Nitroxyl radical covalent organic framework material as well as synthetic method and application thereof

A technology of covalent organic framework and nitroxide radicals, applied in the field of nitroxide radical covalent organic framework materials

Active Publication Date: 2018-06-29
LANZHOU UNIVERSITY
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no reported attempt to directly construct covalent organic frameworks via radical monomers via a bottom-up synthetic strategy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nitroxyl radical covalent organic framework material as well as synthetic method and application thereof
  • Nitroxyl radical covalent organic framework material as well as synthetic method and application thereof
  • Nitroxyl radical covalent organic framework material as well as synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 15.3 mg of trimesaldehyde and 4.5 mg of radical precursor 1 and 38.6 mg of non-radical precursor 2 were added to the pressure-resistant tube. Then add 1mL dioxane, 1mL mesitylene and 1mL ethanol, shake well and add 0.3mL 9mol / L acetic acid solution. After sealing the pressure tube with a rubber stopper, replace it with argon three times, then quickly remove the rubber stopper, and seal the pressure tube with a polytetrafluoroethylene stopper. It was placed in an oven and reacted at 80° C. for five days. After the reaction, a solid was produced at the bottom of the pressure-resistant tube, and the solid was transferred to a centrifuge tube, washed with acetone and tetrahydrofuran for 3 times, respectively. The solid was dried at 80°C to obtain 35.2 mg of brown yellow solid powder PR(10)-COF, with a yield of 68%.

Embodiment 2

[0032] Using 0 mg of free radical precursor 1 and 42.9 mg of non-radical precursor 2, the others were the same as in Example 1 to obtain 35.7 mg of PR(0)-COF with a yield of 69%.

Embodiment 3

[0034] Using 0.9 mg of free radical precursor 1 and 42 mg of non-radical precursor 2, the others were the same as in Example 1 to obtain 33.5 mg of PR(2)-COF with a yield of 65%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a nitroxyl radical covalent organic framework material as well as a synthetic method and application thereof. The synthetic method comprises the following steps: uniformly mixing benzenetricarboxaldehyde, a radical precursor 1 and a non-radical precursor 2 in an organic solvent, reacting under the catalysis of acetic acid, and obtaining a nitroxyl radical covalent organic framework material; a molar ratio of the benzenetricarboxaldehyde to the radical precursor 1 to the non-radical precursor 2 is 1: (0 to 1): (0 to 1); the concentration of the nitroxyl radical is equalto 1.8mmol / g *a molar weight of radical precursor 1 / (a molar weight of the radical precursor 1 + a molar weight of the non-radical precursor 2); and the radical precursor 1 is as shown in the chemicalformula (I), and the non-radical precursor 2 is as shown in chemical formula (II). The nitroxyl radical covalent organic framework material provided by the invention has a two-dimensional hexagonal structure with an order long range and a regular pore canal, the radicals are uniformly distributed in a material skeleton, and the concentration of the radicals can be adjusted freely, so that the nitroxyl radical covalent organic framework material can be used as a polarization reagent. (The formula (I) and formula (2) are shown in the description).

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a nitrogen-oxygen radical covalent organic framework material, a synthesis method and application thereof. Background technique [0002] The delocalization of nitrogen and oxygen free gene electrons on nitrogen and oxygen atoms and the steric hindrance of surrounding methyl groups can exist stably. Immobilized nitroxide radical materials have important applications in many fields, such as heterogeneous catalysts, organic radical batteries, molecular magnets, dynamic nuclear polarization, etc. Initially, such free radical materials were mainly obtained by modifying nitroxide radicals to organic / inorganic polymers through post-modification methods, and successfully used them for the catalytic oxidation of alcohols. However, because the materials obtained by such post-modification methods are generally amorphous or poor in crystal form, their applications are limited to a certain e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 王为曹伟
Owner LANZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap