Intelligent optical hydrogel and preparation method thereof

A hydrogel and optical technology, applied in the field of intelligent optical hydrogel and its preparation, can solve the problem of scarcity

Active Publication Date: 2020-10-02
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the hydrophobicity of metal complexes, there are very few related reports

Method used

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  • Intelligent optical hydrogel and preparation method thereof
  • Intelligent optical hydrogel and preparation method thereof
  • Intelligent optical hydrogel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] An intelligent optical hydrogel comprising acrylamide, acrylic acid, (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide)phenyl)methanol methacrylamide, gelatin and aluminum ions, the mass of (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide) phenyl)methacrylamide is acrylamide 2% of the mass, the mass of the acrylic acid is 15% of the mass of the acrylamide, and the mass of the gelatin is 35% of the total solid content.

[0034] The preparation method of the present embodiment hydrogel is:

[0035] (1) Add 6g of methyl 4-aminobenzoate to 30mL of 80% hydrazine hydrate aqueous solution, and react the resulting mixture at 80°C for 24h under a nitrogen atmosphere; then add 10mL of ethanol and continue the reaction for 1h. After the reaction is completed, cool the reaction at room temperature system, the crude product was obtained by filtration, recrystallized in ethanol, and vacuum-dried overnight to obtain the white solid product 4-aminobenzoic hydrazide;

[0036] (2) S...

Embodiment 2

[0040] An intelligent optical hydrogel comprising acrylamide, acrylic acid, (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide)phenyl)methanol methacrylamide, gelatin and aluminum ions, the mass of (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide) phenyl)methacrylamide is acrylamide 2% of the mass, the mass of the acrylic acid is 15% of the mass of the acrylamide, and the mass of the gelatin is 44.6% of the total solid content.

[0041] The preparation method of the hydrogel in this example is as follows: after mixing 3.5 mg of the HHPMA monomer obtained in Example 1 with 178 mg of acrylamide (2.5 mmol), add 975 μL of 10% Tween 80 aqueous solution and continue stirring for 50 minutes to obtain a uniform emulsion ; Then add 25 μL of acrylic acid and 4.5mg (0.02mmol) photoinitiator Irgacure 2959, and fill with nitrogen; Afterwards, the mixed emulsion is injected into a reaction vessel consisting of a pair of glass slides sandwiching a 1mm thick silica gel gasket, and then 150m...

Embodiment 3

[0043] An intelligent optical hydrogel comprising acrylamide, acrylic acid, (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide)phenyl)methanol methacrylamide, gelatin and aluminum ions, the mass of (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazide) phenyl)methacrylamide is acrylamide 2% of the mass, the mass of the acrylic acid is 15% of the mass of the acrylamide, and the mass of the gelatin is 51.8% of the total solid content.

[0044] The preparation method of the hydrogel in this example is as follows: after mixing 3.5 mg of the HHPMA monomer obtained in Example 1 with 178 mg of acrylamide (2.5 mmol), add 975 μL of 10% Tween 80 aqueous solution and continue stirring for 50 minutes to obtain a uniform emulsion; Then add 25 μL of acrylic acid and 4.5 mg (0.02 mmol) of photoinitiator Irgacure 2959, and fill with nitrogen; then the mixed emulsion is injected into a reaction vessel consisting of a pair of glass slides sandwiching a 1 mm thick silica gel gasket, and then 200 mg...

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Abstract

The invention relates to intelligent optical hydrogel and a preparation method thereof. The hydrogel comprises acrylamide, acrylic acid, (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazino)phenyl)methacrylamide, gelatin and aluminum ions, wherein the mass of the (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazino)phenyl)methacrylamide is 1%-3% of the mass of the acrylamide, the mass of the acrylic acid is 10%-20% of the mass of the acrylamide, and the mass of the gelatin is 32%-48% of the total solid content. According to the hydrogel disclosed by the invention, the acrylic acid subjected to metal complexing copolymerization and the (E)-N-(4-(2-(2-hydroxybenzylidene)-formylhydrazino)phenyl)methacrylamide (HHPMA) are utilized to form a polymer network, and gelatin is used as an auxiliary material for gelatinization, so that a semi-interpenetrating structure is obtained; the hydrogel has the advantages of intelligent fluorescence responsiveness, excellent shape memory ability and good self-repairability.

Description

technical field [0001] The invention relates to an intelligent optical hydrogel and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Polymer hydrogel is a polymer material with network structure. The polymer chains are cross-linked to form a three-dimensional solid, and water serves as the dispersion medium. As the concept of "smart materials" has become more and more popular in recent years, smart optical hydrogels that can produce color or fluorescence changes in the face of external stimuli have also been developed. Probes, light-emitting elements and light-control devices have great application value. [0003] The use of metal complex units to construct smart optical hydrogels can, on the one hand, enable the hydrogel to have self-healing properties and prolong its service life through the dynamic equilibrium properties of metal complexes; The complexation efficiency controls the optical change of the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/26C08L89/00C08J3/075C08J3/24C08K3/16C08F220/56C08F220/06C08F220/60C08F2/48C09K11/06
CPCC08J3/075C08J3/24C08F220/56C08F2/48C09K11/06C08K2003/164C08J2333/26C08J2489/00C09K2211/1425C08F220/06C08F220/603
Inventor 汤柳燕
Owner WUYI UNIV
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