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Electric-stimulation fluorescence-response aquagel

A fluorescence-responsive, hydrogel technology, applied in the field of smart hydrogels, can solve the problem of not finding electro-stimulated fluorescence-responsive hydrogels, and achieve the effect of a simple preparation process

Inactive Publication Date: 2016-05-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the electro-stimulated fluorescence-responsive hydrogel based on hyperbranched polyamidoamine

Method used

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  • Electric-stimulation fluorescence-response aquagel
  • Electric-stimulation fluorescence-response aquagel
  • Electric-stimulation fluorescence-response aquagel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Weigh 0.5g of hyperbranched polyamidoamine, add it into a 10mL sample bottle, then add 1mL of deionized water, shake to dissolve, and obtain an aqueous solution of hyperbranched polyamidoamine.

[0022] Wherein hyperbranched polyamidoamine preparation process is as follows:

[0023] Add 13g of cystamine diacrylamide monomer and 6.46g of 1-(2-aminoethyl)piperazine monomer into 120mL of a mixed solvent of methanol and water (the volume ratio of methanol to water is 7:3) to carry out Michael addition polymerization Reaction, the polymerization reaction is reflux reaction at a constant temperature of 50°C for five days to obtain a hyperbranched polyamidoamine polymer solution, and the hyperbranched polyamidoamine polymer solution is precipitated twice in cold acetone, and then placed in a -0.1MPa vacuum Dry at room temperature for 12 hours to obtain hyperbranched polyamidoamine.

[0024] 2. Weigh 0.17g of silver nitrate, add it into the sample bottle of the hyperbranche...

Embodiment 2

[0028] Refer to Example 1 for the preparation process of this example, except that 0.17g of silver nitrate is replaced by 0.33g of lead nitrate, and other conditions remain unchanged. The prepared gel was sliced, and then the corresponding test was carried out, and the test conditions were exactly the same as in Example 1.

Embodiment 3

[0030] Refer to Example 1 for the preparation process of this example, except that 0.17g of silver nitrate is replaced by 0.13g of aluminum chloride, and other conditions remain unchanged. The prepared gel was sliced, and then the corresponding test was carried out, and the test conditions were exactly the same as in Example 1.

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Abstract

The invention discloses an electric-stimulation fluorescence-response aquagel which is prepared by the following steps: dispersing a metal ion salt in a hyperbranched polyamidoamine water solution, and heating to obtain the electric-stimulation fluorescence-response aquagel. The mass ratio of the metal ion salt to the hyperbranched polyamidoamine is 1:1-1:5. The metal ion salt is selected from one or more of silver nitrate, calcium chloride, magnesium chloride hexahydrate, aluminum trichloride, tin nitrate and lead nitrate. The gel is very sensitive to electric field stimulation; and as the electric field action time increases, the fluorescence intensity can gradually decrease. Besides, the fluorescence electroresponse of the gel is reversible: after the electric field is removed, the fluorescence intensity of the gel gradually recovers. The electroresponse fluorescence aquagel disclosed by the invention can be used in the fields of intelligent flexible fluorescence sensors, high-performance display devices and the like.

Description

1. Technical field [0001] The invention relates to an electric stimulation fluorescence response hydrogel, which belongs to the technical field of intelligent hydrogel. 2. Background technology [0002] In 1978, Professor Tanaka of the Massachusetts Institute of Technology discovered that the transparent polyacrylamide gel gradually became blurred as the temperature decreased during the cooling process; after the temperature increased, the gel gradually returned to a transparent state. This gel changes with temperature, making people aware of the existence of smart hydrogels, thus proposing the concept of smart hydrogels. In the ensuing decades, scientific scholars have carried out a lot of research around smart gels. [0003] Smart hydrogel means that when the external environment changes (such as temperature, pH value, electric field, solvent properties, light intensity and wavelength, pressure and ionic strength, etc.), the properties of the gel will also change accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08G83/00C08L87/00
CPCC08J3/075C08G83/005C08J2387/00
Inventor 杨文刘方冰宋健郝文涛
Owner HEFEI UNIV OF TECH
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