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Covalent organic framework material of bionic photosystem I and preparation and application of covalent organic framework material

A covalent organic framework, photosystem technology, applied in organic compound/hydride/coordination complex catalysts, inorganic chemistry, hydrogen production, etc., can solve problems such as biomimetic PSICOFs that have not yet been seen

Active Publication Date: 2020-07-28
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some research groups have begun to pay attention to the photolysis of water by COFs, but so far, it has not been seen to design and synthesize COFs with biomimetic PSI structures and apply them in related fields.

Method used

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  • Covalent organic framework material of bionic photosystem I and preparation and application of covalent organic framework material
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  • Covalent organic framework material of bionic photosystem I and preparation and application of covalent organic framework material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The synthesis of the covalent organic framework material NKCOF-108 with a biomimetic structure, the specific implementation steps are as follows:

[0040] Weigh the monomer 4,4'-((5-fluorobenzo[c][1,2,5]thiadiazole-4,7-diyl)bis(acetylene-2,1-diyl)) Dibenzaldehyde (0.04mmol) and 1,3,6,8-tetrakis-(p-aminophenyl)-pyrene (0.02mmol) were added into a thick-walled heat-resistant glass tube (o.d.×i.d=10×8mm 2 ), then add 0.95mL of mesitylene, 0.05mL of n-butanol and 0.1mL of 6M acetic acid aqueous solution, then quickly freeze in liquid nitrogen, then vacuumize, and then seal the tube with a flame of an oxygen hydrogen machine. Put the sealed glass tube into an oven at 120°C for 5 days to react to obtain dark red solid product NKCOF-108. Its PXRD as Figure 4 shown.

Embodiment 2

[0042] The synthesis of the covalent organic framework material NKCOF-109 with a biomimetic structure, the specific implementation steps are as follows:

[0043]Weigh the monomer 4,4'-((5,6-difluorobenzo[c][1,2,5]thiadiazole-4,7-diyl)bis(acetylene-2,1-diyl) Base)) benzaldehyde (0.04mmol) and 1,3,6,8-tetra-(p-aminophenyl)-pyrene (0.02mmol) were added into a thick-walled heat-resistant glass tube (o.d.×i.d=10×8mm 2 ), then add 0.1mL mesitylene, 0.9mL n-butanol and 0.1mL 6M acetic acid aqueous solution, then quickly freeze in liquid nitrogen, then vacuumize, and then seal the tube with a flame of an oxygen hydrogen machine. Put the sealed glass tube into an oven at 120°C for 5 days to react to obtain dark red solid product NKCOF-109. Its PXRD as Figure 4 shown.

Embodiment 3

[0045] The synthesis of the covalent organic framework material NKCOF-110 with a biomimetic structure, the specific implementation steps are as follows:

[0046] Weigh the monomer 4,4'-(benzo[c][1,2,5]thiadiazole-4,7-diylbis(ethyn-2,1-diyl))benzaldehyde (0.04 mmol) and 1,3,6,8-tetra-(p-aminophenyl)-pyrene (0.02mmol) into thick-walled heat-resistant glass tube (o.d.×i.d=10×8mm 2 ), then add 0.75mL of mesitylene, 0.25mL of n-butanol and 0.1mL of 6M acetic acid aqueous solution, then quickly freeze in liquid nitrogen, then vacuumize, and then seal the tube with a flame of an oxygen hydrogen machine. Put the sealed glass tube into an oven at 120°C for 5 days to react to obtain dark red solid product NKCOF-110. Its PXRD as Figure 4 shown.

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Abstract

The invention relates to synthesis of a functionalized covalent organic framework and an application technology of the functionalized covalent organic framework in hydrogen production by photolysis ofwater, and the structure and reaction mechanism of the photosynthesis reaction center in nature are creatively simulated and the covalent organic framework material is designed and developed as a newlight-harvesting material. The present invention is a crystalline material formed by covalently linking imine bonds formed by a Schiff base condensation reaction of organic monomers. The covalent organic framework material obtained by the method has a large specific surface area and a regular pore channel structure with an adjustable pore diameter, and is beneficial to mass transfer of reactantsand products in the catalytic process. The covalent organic framework material has high stability and durability for hydrogen production through catalytic water decomposition under visible light, andthe hydrogen production rate can reach up to 11.6 mmol / g / h.

Description

technical field [0001] The invention belongs to the field of organic functional materials, in particular to a covalent organic framework material (COFs), its synthesis method and application. Background technique [0002] Photosynthesis is one of the most efficient ways to convert solar energy in nature. Photosynthesis in nature is carried out through the synergy of a series of enzymes and other protein molecules. In particular, the research on PSI (P700) in photosynthesis is relatively mature. The apparent quantum efficiency can reach 100%. Studying the reaction principle of the photosynthetic system and simulating the photosynthetic system to achieve efficient solar energy conversion is one of the most effective means to design and synthesize new light-harvesting materials and improve the utilization rate of solar energy. [0003] As an emerging functional porous material in recent years, covalent organic framework materials, with their advantages of high specific surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J31/06B01J35/10C01B3/04
CPCC08G83/008B01J31/06C01B3/042B01J35/39B01J35/40B01J35/60Y02P20/54
Inventor 陈瑶张振杰赵正峰张赛男
Owner NANKAI UNIV
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