320 results about "Dye molecule" patented technology

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 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 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 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.

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.

The invention discloses a bisazo blue reactive dye for high-temperature dip dyeing as well as a preparation method and application of the bisazo blue reactive dye. The reactive dye is shown in a structural general formula (I). A color body of the reactive dye is of a bisazo structure, the color body contains two naphthalene ring structures and a benzene ring structure, and an active group in a dye molecular structure is quaternary ammonium salt containing a nicotinic acid structure. According to the present invention, the binding force between the dye and the fiber can be improved through the coplanarity of the chromophore molecules, the dissociation between the dye and the fiber at the high temperature can be reduced, and the dye uptake of the dye at the high temperature can be improved, such that the fixation rate between the dye and the fiber can be improved; meanwhile, quaternary ammonium salt containing a nicotinic acid structure can react with fibers under the high-temperature neutral condition, an alkaline agent does not need to be added in the whole dyeing process, the problem of environmental pollution caused by the alkaline agent in the printing and dyeing wastewater is solved, and wide application prospects are achieved.

The invention relates to the field of dye chemistry, and discloses an acid dye with high color fastness, a preparation method of the acid dye and application of the acid dye in textile dyeing. According to the dye molecule, a 4-sulfo benzene ring and a 2, 5-dichlorobenzene ring are connected through an azo bridge (-N = N-), and a polysulfonate substituent group (-SO3Na) is introduced to a molecular skeleton to form a symmetric azo conjugated structure. The preparation method comprises the steps of nitration, reduction, sulfonation, diazotization, coupling and the like, the process conditions are mild, and the yield is stable. The obtained dye has a strong absorption peak in the range of 540-560nm, and the molar absorption coefficient epsilon is greater than or equal to 1.0 * 10 < 5 > L.mol <-1 >. Cm <-1 >. Compared with the conventional acid red dye, the dye has the advantages that the light fastness can reach grade 8, the fastness to washing is grade 7 or above, the color is bright, the color layer is uniform, the high dye-uptake can be realized under the low-salt condition, the conductivity of waste liquid is remarkably reduced, and the dye is suitable for dyeing protein fibers such as wool, nylon and silk.

The application belongs to the field of membrane separation technology, and provides a preparation method and application method of a two-dimensional MXene-conductive polymer layered separation membrane with adjustable pore size. The two-dimensional MXene-conductive polymer layered separation membrane is a two-dimensional MXene membrane prepared by vacuum-assisted filtration, and a conductive polymer monomer is embedded between the membrane layers, and then prepared by in-situ electrochemical polymerization. The advantages are that the preparation is simple and easy to operate, and no expensive equipment is needed. The conductive polymer in the membrane layer greatly improves the mechanical stability and oxidation resistance of the membrane structure, and the conductive performance and electrochemical capacitance characteristics are excellent. The membrane can be used as a desalination membrane and a conductive electrode at the same time, an electric potential can be applied to the membrane surface, the membrane pore size can be controlled by electrochemical regulation, and the selective separation of monovalent salt, divalent salt and dye molecules can be realized.

The invention discloses a viscosity-sensitive near-infrared two-region fluorescent probe, which can perform fluorescence imaging in a near-infrared II region, can lighten tumor tissues and distinguish normal tissues from tumor tissues based on viscosity response, and is used for in-vivo positioning of cancers. The invention further discloses a preparation method and application of the probe. The preparation method is easy to operate and mild in reaction condition. Compared with a clinical dye molecule ICG, the fluorescent probe disclosed by the invention has more excellent light stability and can be used for long-time in-vivo imaging of organisms. The emission wavelength of the fluorescent probe reaches an NIR-II region, so that the interference of a biological background fluorescent signal can be effectively reduced.

This invention discloses a molecularly switched adsorbent for adsorbing triphenylmethane dyes and its application, belonging to the field of wastewater treatment technology. The molecularly switched adsorbent proposed in this invention can rapidly remove triphenylmethane dyes such as crystal violet, malachite green, and methylene blue dyes from water; it can remove tens of ppm concentrations of crystal violet, malachite green, and methylene blue dyes from water in a very short time (90 min), with a removal rate of ≥92%. Moreover, this adsorbent can maintain a removal rate of ≥90% under a wide pH range (6-11) and high ion concentration conditions (1M). The activation and regeneration conditions of the adsorbent of this invention are mild; dye molecules can be removed by elution in a low-concentration alkaline solution only a few times. The adsorbent can be continuously recycled at least 10 times without significant attenuation of adsorption capacity.

The invention belongs to the crossing field of biomass utilization, environmental governance and energy, and relates to a preparation method and application of a lignin biochar adsorbent. Lignin is prepared by three different extraction methods, and six different lignin-based activated carbon (LAC) are prepared from the lignin and are used for adsorbing dyes in wastewater. The prepared LAC has a very good adsorption effect on dye molecules, the removal rate of MB and CR dyes reaches 100%, the MB adsorption capacity of DLC-CL-ZnCl2 at the temperature of 600 DEG C is 502.51 mg / g, and the CR adsorption capacity of DLC-CL-ZnCl2 at the temperature of 600 DEG C is 2073.14 mg / g; meanwhile, the prepared LAC has a high recycling rate, and after the LAC is recycled for 6 times, the LAC still keeps high adsorption performance.

The utility model belongs to the technical field of fluorescent dye detection, and particularly relates to fluorescent dye molecular synthesis detection equipment which comprises an equipment main body, a control panel is fixedly connected to the top of the equipment main body, U-shaped groove plates are fixedly connected to the two sides of the inner wall of the equipment main body, T-shaped plates are slidably connected to the inner walls of the U-shaped groove plates, and the T-shaped plates are fixedly connected to the top of the equipment main body. A placement cavity is formed in the top of the T-shaped plate, a handle is fixedly connected to the face, away from the equipment body, of the T-shaped plate, a molecule detector is fixedly connected to the top of the inner wall of the equipment body, and two telescopic devices are fixedly connected to the top of the inner wall of the equipment body. The fluorescent dye molecule synthesis detection equipment solves the problems that when the fluorescent dye molecule synthesis detection equipment is cleaned, fluorescent dye is attached to the inner wall of the placing cavity, so that the cleaning is not comprehensive, the next analysis results are inconsistent, and the accuracy of the detection result is influenced, so that the cleaning effect of the inner wall of the placing cavity is improved.

The invention relates to the technical field of color fixing agents, in particular to an efficient polyester color fixing agent and a preparation method and application thereof. The efficient polyester color fixing agent is prepared from the following components in percentage by weight: 20 to 40 percent of quaternary ammonium salt type cationic polymer, 5 to 15 percent of cross-linking agent, 2 to 8 percent of ultraviolet absorbent, 2 to 8 percent of penetrant, 0.5 to 3 percent of pH regulator and the balance of deionized water, the cross-linking agent is a polyfunctional group epoxy compound. According to the efficient polyester color fixing agent, the color fastness, especially the color fastness to washing and the color fastness to rubbing, of dyed polyester is remarkably improved through the electrostatic interaction of the cationic polymer and dye molecules and a three-dimensional network structure formed by the cross-linking agent, an ultraviolet light absorber is introduced into the cationic polymer through grafting reaction, and the color fastness to washing and the color fastness to rubbing are remarkably improved. The light fastness is obviously improved; tests show that the color fastness to washing can reach grade 4-5, the color fastness to rubbing can reach grade 4 or above in dry friction, and the color fastness to rubbing can reach grade 3-4 in wet friction.

The invention discloses a chinlon 6 filament based on high carboxyl modification and a preparation method thereof, and belongs to the technical field of chinlon production. The polyamide 6 filament based on high carboxyl modification is prepared by adopting PA6 slices with low-end amino groups and high-end carboxyl groups as raw materials, the ordered combining capacity of fibers and anionic dye is enhanced by reducing the content of the end amino groups and increasing the proportion of the end carboxyl groups, the dye is prevented from being accumulated on the surface, the dyeing uniformity and the dyeing permeability of the polyamide 6 filament are improved, and the dyeing quality of the polyamide 6 filament is improved. Meanwhile, the production parameter combination is precisely regulated and controlled, so that more microporous structures are reserved to adsorb the dye while the high viscosity of the high-carboxyl section is solved in the production process, and dye molecules are more easily diffused into the fiber; the prepared chinlon 6 filament based on high carboxyl modification realizes high-saturation and high-uniformity dyeing under low dye concentration, has ideal dye-uptake and fixation rate, and also has excellent dyeing effect on light-color sensitive colors, not only reduces the washing times after the chinlon filament is dyed, but also does not fade after being washed for multiple times.