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Covalent triazine organic framework material as well as preparation method and application thereof

A technology of organic framework and covalent triazine, which is applied in the field of chemical materials, can solve the problems of high requirements for equipment conditions and inability to produce mass production well, and achieve the effects of low requirements for reaction conditions, easy batch synthesis, and safe operation

Active Publication Date: 2020-12-04
THE CHINESE UNIV OF HONG KONG SHENZHEN
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above-mentioned methods all have certain risks and complexities in the preparation process, and have high requirements for equipment conditions, so they cannot be mass-produced well

Method used

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  • Covalent triazine organic framework material as well as preparation method and application thereof
  • Covalent triazine organic framework material as well as preparation method and application thereof
  • Covalent triazine organic framework material as well as preparation method and application thereof

Examples

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preparation example Construction

[0058] The invention provides a method for preparing a covalent triazine organic framework (CTF) material, comprising:

[0059] Mixing and reacting raw materials including a covalent triazine organic framework (CTF) material precursor, a first solvent and a catalyst;

[0060] The reacted mixture was subjected to solid-liquid separation.

[0061] The above-mentioned first solvent includes at least one of dichloromethane (DCM), benzene and toluene; preferably, the amount of the first solvent is 4-10 times the total mass of the covalent triazine organic framework material precursor.

[0062] The above covalent triazine organic framework (CTF) material precursors include terephthalonitrile, methyl terephthalonitrile, isophthalonitrile, 1,3,5-benzenetrinitrile and 2,5-dicyanothiophene at least one of the

[0063] The above-mentioned catalyst includes trifluoromethanesulfonic acid (TFMS); the dosage of the catalyst is 1.4-2.4 times of the total mass of the precursor of the covalen...

Embodiment 1

[0080] (1) Place a clean reagent bottle (10mL) on the balance tray, add 1g of trifluoromethanesulfonic acid (TFMS) with a glass dropper, then add 2g of dichloromethane (DCM), and then add 0.5g of CTF For the precursor terephthalonitrile (DCB), after tightening the cap, shake and vibrate in the ultrasonic pool for about 2 minutes until the CTF precursor is completely dissolved. Then put the reagent bottle into a constant temperature oven, set the temperature at 50°C, and react for 24h.

[0081] (2) After the reaction in step (1), take out the reagent bottle, add about 10mL of DCM after cooling to room temperature, and then slowly add a small amount of N,N-dimethylformamide (DMF) dropwise to avoid a large amount of heat release Add the mixed solvent (1 / 1, v / v) of DCM / DMF subsequently, ultrasonic and stir, then with the centrifugal 20min of the rotating speed of 6000rpm; Add the mixed solvent (1 / 1 , v / v), sonicated and stirred, and centrifuged at 6000rpm for 20min. After repeati...

Embodiment 2

[0083] The difference between this example and Example 1 is that the amount of trifluoromethanesulfonic acid (TFMS) 1g is replaced by 0.8g, and the others are the same as Example 1.

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Abstract

The invention provides a covalent triazine organic framework material as well as a preparation method and application thereof. The preparation method comprises the following steps of: mixing raw materials including a covalent triazine organic framework material precursor, a first solvent and a catalyst, and performing a reaction on the mixture; and carrying out solid-liquid separation on the reacted mixture. According to the preparation method disclosed by the invention, by introducing the first solvent, the reaction rate and the viscosity of a reaction system are properly reduced, and the strong acting force between a triazine intermediate product and the catalyst is reduced, so that the triazine intermediate product can fully perform molecular motion nucleation through a conjugation effect, and a crystalline CTF material is easy to obtain; The preparation method is safe and convenient to operate, has low requirements on reaction devices and reaction conditions, and is easy for batchsynthesis; and the prepared CTF material has the advantages of high crystallinity and good thermal stability.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a covalent triazine organic framework material and its preparation method and application. Background technique [0002] The covalent triazine organic framework (CTF) material is a porous material with a stable framework structure bonded by covalent bonds, and has high thermally stable covalent triazine organic framework and chemical stability. CTF materials are mainly divided into crystalline and amorphous. Compared with amorphous CTF materials, crystalline CTF materials have better regularity and have broad application prospects in the fields of optoelectronics, heterogeneous catalysis, and electrochemistry. [0003] The preparation of crystalline CTF materials mainly includes high-temperature ionothermal method and solution reaction method. Among them, the high-temperature ionothermal method requires reactants and catalysts to be reacted in a sealed glass tube that has under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J32/00B01J35/10B01J20/22
CPCB01J31/0244B01J20/226B01J20/22B01J35/61
Inventor 朱世平黄凌琪朱贺
Owner THE CHINESE UNIV OF HONG KONG SHENZHEN
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