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A method for the synthesis of covalent organic framework materials based on benzothiazole units

A technology of covalent organic framework and benzothiazole is applied in the field of synthesis of covalent organic framework materials, which can solve the problems of harsh synthesis conditions and difficult functionalization of carbon nitride materials.

Active Publication Date: 2017-09-15
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic nitrogen-rich (carbon nitride) semiconductor materials developed in recent years have achieved important progress in this field, but the synthesis conditions of carbon nitride materials are harsh and difficult to functionalize

Method used

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  • A method for the synthesis of covalent organic framework materials based on benzothiazole units
  • A method for the synthesis of covalent organic framework materials based on benzothiazole units
  • A method for the synthesis of covalent organic framework materials based on benzothiazole units

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 10.5 mg of 2,4,6-trihydroxy-triphenylcarbaldehyde (1) and 16.7 mg of 2,6-diaminobenzobithiazole (2) into a pressure-resistant glass tube, and then add 0.7 mL of dioxane and 0.3 mL tetrahydrofuran, shake well, add 0.2 mL 3mol / L acetic acid aqueous solution, freeze the glass tube through a liquid nitrogen bath, vacuumize, seal the tube with flame, heat up to 120°C for 3 days after sealing the tube. After the reaction, the glass tube was opened, quenched with acetone, centrifuged, and the solid product was washed three times with acetone and tetrahydrofuran, and then dried at 100°C to obtain 21 mg of brown-red solid powder (named COF-LZU80). 86%, the response is as follows:

[0029] .

Embodiment 2

[0031] Add 10.5 mg of 2,4,6-trihydroxy-trithenaldehyde and 16.7 mg of 2,6-diaminobenzobithiazole into the autoclave, and then add 1.0 mL of 1-butyl-3-methylimidazole tetra Fluoroborate, shake well, add 0.2 mL of 3mol / L acetic acid aqueous solution, close the kettle, heat up to 120°C and react for 3 days. After the reaction, the autoclave was opened, quenched with acetone, centrifuged, and the solid product was washed three times with acetone and tetrahydrofuran, and dried at 100°C to obtain a brown-red solid powder (named COF-LZU80).

Embodiment 3

[0033] Add 10.5 mg of 2,4,6-trihydroxy-trithenaldehyde and 16.7 mg of 2,6-diaminobenzodithiazole into a pressure-resistant glass tube, then add 0.7 mL of dioxane and 0.3 mL of tetrahydrofuran, and shake After mixing, add 0.2 mL of water. After the glass tube was frozen in a liquid nitrogen bath, the tube was evacuated, and then the tube was sealed with a flame. After the tube was sealed, the temperature was raised to 120° C. for 3 days. After the reaction, the glass tube was opened, quenched with acetone, centrifuged, and the solid product was washed three times with acetone and tetrahydrofuran, and then dried at 100°C to obtain a brown-red solid powder (named COF-LZU80).

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Abstract

The present invention discloses a synthesis method for a benzothiazole unit-based covalent organic framework material. The method comprises the following step of: in an organic solvent or an ionic liquid, performing a reaction on 2, 4, 6-trihydroxy benzenetricarboxaldehyde and 2, 6-diamino benzodithiazole to obtain the covalent organic framework material. The covalent organic framework material prepared by the method has a relatively large surface area and a regular channel structure, and is a good photocatalytic material; and the material can be used for cross-dehydrogenation coupling reaction for photocatalysis of N-aryl tetrahydroisoquinoline, and has good stability and an excellent catalytic effect.

Description

technical field [0001] The invention belongs to the field of organic functional materials, in particular to a method for synthesizing a covalent organic framework material based on benzothiazole units. Background technique [0002] The energy and environmental crisis is an important problem that mankind needs to face, which means that human society should take the road of sustainable development. How to develop and utilize recyclable energy, reduce energy consumption, and realize the "green" transformation of substances is also an important challenge for the chemical industry. Undoubtedly, photocatalysis is one of the important technologies. Since the late 1970s, people have gradually developed a variety of inorganic semiconductor materials based on elements such as Ti, Ga, Si, Zn, W, etc., and greatly promoted the development of photocatalytic technology. However, due to structural limitations, this type of material has a narrow range of visible light absorption and a wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D513/04B01J31/02C07D217/16C07D217/14
CPCB01J31/0242B01J2231/4205C07D217/14C07D217/16C07D513/04
Inventor 王为安万凯丁三元
Owner LANZHOU UNIVERSITY
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