1500 results about "Ultraviolet absorption" patented technology

An object of the present invention is to provide a metal oxide particle which exercises more excellent ultraviolet absorbency as a matter of course and combines therewith merits of, for example, either being shifted in ultraviolet absorption edge toward the longer wavelength side and being excellent also in the absorption efficiency of a long-wavelength range of ultraviolet rays, or having good transparency and, for example, even in cases where added into or coated onto substrates, not damaging the transparency or hue of the substrates. As a means of achieving this object, a metal oxide particle according to the present invention is a metal oxide particle such that a hetero-element is contained in a particle comprising an oxide of a specific metal element (M), wherein the metal oxide particle is: 1) a metal oxide particle in the form of a fine particle wherein the hetero-element is at least one specific metal element (M′); 2) a metal oxide particle wherein the hetero-element includes at least two specific metal elements (M′); 3) a metal oxide particle wherein: the hetero-element is a more specified metal element (M′) and at least a part thereof is 2 in valence; or the metal element (M) is a more specified metal element and the metal oxide particle is in a specific range in crystal grain diameter in the vertical direction to each of the (002) plane and the (100) plane; or 4) a metal oxide particle wherein: the hetero-element is at least one specific nonmetal element and an acyl group is contained in the particle; or the hetero-element includes at least two specific nonmetal elements; or the hetero-element is at least one specific nonmetal element and a component derived from a metal element (M′) other than the metal element (M) is contained in the particle.

A multilane motor vehicle exhaust remote measuring device comprises a vehicle road condition recognizing unit, a license plate recording unit, a vehicle velocity and acceleration measuring unit, a polluted gas monitoring unit by using infrared and ultraviolet absorption spectrometry and a control and data analysis / processing unit. The device can obtain the real-time condition of vehicle driving on one-way or two-way multilane pavement, accurately obtain various exhaust concentrations, velocity, acceleration and license plate number when only one vehicle drives on multiple lanes in a short time and complete preliminary exhaust analysis and license plate obtainment when a plurality of vehicles drive on multiple lanes simultaneously.

The invention relates to an anti-counterfeiting printing method by using invisible two-dimensional codes. The anti-counterfeiting printing method is characterized in that at least four printing layers for printing are adopted, and comprises the following steps of: firstly, providing a digital serial number and splitting the serial number into three fields of which information is assigned to three groups of two-dimensional codes; secondly, printing one group of two-dimensional codes on a first layer by using aqueous ink black materials; thirdly, overprinting a grey isolating layer on the first two-dimensional code layer by using infrared non-absorbent materials to form a second layer; fourthly, overprinting a second group of two-dimensional codes on the second layer of the grey isolating layer by using the infrared non-absorbent materials to form a third layer; and finally, overprinting a third group of two-dimensional codes on the third two-dimensional code layer by using ultraviolet absorption materials to form a fourth layer. The method has the advantages of eliminating the possibility of imitation by scanning the two-dimensional codes and achieving relatively higher use value because the overprinting is performed in the same area in an offset printing and digital jet printing way and the upper printing layer covers the lower layer naturally.

The invention discloses an ultraviolet fluorescence double-signal water quality monitoring device taking an LED (light emitting diode) as a light source and an application method of the device, and belongs to the field of environmental monitoring and water treatment. The ultraviolet fluorescence double-signal water quality monitoring device taking the LED as the light source consists of a sample collecting part and a detection part. The application method comprises the steps of selecting a deep ultraviolet LED lamp light source with specific wavelength and a photoelectric detector component according to a three-dimensional fluorescence atlas, detecting fluorescence intensity and ultraviolet absorption at the specific wavelength at the same time and calculating a ratio of the fluorescence intensity to the corresponding ultraviolet absorption. According to the device, no chemical reagent is consumed, monitoring of total concentration change of soluble organic matters in a water body can be realized, change of concentration of fluorescence ingredients such as proteins and humus can be reflected at the same time, and the sensitive, quick, efficient, economical, easy and information-rich on-line monitoring device is provided for the water treatment.

The invention relates to new type fluorine-containing copolyimide and a preparation method thereof. The fluorine-containing copolyimide is obtained by condensation copolymerization of three monomers, i.e. the fluorine-containing copolyimide is prepared by the steps of carrying out condensation copolymerization reaction on one type of alicyclic dianhydride monomer and two types of fluorine-containing aromatic diamine monomers, or two types of the alicyclic dianhydride monomers and one type of the fluorine-containing aromatic diamine monomer in an aprotic polar solvent at low temperature, and then carrying out a thermal imidization reaction, and the new type fluorine-containing copolyimide has the advantages of high transparency, good heat resistance and the like. A fluorine-containing copolyimide film has a glass transition temperature of 200 DEG C to 350 DEG C, and is colorless and transparent; the ultraviolet absorption cutoff wavelength is between 270nm and 340 nm; the light transmittance at 450 nm is between 88% and 98%; and the fluorine-containing copolyimide film has good processing performance, and can be used as a bottom plate of a solar cell, a liquid crystal display material, a flexible transparent conductive film substrate material, an electromagnetic shielding material and the like.

The invention belongs to the field of screen protection films of 3C (Computer, Communication and Consumer Electronics) products and in particular relates to a blue-proof hardening film. In order to overcome the defects of complex processes, high cost or low ultraviolet absorption rate of a current blue-proof protection film. The invention provides a blue-proof hardening film. The blue-proof hardening film comprises a base film; an ultraviolet-proof coating and a blue-proof hardening coating are sequentially arranged on one side of the base film. The blue-proof hardening film is simple in structure, high in hardness, excellent in adhesive force, high in transparency, capable of effectively absorbing blue light, facilitating the protection on the eyes of users, absorbing more than 99% of ultraviolet light and facilitating deceleration of the aging of the skins of the users, and widely applicable to the field of the screen protection films of the 3C products.

Clear or tinted window panes of glass or plastic having a pattern or dots, vertical lines, horizontal lines or a combination of vertical and horizontal lines in a regular pattern on a surface of the pane, the pattern being visible to the avian eye to prevent birds from striking or colliding with the window pane and having optical characteristics of ultraviolet reflection separated by ultraviolet absorption.

In a sealing method of a top-emission organic light emitting element, in the case of using a method of filling with a sealing agent between a substrate mounted with pixels and an opposed substrate, the organic light-emitting element is degraded by ultraviolet rays when irradiation of the ultraviolet rays is performed toward the pixels in order to achieve ultraviolet curing of the sealing agent filling on the pixels. It is an object of the present invention to propose a method for avoiding this phenomenon to provide an organic light-emitting device with superior stability. In order for a sealing agent 13 filling on a pixel portion 14 to have a larger absorbance to ultraviolet rays, an ultraviolet-absorbent material is dispersed in a sealing agent to make an adjustment so that the absorbance of ultraviolet absorption wavelength of 400 nm or less becomes 1 or more.

The present invention is to provide a display screen protection film that exhibits uniform in-plane ultraviolet absorption property, excellent mechanical strength, flexibility, heat resistance and optical property, and to provide a polarization plate wherein the display screen protection film is used as a polarization plate protection film. The display screen protection film obtained by stretching 1.2 to 6 times a film having a thickness of 20 to 300 μm wherein an acrylic resin layer (B1) containing no ultraviolet light absorbing agent is disposed on one surface of an acrylic resin layer (A) containing the ultraviolet light absorbing agent, and an acrylic resin layer (B2) containing no ultraviolet light absorbing agent is disposed on another surface thereof.

A polycarbonate system having enhanced weatherability is disclosed. The polycarbonate system comprises a substrate comprising a first surface and a second surface, a primer disposed on the first surface of the substrate, and a top coat disposed on the primer on the first surface for abrasion resistance. At least one of the primer and the top coat comprises an ultraviolet absorber in a solvent for ultraviolet absorption, the ultraviolet absorber having an extinction coefficient of ≧45,000 L-mol−1 cm−1 at λ=325 nm.

The invention discloses a PLA (polylactic acid) modified material, a preparation method thereof and a PLA biodegradable mulching film. The modified material contains the following raw materials in percentage by weight: 58-80wt% of PLA, 15-40wt% of PBAT (poly(butylene adipate-co-terephthalate)), 0.1-5wt% of modified talcum powder, 0.1-2wt% of antioxidant, 0.1-1wt% of ultraviolet absorption agent, 0.1-2wt% of light stabilizer, 0.1-2wt% of antiblocking agent, 0.1-1wt% of chain extender and 0.0005-0.05wt% of initiator. The PBAT is added into the PLA, and meanwhile the chain extender is used to compatibilize the polymer, so that the prepared material keeps the characteristics of high strength, high transmittancy and high cost performance of the PLA after blow molding and film forming, and meanwhile, the flexibility is enhanced.

A thermoplastic resin composition and a molded product, having excellent transparency, ultraviolet absorptivity and light resistance, are provided. A thermoplastic resin composition comprising from 0.001 to 10 wt %, based on the total resin composition, of a glass filler whose glass formulation consists mainly of a silicon oxide composition and exhibiting light transmittances at wavelengths of 340 nm and 400 nm of from 0 to 0.5% and from 30 to 99%, respectively, per mm of light path length. A molded product which is a molded product of a thermoplastic resin composition, characterized in that in a case where (1) an ultra-high pressure mercury lamp which does not substantially emit ultraviolet light having a wavelength of at most 250 nm, is used at such a distance that the intensity of ultraviolet light having a wavelength of 350 nm generated by the lamp would be 0.1 W / cm2 on the surface of the molded product, and (2) the molded product is irradiated for 72 hours in the air at the surface temperature thereof being 60° C., the light transmittance at a wavelength of 650 nm after the irradiation, is at least 70% per mm of light path length.

The invention provides a preparation method of a superhydrophobic ultraviolet resistant textile, which comprises the steps that: first, the surface of the textile is pre-treated; then a micro-particle in a core-shell structure with ultraviolet absorption action is loaded on the surface of the textile which is pre-treated so as to improve the surface roughness of the textile; and finally a low-surface energy substance is adopted to treat the textile which is loaded with the micro-particle in the core-shell structure. A contact angle between the textile which is prepared through the method and a water drop is more than 150 degrees, and the textile has stable superhydrophobic performance, and simultaneously has excellent ultraviolet protection performance.

The invention provides an inorganic nanoparticles-modified polyurethane sponge mask material and a preparation method thereof, and also provides application of the inorganic nanoparticles-modified polyurethane sponge mask material in manufacturing a mask. In the invention, the inorganic nanoparticles used for modifying sponge comprise magnetic Fe3O4 nanoparticles, magnetic Fe2O3 nanoparticles, TiO2 nanoparticles, ZnO nanoparticles, mesoporous SiO2, carbon nanotubes and carbon fibers. The inorganic nanoparticles have the advantages of small particle size, large specific surface area, strong adsorption performance and like and contain charges on the surfaces, and a plurality of the nanoparticles have strong ultraviolet absorption capability, photocatalytic activity, and antibacterial and antiviral actions. The inorganic nanoparticles-modified polyurethane sponge mask material provided by the invention has high efficiency and capability in filtering out sub-micron dust, viruses and bacteria, has the function of adsorbing poisonous and harmful gases, has the characteristics of small gas absorption resistance, simple preparation method, low cost and broad application future, and can be recycled through water washing.

The invention relates to a method and a system for monitoring total phosphorus and total nitrogen of water quality on line. The monitoring method comprises the following steps of: a, acquiring a water sample; b, performing ultraviolet digestion on the acquired water sample according to the principle of ultraviolet digestion and ultraviolet absorption methods; and c, discharging the digested water sample into a cuvette to perform ultraviolet absorption through ultraviolet light, and meanwhile calculating light intensity through a light sensitive sensor to obtain the concentration of pollutants. The detection system comprises a PLC, a CPU, a sample pretreatment device, a multi-way sampling valve, an injector, a reactor, a detector, a human-computer interface and a communication interface, wherein the sample pretreatment device, the injector, the reactor and the detector are connected to the multi-way sampling valve through pipelines respectively. The method and the system can efficiently, quickly, stably and accurately perform continuous detection, storage and forwarding on the concentrations of the total phosphorus and the total nitrogen, and have the advantages of high measurement precision, stable performance, high efficiency, small volume, light weight, convenient assembly and debugging, low cost, low energy consumption, independent use, long-term continuous work and the like.

The invention relates to a finishing method of rutile type nano titanium dioxide with ultraviolet absorption and self-cleaning performance for polyester-cotton fabric. An organic silane coupling agent (KH560) is utilized to carry out surface modification onto rutile type nano TiO2 through main two steps: (1), adding the rutile type nano titanium dioxide powder into alcohol to prepare alcohol liquor with mass concentration of 1%-5%, treating for a certain time by adopting ultrasonic or mechanical stirring or microwave-ultrasonic homogenizing, so that the nano titanium dioxide powder is uniformly dispersed in the alcohol; (2), adding a coupling agent which accounts for 1%-5% of the titanium dioxide into the alcohol liquor, regulating pH to neutral, stirring uniformly, reacting for 1 hour-3 hours at the constant temperature of 70 DEG C-90 DEG C to obtain the modified nano titanium dioxide finishing liquor. The modified nano TiO2 finishes the polyester-cotton fabric, the finished and dyed fabric is placed under an ultraviolet lamp with special ultraviolet wavelength for being irradiated for a certain time, and the finished fabric is measured to have uvioresistant and self-cleaning performances. The preparation method disclosed by the invention is simple and strong in operation practicability; the fabric can obtain the uvioresistant and self-cleaning performances at the same time; moreover, the nano titanium dioxide has protective effect for strength loss of the fabric.

The invention discloses a method for rapidly, accurately and repeatedly determining foot-and-mouth disease vaccine antigen 146S. A size exclusion high-efficiency liquid-phase chromatographic column in a molecular weight separation range of 2*10<4> to 1*10<7>Da is adopted to carry out the chromatographic separation on a detected sample on a high-efficiency liquid-phase chromatography. The operation pressure of the chromatography is 1.0MPa to 2.5MPa, the flow rate in the chromatographic column is 0.5 to 1.0 ml / min, a flow phase is phosphate buffer (pH 7.0 to 7.5) containing 0.1M sodium sulfate, and the column temperature is 15 to 25 DEG C. An ultraviolet and laser detector is used for detecting an optical signal of effluent at an outlet of the size exclusion high-efficiency liquid-phase chromatographic column, and a peak area of a sample can be analyzed by virtue of a computer software system of the high-efficiency liquid-phase chromatography. A standard curve of the absorption peak area and 146S concentration is established by virtue of a relation between the ultraviolet absorption peak and the concentration of different 146S standard products of different concentrations. Chromatograph is carried out on the detected sample through the size exclusion high-efficiency liquid-phase chromatographic column. The ultraviolet absorption peak area is measured, and the concentration of 146S in the detected sample can be acquired according to the standard curve.

An RTV long-acting anti-pollution flashover paint of nano intensive style used in the insulating surface outside the insulator of electric power appliances, and the method for producing it. The dispense comprises the following components (weight percent): nana SiO2 for 2-6 percent; hydroxy-terminated dimethyl silicone polymer for 20-40 percent; cross linker for 1-6 percent; catalyst for 0.02-1 percent; solvent for 30-70 percent; pigment for 1-2 percent. The producing steps as follows: mixed reacting hydroxy-terminated dimethyl silicone polymer and cross linker and catalyst; adding nano SiO2 into the autoclave for strring to 100-150 Deg.C, dewatering it in the condition of vaccum and loading it in the sealed metal drum; adding solvent and pigment to mix homogeneously, after a filtering treatment, placing it in an air-tight container. The coating by the invention is provided with fine thixotropic property, and the ability of ultraviolet absorption and infrared ray reflection, so the mechanical strength improved dramatically, the rate of hydrophobic mobility increased, and the property of anti-pollution flashover improved further.

The invention relates to a non-woven fabric, and a preparation method and application thereof. The preparation method comprises the following steps of using oxidized graphene as ultraviolet absorption packing; uniformly mixing the oxidized graphene and zinc oxide nano coating in water; coating two sides of a non-woven fabric by using the mixture; and drying and molding to obtain the non-woven fabric. Average transmittance of the non-woven fabric in a long-wave ultraviolet region is lower than 3%; the decrease amplitude of the transmittance of the non-woven fabric in a visible light region is smaller than the decrease amplitude of the transmittance of a pure non-woven fabric in the visible light region by 30%-50%; the non-woven fabric is good in anti-ultraviolet property, and is washable; properties of the non-woven fabric can still be maintained even if the non-woven fabric is violently stirred in water for 30 days; and moreover, the non-woven fabric has characteristics of good conductivity, anti-static property, light color and environmental protection, and can be used in fields of ultraviolet protective clothing, anti-ultraviolet screen windows, anti-ultraviolet tarpaulin and anti-static clothes.

The invention relates to a non-linear optical crystal-sodium beryllate borate, a growth method and application thereof. A chemical formula of the sodium beryllate borate is NaBeB3O6, the sodium beryllate borate belongs to an orthorhombic system, a space group is Pna21, cell parameters are that a is equal to 9.1531*, b is equal to 11.9337*, c is equal to 4.3724*, alpha is equal to beta, gamma and 90 DEG, and z is equal to 4, and the unit-cell volume is that V is equal to 477.60*<3>. The frequency multiplication coefficient of the sodium beryllate borate is 1.22 times of that of LiB3O5(LBO). The ultraviolet absorption edge of the sodium beryllate borate is shorter than 190nm. A solid-phase synthesis method is adopted for sintering at high temperature to obtain a NBB compound. A monocrystal can be successfully grown by using a molten salt method and taking Na2O-B2O3 or NaF-B2O3 as a fluxing agent. The NaBeB3O6 has non-linear optical effect, cannot be dissolved into dilute acid, has good chemical stability, can be widely applied in various non-linear optical fields, and can develop the non-linear optical application of deep ultraviolet wavebands.

The invention discloses a low-temperature-resistant ultra-toughness modified nylon alloy material and a preparation method thereof. The low-temperature-resistant ultra-toughness modified nylon alloy material is prepared from the following raw materials: PA (poly A) 66, PA6, a main flexibilizer, an auxiliary flexibilizer, a compatilizer, a main ultraviolet absorption agent, an auxiliary ultraviolet absorption agent, a main antioxidant, an auxiliary antioxidant and a lubricating agent. The preparation method comprises the following steps of: mixing the raw materials in a high mixing machine uniformly; putting the mixture into a dual-screw extrusion pelletizer for heating and fusing, vacuumizing, slicing and pelletizing; drying materials after pelletization in a vacuum box, so as to obtain the product granulate low-temperature-resistant ultra-toughness modified nylon alloy material provided by the invention. The product low-temperature-resistant ultra-toughness modified PA66 alloy material provided by the invention has high comprehensive performances and excellent temperature-resistant performance, achieves the advanced level of similar products abroad, can replace imported materials, and meets the high-quality requirement of the domestic market on the ultra-toughness PA66 alloy.

The invention provides a regenerated silicon material as well as a preparation method and application thereof. The regenerated silicon material is prepared from 40 to 70 weight percent of silicon dioxide and 30 to 60 weight percent of oxide selected from phosphorus, calcium and sodium, wherein the silicon dioxide forms a three-dimensional network structure; calcium ions and phosphorus ions are orderly distributed among three-dimensional reticular silicon atoms, wherein five-valence silicon atoms and / or six-valence silicon atoms account for 1 to 10 mol percent of all silicon atoms; the content of phosphorus oxide is 2 to 5 weight percent; in addition, in an NMR (Nuclear Magnetic Resonance) graph, an absorption peak exists at a position of 200 to 220ppm. The regenerated silicon material rich in five valence coordinate silicon and six valence coordinate silicon can be formed at lower temperature and normal pressure, and has unique structures and performances. Besides, high-coordinate silicon atoms in the regenerated silicon material can make an ultraviolet absorption peak generate red shift.

The invention discloses a bicyclo ring cage substituted sesquialter oxosilane and the method for preparing the same and its application. The compound possesses high sesquialter constructure, the core is cage sesquialter oxosilane, the eight apical angle are 1- oxo- 1- phosphora- 2, 6, 7- trioxa bicyclo [2, 2, 2]- 4- methylene sorbate. The method comprises: dissloving catalyst and solvent, adding bicyclo ring cage coordination silicon, reacting while stirring at room temperature; heating to 60- 70 Deg .C, stopping reaction, sucting, distilling part of solvent from filtering liquid and putting it in fridge for cooling, a large amount of crystal will be generated two days later, putting it at room temperature for 1 hour to make the ethandiol crystal disslove, sucting and drying the crystal at 60 Deg. C. The epoxide resin adjuvant is characterized by ability of increasing toughness, fire-retardancy, heat-proof quality, abradability, weatherability and anti ultraviolet absorption for epoxide resin, and hardening function.

The present invention provides an optical film, which is excellent in ultraviolet absorption capability at 380 nm with little bleed-out, comprising a resin containing a triazine compound represented by the following general formula (I). (In the formula, R1-R6 may be a hydrogen atom; hydroxyl group; or an organic group selected from among an alkyl group, alkoxy group, dialkyl amino group, alkyl carbonyloxy group, aryl group, arylated alkyl group, aryloxy group, arylated alkyloxy group and an aryl carbonyloxy group having 18 or less carbon atoms, independently. However, the alkyl part of these organic groups may be substituted by a hydroxyl group, halogen atom, cyano group or nitro group, interrupted by an oxygen atom, sulfur atom, carbonyl group, ester group, amide group or imino group, or have a double bond, and these substitutions, interruptions and double bonds may be combined).

An all natural topically applied broad spectrum photo-filtering composition for both styling of hair and protecting hair and scalp from ultraviolet radiation is comprised of natural oils, vitamins and amino acids having UV absorption properties which in combination with at least one inorganic particulate selected from the group consisting of titanium dioxide arid zinc oxide afford broad spectrum photo protection of both hair and scalp across the UV and IRA spectrum. Combining the above with bees wax, glycerin, gelatin and wafer, produces an emulsified gel suitable for styling hair while simultaneously protecting the hair and scalp from damaging UV and IR rays.

The invention discloses a transparent polyimide material. The transparent polyimide material is obtained by performing condensation polymerization on a 1,4-bi(3,4-dicarboxylic phenoxy)cyclohexane dianhydride monomer and a binary primary amine monomer. Because the dianhydride monomer is in an alicyclic structure, the formation of a charge transfer complex in polyimide molecules and between molecules can be effectively suppressed, and the transparent performance of the polymer is greatly improved; and meanwhile, according to the phthalic anhydride structures at two ends, the high reactivity of the dianhydride is kept. The glass transition temperature of the polyimide film is 200 to 300 DEG C, the ultraviolet absorption cutoff wavelength is 340 to 380nm, the light transmissivity at 450nm is 70 to 90 percent, and the transparent polyimide material has good application prospect in the fields of flexible substrate materials of solar cells, flexible transparent conductive film substrate materials, liquid crystal display materials and the like. The invention also discloses a dianhydride monomer which can be used for preparing the transparent polyimide resin material.

Alkali lignin is a main by-product of the papermaking industry of our country, and sever environmental pollution will be caused by direct discharge of alkali lignin. The invention discloses a preparation method of an industrial alkali lignin / polyvinyl alcohol cross-linked thin film, so as to increase utilization ratio of lignin, reduce environmental pollution and ease the resource crisis. The industrial alkali lignin / polyvinyl alcohol cross-linked thin film is prepared by following steps, industrial alkali lignin and polyvinyl alcohol (PVA) are taken as raw materials, and are crosslinked by a cross-linking agent; and then the mixture is subjected to tape casting so as to obtain the alkali lignin / polyvinyl alcohol cross-linked thin film. An optimized preparation technology is obtained based on mechanical properties. The mechanical properties of the industrial alkali lignin / polyvinyl alcohol cross-linked thin film are better than that of industrial polyvinyl alcohol films; absorption rate on ultraviolet light is about 100%; and transmittance is reduced to a certain degree. Blending compatibility of alkali lignin and PVA is excellent; the surfaces of alkali lignin and polyvinyl alcohol thin films, which are prepared by blending or crosslinking, are smooth; and phase separation is not caused. Thermal stability of the industrial alkali lignin / PVA cross-linked thin film is increased. The industrial alkali lignin / PVA cross-linked thin film can be used as an excellent ultraviolet absorption material, and it is possible to develop a novel specific packaging material or mulching film.

This invention relates to a method for preparing monodisperse non-agglomerated nanoscale ZnO with high UV absorbency. The method comprises: dissolving inorganic Zn salt and carbonate precipitant in a mixed solvent of absolute ethanol and deionized water, dropping the Zn salt solution into the precipitant solution under vigorous stirring to obtain precursor basic Zn precipitate, washing, filtering and drying, and calcining at 250-500 deg.C for 0.5-3.0 h to obtain monodisperse non-agglomerated ZnO nanopowder (10-50 nm). The mol. ratio of the inorganic Zn salt to the carbonate precipitant is 1 :( 1-2). The volume ratio of ethanol to water is (0.2-3):1. The ZnO crystals have a hexagonal structure and high UV absorbency.

The invention discloses a cysteine fluorescence probe adopting coumarin as a fluorophore. The cysteine fluorescence probe is 2-(3-acetyl) coumarin-based acrylate and has the chemical structural formula shown as a formula (I) described in the specification. The 2-(3-acetyl) coumarin-based acrylate disclosed by the invention can act with cysteine selectively, becomes light yellow from colorless, has a fluorescence enhancing effect, can be distinguished by the naked eyes, and also can be analyzed by ultraviolet absorption and fluorospectrophotometry. The cysteine fluorescence probe disclosed by the invention has the advantages that trace high-sensitivity detection to the cysteine can be realized and the application value is important.