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Method for synthesizing hydrogen bond covalent organogel material HCOG-2

A HCOG-2, covalent organic technology, used in gel preparation, chemical instruments and methods, colloid chemistry, etc., to achieve excellent thermal stability and large specific surface area.

Inactive Publication Date: 2019-01-18
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To the best of our knowledge, no reports have focused on the formation of COG induced by hydrogen bonds

Method used

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  • Method for synthesizing hydrogen bond covalent organogel material HCOG-2
  • Method for synthesizing hydrogen bond covalent organogel material HCOG-2
  • Method for synthesizing hydrogen bond covalent organogel material HCOG-2

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Experimental program
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Embodiment Construction

[0022] Synthetic H C The raw materials used in OG-2 are all commercially available products.

[0023] Such as figure 1 As shown, a hydrogen-bonded covalent organogel material H C Synthetic method of OG-2. Include the following steps:

[0024] Step 1: Weigh 50 mg of benzene-1,3,5-trihydrazide (BTCH) and dissolve it in 5 mL of organic solvent dimethyl sulfoxide (DMSO), keep its concentration at 0.02 mol / L, and name it A solution.

[0025] Step 2: Weigh 60mg of 4,4'-biphenyldicarbaldehyde (BPDA) and dissolve it in solution A, keep its concentration at 0.03mol / L, and name it solution B.

[0026] At this time, the molar ratio in the above solution B is: benzene-1,3,5-trihydrazide: 4,4’-biphenyldicarbaldehyde=2:3.

[0027] Step 3: Place the above B solution in a constant temperature oil bath, heat and react at 100° C. for 10 minutes to obtain a yellow gel.

[0028] Step 4: Put the yellow gel obtained in Step 3 into a dialysis bag, use distilled water as the dialysate, and remo...

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Abstract

The invention discloses a method for synthesizing a hydrogen bond covalent organogel material HCOG-2 and the method includes the steps of dissolving benzene-1,3,5-trihydrazide in an organic solvent dimethyl sulfoxide, keeping the concentration at 0.02mol / L, naming the solvent as solution A; dissolving 4,4'-biphenyldicarboxaldehyde in the solution A, keeping the concentration at 0.03mol / L, and naming the solution as solution B, wherein the molar ratio of the benzene-1,3,5-trihydrazide to the 4,4'-biphenyldicarboxaldehyde in the solution B is 2 to 3; putting the solution B in a constant-temperature oil bath pan, and heating the solution B at the temperature of 100 DEG C for 10 minutes of reaction to obtain yellow gel; putting the yellow gel in a dialysis bag, removing the organic solvent bydistilled water serving as the dialysate, and after 2-3 days, and taking out the dialysis bag when obvious stratification occurs in the dialysis bag to obtain a product; pouring the product into a beaker, freezing the product at a low temperature, and freeze-drying the product to obtain a hydrogen bond covalent organogel material HCOG-2. The HCOG-2 with an amorphous undefined structure has excellent thermal stability and larger specific surface area.

Description

technical field [0001] The invention belongs to the field of preparation of nanomaterials and environmental materials, and relates to a hydrogen bond covalent organic gel material H C Synthetic method of OG-2. H in it C OG is the English abbreviation of hydrogen-bonded covalent organogel, and the bar 2 is the number. Background technique [0002] Porous Organic Polymers (POPs), including crystalline and amorphous forms, have been of great interest among many researchers due to their considerable progress in gas storage, catalysis, sensing, and many other fields. focus on. Covalent Organic Gels (COGs), as a class of porous organic polymers, are porous covalent organic materials induced by intermediate aggregates. Compared with the previously well-known POPs, the advantages of covalent organogels include two main aspects: ①short reaction time and high synthesis yield; ②wider pore size distribution from micropores to macropores. However, the rational design of COG is still...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/04B01J13/00
CPCC08G12/04B01J13/0065
Inventor 李阳雪董军徐非凡
Owner JILIN UNIV