Method for modifying covalent organic framework material

A covalent organic framework and modification technology, which is applied in the field of modification of covalent organic framework materials enriched in glycopeptides, can solve problems such as application limitations and difficulties, and achieve simple post-processing, increasing effect, and simple operation process Effect

Active Publication Date: 2019-06-28
WUHAN UNIV OF TECH
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Problems solved by technology

[0004] At present, the biggest challenge in the synthesis of COFs is the periodicity of the constructed functionalized COFs materials and the strength of the framework. While pursuing material stability and high specific surface area, it is still difficu...

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  • Method for modifying covalent organic framework material
  • Method for modifying covalent organic framework material
  • Method for modifying covalent organic framework material

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Embodiment Construction

[0029] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is now described in detail, but it should not be understood as limiting the scope of the present invention.

[0030] In the following examples, unless otherwise specified, all reagents used are commercially available chemical reagents.

[0031] This embodiment provides a method for preparing O-TPB-DMTA-COF by an oxidation method, comprising the following steps:

[0032] 1) 1,3,5-tris-(4-aminophenyl)benzene (TAPB) (0.080mmol, 28.1mg) and 2,5-dioxomethylterephthalaldehyde (DMTA) (0.120mmol, 23.3 mg) was added to a Pyrex tube (10ml), then o-dichlorobenzene / n-butanol (0.5 / 0.5ml) and acetic acid catalyst (6mol / l, 0.1ml) were added, and three times of freezing-pumping-thawing cycle, the tube was flame sealed and heated at 120°C for three days. The precipitate was collected by centrifugation, washed six ...

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Abstract

The invention provides a method for modifying a covalent organic framework material. The method comprises the following steps: (1) mixing 1,3,5-tris-(4-aminophenyl)benzene with 2,5-dioxymethyl-terephthalaldehyde, adding o-dichlorobenzene/n-butanol and an acetic acid catalyst, carrying out freezing-exhausting-unfreezing circulation for several times, carrying out flame sealing, heating, centrifugally collecting precipitates, washing, carrying out Soxhlet extraction, drying, and collecting powder, so as to obtain TPB-DMTA-COF; (2) adding 2-methyl-2-butene, a sodium chlorite water solution and glacial acetic acid into dioxane suspension liquid of the TPB-DMTA-COF powder, and stirring in a dark environment, so as to obtain purple solids; and (3) re-oxidizing the purple solids by virtue of thesodium chlorite water solution, and carrying out filtration separation, washing, drying, so as to obtain purple powder. The preparation method is simple, the synthesis conditions are easily controlled, and prepared O-TPB-DMTA-COF powder has a good glycopeptides enriching effect.

Description

technical field [0001] The invention belongs to porous crystalline functional materials, and in particular relates to a modified method for constructing a covalent organic framework material with better glycopeptide enrichment. Background technique [0002] COFs are crystalline materials formed by organic building units linked by covalent bonds and regularly expanded. Compared with amorphous porous material phase, crystalline material has incomparable advantages. The crystalline porous material has a uniform pore structure and a narrow pore size distribution, and has potential applications in catalysis and material separation. Since the synthesis of COFs is a reversible reaction controlled by thermodynamics, the geometric structure, function and stereo orientation of the material can be precisely controlled, and its connection mode can be clarified. The structure of the obtained material can be predicted by the method, and the pore size can also be adjusted by changing the...

Claims

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Application Information

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IPC IPC(8): C08G83/00C07K1/14
Inventor 张海宁张应杰
Owner WUHAN UNIV OF TECH
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