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Polyvinyl alcohol fluorescence fiber film, and making method and application thereof

A technology of polyvinyl alcohol fibers and polyvinyl alcohol, which is applied in the field of fluorescent sensing materials, can solve the problems that conjugated polymer sensing materials cannot be reused, and achieve good reusability, improved stability, and synthetic methods easy effect

Inactive Publication Date: 2014-08-13
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the deficiency that the existing conjugated polymer sensing materials cannot be reused, and provide a fluorescent fiber with simple preparation method, good sensitivity, and reusability that is responsive to non-polar aromatic hydrocarbons Membrane and its preparation method

Method used

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  • Polyvinyl alcohol fluorescence fiber film, and making method and application thereof
  • Polyvinyl alcohol fluorescence fiber film, and making method and application thereof
  • Polyvinyl alcohol fluorescence fiber film, and making method and application thereof

Examples

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Embodiment 1

[0027] This embodiment provides a fluorescent fiber membrane that responds to non-polar aromatic hydrocarbons, and its preparation steps and responsiveness testing process are as follows:

[0028] 1. Preparation of precursor aqueous solution

[0029] See attached figure 1 , which is the synthesis route of the precursor in this example, adding 2 parts of tetrahydrothiophene groups to 1 part of p-dichlorobenzyl, and eliminating part of the tetrahydrothiophene groups in the resulting product under the action of sodium hydroxide to obtain the precursor body.

[0030] Refer to literature (J. Am. Chem. Soc1993, 115, 10117-10124; European Polymer Journal 43 (2007) 802-807) to synthesize 1.0038g (about 2.86mmol) of monomer without side group under anaerobic conditions, dissolve it Slowly inject 2mL of sodium hydroxide aqueous solution (about 1.4mol / L) into 16mL of deionized water in an ice-water bath, keep stirring in an ice-water bath for 1 hour after injection, and then put the mi...

Embodiment 2

[0048] This embodiment provides a fluorescent fiber membrane that responds to non-polar aromatic hydrocarbons, and its preparation steps and responsiveness testing process are as follows:

[0049] 1. Preparation of precursor aqueous solution

[0050] See attached figure 1 , which is the synthetic route of the precursor in this example, first add two molecules of tetrahydrothiophene groups to one molecule of p-dichlorobenzyl, and then remove part of the tetrahydrothiophene groups in the resulting product under the action of sodium hydroxide , to obtain the precursor.

[0051] Under anaerobic conditions, 1.0038g (approximately 2.86mmol) of the monomer without side groups synthesized by referring to the literature (J. Am. Chem. Soc1993, 115, 10117-10124; European Polymer Journal 43 (2007) 802-807) was dissolved in Slowly inject 2mL of sodium hydroxide aqueous solution (about 1.4mol / L) into 16mL of deionized water in an ice-water bath. After the injection is completed, keep stir...

Embodiment 3

[0061] This embodiment provides a fluorescent fiber membrane that responds to non-polar aromatic hydrocarbons, and its preparation steps and responsiveness testing process are as follows:

[0062] 1. Preparation of precursor aqueous solution

[0063] See attached figure 1 , which is the synthetic route of the precursor in this example, first add two molecules of tetrahydrothiophene groups to one molecule of p-dichlorobenzyl, and then remove part of the tetrahydrothiophene groups in the resulting product under the action of sodium hydroxide , to obtain the precursor.

[0064] Under anaerobic conditions, 1.0038g (approximately 2.86mmol) of the monomer without side groups synthesized by referring to the literature (J. Am. Chem. Soc1993, 115, 10117-10124; European Polymer Journal 43 (2007) 802-807) was dissolved in Slowly inject 2mL of sodium hydroxide aqueous solution (about 1.4mol / L) into 16mL of deionized water in an ice-water bath. After the injection is completed, keep stir...

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Abstract

The invention relates to a polyvinyl alcohol fluorescence fiber film, and a making method and an application thereof, and belongs to the technical field of fluorescent materials. The preparation method comprises the following steps: preparing an aqueous solution of a poly(p-phenylene vinylene) polymer precursor through a sulfonium salt precursor process, mixing the above precursor with polyvinyl alcohol in proportion to prepare a spinning liquid, and carrying out an electrostatic spinning process to obtain polyethelene alcohol fibers containing the precursor; and heating under vacuum conditions to obtain a poly(p-phenylene vinylene)-containing polyethelene alcohol fiber film, immersing the fiber film in an acetone solution of glutaraldehyde / HCl to obtain the polyvinyl alcohol fluorescence fiber film with the maximum emission wavelength of 476-487nm. If the polyvinyl alcohol fluorescence fiber film is immersed in non-polar aromatic hydrocarbons, the obvious quenching of the fluorescence of the fiber film will appear; and if the aromatic hydrocarbons are removed, the fluorescence is recovered, and the fiber film has extremely low response to general non-aromatic solvents. The fiber film made in the invention has a smooth surface and a stable fluorescence performance, and has the characteristics of excellent sensing responsiveness and repeatable utilization when the fiber film is used as a fluorescence sensing material.

Description

technical field [0001] The invention relates to polyvinyl alcohol fluorescent nanofibers responsive to nonpolar aromatic hydrocarbons and a preparation method thereof, belonging to the technical field of fluorescent sensing materials. Background technique [0002] Conjugated polymers are widely used as fluorescent sensing materials due to their high sensitivity brought about by their unique molecular wire effect. Most of the conjugated polymers used as sensing materials are based on non-reusable solution systems, which will have a negative impact on their large-scale applications. In addition, in the process of constructing conjugated polymers, in order to achieve a specific response, specific sensing groups are often introduced into the main chain of the molecule, which will greatly increase the difficulty of synthesis. [0003] Since Burroughes et al. of Cambridge University first reported the electroluminescent properties of poly(p-phenylenevinylene) (PPV) in 1990, PPV p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/123D06M11/11D04H1/4309D04H1/728G01N21/64D06M101/24
Inventor 范丽娟许晓前缪克松
Owner SUZHOU UNIV
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