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A covalent organic framework material for biomimetic photosystem i, its preparation and application

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

Active Publication Date: 2022-05-20
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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  • A covalent organic framework material for biomimetic photosystem i, its preparation and application
  • A covalent organic framework material for biomimetic photosystem i, its preparation and application
  • A covalent organic framework material for biomimetic photosystem i, its preparation and application

Examples

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 the synthesis of functionalized covalent organic framework and its application technology in photolysis of water to produce hydrogen, creatively simulating the structure and reaction mechanism of the photosynthetic reaction center in nature to design and develop covalent organic framework materials as new light-harvesting materials . The invention is a crystalline material formed by the covalent connection of imino bonds formed by organic monomers through the Schiff base condensation reaction. The covalent organic framework material obtained by this method has a large specific surface area and a regular and adjustable pore structure, which is beneficial to the mass transfer of reactants and products in the catalytic process. This type of covalent organic framework material has high stability and durability for catalytic water splitting hydrogen production under visible light, and the hydrogen production rate can reach up to 11.6mmol / 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 Patents(China)
IPC IPC(8): C08G83/00B01J31/06B01J35/10C01B3/04
CPCC08G83/008B01J31/06B01J35/004B01J35/10B01J35/023C01B3/042Y02P20/54
Inventor 陈瑶张振杰赵正峰张赛男
Owner NANKAI UNIV
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