Porous organic material, preparation method thereof and application thereof

A porous organic material and organic technology, applied in the field of porous materials, can solve the problem of difficult to realize the preparation of porous organic materials with higher specific surface area

Active Publication Date: 2020-04-07
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that it is still difficult to achieve the preparation of porous organic materials with higher specific...

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  • Porous organic material, preparation method thereof and application thereof
  • Porous organic material, preparation method thereof and application thereof
  • Porous organic material, preparation method thereof and application thereof

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[0094] The invention provides a method for preparing a porous organic material, comprising the following steps:

[0095] Coupling and polymerization of organic monomers to obtain two-dimensional topological materials;

[0096] Mixing the two-dimensional topological material, catalyst, cross-linking agent and solvent, and performing a Friedel-Crafts reaction to obtain a porous organic material;

[0097] The organic monomer preferably includes one or more of aromatic halides, boronic acid substituted aromatic compounds, boronic acid pinacol ester substituted aromatic compounds, alkynyl substituted aromatic compounds and alkenyl substituted aromatic compounds.

[0098] In the present invention, unless otherwise specified, the raw materials of each component are commercially available products well known to those skilled in the art.

[0099] In the invention, organic monomers are subjected to coupling polymerization reaction to obtain two-dimensional topological materials.

[01...

Embodiment 1

[0124] Preparation of two-dimensional topological materials: 6 mmol of 1,3,5-tribromobenzene, 9 mmol of terephthalic acid and 300 mL of solvent DMF were stirred at room temperature to fully dissolve the raw materials of each component, and then 36 mmol of K 2 CO 3 Add to the mixed system, add 0.3mmol catalyst Pd(PhCN) under the condition of nitrogen protection 2 Cl 2 , pumping and exchanging air 3 times, after fully removing the air in the reaction system, react at 80°C for 12h, then raise the temperature to 120°C for 48h, after the reaction is completed, cool the reaction system down to room temperature, add water to quench, and filter with suction. After washing with ethanol and water, the filter cake was thoroughly stirred and washed in tetrahydrofuran, methanol, water and dichloromethane at 60°C, and dried in vacuum at 120°C to obtain a two-dimensional topological material (referred to as POF-Aa).

[0125] Preparation of porous organic materials: FeCl 3 As a Lewis acid ...

Embodiment 2

[0127] The two-dimensional topological material POF-Aa was prepared according to the method in Example 1.

[0128] Preparation of porous organic materials: AlCl 3 It is a Lewis acid catalyst, and dichloromethane is used as an external linking agent and solvent. Disperse 1.87g of POF-Aa in 200mL of dichloromethane solvent, stir well under nitrogen protection conditions to disperse, and then add 7.5mmol of catalyst to the reaction system , stirred at room temperature for 0.25h, then raised the temperature to 45°C for 1h, then raised the temperature to 80°C for 16h, after the reaction was completed, the reaction system was lowered to room temperature, quenched with hydrochloric acid aqueous solution, suction filtered, and rinsed with a large amount of ethanol and water. Subsequently, the filter cake was thoroughly stirred and washed in tetrahydrofuran, methanol, water and dichloromethane at 60°C, and finally extracted with methanol to remove trace impurities, and dried in vacuum ...

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Abstract

The invention belongs to the technical field of porous materials and particularly relates to a porous organic material, a preparation method thereof and application thereof. The invention provides thepreparation method of the porous organic material, the method comprises the following steps of carrying out coupled polymerization reaction on an organic monomer to obtain a two-dimensional topological material; mixing the two-dimensional topological material, a catalyst, an external cross-linking agent and a solvent, and carrying out a Friedel-Crafts reaction to obtain a porous organic material,wherein the organic monomer comprises one or more of an aromatic halide, a boric acid substituted aromatic compound, a boronic acid pinacol ester substituted aromatic compound, an alkynyl substitutedaromatic compound and an alkenyl substituted aromatic compound. According to the preparation method, the two-dimensional topological material with framework rigidity is prepared firstly, and then substituent groups are inserted into the middle of a rigid organic network of the two-dimensional topological material and are fixed through covalent bonds, so that the expansion of a porous framework inan original two-dimensional topological material is realized, and the specific surface area and porosity of the two-dimensional topological material are remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of porous materials, and in particular relates to a porous organic material and its preparation method and application. Background technique [0002] According to different types, porous organic materials are mainly divided into hypercrosslinked polymers, self-porous polymers, covalent organic framework materials, conjugated microporous polymers, covalent triazine framework materials and porous aromatic framework materials. Among them, the preparation cost of hypercrosslinked polymers is low, but the types of monomers are limited, so it is difficult to realize the preparation of hypercrosslinked polymers with higher specific surface area; self-porous polymers have excellent solubility, which is conducive to their separation in membranes. However, the lack of monomer types and low specific surface area still restrict its development; covalent organic framework materials have excellent long-range ordered struc...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 梁志强刘雨川宋晓伟王顺崔元正孟宪宇叶禹
Owner JILIN UNIV
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