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A kind of covalent organic framework material and its preparation method and application

A technology of covalent organic framework and reaction time, applied in the field of organic porous materials, can solve the problems of few COFs materials, poor stability of doping state, complicated synthesis route, etc., to achieve high water evaporation rate, high yield, high photothermal The effect of conversion efficiency

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the cumbersome synthesis routes, poor crystallinity, and poor stability of the doped state of the above-mentioned functional units, there are very few COFs materials with high light-to-heat conversion efficiency developed so far.

Method used

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  • A kind of covalent organic framework material and its preparation method and application
  • A kind of covalent organic framework material and its preparation method and application
  • A kind of covalent organic framework material and its preparation method and application

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Embodiment

[0050] A covalent organic framework material, the preparation method of which comprises the following steps:

[0051] 1) Synthesis of TPBBPTACOF: 28.1 mg of 1,3,5-tris(4-aminophenyl)benzene (TPB), 29.1 mg of 2,5-bis(prop-2-yn-1-yloxy) Terephthalaldehyde (BPTA) and 0.1mL of glacial acetic acid were dispersed in a mixed solvent consisting of 0.5mL of o-dichlorobenzene and 0.5mL of n-butanol, polymerized at 120°C for 72h, the reaction solution was cooled to room temperature, and then separated Centrifuge 3 times with tetrahydrofuran and acetone respectively, and then extract the centrifuged solid with tetrahydrofuran to obtain 44.1 mg of TPBBPTACOF (yield: 77%). The reaction formula is as follows:

[0052]

[0053] 2) Synthesis of TCNECOF: Add 100mg of TPBBPTACOF into a 20mL Shrek tube, add 100mg of tetracyanoethylene into a 5mL test tube and place it in the Shrek tube to ensure that the two samples are not in direct contact, and remove the Shrek tube. After gas treatment, pu...

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Abstract

The invention discloses a covalent organic framework material and a preparation method and application thereof. The preparation method of the covalent organic framework material of the present invention comprises the following steps: 1) carrying out 1,3,5-tris(4-aminophenyl)benzene and 2,5-bis(prop-2-alkyne-1-yloxy) base) polymerization of terephthalaldehyde to obtain TPBBPTACOF; 2) solid-phase reaction of TPBBPTACOF and tetracyanoethylene to obtain TCNECOF; 3) hydrolysis of TCNECOF to obtain TCNEAOCOF. The covalent organic framework material of the invention has high photothermal conversion efficiency, simple synthesis and high yield, is suitable as a photothermal conversion material, and has good application prospects in the field of water evaporation.

Description

technical field [0001] The invention relates to the technical field of organic porous materials, in particular to a covalent organic framework material and its preparation method and application. Background technique [0002] Solar energy is an inexhaustible emerging renewable energy, which occupies an important position in the energy used by human beings, and is an important way to reduce environmental pollution and get rid of heavy dependence on fossil fuels. At present, the utilization forms of solar energy mainly include conversion between light energy and electric energy, conversion between light energy and chemical energy, and conversion between light energy and thermal energy. The photothermal conversion process involves the capture of solar energy by materials and the direct conversion of solar energy by materials. The conversion process does not involve any energy loss. It is a direct and efficient energy conversion method with great application potential. In recen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/40C08G12/08
CPCC08G12/40C08G12/08
Inventor 顾成汤小辉王伟涛王胜东
Owner SOUTH CHINA UNIV OF TECH