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CN-119471885-B - Photonic crystal-dye-transparent polymer composite reflection/transmission-based integrated color filter and preparation method thereof

CN119471885BCN 119471885 BCN119471885 BCN 119471885BCN-119471885-B

Abstract

The invention discloses a photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter and a preparation method thereof, wherein the color filter consists of a protein Dan Guangzi crystal template formed by nano microspheres and a dye-transparent polymer composite filled in gaps of the protein Dan Guangzi crystal template, and through compositing of the nano microspheres, the dye and the transparent polymer, the photonic crystal and the dye can cooperatively filter visible light with specific wavelength and have two filtering modes of reflection and transmission, the light absorption characteristic of the dye can widen the absorption peak width of the photonic crystal, a high-purity filtering effect is generated in the reflection mode, the photonic band gap of the photonic crystal can adjust the light cut-off band of the dye, a high-purity filtering effect is formed in the transmission mode, and finally the photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter with high-purity color output is realized, has stable properties and has wide application prospects in the fields of display, optical instruments and the like.

Inventors

  • ZHANG SHUFEN
  • LI SHI
  • NIU WENBIN
  • TANG BINGTAO
  • MA WEI
  • WU SULI

Assignees

  • 大连理工大学

Dates

Publication Date
20260508
Application Date
20241107

Claims (6)

  1. 1. The color filter is characterized by comprising a protein Dan Guangzi crystal template formed by nano-microspheres and dye-transparent polymer composites filled in gaps of the protein Dan Guangzi crystal template, wherein the color filter is provided with two filtering modes of reflection and transmission by compounding the nano-microspheres, the dye and the transparent polymer; The color filter comprises the following components in percentage by volume: 10% -74% of nano-microspheres and 26% -90% of dye-transparent polymer compound, wherein the mass ratio of dye to transparent polymer in the dye-transparent polymer compound is 1:10-1:1000; The nano microspheres comprise one or more than two of silica coated cerium dioxide, silica coated zinc sulfide, silica coated titanium dioxide, silica coated zinc oxide, silica coated cadmium sulfide, silica coated polystyrene, titania coated silica, polystyrene, cerium dioxide, titania, cadmium sulfide, zinc oxide and zinc sulfide nano microspheres; the dye comprises one or more than two of perylene dye derivatives, azo dye derivatives, anthraquinone dye derivatives and phthalocyanine dye derivatives; The transparent polymer is formed by polymerizing polyimide, polycarbonate, polyurethane, polysulfone, epoxy resin, polystyrene, acrylic compounds and acrylic compounds serving as monomer components.
  2. 2. The photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter according to claim 1, wherein the reflection wavelength of the color filter is 380 nm-780 nm.
  3. 3. The photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter according to claim 1, wherein the cross-sectional thickness of the protein Dan Guangzi crystal template is 1 um to 90 um.
  4. 4. The photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter according to claim 1, wherein the diameter of the nano-microsphere is 100 nm-800 nm, and the particle size distribution is 0.01-0.20.
  5. 5. The photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter according to claim 1, wherein the perylene dye derivative comprises one or more of 1,6,7,10-dibromoperylene diimine, 1,6,7,10-dialkoxyperylene diimine, 1,6,7,10-diaryloxy perylene diimine, 1,6,7,10-dialkylaminoperylene diimine, 1, 7-dibromoperylene diimine, 1, 7-dialkoxy perylene diimine, 1, 7-diaryloxy perylene diimine, 1, 7-dialkylaminoperylene diimine, perylene dicarboxylate, perylene tetracarboxylic acid ester; the azo dye derivative comprises azo dye taking one or more than two of pyrazolone, pyridone, thiazole and aromatic amine derivatives as coupling components; The anthraquinone dye derivative comprises one or more than two of 1, 4-dialkylamino substituted anthraquinone dye, 1, 4-diarylamino substituted anthraquinone dye, 1, 5-diarylamino substituted anthraquinone dye, 1, 8-dialkylamino substituted anthraquinone dye, 1, 8-diarylamino substituted anthraquinone dye, 1, 8-hydroxyanthraquinone, 1, 8-aminoanthraquinone, 1, 8-dichloroanthraquinone, 1, 4-hydroxyanthraquinone, 1, 4-aminoanthraquinone, 1, 4-dichloroanthraquinone, 1, 5-hydroxyanthraquinone, 1, 5-aminoanthraquinone and 1, 5-dichloroanthraquinone; the phthalocyanine dye derivative comprises one or more than two of lanthanum phthalocyanine, silicon phthalocyanine, aluminum phthalocyanine, copper phthalocyanine, nickel phthalocyanine, zinc phthalocyanine, cobalt phthalocyanine and iron phthalocyanine.
  6. 6. A method for manufacturing a photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter according to any one of claims 1 to 5, comprising the steps of: the nanometer microsphere is used as a raw material to obtain a protein Dan Guangzi crystal template by a self-assembly method; Dissolving a transparent polymer and a dye in a solvent to obtain a mixed solution; and filling the mixed solution into a gap of the protein Dan Guangzi crystal template, and heating and curing for 30-600 min at 50-120 ℃ to obtain the photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter.

Description

Photonic crystal-dye-transparent polymer composite reflection/transmission-based integrated color filter and preparation method thereof Technical Field The invention relates to the technical field of optical filters, in particular to a photonic crystal-dye-transparent polymer composite reflection/transmission integrated color optical filter and a preparation method thereof. Background In the world driven by today's increasing technology, filters are a simple optical conditioning device. It is widely used in laser experiments, displays, spectroscopic analysis, optical measurements, etc. (Nat. Nanotechnol.2012,7,557.; lab Chip,2006,6,981-987). The optical filter with high-purity filtering effect not only can realize high-precision imaging and detection of biological samples, but also is used in laser surgery and laser treatment equipment, and can realize precise cutting and repair of pathological tissues by precisely controlling the laser wavelength and power (Sensor actuat B-chem.,2017,242,318-323). In addition, the optical filter with the high-purity optical filtering effect is applied to a display, so that the optical filter not only brings the visual enjoyment experience of the person on the scene, but also has the high-quality display effect almost harmless to the eyes of the person. The filters are mainly divided into two main types, dye absorption filters and structural filters (adv. Opt. Mater.2020,8,2000317). The dye absorption type filter is based on absorption of light by the dye to achieve a filtering effect. Although dye filters have high transmittance, dye structural molecule designs are complex, and existing filters or coatings based on conventional dyes or pigments are susceptible to various damages under long-term Ultraviolet (UV) irradiation and high temperatures (adv. Opt. Mater.2017,5,1700029.). Another type of optical filter is a micro-nano structured optical filter developed based on the diffraction, interference and scattering effects of micro-nano structures and light. The micro-nano structure comprises a photonic crystal, all metal, all medium and other structures, and the color generated by the micro-nano structure is generally adjustable in wavelength and half-peak width, so that the micro-nano structure optical filter has the advantages of color adjustability, light stability, heat stability and the like. However, the refractive index difference of the medium often causes an increase of light scattering phenomenon in the structure, so that the purity and intensity of the reflected light of the optical filter are greatly weakened, the average visible light transmittance of the optical filter is reduced, and the improvement of the color saturation/purity of the device is limited to a certain extent. Therefore, attempts have been made to combine dyes with structural colors to synergistically construct high purity filters. For example, l.jay Guo et al incorporate ultra-thin dye films into conventional dielectric-absorber-dielectric-metal resonator configurations to produce high purity reflective structural colors (adv.opt.mate.2017, 5,1700029.). Yong Li et al reported the development of a dichroic dye doped flexible cholesterol polymer thin film optical filter with a bilayer structure that exhibited excellent stability, high optical density and good visibility (adv. Opt. Mater.2021,9,2001861.). However, the above dye and structural color composite filter is limited to the preparation of reflective filters. It is therefore still a challenge to realize a reflection/transmission integrated color filter having a high purity filtering effect. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a photonic crystal-dye-transparent polymer composite reflection/transmission integrated color filter and a preparation method thereof, wherein the color filter consists of a protein Dan Guangzi crystal template formed by nano microspheres and dye-transparent polymer composites filled in gaps of the protein Dan Guangzi crystal template, wherein the photonic crystal is used for absorbing and purifying photonic crystal band gap reflection light by utilizing dye which is absorbed and not overlapped with a photonic band gap, and meanwhile, the photonic crystal and the dye can cooperatively filter visible light with specific wavelength and have two filtering modes of reflection and transmission, the absorption characteristic of the dye can widen the absorption peak width of the photonic crystal and generate high-purity filtering effect in the reflection mode, the photonic band gap of the photonic crystal can adjust the light cut-off wave band of the dye and form high-purity filtering effect in the transmission mode, and finally, high-purity color output is respectively realized at two sides of the filter. In order to achieve the above purpose, the technical scheme of the invention is as follows: The color filter consists of a protein Dan Guangzi crystal template