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Method for producing nano-stephanoporate intelligent photochemistry sensitization functional material

A nanoporous, functional material technology, applied in the measurement of phase influence characteristics, etc., can solve the problems of high cost, long cycle, complex detection methods, etc., and achieve the effects of convenient detection, fast response speed, and high anti-interference ability.

Inactive Publication Date: 2008-07-16
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of intelligent photochemically sensitive functional material has high specificity and sensitivity to substances containing imprinted molecules, and can express the process of molecular recognition through optical signals, so it can be used to make sensitive components of high-performance sensors and solve the problem of current opponents. Practical problems such as complex detection methods for sexual drug molecules, stimulants, amino acids, and proteins, long cycle times, and high costs

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0013] A preparation method of a nanoporous intelligent photochemically sensitive functional material provided by the present invention, the specific process steps are as follows:

[0014] 1) Firstly, the monodisperse colloidal particle silica microspheres or polystyrene microspheres are uniformly dispersed in the solvent to form a uniform and stable colloidal dispersion system, and then the colloidal particles are self-assembled on a clean and flat surface. A three-dimensional ordered colloidal particle array is grown on the sheet, and after the solvent is completely volatilized, a colloidal crystal with a three-dimensional ordered structure is obtained; the solvent is water, ethanol or a mixed solution of water and ethanol;

[0015] 2) Select polymer monomers and cross-linking agents according to different imprinted molecules, then add polymer monomers, cross-linking agents and imprinted molecules into organic solvents, and control the volume ratio of polymer monomers to cros...

Embodiment 1

[0022] Example 1: Preparation method of intelligent photochemically sensitive functional material for detection of chiral drug molecule L-dopa. Firstly, monodisperse silica colloidal particles are uniformly dispersed in ethanol to form a colloidal particle dispersion system with a mass concentration of 1%. Then insert a glass slide with a clean and flat surface vertically into the uniform and stable colloidal silica dispersion system, and place it in a quiet, air-free environment. After the ethanol is completely volatilized, the silica Silicone colloidal crystals. Then 4 milliliters of methacrylic acid and 2 milliliters of vinyl glycol dimethacrylate were dissolved in a mixed solvent of 4 milliliters of methanol and 2 milliliters of distilled water, and at the same time, 0.02 grams of imprinted molecule L-dopa was added to dissolve completely Finally, the polymer monomer dispersion system containing the imprinted molecule L-dopa was left to stand for 12 hours, then 0.01 g of ...

Embodiment 2

[0023] Example 2: Preparation method of intelligent photochemically sensitive functional material for detection of theophylline and caffeine. Firstly, monodisperse silica colloidal particles are uniformly dispersed in ethanol to form a colloidal particle dispersion system with a mass concentration of 1%. Then insert a glass slide with a clean and flat surface vertically into the uniform and stable colloidal silica dispersion system, and place it in a quiet, air-free environment. After the ethanol is completely volatilized, two Silica colloidal crystals. Then 1 milliliter of acrylic acid and 5 milliliters of divinylbenzene are dissolved in 60 milliliters of dichloromethane solvent, and at the same time, 0.5 grams of the imprinted molecule theophylline is added. After completely dissolving, the polymer monomer containing the imprinted molecule theophylline is dispersed The system was left to stand for 6 hours, and then 0.01 g of azobisisobutyronitrile was added, and nitrogen ga...

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PUM

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Abstract

The invention discloses a method for preparing nanoporous intelligent photochemical sensitive functional material, pertaining to the functional high molecular material field. A colloidal crystal template is formed by automatic assembly of colloidal particles and is wetted with solution of polymer monomer, corsslinking agent and initiator that contain imprinting molecular, and blotting polymer is prepared with ultraviolet light or through heat curing, then the template and the blotting molecular in the blotting polymer are removed and polymer membrane that has three-dimensional ordered porous structure and blotting molecular cavities is obtained. The intelligent photochemical sensitive functional material prepared by the method not only has high selectivity, sensitivity and interference rejection property but also can directly change chemical response into optical signals without any complicated precision instrument or making special treatment to analytes. The method is characterized by simple preparation technique and convenient and rapid inspection, etc., thereby being widely applicable to fields of medicine separation and identification, immunologic diagnosis and analysis and drug and exhilarant inspection, etc.

Description

technical field [0001] The invention relates to a method for preparing a nanoporous intelligent photochemically sensitive functional material with a photonic crystal structure, in particular to a method for constructing a nanoporous intelligent nanoporous polymer material using colloidal crystal self-assembly technology and molecular imprinting technology, which belongs to the high-function Molecular materials preparation technology field. Background technique [0002] A colloidal crystal is a material whose dielectric constant (or refractive index) changes periodically, and the periodic change of its dielectric constant can modulate the state mode of photons in the material. If the properties of a certain component in the material change physically or chemically, the refractive index of the medium will also change. According to Bragg scattering, it can be known that the photon band gap will be red-shifted or blue-shifted. Chemical sensors can be prepared by using the chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J9/26C08F2/44C08F220/06C08F220/56C08F226/06G01N21/41
Inventor 李广涛胡晓斌黄婧李默涵武真
Owner TSINGHUA UNIV
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