Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Three-dimensional bipyridine functionalized covalent organic frame material synthesis method

A technology of covalent organic framework and three-dimensional bipyridine is applied in the field of synthesis of covalent organic framework materials, which can solve the problems of less three-dimensional materials, and achieve the effect of obvious shape selectivity and good catalytic activity.

Active Publication Date: 2015-07-08
LANZHOU UNIVERSITY
View PDF1 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, there are very few reports on 3D COFs materials, and even fewer functionalized 3D materials

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
  • Three-dimensional bipyridine functionalized covalent organic frame material synthesis method
  • Three-dimensional bipyridine functionalized covalent organic frame material synthesis method
  • Three-dimensional bipyridine functionalized covalent organic frame material synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Synthesis of three-dimensional pyridine functionalized covalent organic framework (COF-LZU301):

[0033]

[0034] Tetrakis(4-anilino)methane (17.1 mg, 0.045 mmol) and 6,6'-diformyl-3,3'-bipyridine (19.1 mg, 0.09 mmol) were added into a pressure-resistant glass tube. Then add 0.9 mL of 1,4-dioxane and 0.1 mL of 6M aqueous acetic acid into the glass tube. Connect the glass tube to the vacuum line, freeze it with liquid nitrogen, evacuate to 0mbar, and then seal the tube with flame. The sealed glass tube was crystallized at room temperature for 5 hours, then placed in an oven and heated to 120°C for 3 days. After the reaction, the obtained solid was transferred to a centrifuge tube, centrifuged and washed three times with acetone and tetrahydrofuran, and then heated and dried at 90°C for 12 hours to obtain 131.5 mg of COF-LZU30 with a yield of 83%.

[0035] Such as figure 1 , by comparing the PXRD spectra of COF-LZU301 and the raw materials, it can be found that ...

Embodiment 2

[0048] Synthesis of three-dimensional pyridine functionalized covalent organic framework (COF-LZU301):

[0049]

[0050] Tetrakis(4-anilino)methane (34.2 mg, 0.09 mmol) and 6,6'-diformyl-3,3'-bipyridine (9.6 mg, 0.045 mmol) were added into a pressure-resistant glass tube. Then add 0.5 mL of 1,4-dioxane and 0.1 mL of 9M aqueous acetic acid into the glass tube. Connect the glass tube to the vacuum line, freeze it with liquid nitrogen, evacuate to 0mbar, and then seal the tube with flame. The sealed glass tube was crystallized at room temperature for 5 hours, then placed in an oven and heated to 120°C for 3 days. After the reaction, the obtained solid was transferred to a centrifuge tube, centrifuged and washed three times with acetone and tetrahydrofuran, and then heated and dried at 90°C for 12 hours to obtain COF-LZU301.

Embodiment 3

[0052] Synthesis of three-dimensional pyridine functionalized covalent organic framework (COF-LZU301):

[0053]

[0054] Tetrakis(4-anilino)methane (17.1 mg, 0.045 mmol) and 6,6'-diformyl-3,3'-bipyridine (28.6 mg, 0.135 mmol) were added into a pressure-resistant glass tube. Then, 1.2 mL of 1,4-dioxane and 0.1 mL of 9M aqueous acetic acid were added to the glass tube. Connect the glass tube to the vacuum line, freeze it with liquid nitrogen, evacuate to 0mbar, and then seal the tube with flame. The sealed glass tube was crystallized at room temperature for 5 hours, then placed in an oven and heated to 120°C for 3 days. After the reaction, the obtained solid was transferred to a centrifuge tube, centrifuged and washed three times with acetone and tetrahydrofuran, and then heated and dried at 90°C for 12 hours to obtain COF-LZU301.

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 three-dimensional bipyridine functionalized covalent organic frame material (COF-LZU301) synthesis method which comprises following steps: (1) uniformly mixing tetra(4-anilino)methane in a tetrahedral configuration and linear 6-6'-diformyl-3,3'-bipyridine in an organic solvent; and (2) adding an acetic acid water solution as an acidic catalyst, and performing heating crystallization, centrifugal washing and heat drying to obtain the three-dimensional bipyridine functionalized covalent organic frame material (COF-LZU301). The COF-LZU301 has a three-dimensional diamond topological structure, regular and ordered porous and uniformly-distributed pyridine groups, so that the COF-LZU301 has excellent catalytic activity and shape selectivity for catalyzing a Knoevenagel reaction process. The COF-LZU301 achieves shape-selective catalysis of a typical alkali catalytic reaction.

Description

technical field [0001] The invention relates to the synthesis of covalent organic framework materials (COFs), in particular to a synthesis method of three-dimensional bipyridyl functionalized covalent organic framework materials, belonging to the field of organic synthesis. Background technique [0002] Covalent organic frameworks (COFs) are a new class of crystalline organic porous materials connected by covalent bonds. Structurally, this type of material has a large specific surface area, regular and ordered pores, and relatively low density. Therefore, COFs materials have shown great application potential in gas adsorption and storage, heterogeneous catalysis, organic optoelectronics, fluorescent probes, ion conduction, etc. Compared with inorganic molecular sieve materials, COFs materials have organic precursors that are easy to modify and functionalize, so this type of material has more advantages than molecular sieve materials in terms of functionalization, especially...

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): C07D213/53B01J31/06B01J31/02C07C253/30C07C255/34
Inventor 王为李治军丁三元
Owner LANZHOU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com