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Carbon-carbon double bond bridging covalent organic framework material and preparation method thereof

A technology of covalent organic framework and carbon-carbon double bond is applied in the field of carbon-carbon double bond bridged covalent organic framework material and its preparation, which can solve the limited problems and achieve good thermal stability, high crystallinity, high ratio The effect of surface area

Active Publication Date: 2021-04-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the monomers that can be used to synthesize two-dimensional COFs linked by unsubstituted carbon-carbon double bonds are still very limited.

Method used

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  • Carbon-carbon double bond bridging covalent organic framework material and preparation method thereof
  • Carbon-carbon double bond bridging covalent organic framework material and preparation method thereof
  • Carbon-carbon double bond bridging covalent organic framework material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, in an argon atmosphere glove box, 53 mg of N-methyl-2,4,6-trimethylpyridinium iodide salt, 79 mg of 2,4,6-tris(4-formylphenyl) -1,3,5-triazine, 7 mL of anhydrous N,N-dimethylformamide and 3 mL of o-dichlorobenzene and 600 μL of dimethylamine in tetrahydrofuran (2mol / L), add 15 mL of thick-walled in a pressure-resistant bottle. Seal the thick-walled pressure-resistant bottle with a polytetrafluoroethylene screw plug, transfer it to a constant temperature oil bath, and heat it to 180° C. for 72 hours. After the reaction, the reaction flask was naturally cooled to room temperature, and the filter residue was collected by vacuum filtration, rinsed with acetone, dichloromethane, tetrahydrofuran and methanol respectively, and the solid product was collected and vacuum-dried at 60° C. for 12 hours to obtain a light yellow solid. Named COF-Me-I.

Embodiment 2

[0035] Such as figure 1As shown, in an argon atmosphere glove box, 46 mg of N-ethyl-2,4,6-trimethylpyridinium bromide, 79 mg of 2,4,6-tris(4-formylphenyl) -1,3,5-triazine, 7Ml of anhydrous N,N-dimethylformamide and 3Md L of o-dichlorobenzene and 600μL of dimethylamine in tetrahydrofuran (2mol / L), add 15Ml of thick-walled in a pressure-resistant bottle. Seal the thick-walled pressure-resistant bottle with a polytetrafluoroethylene screw plug, transfer it to a constant temperature oil bath, and heat it to 180° C. for 72 hours. After the reaction, the reaction flask was naturally cooled to room temperature, and the filter residue was collected by vacuum filtration, rinsed with acetone, dichloromethane, tetrahydrofuran and methanol respectively, and the solid product was collected and vacuum-dried at 60° C. for 12 hours to obtain a light yellow solid. Named COF-Et-Br.

[0036] Such as figure 2 Shown is the powder X-ray diffraction pattern of the obtained two-dimensional catio...

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Abstract

The invention discloses a carbon-carbon double bond bridged covalent organic framework material and a preparation method thereof, and relates to the field of covalent organic framework materials. According to the invention, N-alkyl-2, 4, 6-trimethylpyridine quaternary ammonium salt used as a core monomer and 2, 4, 6-tris(4-aldehyde phenyl)-1, 3, 5-triazine are used to synthesize the carbon-carbon double bond bridging covalent organic framework material through a heating reaction. The obtained covalent organic framework material has the advantages of high crystallinity, high specific surface area, regular open pore channel structure, rich photoelectric activity, good thermal stability and two-dimensional layered morphology.

Description

technical field [0001] The invention relates to the field of covalent organic framework materials, in particular to a carbon-carbon double bond bridging covalent organic framework material and a preparation method thereof. Background technique [0002] Covalent organic frameworks (COFs) materials are a class of light elements (C, H, O, N, B, etc.) connected by covalent bonds in two-dimensional or three-dimensional space, controlled by thermodynamics A class of porous materials with long-range ordered structure and regular pore structure formed by the reversible polymerization of . In 2005, the Yaghi research group reported the first two-dimensional COF based on boronate linkages (Science, 2005, 310, 1166-1170). This type of material benefits from the rich designability of organic monomers, and the Order and regularity, as well as the diversity of covalent bond forms, thus have the incomparable advantages of other traditional porous materials such as molecular sieves, porous...

Claims

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Application Information

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IPC IPC(8): C08G16/02
CPCC08G16/0268
Inventor 张帆孟凡成毕帅
Owner SHANGHAI JIAO TONG UNIV
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