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Preparation method of inverse opal hydrogel photonic crystal with hybridized structure

An inverse opal, hybrid structure technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of limited application, high material cost, upper pattern display affected by lower background, etc.

Inactive Publication Date: 2010-02-24
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the pattern has been realized in the literature to change among multiple colors, its wide application is limited due to the high cost of materials used and the display of the upper layer pattern being affected by the background of the lower layer.

Method used

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  • Preparation method of inverse opal hydrogel photonic crystal with hybridized structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) Disperse the homogeneous monodisperse silica microspheres in ethanol to form a solution with a mass fraction of 4%, then pour the solution into a clean container, and finally insert the clean substrate vertically into the liquid surface The above-mentioned container containing the monodisperse silica microsphere solution is placed in a closed environment at room temperature for one week to deposit the silica microspheres on the surface of the substrate and form opal colloidal crystals on the surface of the substrate; the substrate is Glass or silicon wafer; the diameter of the silica microspheres is 180nm;

[0012] (2) Immerse the base vertical liquid surface of the opal colloidal crystal formed on the surface obtained in step (1) in the polyacrylic acid monomer solution for 3 minutes, the concentration of the polyacrylic acid monomer solution is 5M, and the polyacrylic acid monomer solution contains a mass fraction of 10 % crosslinking agent N, N'-methylenebisacryl...

Embodiment 2

[0015] (1) Disperse the homogeneous monodisperse silica microspheres in ethanol to form a solution with a mass fraction of 1%, then pour the solution into a clean container, and finally insert the clean substrate vertically into the liquid surface The above-mentioned container containing the monodisperse silica microsphere solution is placed in a closed environment at room temperature for one week to deposit the silica microspheres on the surface of the substrate and form opal colloidal crystals on the surface of the substrate; the substrate is Glass or silicon wafer; the diameter of the silica microspheres is 232nm;

[0016] (2) Immerse the base vertical liquid surface of the opal colloidal crystal formed on the surface obtained in step (1) in the polyacrylic acid monomer solution for 3 minutes, the concentration of the polyacrylic acid monomer solution is 4M, and the polyacrylic acid monomer solution contains 5 % crosslinking agent N, N'-methylenebisacrylamide and 3% photoin...

Embodiment 3

[0019] (1) Disperse the homogeneous monodisperse silica microspheres in ethanol to form a solution with a mass fraction of 0.5%, then pour the solution into a clean container, and finally insert the clean substrate vertically into the liquid surface The above-mentioned container containing the monodisperse silica microsphere solution is placed in a closed environment at room temperature for one week to deposit the silica microspheres on the surface of the substrate and form opal colloidal crystals on the surface of the substrate; the substrate is Glass or silicon wafer; the diameter of the silica microspheres is 300nm;

[0020] (2) Immerse the base vertical liquid surface of the opal colloidal crystal formed on the surface obtained in step (1) in the polyacrylic acid monomer solution for 3 minutes, the concentration of the polyacrylic acid monomer solution is 1M, and the polyacrylic acid monomer solution contains a mass fraction of 1 % crosslinking agent N, N'-methylene bisacr...

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Abstract

The invention provides a preparation method of inverse opal hydrogel photonic crystal with hybridized structure. Polymer interpenetrating network method is adopted to prepare the crystal. The preparation method has the advantages that: the raw materials are polyacrylic acid and polyacrylamide which are available, and the preparation method includes two filling gather steps and is simple and practicable; the polyacrylic acid and polyacrylamide respectively contains carboxyl and amide functional group, thus realizing pH and solvent sense response, and not only the pattern obtained by hybridizedstructure can be converted between display state and disappeared state but also reversible transformation among multiple color states such as yellow, green and blue can be realized by controlling pH value or alcohol content in water.

Description

technical field [0001] The invention provides a method for preparing an inverse opal hydrogel photonic crystal with a hybrid structure. Background technique [0002] Photonic crystals are a periodic structure composed of materials with different refractive indices alternating in space. Due to the existence of the photonic band gap, people can control various wavelengths of light by designing the band gap, and obtain a variety of new optical devices. Among them, the photonic crystal constructed by hydrogel can greatly adjust the position of the photonic band gap under different external stimuli to control the propagation of light. This material is gradually being developed into various sensors, displays and biomimetic materials. Usually, the structure of hydrogel photonic crystals is polymerized crystal colloidal array structure, opal structure and inverse opal structure. The inverse opal structure has great advantages in the application of hydrogel photonic crystals becaus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/00C08J9/26C08L33/02C08L33/26C03C17/32
Inventor 韩艳春王建颖邢汝博
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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