Temperature-controlled ionic liquid functionalized temperature response covalent organic framework material and preparation method thereof

A technology of covalent organic framework and ionic liquid, which is applied in the field of heat-sensitive materials and covalent organic framework materials, can solve the problems of polymer incompatibility, etc., and achieve the effects of simple preparation process, uniform pore size distribution and low environmental pollution

Active Publication Date: 2021-03-19
XINXIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The more commonly used method is generally based on polypropylene, and one or two layers of temperature-sensitive materials are coated on the surface of the polypropylene material. The preparation of temperature-sensitive materials by this method not only requires the addition of many other additives, but also exists Problems with polymer incompatibility

Method used

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  • Temperature-controlled ionic liquid functionalized temperature response covalent organic framework material and preparation method thereof
  • Temperature-controlled ionic liquid functionalized temperature response covalent organic framework material and preparation method thereof
  • Temperature-controlled ionic liquid functionalized temperature response covalent organic framework material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Covalent organic framework material COF-1 is synthesized by solvothermal method, including the following steps:

[0036]Add 45mg of 2-hydroxyterephthalaldehyde and 159mg of 4,4',4"-(1,3,5-triazine-2,4,6-triyl)triphenylamine into a 10mL pressure-resistant glass tube, and then A mixture of 1,4-dioxane / mesitylene / 6M acetic acid (1.5mL / 1.5mL / 0.5mL) was added, and the mixed system was sonicated for 20 minutes. After three freeze-vacuum-thaw cycles, The pressure-resistant glass tube was sealed, and then reacted at 120°C for 72 hours to obtain a solid, which was washed with dimethylacetamide, water and ethanol respectively, and the obtained solid was vacuum-dried at 80°C for 24 hours to obtain a yellow covalent organic framework material COF -1.

Embodiment 2

[0038] The synthesis of covalent organic framework material COF-2 comprises the following steps:

[0039] Disperse 44 mg of covalent organic framework material COF-1 in 10 mL of DMF, and then add 21 mg of catalyst anhydrous K 2 CO 3 , sonicated for 20min, then added 184mg of dibromopolyethylene glycol 800, stirred at room temperature for 2 hours, refluxed at 80°C for 3 hours, the solid was washed with ethanol, and dried under vacuum at 80°C overnight to obtain a yellow covalent organic Frame material COF-2.

Embodiment 3

[0041] The synthesis of covalent organic framework material COF-3 comprises the following steps:

[0042] Disperse 26mg of covalent organic framework material COF-2 into 10mL of acetonitrile, then add 4mg of methylimidazole, reflux reaction at 80°C for 48 hours, after cooling the mixture to room temperature, suction filter, wash with ethanol, and vacuum dry at 80°C for 12 hours to obtain the yellow covalent organic framework material COF-3.

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Abstract

The invention discloses a temperature-controlled ionic liquid functionalized temperature response covalent organic framework material and a preparation method thereof, and belongs to the technical field of heat-sensitive materials and covalent organic framework materials. According to the technical scheme, the temperature-controlled ionic liquid functionalized temperature response covalent organicframework material is characterized in that the chemical structure is as follows: n is equal to 8, 12, 16 or 22. The invention further discloses a preparation method of the temperature-controlled ionic liquid functionalized temperature response covalent organic framework material. The method has the advantages of simple synthesis process, good crystal form, large specific surface area, good stability, easy operation and the like, and the synthesized temperature-controlled ionic liquid functionalized temperature response covalent organic framework material COF-XXU has good temperature controlcharacteristics, is a heat-sensitive material with practical application potential, and can be applied to the fields of energy storage, temperature control molecular switches, intelligent electrode materials and the like.

Description

technical field [0001] The invention belongs to the technical field of heat-sensitive materials and covalent organic framework materials, is mainly applied in the field of intelligent temperature-controlled molecular switches, and specifically relates to a temperature-responsive covalent organic framework material functionalized with temperature-controlled ionic liquids and a preparation method thereof. Background technique [0002] Covalent Organic Frameworks (COFs) is an emerging porous and ordered crystalline material, which has the characteristics of high crystallinity, designable structure, large specific surface area, low density, high thermal and chemical stability, and It has developed rapidly in recent years and is a research hotspot in the field of polymer science. It has broad application prospects in the fields of electrical conduction, molecular capture and release, gas separation, catalysis, and energy storage and conversion. [0003] In recent years, environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/42C08G12/30
CPCC08G12/425C08G12/30
Inventor 姚文惠陈永魁
Owner XINXIANG UNIV
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