Ultrasonic response type polymer fluorescent hydrogel material as well as preparation method and application thereof

A hydrogel and polymer technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of unstable shape and difficult to meet application requirements, and achieve the effect of good stability, low equipment requirements and high contrast

Active Publication Date: 2022-05-31
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these materials will undergo sol transformation when responding to ultrasound, and the morphology is unstable, which is difficult to meet the needs of further applications.

Method used

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  • Ultrasonic response type polymer fluorescent hydrogel material as well as preparation method and application thereof
  • Ultrasonic response type polymer fluorescent hydrogel material as well as preparation method and application thereof
  • Ultrasonic response type polymer fluorescent hydrogel material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this example, the synthesis route of the ultrasonic responsive polymer fluorescent hydrogel material is as follows: figure 2 shown.

[0050] Mix 1.5g of acrylamide (AAm), 10mg of the above-mentioned terpyridine functionalized monomer, 1mg of the above-mentioned fluorescent response molecule, 15mg of N,N'-methylenebisacrylamide (MBAA), 1.2mg of azobisisobutyronitrile (AIBN ) was added to 6.2mL dimethyl sulfoxide, and a transparent and uniform gel prepolymer solution A was obtained after shaking and dissolving;

[0051] At room temperature, inject the gel pre-polymerization solution A into a mold with a thickness of 1mm, and then transfer it to a 60°C oven to polymerize into a gel for 6 hours to obtain an oil gel B;

[0052] Transfer oil gel B to 15mL deionized water and soak for 20min, solvent replacement three times to obtain fluorescent hydrogel C;

[0053] Finally, the fluorescent hydrogel C was soaked in 0.1M europium nitrate solution for coordination for 15 mi...

Embodiment 2

[0060] In this example, the amount of fluorescent responsive molecules added was 0.6 mg, and other parameters and methods were the same as those in Example 1 to prepare an ultrasound-responsive polymer fluorescent hydrogel material.

[0061] Such as Figure 5 As shown, the ultrasound-responsive polymer fluorescent hydrogel material prepared in this example, when ultrasonically applied, the fluorescence intensity ratio at 500nm and 615nm gradually decreased until the equilibrium state was reached after 35 minutes of ultrasonication. At the same time, the hydrogel material always maintains a stable shape during the ultrasonic process, with good stability, and the fluorescence emission changes from light yellow to light red fluorescence, showing obvious changes visible to the naked eye.

Embodiment 3

[0063] In this example, the amount of fluorescence responsive molecules added was 0.2 mg, and other parameters and methods were the same as in Example 1 to prepare an ultrasonic responsive polymer fluorescent hydrogel material.

[0064] Such as Figure 5 As shown, the ultrasound-responsive polymer fluorescent hydrogel material prepared in this example, when ultrasonically applied, the fluorescence intensity ratio at 500nm and 615nm gradually decreased until the equilibrium state was reached after 20 minutes of ultrasonication. At the same time, the hydrogel material always maintains a stable shape during the ultrasonic process, with good stability, and the fluorescence emission changes from light orange to bright red fluorescence, showing obvious changes visible to the naked eye.

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Abstract

The invention discloses a preparation method of an ultrasonic response type high-molecular fluorescent hydrogel material with visualization and morphological stability, which comprises the following steps: (1) adding a gelling monomer, a fluorescent response molecule, a cross-linking agent and a free radical thermal initiator into an organic solvent, and completely dissolving to obtain a gel pre-polymerization solution A, polymerizing the gel pre-polymerization solution A into gel to obtain fluorescent oil gel B; (2) soaking the fluorescent oil gel B in water, and performing solvent replacement to obtain fluorescent hydrogel C; and (3) soaking the fluorescent hydrogel C in a salt solution containing lanthanide metal ions for coordination, taking out and drying to obtain the ultrasonic response type polymer fluorescent hydrogel material. The ultrasonic response type polymer fluorescent hydrogel material prepared by the method has the advantages of visualization, high contrast ratio and good stability, and has wide application prospects in the fields of diagnosis and treatment imaging, nondestructive inspection and the like.

Description

technical field [0001] The invention relates to the field of ultrasound-responsive gels, in particular to an ultrasound-responsive polymer fluorescent hydrogel material with both visualization and morphological stability, a preparation method and an application. Background technique [0002] Ultrasonic sensing materials have important applications in ultrasonic diagnosis and treatment, imaging and industrial nondestructive testing, based on piezoelectric materials (ceramic, inorganic titanate), magnetic materials (iron diamond vanadium alloy and ferrite containing zinc and nickel) Such ultrasonic sensing materials have been developed and widely used. For example, the Chinese patent document with the publication number CN110257142A discloses an ultrasonic responsive boron nitride nanogel lubricating material, which is based on urea group modified nitrogen The boronized two-dimensional nanosheet is a gel factor, which is obtained by mixing with base oil in a dispersion liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/36C08F222/38C08F220/58C08J3/075C08K5/3432C08K3/28C08L33/24C08L33/26C09K11/06
CPCC08J3/075C08F220/56C08F220/58C08K5/3432C09K11/06C09K2211/1029C08J2333/24C08J2333/26C08K3/28C08F220/36C08F222/385
Inventor 陈涛尹光强谷金翠
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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