A kind of modification method of metal organic framework compound

A technology of metal-organic frameworks and compounds, which is applied in the field of modification of metal-organic framework compounds, can solve the problems that UiO-66 cannot be dissolved and limits the application field of UiO-66, and achieve the effect of improving water solubility and changing surface charge
CN108467491BActive Publication Date: 2020-07-31HARBIN INST OF TECH AT WEIHAI +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH AT WEIHAI
Publication Date
2020-07-31

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Abstract

The invention provides a method for modifying a metal-organic framework compound, belonging to the technical field of metal-organic frameworks. The invention is to solve the problem of limit of application fields of UiO-66 due to insolubilization of the UiO-66 in water. The method provided by the invention comprises the following steps: step 1, dispersing a metal-organic framework compound namelyUiO-66-NH2 in an organic solvent; step 2, adding an organic solvent solution of 2-bromoisobutyryl bromide and an organic solvent solution of triethylamine, and carrying out a reaction under heating under the protection of nitrogen; step 3, carrying out washing, then carrying out soaking with methanol, and carrying out cleaning, centrifugal separation and drying; step 4, dispersing an obtained material and sodium p-styrenesulfonate in water, adding a tris[2-(dimethylamino)ethyl]amine solution of copper bromide and a sodium ascorbate solution, carrying out a reaction, and carrying out centrifuging so as to obtain a clear liquid; and step 5, carrying out concentration, carrying out washing with methanol, repeatedly carrying out washing and concentration, and carrying out freeze-drying. The method provided by the invention increases the water solubility and surface charges of the UiO-66, and is applied to the fields of drug sustained release, pollutant adsorption, etc.
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Description

technical field

[0001] The invention belongs to the technical field of metal-organic frameworks; in particular, it relates to a method for modifying metal-organic framework compounds. Background technique

[0002] Metal-organic frameworks (Metal-Organic Frameworks), referred to as MOFs, are organic-inorganic hybrid materials with intramolecular pores formed by the self-assembly of organic ligands and metal ions or clusters through coordination bonds. Metal-organic framework material is a crystalline material with periodic network structure formed by self-assembly of metal ions or ion clusters and organic ligands. It is a promising zeolite (organic zeolite analog) material, which can Through the complexation of different metal ions and various rigid bridging organic ligands, metal-organic frameworks with different pore sizes are designed and synthesized, so that the structure of MOFs can be varied infinitely, and some functional properties can be carried on the organic ligand...

Claims

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