394 results about "Dye molecule" patented technology

The invention provides a large-model-assisted dynamic configuration and quick response method for a knitting production line, and the method comprises the steps: obtaining the historical data of the knitting production line according to the dye molecular weight, the dye polar group number and the dye molecular space structure as dye property parameters, and constructing a dye property data warehouse; according to historical data of a knitting production line, dye molecular structure parameters, yarn surface morphology, material characteristics and friction coefficient test data are selected, and a correlation prediction model of dye properties and yarn friction coefficients is constructed; according to dye properties and friction coefficient distribution characteristics, performing clustering grouping on dye formula compositions, determining dye combinations having similar influence on yarn friction coefficients, and forming a dye formula and friction coefficient mapping library; knitting mechanical structure parameters, a knitting needle motion trail equation, a fabric organization structure matrix and fabric density parameters are obtained and combined with a dye formula and friction coefficient mapping library, and a weaving process digital twinning model is constructed.

The invention discloses an AIE type fluorescent probe with tumor targeting as well as preparation and application thereof, and belongs to the technical field of medicines, the probe can accurately target HDAC6 high-expression tumor cells, the specific binding capacity of the probe reduces interference to normal cells, and the detection accuracy is improved. The probe is fused with AIE performance dye molecules and emits strong fluorescence during aggregation, so that the imaging sensitivity and definition are remarkably enhanced. By optimizing the structure and synthesis conditions, the fluorescence intensity and stability of the probe are improved, the sensitivity of early tumor detection is ensured, and the survival rate and life quality of patients are improved. The preparation method is simple, convenient, feasible, low in cost and beneficial to practical application. The probe can be used for preparing tumor detection products, assisting in tumor diagnosis and classification, monitoring treatment changes and evaluating the curative effect. High-precision imaging can be realized in the aspect of tumor imaging, the method can be used for evaluating curative effect and guiding formulation of subsequent treatment schemes, and the application prospect is wide.

The present invention discloses a preparation method of yellow azoxy and azo stilbene dyes. Using 4-nitrotoluene-2-sulfonic acid as a raw material and water as a reaction solvent, in the presence of choline hydroxide, dye yellow 11 is obtained through a condensation reaction. The molecular structure of choline hydroxide contains a quaternary ammonium salt group and a hydroxyl group. The hydroxyl group provides additional hydrophilicity, which helps to improve the solubility and dispersibility of the dye in an aqueous medium and enhance the affinity between the dye and the fiber. Choline hydroxide can effectively provide the alkaline environment required for the reaction, promote the synthesis reaction of the dye, and better control the selectivity and yield of the reaction. Since the choline hydroxide molecule contains a hydroxyl group, it can form hydrogen bonds with the sulfonic acid groups in the dye molecule, enhance the stability between dye molecules, and improve the light fastness and acid and alkali resistance of the dye. Using choline hydroxide not only optimizes the reaction conditions, improves the purity and yield of the dye, but also significantly improves the performance of dye yellow 11.

The invention provides an aza-BODIPY dye molecule with near-infrared two-region absorption, 4-cyanophenyl is used as an electron acceptor for modification at 1, 7 sites, thiophene-triphenylamine is used as a strong electron donor for modification at 3, 5 sites, an aza-BODIPY dye with extremely strong intramolecular charge transfer is constructed, the absorption spectrum of the aza-BODIPY dye is extended to 1100 nm, and after the aza-BODIPY dye molecule forms an aggregation state, the absorption spectrum of the aza-BODIPY dye molecule has strong absorption spectrum. The aza-BODIPY dye molecule has the advantages that the absorption spectrum of the aza-BODIPY dye molecule is extended to 1250nm, the aza-BODIPY dye molecule has good absorption in an NIR-II region, and the nano-particles prepared by self-assembling the aza-BODIPY dye molecule and the amphiphilic polymer F127 show 46.2% of high photothermal conversion efficiency under the excitation of 1060nm laser, can be used for photoacoustic imaging and photothermal therapy, and can be used for preparing the nano-particles. The problems that tissue penetrability is insufficient and deep tumors cannot be diagnosed and treated in traditional tumor light diagnosis and treatment are solved.

The invention discloses a red xanthene dye for blue photoresist color paste and a synthesis method of the red xanthene dye, and the synthesis method comprises the following steps: (1) sulfonyl chlorination reaction: carrying out sulfonyl chlorination reaction on xanthene molecules B containing two sulfonate radicals by using a chlorination reagent, and carrying out post-treatment to obtain a sulfonyl chloride intermediate C; and (2) esterification reaction: carrying out esterification reaction on the sulfonyl chloride intermediate C obtained in the first step by utilizing an esterification reagent, and carrying out post-treatment to obtain the target red xanthene dye A with methacrylamide at the tail end. The invention provides a novel xanthene dye molecule which can be mixed with a blue pigment color paste to prepare a blue photoresist color paste for improving the brightness of the color paste. In addition, the liquid crystal composition has the advantages of high transparency, high contrast ratio, good dispersity, relatively high covering power, tinting strength and the like, and is good in thermal stability and light stability; meanwhile, the synthesis method provided by the invention is simple, low in cost and easy for large-scale production.

The embodiment of the invention relates to the field of photomasks, and provides a photomask protective film frame and a preparation method thereof, the photomask protective film frame comprises a frame main body made of a metal material and a coating formed on the surface of the frame main body, and the photomask protective film frame is characterized in that the coating is at least composed of carbon black, silicon dioxide particles and organic dye. The nanoscale carbon black in the coating has a high light absorption coefficient, fills gaps of dye molecules and forms a continuous light absorption network, the organic dye enhances absorption of light with specific wavelength through a molecular structure conjugated system, and the nanoscale carbon black and the organic dye form a composite function of broad-spectrum absorption and accurate waveband adjustment, so that more than 95% of light is absorbed in a broad-waveband range, light reflection on the surface of the frame is reduced, and the light absorption efficiency is improved. Pattern distortion caused by reflected light in the photoetching process is avoided, silicon dioxide is embedded into an organic dye matrix, silicon dioxide gaps are filled with carbon black particles, the porosity of the coating is reduced, the wear resistance of the coating is improved, and the cracking risk of the coating is reduced. Optical absorption, wear resistance and weather resistance are synchronously improved.

The invention provides a benzobis (thiadiazole) near-infrared two-region fluorescent dye molecule and a preparation method thereof, and the preparation method comprises the following steps: by taking a benzobis (thiadiazole) derivative as a raw material, introducing 3, 4-ethylenedioxythiophene through a Stille cross-coupling reaction; the preparation method comprises the following steps: carrying out bromination with N-bromosuccinimide, introducing a cyanated dibenzocarbazole derivative through a Suzuki cross-coupling reaction, and finally carrying out reduction and cyclization reactions to synthesize the end cyano-functionalized near-infrared two-region fluorescent small molecular dye. The receptor-donor-receptor-donor-receptor (A '-D-A-D-A') structure near-infrared two-region fluorescence molecule disclosed by the invention has the properties of long absorption wavelength, high fluorescence quantum yield, high fluorescence brightness and the like, and has a wide application prospect in the field of near-infrared two-region fluorescence imaging.

The invention discloses a zinc oxide photocatalytic composite material taking porous carbon silicon as a carrier as well as a preparation method and application of the zinc oxide photocatalytic composite material. The photocatalytic composite material is prepared from the porous carbon silicon as the carrier and zinc oxide with active sites. Compared with a pure zinc oxide material, the zinc oxide can be attached to the surface of the carrier porous carbon-silicon material or coated inside the carrier porous carbon-silicon material, and meanwhile, the carrier porous carbon-silicon material provides rich pore tissues, so that coloring agent molecules can be effectively adsorbed and captured, and the coloring agent is more stable in performance. The contact probability and area of zinc oxide active sites and coloring agent molecules are increased, so that the zinc oxide can fully play a role in photocatalytic degradation of dye molecules; and under the condition of the same amount of zinc oxide, the porous carbon-silicon loaded zinc oxide has a stronger photocatalytic degradation effect.

Provided herein are red blood cell control compositions comprising one or more populations of lysable hydrogel particles having an impedance that is substantially similar to the impedance of a human red blood cell of average diameter; and a population of hemoglobin molecules or a population of dye molecules that have substantially similar absorbance as hemoglobin; wherein (i) and / or (ii) are present in an amount that corresponds to a normal blood sample or disease state, or (i) and (ii) are present at a ratio that corresponds to a normal blood sample or disease state.

The invention relates to the field of recyclable textile fiber dyeing, in particular to a textile fiber stripping cyclic regeneration method based on preset dye dyeing, and provides a preset dye which is an azo structure dye, the azo structure dye molecule contains a group capable of being reduced by a reducing agent, and the preset dye is an azo structure dye. The preset dye for dyeing the recycled textile fibers is used for dyeing cashmere or wool fibers, yarns or fabrics; according to the method, the recycling rate of textile fibers is improved, namely opening, stripping, re-dyeing and textile processing are carried out in the textile and garment processing process or used waste textiles, the selection and design method of the preset dye which is of a specific structure and is used for dyeing the recycling textile fibers is provided, and the quality requirements of color fastness and the like of products are met.

The invention relates to a near-infrared small-molecule fluorescent dye with a pentadecamethine conjugated chain and a preparation method and application thereof, the near-infrared small-molecule fluorescent dye has a structure as shown in a general formula A, and is a novel dye matrix based on two benzoindole structures connected by a pentadecamethine chain, the functional dye molecule with the absorption and emission peak wavelength in the near-infrared region is obtained through regulation and control of substituent groups on a parent structure, and different substituent groups can be introduced to a fifteen-membered methine chain and an indole N atom. The absorption and emission wavelength is in a near-infrared region of 1100-1300nm, and the material has the characteristics of high brightness, excellent light stability, low cytotoxicity, simplicity and convenience in synthesis, easiness in structure modification and the like. After water-soluble modification, the polymer can be widely applied to the biomedical fields of tumor targeting imaging, living body angiography and the like. General formula A # imgabs0 #

The invention discloses a preparation method of a nano titanium dioxide modified ultrafiltration membrane. The preparation method comprises the following specific preparation steps: 1) preparing casting liquid; (2) casting liquid containing nano titanium dioxide is prepared through centrifugation; (3) coating; 4) drying; and finally obtaining the nano titanium dioxide composite ultrafiltration membrane. According to the nano titanium dioxide modified ultrafiltration membrane disclosed by the invention, the modified nano titanium dioxide is uniformly dispersed in the PES ultrafiltration membrane, so that the pore size and the surface roughness of the ultrafiltration membrane are improved, and the retention rate of the membrane on dye molecules is greatly improved under the condition that the flux of the ultrafiltration membrane is slightly lost; meanwhile, the anti-pollution regeneration performance of the membrane is improved.

The invention relates to the technical field of wastewater treatment, and discloses a dynamic circulation type chitosan column azo dye wastewater treatment system which comprises an integrated reaction column which is vertically arranged, a water inlet is formed in the bottom of the integrated reaction column, a water outlet is formed in the top of the integrated reaction column, and a composite functional fiber felt of a roll-shaped structure is arranged in the integrated reaction column. An inert anode is arranged in the center of the interior of the integrated reaction column, the composite functional fibrofelt is used as a distributed cathode, azo dye wastewater enters the integrated reaction column from a water inlet, dye molecules in the wastewater are adsorbed by the composite functional fibrofelt and then are discharged from a water outlet, and the wastewater is recycled. The composite functional fiber felt comprises a modified chitosan component used for adsorbing azo dye, a conductive component enabling the composite functional fiber felt to have conductivity, and a piezoelectric component capable of generating an electric field under mechanical stress. Two output contacts of the electric field applying device are respectively connected with the inert anode and the distributed cathode, and the electric field applying device is used for applying an electric field in a regeneration stage; provided is a mechanical vibration applying device. The adsorption-regeneration-degradation process is integrated in a single reactor, and in-situ self-cleaning and function recovery are achieved through self-sensing and intelligent control. The problem that in the prior art, after the adsorption column is saturated, off-line regeneration or replacement is needed is thoroughly solved.

The invention relates to the technical field of immunochromatography, in particular to time-resolved fluorescent microspheres, a preparation method and application of the time-resolved fluorescent microspheres in PSP / CRP / MxA quantitative detection immunochromatography test strip, and the preparation method of the time-resolved fluorescent microspheres comprises the following steps: 1) preparing surface aminated polystyrene microspheres; (2) carrying out glutaraldehyde crosslinking and 1, 10-phenanthroline-5-amino combination; 3) grafting a rare earth fluorescent dye on the surface; and 4) coating a polymer shell layer and modifying carboxyl. According to the invention, through a dual fixation strategy of surface grafting and polymer coating, the time-resolved fluorescent dye is confined to a functional region between the surface of the microsphere and a polymer shell layer, diffusion and leakage of dye molecules to the external environment are blocked, and the problem of dye shedding of traditional fluorescent microspheres is solved; the polymer shell layer can effectively isolate external ultraviolet light, oxygen and other corrosive factors, reduce photooxidative degradation and non-radiative transition loss of fluorescent molecules, and improve the light stability and fluorescent lifetime of the fluorescent molecules.

The invention belongs to the technical field of hole sealing reagents, and discloses a high-color-fixation medium-temperature hole sealing agent for an aluminum alloy anodic oxide film as well as a preparation method and application of the high-color-fixation medium-temperature hole sealing agent. The medium-temperature hole sealing agent comprises hole sealing main salt, hole sealing auxiliary salt, a color fixing auxiliary agent and an auxiliary agent, the hole sealing main salt comprises nickel acetate or nickel acetate hydrate; the hole sealing secondary salt comprises at least one of cobalt acetate, magnesium acetate, lithium acetate and calcium acetate; the color fixing auxiliary agent comprises at least one of tannic acid, gallic acid, quercetin, ellagic acid, tannic acid and catechin. According to the medium-temperature hole sealing agent, hole sealing of the aluminum alloy oxidation film is achieved under the medium-temperature (55-65 DEG C) condition, meanwhile, the color fixing process of dye molecules in micropores of the oxidation film is synchronously completed through the effect of the specific color fixing auxiliary, and the problems of uneven hole sealing and color fading caused by a separation technology are solved. And after the hole sealing agent is used for treatment, the binding force of the dye and an oxidation film can be enhanced, and the dye is not easy to fade in a high-temperature and high-humidity environment for a long time.

The invention discloses an inorganic composite environment-friendly coating for photocatalytic air purification and a preparation method of the inorganic composite environment-friendly coating. The coating comprises the following raw material components in parts by mass: 30-60 parts of emulsion; 5 to 20 parts of a porous substance-dye molecularly-TiO2 photocatalytic composite material; 10 to 30 parts of an inorganic filler; 1-5 parts of an auxiliary agent; 10 to 40 parts of water; wherein the porous substance-dye molecularly-TiO2 photocatalytic composite material is a composite material formed by loading dye molecules onto the surface of titanium dioxide on the surface or in pore channels of a porous substance. A more sufficient photocatalytic substrate is provided by utilizing a porous substance, and the photocatalytic capability is promoted by utilizing the light absorption capability of dye molecules, so that the air purification effect is enhanced, and the purification efficiency is improved.

A method for observing a surface includes a) and b). At the a), a material including at least one or more solid luminescent dye molecules is accumulated in a region having an abnormal shape in a substrate or in a structure on the substrate. At the b), the region having the abnormal shape in the substrate or in the structure on the substrate is irradiated with illumination light to acquire the fluorescent image of the solid luminescent dye molecules.

The invention provides a fullerene pyrrolidine enantiomer mediated cholesteric liquid crystal with circular polarization luminescence property and nonlinear anti-saturated absorption property, and a preparation method and application thereof. The method comprises the following steps: dissolving C60, paraformaldehyde and (R / S)-(+ / -)-alpha-methylbenzylamine in an organic solvent, and carrying out heating reflux reaction to obtain fullerene pyrrolidine enantiomer molecules; dissolving in carbon disulfide to obtain an enantiomer solution; dissolving achiral dye molecules in a solvent to obtain a dye solution; and dropwise adding the enantiomer solution and the dye solution into thermotropic liquid crystal molecules, and drying to obtain the thermotropic liquid crystal. The method is simple, the obtained cholesteric liquid crystal system shows a characteristic fingerprint texture and has a periodic spiral structure, and the doping proportion of chiral molecules is easy to adjust; the composite system has good time stability and is not prone to phase separation; the liquid crystal platform shows good circular polarization luminescence performance and third-order nonlinear optical property, and is a cholesteric liquid crystal platform with an integrated function.

The invention relates to a coloring composition, a color photoresist, a color filter and a display device, the coloring composition comprises a dye and a dispersant, the structural formula of the dye is shown as follows: at least one of X, R1, R2, R3, R4, X1, X2, X3 and X4 in dye molecules is configured to be connected with the dispersant through a chemical bond. According to the coloring composition provided by the invention, the dye and the dispersing agent can be connected through chemical bonds, so that precipitation or migration of the dye in the color filter prepared from the coloring composition is avoided, the weather resistance of the dye in the color filter is improved, and the reliability of the display device is improved.

The invention relates to the related technical field of costume fabrics, in particular to a high-antibacterial anti-sunshine costume fabric not prone to fading and a preparation technology, the high-antibacterial anti-sunshine costume fabric comprises a base fiber layer, and an antibacterial finishing layer, an anti-ultraviolet layer and a color fastness enhancing layer are arranged on the base fiber layer. According to the high-antibacterial anti-sunshine clothing fabric not prone to fading and the preparation process, a nano-silver and chitosan composite system is adopted, nano-silver releases silver ions to destroy the physiological structure of bacteria, chitosan inhibits the activity of the bacteria through the amino effect, the nano-silver and the chitosan cooperate with each other, the antibacterial effect of clothing is improved, nano-zinc oxide and titanium dioxide composite sol improve the antibacterial effect of the clothing, and the antibacterial effect of the clothing is improved. Through multiple mechanisms of reflecting, scattering and absorbing ultraviolet rays, broadband protection is formed, the ultraviolet rays can be effectively blocked, the high-grade sunscreen requirement is met, the skin is protected from being damaged by the ultraviolet rays, the sulfonic-group-containing organic dye fixing agent, dye molecules and fibers form chemical bond combination, a stable color fixing network is constructed, and the appearance color and luster are kept lasting.

The invention discloses a fluorine-substituted pentamethine cyanine dye and a preparation method and application thereof, the fluorine-substituted pentamethine cyanine dye has a structure shown in a general formula I: # imgabs0 #, and by introducing fluorine atoms to an indole benzene ring and introducing different groups to an N site, accurate regulation and control of light stability of dye molecules are realized. The fluorine-substituted pentamethine cyanine dye prepared by the invention shows remarkable advantages in spectral characteristics, has a molar extinction coefficient higher than that of the traditional cyanine dye and has strong light energy absorption capacity, and is beneficial to improving the light energy utilization rate and reducing the dye dosage; the absolute fluorescence quantum yield reaches a high level, the intensity and sensitivity of imaging signals are remarkably enhanced, and a more sensitive and reliable tool is provided for biological imaging and molecular detection.

The invention discloses a high-specific-surface-area hexagonal boron nitride nanotube material with an adjustable microporous structure and a preparation method and application thereof.The preparation method of the hexagonal boron nitride nanotube material comprises the steps that urea and boric acid are dissolved in ethanol-water, stirring is continuously conducted in a water bath at 75-85 DEG C till a solvent is completely evaporated and dried, and the hexagonal boron nitride nanotube material is obtained; putting the powder into a graphite mold, heating to 950-1050 DEG C at a heating rate of 500-1200 DEG C / s under the protection of inert gas, keeping for 3-8 seconds, and naturally cooling to room temperature; and repeating the operation of thermal activation for 5-8 times to finally obtain the hexagonal boron nitride nanotube material. The h-BN-ts material prepared by a unique preparation process has the excellent properties that the specific surface area is greater than or equal to 1000 m < 2 > / g, the pore size distribution is less than 2 nm, and the pore volume is 0.4-1.5 cm < 3 > / g, and the technical problems of low adsorption efficiency and poor selectivity of a traditional adsorption material to oil, organic solvents and dye molecules are effectively solved.

The invention discloses a three-dimensional fluorescent nano printing method capable of being monitored in situ in real time, which comprises the following steps: (1) preparing a photoresist which comprises the following components: a two-step absorption photoinitiator, a small molecule polymerization monomer, aggregation-induced emission dye molecules and a photoresist auxiliary reagent; (2) a continuous laser beam acts on the photoresist through a three-dimensional scanning system, a double-step absorption photoinitiator generates an active factor through a double-step absorption process, a photopolymerization reaction of a small molecule polymerization monomer is initiated, and three-dimensional nano printing is achieved; in the photopolymerization region, the doped aggregation-induced emission dye molecules enable the printing structure to present strong fluorescence and the non-polymerization region to present weak fluorescence; and (3) rapidly scanning the three-dimensional nano printing area, obtaining the fluorescence intensity distribution of the three-dimensional nano printing structure in real time, and tracking and exploring the dynamic process and error correction of the three-dimensional nano printing. According to the invention, ultrahigh-precision fluorescent pattern three-dimensional nano printing and real-time in-situ detection can be realized.

The invention provides a series of cyanine or cyanine-like multifunctional probe molecules which are derivatives with a near-infrared cyanine dye molecular skeleton, and the skeleton is modified with any one or a combination of more than two of a protein affinity agent structure, a targeting group or a functional group; the near-infrared cyanine dye molecule is a near-infrared indole cyanine dye molecule or a near-infrared naphthopyrrole cyanine or flavonoid dye molecule; the structure of the protein affinity agent is from a 4 (p-iodophenyl) butyric acid derivative, Evans blue or a derivative thereof; the targeting group is a structure containing any one pharmaceutically acceptable targeting peptide; the functional group comes from any nuclide chelating agent or a functional drug molecule with a modification site. The multifunctional probe molecule provided by the invention can realize clear near-infrared first-region and second-region lymphatic imaging and angiography, and has good biological safety and adjustable circulation metabolism time at the same time. The invention also provides a method for preparing the multifunctional probe molecule and application of the multifunctional probe molecule in multi-mode diagnosis and treatment.

The present invention discloses an anthraquinone and anthracene compound meso-substituted cyanine dye, its preparation method, and application. The anthraquinone and anthracene compound meso-substituted cyanine dye is prepared by meso-substituting a heptamethine cyanine dye with an anthraquinone or anthracene compound. The substituent groups regulate the fluorescence emission and heat release pathways of the dye, enhancing the photothermal effect of the dye molecule and enabling photoacoustic imaging. Furthermore, its excellent biocompatibility and low cytotoxicity make it suitable for use in the biological and medical fields.

The invention discloses a preparation method of a chitosan modified polymeric dye and application of the chitosan modified polymeric dye in a temporary hair dye, and belongs to the technical field of polymeric dyes. The preparation method comprises the following steps: (a) dissolving dye containing monohydroxyl or monoamino in an organic solvent to obtain a solution A; (b) dissolving isocyanate in an organic solvent to obtain a solution B; dropwise adding the solution A into the solution B at the temperature of 20-80 DEG C, and reacting at the temperature of 20-80 DEG C to obtain a modified dye molecule solution C; (c) dissolving chitosan in a mixed solvent of water and ethanol to form a chitosan solution; and dropwise adding the modified dye molecular solution C into the chitosan solution, and reacting at 10-50 DEG C to obtain the chitosan modified macromolecular dye. The modified polymer dye has the characteristics of high safety, high stability, strong binding force with hair and the like, so that a temporary hair dye prepared from the modified polymer dye has a good dyeing effect.

The invention relates to the technical field of dye separation, and discloses a loose nanofiltration membrane and a preparation method and application thereof, the loose nanofiltration membrane comprises a porous support membrane, and a polyesteramide separation layer formed on the porous support membrane through one-step interfacial polymerization of nucleoside monomers and multi-acyl chloride monomers. The nucleoside monomer is one or more than two of adenosine, guanosine and cytidine nucleoside. The nucleoside monomer with a long-chain structure, a branched-chain structure, a rigid twisted structure and a plurality of hydrophilic reaction sites is selected as an interfacial polymerization water-phase monomer, so that the loose nanofiltration membrane is endowed with excellent permeation and separation performance. The membrane has a high rejection rate on dye molecules such as Congo red and methyl blue, also has high water permeability and extremely high dye / inorganic salt separation selectivity, and shows good application potential in the aspects of dye production and purification and dye wastewater recovery.

The invention relates to a cellulose fabric ozone water washing method. The method comprises the following steps: 1) feeding cloth and washing with cold water; 2) ozone water washing; 3) atomizing, spraying and washing; and 4) drying and discharging the cloth. According to the method, the strong oxidizing property of ozone is utilized, color development and auxochrome groups in unreacted dye molecules are efficiently destroyed, a better flooding removal effect is achieved, and the cleanliness and color fastness of the fabric are improved. Compared with a conventional water washing method, the water and electricity energy consumption can be greatly saved, and the use of chemical auxiliaries is remarkably reduced; and flooding dye molecules are degraded into colorless small molecules, so that the wastewater treatment difficulty is reduced, the treatment effect is improved, and remarkable environmental benefits are achieved.

The application discloses a structural color pressure-sensitive film based on a hollow polymer colloidal photonic crystal and a preparation method and application thereof, and belongs to the technical field of force-induced color-changing materials. The preparation method of the structural color pressure-sensitive film comprises the following steps: (1) uniformly dispersing core-shell nano colloidal particles in an organic solvent to obtain a colloidal particle dispersion liquid; the shell layer of the core-shell nano colloidal particles is a polymer material, and the core layer is an inorganic oxide; (2) coating the colloidal particle dispersion liquid on the surface of a flexible substrate, and obtaining a precursor photonic crystal film after heating; and after removing the core layer of the core-shell nano colloidal particles in the precursor photonic crystal film by acid treatment etching, the structural color pressure-sensitive film is obtained. The preparation method of the structural color pressure-sensitive film is simple, the conditions are mild, and no pigment dye molecules are needed; by utilizing the pressure deformation and shape memory characteristics of a single hollow polymer colloidal particle itself and the inherent structural color characteristics of a photonic crystal, the structural color pressure-sensitive film can realize the regulation and memory of rich and high-saturation structural colors under the action of pressure.

The invention provides a diketopyrrolopyrrole / cadmium quantum dot composite material as well as a preparation method and application thereof. The composite material comprises a composite material system formed by compounding diketopyrrolopyrrole derivative molecules and cadmium quantum dots. According to the invention, the rate and direction of fluorescence resonance energy transfer (FRET) between organic components and inorganic components in the composite material are simply and efficiently regulated and controlled by controlling the size of the quantum dots. The result of the embodiment shows that the composite material with the FRET rate of about 10 < 10 >-10 < 11 > s <-1 > can be obtained by adopting the method disclosed by the invention, and the energy transfer direction of FRET can be accurately regulated and controlled, so that energy transfer from ligand molecules to quantum dots or from quantum dots to ligand molecules is realized. The method is simple and convenient to operate and implement, and an inorganic-organic composite material system with broad-spectrum response can be constructed so as to realize efficient conversion and utilization of solar energy. In addition, the invention also provides a new thought for research and development in the fields of biological imaging, photoelectric devices and the like adopting a quantum dot-dye molecule composite material system.