Fluorescent high-polymer composite and preparation methods thereof

A technology of polymers and complexes, applied in coating and other directions, can solve the problems of reducing photothermal stability and mechanical strength of polymer complexes, reducing fluorescence detection sensitivity, short fluorescence emission wavelength, etc., and achieving excellent fluorescence characteristics, compounding Excellent effect, the effect of enhanced fluorescence intensity

Active Publication Date: 2016-10-05
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of these fluorescent emitting substances are inorganic substances, which are not easily dispersed in the organic polymer matrix, so their composite effect is poor, the process is complicated and the cost is high
In addition, the fluorescence emission wavelength of these inorganic substances is short, and the fluorescence intensity is weakened after compounding, which reduces the sensitivity of fluorescence detection. At the same time, their doping will reduce the photothermal stability and mechanical strength of the polymer compound, which limits its application.

Method used

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  • Fluorescent high-polymer composite and preparation methods thereof
  • Fluorescent high-polymer composite and preparation methods thereof
  • Fluorescent high-polymer composite and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Dissolve 0.01 g of PVA in 9.99 g of deionized water, heat to 85° C., fully dissolve, and cool to room temperature to obtain 10 mL of a PVA aqueous solution with a mass fraction of 0.1 wt%. The indocyanine dye D1 (see molecular structure figure 1 ) Is added to an aqueous solution composed of 0.1wt% PVA and other water-soluble polymer materials with the added amount of polyvinyl alcohol (PVA) 0% mass fraction to form 1×10 -8 mol / L indocyanine dye aqueous solution. The mixed solution was sonicated for 1h at room temperature and protected from light, and the ultrasonic frequency was 20KHz. Dry for 24 hours at room temperature and avoid light to obtain a fluorescent polymer composite.

Embodiment 2

[0047] Dissolve 0.5 g of PVA in 9.5 g of deionized water, heat to 90° C., fully dissolve, and cool to room temperature to obtain 10 mL of a PVA aqueous solution with a mass fraction of 5 wt%. The indocyanine dye D2 (see the molecular structure figure 2 ) Is added to an aqueous solution composed of 5wt% PVA and polyvinyl pyrrolidone (PVP) with a mass fraction of 0.01% polyvinyl alcohol (PVA) to form 1×10 -6 mol / L indocyanine dye aqueous solution. The mixed solution was sonicated at room temperature and protected from light for 1 hour, and the ultrasonic frequency was 50KHz. Dry for 24 hours at room temperature and avoid light to obtain a fluorescent polymer composite.

Embodiment 3

[0049] Dissolve 1.0 g of PVA in 9.0 g of deionized water, heat to 100° C., fully dissolve, and cool to room temperature to obtain 10 mL of a PVA aqueous solution with a mass fraction of 10 wt%. The indocyanine dye D3 (see the molecular structure image 3 ) Is added to an aqueous solution composed of 10wt% PVA and polyethylene glycol (PEG) with the added amount of polyvinyl alcohol (PVA) mass fraction 0.1% to form 1×10 -4 mol / L indocyanine dye aqueous solution. The mixed solution was sonicated at room temperature and protected from light for 2h, and the ultrasonic frequency was 100KHz. Dry for 24 hours at room temperature and avoid light to obtain a fluorescent polymer composite.

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Abstract

The fluorescent high-polymer composite is a product compounded from a 1*10<-8>-1*10<-4> indolyl cyanine dye, 0.1-10 wt% polyvinyl alcohol and other water-soluble high-polymer substances which account for 0-60 wt% of the polyvinyl alcohol. The physical preparation method comprises the following step: carrying out ultrasonic treatment on the water solution formed by the indolyl cyanine dye, polyvinyl alcohol and other water-soluble high-polymer substances. The chemical method comprises the following steps: converting the indolyl cyanine dye into the succinimide active ester of the dye, and reacting with the polyvinyl alcohol and other water-soluble high-polymer substances, or preparing a film from the polyvinyl alcohol and impregnating the film in the dye succinimide active ester solution. The preparation methods have the advantages of simple preparation techniques, environment friendliness and uniform component compounding. The product has excellent fluorescent characteristic, and is hopeful to be widely used in the aspects of biofluorescence sensors, textiles, medicines, daily supplies and the like.

Description

Technical field [0001] The invention relates to a fluorescent polymer compound and a preparation method thereof, in particular to a fluorescent polymer compound formed by a dye and a water-soluble polymer compound. Background technique [0002] Fluorescent polymer materials have the advantages of fluorescence, light weight, flexibility, film formation, adhesion and easy processing and molding. As a functional material, they are used in bio-fluorescence detection, sensors, drug embedding and waste liquid treatment. It is widely used. [0003] At present, fluorescent polymer materials are mainly formed by the combination of rare earth ions such as europium ions and their complexes as fluorescent emitting substances, and polymer substrates such as polyarylether nitrile, polymethyl methacrylate, and acrylamide. Most of these fluorescent emission substances are inorganic substances, which are not easily dispersed in the organic polymer matrix, so their composite effect is poor, the pro...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L39/06C08L71/02C08L5/04C08K5/42C08J7/06C08J5/18
CPCC08J5/18C08J7/065C08J2329/04C08K5/42C08L29/04C08L2201/08C08L2203/16C08L2205/03C08L39/06C08L71/02C08L5/04
Inventor 王丽秋孙琪刘洋张晓博刘学龙
Owner YANSHAN UNIV
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