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Porous complex composite film oxygen sensor as well as preparation method thereof

An oxygen sensor and composite film technology, applied in the field of porous materials, can solve the problems of poor air and water vapor stability, and achieve the effects of high repeatability, strong anti-interference and fast response speed

Inactive Publication Date: 2014-05-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like other monovalent copper complexes, MAF-2 is less stable to air and water vapor

Method used

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  • Porous complex composite film oxygen sensor as well as preparation method thereof
  • Porous complex composite film oxygen sensor as well as preparation method thereof
  • Porous complex composite film oxygen sensor as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Preparation of MAF-2 and Silicone Rubber Composite Film Oxygen Sensor

[0038] (1) Inject the silicone rubber precursor into the film laminating device made of plexiglass, adjust its thickness to ≈0.2 mm, and place it at room temperature for two days to polymerize and solidify the polymer precursor into a polymer film, and finally cut the film to a suitable size stand-by.

[0039] (2) Then soak the obtained polymer film in dichloromethane solution of 3,5-diethyl-1,2,4-triazole (100 mL, 0.1 mol L -1 ), let stand for 10 minutes until the film completely swells and absorbs the ligand solution, then take out the film and put it into [Cu(NH 3 ) 2 ]OH in ammonia-methanol solution (100 mL, 0.05 mol L -1 , ammonia water / methanol = 1:1), let it stand for another 5 minutes, after the film shrinks and a white crystal film is formed on the surface, carefully take out the film, wash it with methanol, and dry it.

[0040] (3) Finally, use a spray gun to spray the dich...

Embodiment 2

[0042] Example 2 Preparation of MAF-2 and polyethylene composite film oxygen sensor

[0043] (1) Cut a commercial polyethylene film with a thickness of ≈0.2 mm to a suitable size.

[0044] (2) Then soak the obtained polymer film in acetone solution of 3,5-diethyl-1,2,4-triazole (100 mL, 0.05 mol L -1 ), let stand for 9 minutes until the film completely swells and absorbs the ligand solution, then take out the film and put it into [Cu(NH 3 ) 2 ] 2 CO 3 Ammonia-methanol solution (100 mL, 0.02 mol L -1 , ammonia water / methanol=2:1), let it stand for another 4 minutes, after the film shrinks and a white crystal film is formed on the surface, carefully take out the film, wash it with methanol, and dry it.

[0045] (3) Finally, use a spray gun to spray the benzene solution (90°C, 2mL, 5% wt.) of the polyethylene precursor on the surface of the crystal film, and let it stand for a period of time to form a layer of protection on the surface of the crystal film after the polymer...

Embodiment 3

[0046] Example 3 Preparation of MAF-2 and Polyamide Composite Film Oxygen Sensor

[0047] (1) Cut a commercial polyamide film with a thickness of ≈0.2 mm to a suitable size.

[0048] (2) Then soak the obtained polymer film in acetone solution of 3,5-diethyl-1,2,4-triazole (100 mL, 0.2 mol L -1 ), let it stand for 12 minutes until the film is completely swollen and absorbs the ligand solution, then take out the film and put it into [Cu(NH 3 ) 2 ]NO 3 Ammonia-methanol solution (100 mL, 0.2 mol L -1 , ammonia water / methanol=1:2), let stand for another 6 minutes, after the film shrinks and a white crystal film is formed on the surface, carefully take out the film, wash it with methanol, and dry it.

[0049] (3) Finally, use a spray gun to spray the dichloromethane solution (2mL, 20% wt.) of the silicone rubber precursor on the surface of the formed crystal film, and let it stand for a period of time to form a protective layer on the surface of the crystal film after the poly...

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Abstract

The invention discloses a porous complex composite film oxygen sensor as well as a preparation method thereof. According to the invention, porous complex crystals grow on a macromolecule base material film by adopting an in-situ diffusion method so as to prepare a composite film optical oxygen sensor; the crystals grow uniformly and orderly; the reaction condition is mild; the cost is low; the prepared composite film oxygen sensor is good in thermal stability, chemical stability, toughness and mechanical performance, high in flexibility, rapid in response speed, high in repeatability and interference resistance, and is suitable for industrial rapid large-area production.

Description

technical field [0001] The invention belongs to the field of porous materials and chemical sensors, and in particular relates to a porous complex composite film oxygen sensor and a preparation method thereof. Background technique [0002] Porous complexes are crystalline materials composed of metal ions and organic ligands. They have the advantages of large specific surface area, low density, adjustable pore size, adjustable / introduced fluorescent groups, etc., and can be widely used in gas or solvent molecules. The field of sensing and detection (WO 2013137985; US 20120282142; CN 102778483). However, the vast majority of porous complexes are fragile crystals, and it is difficult to prepare regular and mechanically stable films. Therefore, the porous complex is basically applied in the form of powder, which is easy to be blown away, which undoubtedly limits its application in wider fields such as devices, sensing and analysis. [0003] Oxygen sensing has important and ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 张杰鹏柳思扬洪惠玲陈小明
Owner SUN YAT SEN UNIV
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