Synthesis method for benzothiazole unit-based covalent organic framework material

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 difficult functionalization and harsh synthesis conditions of carbon nitride materials.

Active Publication Date: 2016-03-30
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Synthesis method for benzothiazole unit-based covalent organic framework material
  • Synthesis method for benzothiazole unit-based covalent organic framework material
  • Synthesis method for benzothiazole unit-based covalent organic framework material

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Experimental program
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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, then add 0.7 mL of dioxane and 0.3 Add 0.2 mL of 3 mol / L acetic acid aqueous solution to 0.2 mL of tetrahydrofuran, shake well, freeze the glass tube through a liquid nitrogen bath, vacuumize it, seal the tube with a flame, and raise the temperature to 120°C for 3 days after sealing the tube. After the reaction was completed, 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), with a yield of 86 %, the reaction is as follows:

[0029] .

Embodiment 2

[0031] Add 10.5mg of 2,4,6-trihydroxy-trithenylaldehyde and 16.7mg of 2,6-diaminobenzobithiazole into the autoclave, then add 1.0mL of 1-butyl-3-methylimidazolium tetrafluoroboric acid salt, shake well, add 0.2 mL of 3 mol / L acetic acid aqueous solution, close the kettle, and raise the temperature to 120°C 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 10.5mg of 2,4,6-trihydroxy-triphenylcarbaldehyde and 16.7mg of 2,6-diaminobenzodithiazole into a pressure-resistant glass tube, then add 0.7mL of dioxane and 0.3mL of tetrahydrofuran, shake well 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 Applications(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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