Crosslinked polyethylene pyrrolidone-base fluorescent composite thin film and preparation method thereof

A technology based on polyvinylpyrrolidone and polyvinylpyrrolidone, which is applied in the field of fluorescent polymer film preparation, can solve the problems that PVP cannot be reused and increase the cost of use, and achieve the goals of overcoming the leakage of fluorescent groups, reducing production costs, and good swelling ability Effect

Active Publication Date: 2012-08-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the water solubility of PVP, some PVP cannot be reused, which increases the cost of use.

Method used

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  • Crosslinked polyethylene pyrrolidone-base fluorescent composite thin film and preparation method thereof
  • Crosslinked polyethylene pyrrolidone-base fluorescent composite thin film and preparation method thereof
  • Crosslinked polyethylene pyrrolidone-base fluorescent composite thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Dissolve 0.03g of polyvinylpyrrolidone with a molecular weight of 40k-50k in 100ml of ethanol and acetone mixed solvent with a volume ratio of 0.1 under the condition of ice-water bath and mechanical stirring, the stirring speed is 800r / min, and the stirring time is 30min; Then stir at room temperature for 30 minutes; finally add 0.01 g of perylene anhydride under ultrasonic conditions, and continue ultrasonic dispersion for 30 minutes;

[0029] 2. Transfer the mixed solution prepared in step 1 to a high-pressure reactor, remove oxygen, and react at a temperature of 165°C for 30 hours;

[0030] 3. Cool to room temperature after the reaction, take out the film and wash it with ethanol and water three times, and then vacuum-dry it at 45°C for 24 hours to obtain a cross-linked polyvinylpyrrolidone-based fluorescent composite film.

[0031] The cross-linked polyvinylpyrrolidone-based fluorescent composite film obtained in step (3) has a smooth surface, uniform color, sta...

Embodiment 2

[0033] 1. Dissolve 0.03g of polyvinylpyrrolidone with a molecular weight of 17k in a mixed solvent of ethanol and acetone with a volume ratio of 0.1 in 100ml under the conditions of ice-water bath and mechanical stirring, the stirring speed is 800r / min, and the stirring time is 30min; Stir at room temperature for 30 minutes; finally add 0.01 g of perylene anhydride under ultrasonic conditions, and continue ultrasonic dispersion for 30 minutes;

[0034] 2. Transfer the mixed solution prepared in step 1 to a high-pressure reactor, remove oxygen, and react at a temperature of 165°C for 30 hours;

[0035] 3. Cool to room temperature after the reaction, take out the film and wash it with ethanol and water three times, and then vacuum-dry it at 45°C for 24 hours to obtain a cross-linked polyvinylpyrrolidone-based fluorescent composite film.

[0036] The crosslinked polyvinylpyrrolidone-based fluorescent composite film obtained in the step (3) has smooth surface, uniform color and st...

Embodiment 3

[0038] 1. Dissolve 0.03g of polyvinylpyrrolidone with a molecular weight of 30k in a mixed solvent of ethanol and acetone with a volume ratio of 0.1 in 100ml under the conditions of ice-water bath and mechanical stirring, the stirring speed is 800r / min, and the stirring time is 30min; Stir at room temperature for 30 minutes; finally add 0.01 g of 4Cl-perylene anhydride under ultrasonic conditions, and continue ultrasonic dispersion for 30 minutes;

[0039] 2. Transfer the mixed solution prepared in step 1 to a high-pressure reactor, remove oxygen, and react at a temperature of 165°C for 30 hours;

[0040]3. Cool to room temperature after the reaction, take out the film and wash it with ethanol and water three times, and then vacuum-dry it at 45°C for 24 hours to obtain a cross-linked polyvinylpyrrolidone-based fluorescent composite film.

[0041] The crosslinked polyvinylpyrrolidone-based fluorescent composite film obtained in the step (3) has smooth surface, uniform color and...

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Abstract

The invention discloses a crosslinked polyethylene pyrrolidone-base fluorescent composite thin film and a preparation method thereof and belongs to the technical field of preparation of fluorescent polymeric membranes. By using the special structure of a side chain of polyethylene pyrrolidone, the polyethylene pyrrolidone is subjected to self-crosslinking under certain reaction conditions; and a polycyclic aromatic dye is simultaneously added into the reaction solution, and in a self-crosslinking process of the polyethylene pyrrolidone, the dye is dispersed and fixed in the polyethylene pyrrolidone to obtain the crosslinked polyethylene pyrrolidone-base fluorescent composite thin film. The fluorescent composite thin film prepared by the method has good swelling capacity and has high stability in a plurality of solvents; the thin film also has good water solubility and biocompatibility, so the thin film has wide application prospect in aspects, such as biomedicine, life sciences, and pharmacology; and furthermore, the thin film contains polycyclic aromatic fluorescent groups with excellent optical property, so that the optical property of the thin film is high in stability.

Description

technical field [0001] The invention belongs to the technical field of fluorescent polymer film preparation, in particular to a cross-linked polyvinylpyrrolidone-based fluorescent composite film and a preparation method thereof. Background technique [0002] Polymer membrane has a special three-dimensional network structure, so it is often used as a matrix for immobilizing small fluorescent molecules. The immobilization methods of fluorescent small molecules in polymer membranes can be divided into two categories: physical methods and chemical methods. [0003] The physical immobilization method is to dope the fluorescent small molecule in the polymer solution in a certain proportion, and then dry it by spinning the glue to obtain a polymer-embedded composite film. When immobilized by chemical methods, firstly, the fluorescent small molecules are chemically bonded to the polymer chain that is easy to form a film, and then the polymer is formed into a film on the surface of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L39/06C08K5/01C09K11/06
Inventor 尹梅贞杨万泰康乃文许泽军叶勇
Owner BEIJING UNIV OF CHEM TECH
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