity, reduced catalytic activity, reduced degree of freedom of chiral active molecules, etc., and achieve good application Prospect, the effect of accelerating mass transfer

Active Publication Date: 2022-03-22
NANCHANG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a synthesis method and application of a metal-organic framework material with a chiral hollow structure, which can effectively solve the problems of reduced degrees of freedom of chiral active molecules, reduced catalytic activity, and material porosity existing in existing chiralized MOFs. low technical issues

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  • Synthesis method and application of a metal-organic framework material with a chiral hollow structure
  • Synthesis method and application of a metal-organic framework material with a chiral hollow structure
  • Synthesis method and application of a metal-organic framework material with a chiral hollow structure

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[0028] Such as figure 1 Shown, the present invention provides a kind of synthetic method of the metal-organic framework material of chiral hollow structure, comprising:

[0029] S10 prepares CPS (Chiralpolymer microspheres) from functionalized chiral salen-Mn(III) molecules, styrene and acrylic acid. Specifically, first, weigh functionalized chiral salen-Mn(III) molecules, styrene, acrylic acid, polyvinylpyrrolidone (PVP) and azobisisobutyronitrile (AIBN) in a certain mass ratio, wherein the functionalized Chiral salen-Mn(III) molecule, styrene and acrylic acid as raw materials, polyvinylpyrrolidone as dispersant, azobisisobutyronitrile as initiator, and functionalized chiral salen-Mn(III) molecule, styrene The mass ratio of polyvinylpyrrolidone, azobisisobutyronitrile and styrene is 2 to 3:50:5, and the mass ratio of acrylic acid is 3 to 10:1 to 2:80; the functionalized chiral salen-Mn( III) The molecular structure diagram is as follows:

[0030]

[0031] After that, ad...

Embodiment 1

[0036] Take 240 mg (mg) of functionalized salen Mn (III) chiral molecules, 4 mL (milliliters) of styrene, and 0.4 mL of acrylic acid, mix them, add them to a mixed solvent of 20 mL of deionized water and 40 mL of methanol, add 50 mg of initiator AIBN, 300 mg of PVP . Access to N 2 , heated at 70° C. for 12 hours with magnetic stirring, centrifuged, washed three times with absolute ethanol, and dried to obtain CPS microspheres.

[0037] Take 300 mg of CPS microspheres and ultrasonically disperse them uniformly in 120 mL of methanol, add 1.2 g of organic ligand 2-methylimidazole under the condition of magnetic stirring, and add 300 mg of zinc nitrate hexahydrate to methanol drop by drop with a constant pressure dropping funnel within 5 minutes. The solution was 10 mL, reacted at room temperature for 12 h, centrifuged, washed with methanol three times, and dried in vacuum at 60 °C to obtain CPS@MOFs.

[0038]Grind CPS@MOFs evenly, add 10mL DMF solvent, and dissolve at room temp...

Embodiment 2

[0043] Take 160 mg of functionalized salen Mn(III) chiral molecules, 4 mL of styrene, and 0.38 mL of acrylic acid, mix them, add them to a mixed solvent of 10 mL of deionized water and 20 mL of methanol, add 50 mg of initiator AIBN, and 300 mg of PVP. Access to N 2 , heated at 70° C. for 12 hours with magnetic stirring, centrifuged, washed three times with absolute ethanol, and dried to obtain CPS microspheres.

[0044] Take 500 mg of CPS microspheres and ultrasonically disperse them in 280 mL of methanol, add 4 g of organic ligand 2-methylimidazole under the condition of magnetic stirring, and add 20 mL of methanol solution of 500 mg of zinc nitrate hexahydrate drop by drop with a constant pressure dropping funnel within 5 minutes , reacted at room temperature for 12 h, centrifuged, washed three times with methanol, and dried in vacuum at 60 °C to obtain CPS@MOFs.

[0045] Grind CPS@MOFs evenly, add 25mL DMF solvent, and dissolve at room temperature for 5 days, during which ...

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Abstract

The invention discloses a synthesis method and application of a metal-organic framework material with a chiral hollow structure, wherein the synthesis method includes: S10 using functionalized chiral salen-Mn(III) molecules, styrene and acrylic acid as raw materials Chiralized polystyrene microspheres (CPS) were prepared; S20 used chiralized polystyrene microspheres as a template to uniformly grow metal-organic frameworks (CPS@MOFs) on the outside; S30 was dissolved in a polar solvent to remove the Polystyrene microsphere templates to obtain chiral hollow metal-organic frameworks (Void@CMOFs). In the metal-organic framework material with chiral hollow structure, chiral molecules are retained in the hollow MOFs cage, which not only retains the original degree of freedom and catalytic ability of chiral molecules, but also combines the characteristics of high porosity of MOF to accelerate the mass transfer.

Description

technical field [0001] The invention relates to the field of polymer microsphere template preparation and the self-assembly field of metal-organic framework compounds, in particular to a synthesis method and application of a metal-organic framework material with a chiral hollow structure. Background technique [0002] In recent years, metal-organic frameworks (MOFs) materials have been widely used in gas storage and separation, catalysis, fluorescence, bio-mass transfer, etc. due to their unique structural properties. Among the existing MOFs materials, chiral MOFs materials have been developed in the past ten years, especially with the increasing demand for chiral molecules in medicine and chemical industry, chiral MOFs with excellent synthesis performance are used for asymmetric catalytic synthesis , enantiomeric resolution is of great significance. [0003] At present, the methods for preparing chiral MOFs are generally divided into the following four types: 1) Direct syn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C07C33/22C07C29/88
CPCC08G83/008C07C29/88C07B2200/07C07C33/22
Inventor 陈超史顺利钟贻成汪淑华赵丹丁顺民
Owner NANCHANG UNIV
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