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Preparation method and application of temperature-responded silver nanocluster/polymer hydrogel composite material

A silver nano-cluster and temperature-responsive technology, which is applied in the fields of analytical materials, luminescent materials, and material excitation analysis, can solve the problems of difficult sample preparation and dependence on large-scale analytical testing instruments, and achieve short reaction time, low cost of raw materials, and source wide range of effects

Inactive Publication Date: 2017-08-04
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems that existing methods for detecting hexavalent chromium ions need to rely on large-scale analytical testing instruments or have difficulties in sample preparation and time-consuming detection, and provide a temperature-responsive silver nanocluster / polymer hydrogel Preparation methods and applications of composite materials

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  • Preparation method and application of temperature-responded silver nanocluster/polymer hydrogel composite material
  • Preparation method and application of temperature-responded silver nanocluster/polymer hydrogel composite material
  • Preparation method and application of temperature-responded silver nanocluster/polymer hydrogel composite material

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specific Embodiment approach 1

[0037] Specific embodiment one: the preparation method of the temperature-responsive silver nanocluster / polymer hydrogel composite material of this embodiment comprises the following steps:

[0038] 1. Dissolve the temperature-sensitive polymerizable monomer A in deionized water, put it into a three-necked flask, and dissolve it ultrasonically at room temperature to form a uniform mixed solution. Under low temperature, stir mechanically for 40-120min, remove the air in the system, gradually raise the temperature to 60-80°C, add the aqueous solution of the initiator to the system to initiate polymerization, react under the protection of nitrogen, and end in 4-24h to obtain the solution;

[0039] Wherein the molar mass of thermosensitive polymerized monomer A and the volume ratio of deionized water are (1-3) mmol: (20-40) ml, and the mol ratio of thermosensitive polymerized monomer A and polymerized monomer B is ( 5-15): (0.002-0.015), the molar mass of the initiator in the aque...

specific Embodiment approach 2

[0043] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the temperature-sensitive polymerizable monomer A is N-isopropylacrylamide, ethylene caprolactam, nitrogen-vinyl caprolactam or N, N-diethyl Acrylamide. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, the polymerized monomer B is acrylic acid, methacrylic acid or sodium methacrylate. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method and application of a temperature-responded silver nanocluster / polymer hydrogel composite material, relates to a preparation method and application of a silver nanocluster / polymer hydrogel composite material, and aims to solve the problems that an existing method for detecting hexavalent chromium ions needs to depend on a large analyzing tester or sample preparation is difficult, detection time is long and the like. The method comprises the following steps: firstly, dissolving weighed temperature-sensitive polymeric monomers A in deionized water, adding polymeric monomers B, mechanically stirring, heating, adding an initiator, and reacting under protection of nitrogen to obtain a solution; secondly, placing the solution in a centrifugal tube, carrying out centrifuging, and taking supernate after centrifuging to obtain a polymeric hydrogel nanoparticle solution; and thirdly, weighing silver nitrate, adding the silver nitrate in the polymeric hydrogel nanoparticle solution, and carrying out photoreduction under ultraviolet light to obtain the temperature-responded silver nanocluster / polymer hydrogel composite material. The preparation method is used for preparing fluorescent metal nanoclusters.

Description

technical field [0001] The invention relates to a preparation method and application of a silver nanocluster / polymer hydrogel composite material. Background technique [0002] In recent years, fluorescent metal nanoclusters have attracted extensive attention due to their unique optoelectronic properties. It has broad application prospects in luminescence display, chemical detection, biomedicine, catalysis and other fields. [0003] Stimuli-responsive materials can adapt to the surrounding environment through reversible or irreversible changes by adjusting their own physical or chemical properties when receiving external stimuli. In recent years, stimuli-responsive polymer fluorescent nanoclusters have been widely used in chemical detection, material analysis, optical material preparation and other fields due to their fast, stable and sensitive characteristics. At present, in the research work of responsive polymer materials, materials based on temperature-responsive polyme...

Claims

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Application Information

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IPC IPC(8): C08J3/28C08J3/075C08L33/24C08K3/08C08F220/54C08F220/06C08F2/22G01N21/64C09K11/58C09K11/02
CPCC08J3/28C08F2/22C08F220/54C08J3/075C08J2333/24C08K3/08C08K2003/0806C08K2201/011C09K11/025C09K11/58G01N21/643C08F220/06C08L33/24
Inventor 杨旭东马伊男刘雪雁沈夕然高思雨贾菲苏春彦朴明俊
Owner CHANGCHUN UNIV OF TECH
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