Preparation method of flawless photonic crystal

A photonic crystal, crack-free technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., to achieve the effect of increasing peak intensity, improving optical performance, and good regulation.

CN102691106BActive Publication Date: 2015-01-21INST OF CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-01-21

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Abstract

The invention relates to a super fast preparation method of a flawless photonic crystal. The method of the invention employs spin coating, spraying or ink-jet printing, and comprises the steps of: mixing monodisperse emulsion particles, water-soluble polymer monomer, cross-linking agent, initiator and water to obtain a mixed emulsion, and coating or printing the mixed emulsion to the surface of a hydrophilic flexible base material; then carrying out thermal initiation polymerization on water-soluble polymer monomers among the monodisperse emulsion particles in the mixed emulsion to form a polymer, so as to obtain a flawless large-area composite opal structured photonic crystal, which uses the monodisperse emulsion particles as a skeleton and has polymer filled in gaps of the monodisperse emulsion particle skeleton, or a flawless and large-area patterning composite band gap composite opal structured photonic crystal, which uses the monodisperse emulsion particles as a skeleton and has polymer filled in gaps of the monodisperse emulsion particle skeleton. The monodisperse emulsion particles used as the skeleton in the composite opal structured photonic crystal are further dissolved by a solvent to obtain a flawless large-area inverse opal structured photonic crystal and a flawless and large-area patterning composite band inverse opal structured photonic crystal.
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Description

technical field

[0001] The invention relates to an ultra-fast preparation method for high-performance, crack-free photonic crystals by spin coating, spray coating or inkjet printing, in particular to crack-free composite opal-structure photonic crystals, crack-free inverse opal-structure photonic crystals, crack-free and patterned Ultrafast fabrication method of composite opal-structured photonic crystals with composite bandgap, and crack-free and patterned composite-bandgap inverse opal-structured photonic crystals. Background technique

[0002] Since the advent of photonic crystals in 1987, due to their special light regulation properties, they have broad application prospects in optics, electronics, chemistry, biochemistry and other fields. The use of chemical self-assembly to prepare photonic crystals has the advantages of low cost and simple operation, which attracts the research interests of scientific researchers. However, in the process of preparing photonic crystal...

Examples

Embodiment 1

[0030] Ultrasonic dispersion of monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particles with a particle size of 80 nm, acrylic acid, N-N'-methylenebisacrylamide crosslinking agent and potassium persulfate initiator in water , forming a mixture emulsion (the concentration of the mixture emulsion is 0.1102wt%), wherein, the concentration of the monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particle in the mixture emulsion is 0.1wt%, acrylic acid and monodisperse poly The mass ratio of (styrene-methyl methacrylate-acrylic acid) latex particles is 0.1: 1, and the mass ratio of acrylic acid: N-N'-methylenebisacrylamide: potassium persulfate is 1: 0.01: 0.01; The mixture emulsion obtained above was spin-coated onto the surface of an aluminum foil with a thickness of 0.02 mm, and then the monodisperse poly(styrene-methyl methacrylate-acrylic acid) The latex particles self-assembled on the surface of the aluminum foil, and at the same time therm...

Embodiment 2

[0032] Monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particles with a particle size of 1100nm, acrylamide, N-N'-methylenebisacrylamide crosslinking agent, ammonium persulfate and potassium persulfate The mixture (the mass ratio of ammonium persulfate and potassium persulfate is 1:1) is ultrasonically dispersed in water to form a mixture emulsion (the concentration of the mixture emulsion is 33.36wt%), wherein the monodisperse poly(styrene-formaldehyde) in the mixture emulsion The concentration of poly(styrene-methyl methacrylate-acrylic acid) latex particles is 30wt%, the mass ratio of acrylamide and monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particles is 0.1:1, acrylamide: N-N' - methylenebisacrylamide: the mass ratio of the mixture of ammonium persulfate and potassium persulfate is 1: 0.06: 0.06; the mixture emulsion obtained above is sprayed onto the surface of titanium foil with a thickness of 0.7mm, and then heated at a temperatur...

Embodiment 3

[0034] Monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particles with a particle size of 80nm and a particle size of 250nm were mixed with crotonic acid, N-N'-methylenebisacrylamide crosslinking agent and The mixture of ammonium persulfate, potassium persulfate and azobisisobutyronitrile (the mass ratio of the three is 1:1:1) is ultrasonically dispersed in water to form a mixture emulsion (the concentration of the two mixture emulsions is 7.04wt%), Wherein, in 2 kinds of mixture emulsions, the concentration of two kinds of monodisperse poly(styrene-methyl methacrylate-acrylic acid) latex particles is 5wt% respectively, crotonic acid and monodisperse poly(styrene-methyl methacrylate) The mass ratio of -acrylic acid) latex particles is 0.4: 1, and the mass ratio of crotonic acid: N-N'-methylenebisacrylamide: the mixture of ammonium persulfate, potassium persulfate and azobisisobutyronitrile is all 1: 0.01: 0.01; the two mixture emulsions obtained above were res...