319 results about "Ultraviolet absorption" patented technology

The invention relates to the technical field of organic material detection, in particular to an imine molecular sensor with a five-detection function, two-component gel as well as a preparation method and application of the imine molecular sensor. The imine molecular sensor has three signal responses of fluorescence on-off, ultraviolet absorption and color change to Fe < 3 + >, Co < 2 + > and Ni < 2 + > in a solution state, and has ultraviolet absorption and fluorescence on-off dual-detection performance to acid and alkali changes; the imine molecular sensor and cholesteryl half ester can form two-component gel through a heating-low-temperature ultrasonic cooling method; after Fe < 3 + >, Co < 2 + >, Ni < 2 + >, NaOH and HCl are respectively added, the orange of the gel becomes milky white, reddish brown, transparent red, milky white and milky white under sunlight, and the fluorescence of the orange of the gel disappears under an ultraviolet lamp, so that the rapid and sensitive detection of Fe < 3 + >, Co < 2 + >, Ni < 2 + >, acid and alkali under two states of the imine molecular solution and the gel is realized. The imine molecular sensor provided by the invention has the advantages of mild synthesis conditions, simple preparation and the like, and creates favorable conditions for popularization and application of the imine molecular sensor.

The invention provides a colorimetric / fluorescent dual-mode sensor, a preparation method of the colorimetric / fluorescent dual-mode sensor and application of the colorimetric / fluorescent dual-mode sensor in histamine detection. The colorimetric / fluorescent dual-mode sensor comprises a horseradish peroxidase-loaded metal organic framework (HRP-AIE-MOF), hydrogen peroxide and a chromogenic substrate o-phenylenediamine (OPD), horse radish peroxidase (HRP) in the HRP-coated AIE-MOF can oxidize colorless OPD into yellow 2, 3-diaminophenazine (DAP), an ultraviolet absorption peak is generated at 425 nm, a strong fluorescence emission peak is generated at 555 nm, the HRP-coated AIE-MOF has a strong fluorescence emission peak at 450 nm, and the HRP-coated AIE-MOF and a fluorescence signal of the DAP can form a ratio fluorescence sensor. According to the invention, the excellent catalytic ability of natural enzyme and the luminescence characteristic of AIE-MOF are integrated in one system, and high-sensitivity histamine detection is realized.

The invention provides a colorimetric / fluorescent dual-mode nano-enzyme sensor, a preparation method thereof and application of the colorimetric / fluorescent dual-mode nano-enzyme sensor in formaldehyde detection. The sensor comprises a metal organic framework nano-enzyme AIE-MOF coated PCN-222 loaded with an AIE-MOF material, hydrogen peroxide and a chromogenic substrate o-phenylenediamine OPD; the metal organic framework nano enzyme PCN-222 in the AIE-MOF-coated PCN-222 can oxidize colorless OPD into yellow 2, 3-diaminophenazine DAP, an ultraviolet absorption peak is generated at the position of 450 nm, a strong fluorescence emission peak is generated at the position of 560 nm, the AIE-MOF-coated PCN-222 has a strong fluorescence emission peak at the position of 446 nm, and the AIE-MOF-coated PCN-222 and a fluorescence signal of the DAP can form a ratio fluorescence sensor. According to the invention, the excellent catalytic ability of the nano-enzyme and the luminescence characteristic of AIE-MOF are integrated in one system, so that high-sensitivity formaldehyde detection is realized.

The invention relates to the field of glass, in particular to lithium-free alkali aluminosilicate glass as well as a preparation method and application thereof. According to the glass, SiO2, Al2O3, Na2O, K2O, MgO and ZrO2 serve as main components, the content of Li2O is lower than 100 ppm, a nitrate-sulfate-carbon powder composite clarifying agent is adopted, the number of bubbles and the content of residual sulfur are effectively reduced, and use of a toxic or ultraviolet absorption type clarifying agent is avoided. ZrO2 is obtained by calcining a zirconium-based metal-organic framework material and is good in dispersity, and the devitrification resistance is improved. During float forming, through micro-positive pressure, high-purity protective atmosphere and four-zone gradient temperature control, the tin penetration depth is controlled within 15 microns, and the surface tin content is smaller than or equal to 4 micrograms / cm < 2 >. The obtained glass has high light transmittance, high hardness and excellent chemical strengthening performance, and is suitable for the high-end fields of electronic display cover plates, vehicle-mounted screens, touch panels, photovoltaic substrates and the like.

The invention discloses an ultraviolet absorption gas analyzer, and relates to the technical field of gas analyzers. The ultraviolet absorption gas analyzer comprises an analyzer outer shell, the analyzer outer shell is connected with a first supporting seat and a second supporting seat, the first supporting seat is fixedly connected with a light source supporting seat, the light source supporting seat is provided with an ultraviolet light source generator, a rotating disc is rotatably connected between the first supporting seat and the light source supporting seat, and the rotating disc is provided with a rotating shaft. A plurality of groups of optical filter main bodies are arranged on the rotating disc, a measuring air chamber is arranged between the first supporting seat and the second supporting seat, and a light source receiver is arranged on the second supporting seat. According to the ultraviolet absorption gas analyzer, on one hand, protection is provided for the optical filter main body, the optical filter main body is isolated from the external environment, on the other hand, when the optical filter main body is replaced, the replacement of a plurality of groups of optical filter main bodies can be realized only by rotating the rotating disc, and the replacement process is convenient to operate, time-saving and labor-saving.

The invention relates to the technical field of coatings, in particular to a double-layer super-hydrophobic passive daytime radiation cooling coating and application thereof. The super-hydrophobic passive daytime radiation cooling coating is developed through a two-step spraying process. And the bottom layer is formed by combining a high refractive index TiO / Al2O3 composite material and modified polydimethylsiloxane. The top layer employs high band gap SiO to mitigate ultraviolet absorption and combines unmodified PDMS to ensure high thermal emissivity and low surface energy. By accurately controlling the particle size distribution and concentration gradient between the two layers of structures, the optimized SPDRC coating shows excellent optical performance, the solar reflectivity is 93.2%, and the mid-infrared thermal emissivity is 95.4%. Under the direct irradiation of the sun, the temperature reduction of 10 DEG C is obviously lower than that of the environment, and the radiation cooling power of 125 Wm <-2 > is realized. In addition, the coating has a water contact angle of 155 degrees, has strong super-hydrophobicity, can ensure excellent self-cleaning performance and long-term durability, and is suitable for actual outdoor application of building cooling.

The invention relates to the technical field of nano biosensing, in particular to a cerium-based metal organic framework loaded gold nano-cluster composite material as well as a preparation method and application thereof. A fluorescent and colorimetric dual-channel sensing platform is formed by compounding AuNCs and Ce-MOF and is used for detecting alpha-glucosidase and screening an alpha-glucosidase inhibitor, the cerium-based metal organic framework loaded gold nano-cluster composite material catalyzes and oxidizes a colorless substrate ABTS to generate colored oxABTS, and the oxABTS has characteristic ultraviolet absorption at 410 nm, so that the detection of alpha-glucosidase and screening of an alpha-glucosidase inhibitor can be realized. And the fluorescence of the cerium-based metal organic framework loaded gold nano-cluster composite material can be efficiently quenched through an inner filtering effect. Alpha-glucosidase catalyzes hydrolysis of a substrate AAG to generate AA, the AA can inhibit oxidation of ABTS regulated and controlled by a cerium-based metal organic framework loaded gold nano-cluster composite material, and then reduction of oxABTS ultraviolet absorption and fluorescence recovery of ACM are caused, so that dual-channel detection of alpha-GLU is realized through dual-signal output of colorimetric and fluorescence signals.

The invention provides a passive radiation refrigeration fabric as well as a preparation method and application thereof, and belongs to the technical field of automotive interior parts. According to the invention, the polymer of the pre-laid layer can provide good interface bonding force and has good sunlight refraction capability. The inorganic matter can provide good solar ray reflection performance, ultraviolet absorption capacity and thermal radiation performance and has good heat resistance and thermal stability, the resin can evenly disperse the inorganic matter, the structural stability of the cooling layer is guaranteed, and the reflection capacity and thermal radiation performance of the cooling layer can be further enhanced.

The invention relates to the field of water quality detection, in particular to a water quality sampling detection method and device applied to a small and micro wetland unit. The method comprises the following steps: determining a turbidity coefficient according to scattered light intensity of a target water sample under different wavelengths, absorbance of a target interval in an ultraviolet absorption spectrum and fluorescence intensity of a target area in a fluorescence spectrum; determining a scattering equivalent absorption value of each wavelength according to the scattered light intensity of the target water sample under each wavelength, the absorbance corresponding to each wavelength in the ultraviolet absorption spectrum and the turbidity coefficient; determining a real ultraviolet absorption signal of each wavelength according to the absorbance corresponding to each wavelength in the ultraviolet absorption spectrum and the scattering equivalent absorption value of the wavelength; correcting the fluorescence spectrum according to the turbidity coefficient and the scattering equivalent absorption value of each wavelength to obtain a corrected fluorescence spectrum; and detecting the water quality according to the corrected fluorescence spectrum and the real ultraviolet absorption signal of each wavelength. According to the invention, accurate water quality sampling detection can be provided.

The application discloses application of 2-amino isophthalic acid (2-AIA) as a MALDI matrix in characterization of oligosaccharide additives in food. The skeleton structure of 2-AIA has a strong ultraviolet absorption group and a protonation site, which is beneficial to laser energy transmission and desorption ionization process of the measured object. Meanwhile, 2-AIA has multiple polar functional groups, which can effectively enhance the directional combination of the hydroxyl group of 2-AIA and oligosaccharide, and improve the anti-interference ability of impurities in a complex system. In addition, 2-AIA and a traditional organic matrix alpha-cyano-4-hydroxycinnamic acid (CHCA) are combined as a binary matrix (CHCA / 2-AIA), which can play a synergistic role of the double matrix, significantly improve the detection sensitivity of oligosaccharide. On the other hand, the combination of CHCA and 2-AIA with different pH values can significantly improve the uniformity of the co-crystallization, and improve the accuracy and reproducibility of quantitative detection.

The application belongs to the field of pesticide residue detection, and particularly relates to a method for determining pesticides in water samples. The method comprises the following steps: amino modification is performed on MIL-100(Fe) to obtain an amino-functionalized MIL-100(Fe) material; and the pesticides in the water sample are analyzed and detected by using SALDI-TOF-MS with the amino-functionalized MIL-100(Fe) material as a substrate. The application forms a special MOF material by performing amino functionalization modification on MIL-100(Fe), which can enhance the interaction force between the substrate and the analyte, exhibits good ultraviolet absorption and energy transfer capacity, and thus improves the desorption / ionization efficiency in LDI detection. The method is used to detect pesticide residues, and in the low mass region, lower background noise and higher signal intensity are exhibited, so that the detection of pesticide substances in the small molecule region is greatly broken through, and the detection limit is greatly reduced.

The application discloses an anti-ultraviolet aging polycarbonate modified material and application thereof, and belongs to the technical field of polymer material modification. The material comprises synergistically modified polycarbonate, an organic small-molecule functional regulator, an antioxidant, a light stabilizer, a lubricating dispersant and an inorganic filler, wherein the synergistically modified polycarbonate is constructed into a multiple synergistic network by introducing a borate dynamic covalent structure, a Schiff base structure and a rare earth coordination structure, and the organic small-molecule functional regulator is p-hydroxybenzophenone. The preparation method comprises preparation of the synergistically modified polycarbonate and a subsequent melt blending and extrusion process. Through the technical scheme, the synergistic effect of ultraviolet absorption, energy transfer and free radical inhibition is realized, the yellowing degree of the material is significantly reduced, the mechanical property retention rate and the optical stability are improved, and the material is suitable for the fields of automobile transparent parts, outdoor optical materials and electronic and electrical shell.

The invention relates to the technical field of automobile glass surface treatment, in particular to heat management coated glass and a preparation method thereof, and the heat management coated glass is prepared by compounding two pieces of composite glass through an adhesive film; the composite glass sequentially comprises a glass substrate, an ultraviolet absorption functional layer and an infrared reflection functional layer, the preparation raw materials of the ultraviolet absorption functional layer at least comprise a SiO2 sol matrix and an inorganic ultraviolet absorbent; the preparation raw materials of the infrared reflection functional layer at least comprise tetraethoxysilane, acetylacetone, hydrochloric acid and antimony-doped tin oxide nanoparticles. The surface of the glass is coated with the optimized ultraviolet absorption functional layer and the infrared reflection functional layer, so that the barrier rate to ultraviolet (UV) of 99% or above and the reflectivity to infrared (IR) of 80-90% are achieved, and meanwhile, the glass has the characteristics of low cost and high weather resistance.

The present invention discloses a high-temperature and high-pressure temperature field measurement method based on low-resolution ultraviolet absorption tomography. The method comprises: selecting the electronic transition of NO or OH in the ultraviolet band as the absorption spectrum measurement object according to the temperature of the temperature field to be measured, and selecting the vibration spectrum band of the measurement object according to the concentration and size conditions of the temperature field to be measured to determine the wavelength range to be measured; selecting a broadband light source and a low-resolution spectrometer as the light source and detector required for the absorption spectrum measurement, respectively; establishing an optical path network for absorption tomography, wherein each optical path uses the selected broadband light source and low-resolution spectrometer, and the absorption spectrum of the measurement object is measured on all optical paths. The temperature of each spatial position is calculated from the absorption spectrum signals collected by each optical path, and the temperature field is reconstructed. The present invention can realize accurate temperature measurement by absorption spectrum under high-temperature and high-pressure conditions, and realize accurate measurement of high-temperature and high-pressure temperature fields by combining with a tomography reconstruction algorithm.

The invention belongs to the technical field of high polymer chemistry and material science, and particularly relates to application of a salicylaldehyde Schiff base chiral polymer in iron and copper ion detection, and the structural formula of the salicylaldehyde Schiff base chiral polymer is one of the following structures shown in the specification. . The salicylaldehyde Schiff base chiral polymer has high selectivity to copper ions and iron ions, and qualitative detection of the copper ions and the iron ions can be achieved according to changes of ultraviolet absorption spectrums, digital circular dichroism spectrums and fluorescence spectrums before and after coordination of the salicylaldehyde Schiff base chiral polymer with the copper ions and the iron ions.

The invention belongs to the technical field of metering, and particularly relates to a method for developing an L-phenylalanine solution standard substance based on a solid state national first-grade standard substance. On one hand, the fixed value is accurate and reliable, on the other hand, the uniformity and the stability of the L-phenylalanine solution standard substance are accurately and reliably analyzed, and on the other hand, the uncertainty of the L-phenylalanine solution standard substance is comprehensively evaluated; in addition, in the process of analyzing the uniformity and the stability of the L-phenylalanine solution standard substance, test parameters of an ultra-high performance liquid chromatography-ultraviolet absorption method are screened, and a method for analyzing the accuracy and the precision is established; therefore, the technical problem of lack of the L-phenylalanine solution standard substance in the prior art is solved.

The utility model discloses louver type dimming glass, which relates to the technical field of dimming glass and comprises a glass mounting frame, a dimming glass main body is mounted in the glass mounting frame, a fireproof layer and an elastic cushion are arranged on the inner wall of the glass mounting frame, and a sealing layer is connected between the elastic cushion and the dimming glass main body. The dimming glass body comprises a transparent conductive base material layer, the two sides of the transparent conductive base material layer are each provided with an adhesive clamping layer, the outer walls of the adhesive clamping layers on the two sides are provided with a first dimming film and a second dimming film respectively, and the outer sides of the first dimming film and the second dimming film are connected with an ultraviolet absorption adhesive film and an infrared absorption adhesive film through the adhesive clamping layers respectively. And an outer glass layer and an inner glass layer are respectively arranged on the outer sides of the ultraviolet absorption adhesive film and the infrared absorption adhesive film. According to the louver type dimming glass, various combined colors can be generated, the practicability of the louver type dimming glass is improved, the blocking effect of the louver type dimming glass on infrared light and ultraviolet light is improved, and meanwhile the situation that the dimming glass leaks light can be avoided.

The present application is applicable to the field of material technology, and provides a hollow nanocomposite material and its preparation method and application. The structural formula of the hollow nanocomposite material is Au NBPs@CuS, wherein CuS is an outer semiconductor and Au NBPs is an inner core. The present application is a nanostructure with a gold nanobipyramid as the inner core and a hollow p-type semiconductor as the outer layer, which realizes the first combination of p-type semiconductor and gold nanobipyramid. The tip effect of Au NBPs is better than that of previous Au NPs, and its ultraviolet absorption reaches a maximum at 808nm, and its phototherapy performance is greatly improved. By compounding Au NBPs with CuS, not only its photothermal performance is greatly improved, the photothermal conversion efficiency reaches 43.88%, and it can generate active oxygen under light. 1 O2 and ·OH, their excellent photothermal effect and photodynamic properties provide theoretical support for their application in inhibiting amyloid protein aggregation.

The application belongs to the field of inorganic semiconductor material synthesis, and particularly relates to a preparation method and application of large-size two-dimensional cadmium selenide nanosheet, wherein the preparation method is to select cadmium acetate and selenium powder as solutes, mix them uniformly with amine as a solvent, and then heat to controllably synthesize two-dimensional wurtzite cadmium selenide nanosheet with ultraviolet absorption peaks of 429 nm, 456 nm and 485 nm, 518 nm; the application avoids high-temperature and high-pressure operation by controlling reaction conditions, and obtains a convenient preparation method of cadmium selenide nanosheet by selecting suitable raw materials, thereby solving related problems existing in the synthesis of cadmium selenide nanosheet; the preparation method has low cost and wide application range, the prepared cadmium selenide nanosheet has excellent optical performance in addition to different thicknesses obtained by changing temperature and reaction time, and can be widely applied in the fields of biological sensing and photocatalysis.

The application discloses a sunscreen composition based on the ultraviolet absorption characteristics of yellow water of liquor, and a preparation method and application thereof. The sunscreen composition comprises 10-60 parts by weight of a yellow water extract of a strong-flavor liquor, 20-70 parts by weight of a yellow water extract of a Maotai-flavor liquor, and 0-40 parts by weight of a yellow water extract of a light-flavor liquor. It is found that the yellow water of different flavor liquors has characteristic ultraviolet absorption spectrum, wherein the yellow water of the strong-flavor liquor has strong absorption in the UVB band (290-320 nm), the yellow water of the Maotai-flavor liquor has strong absorption in the UVA band (340-380 nm), and the yellow water of the light-flavor liquor has relatively uniform absorption in a wide band. According to the spectral complementarity, the natural sunscreen composition is obtained. The sunscreen composition has an in-vitro SPF value of 15-35, a PA value of ++~++++, good light stability and low skin irritation.

The invention discloses a preparation method of a light response type UV regulation and control material and a 3A optical film, and relates to the technical field of optical films.The preparation method comprises the steps that spiropyrane is dissolved in ethyl acetate to form an oil phase, and first liquid is obtained; dispersing nano silicon dioxide in a water phase containing gelatin to obtain a second liquid; stirring and mixing the first liquid and the second liquid to form an emulsion; evaporating the emulsion at 55-65 DEG C for at least 12 hours to form a spiropyrane-silicon dioxide hybrid nanocapsule; the spiropyrane-silicon dioxide hybrid nanocapsule is dispersed into light-cured polyacrylate, and a light response type UV regulation and control material is obtained; the 3A optical film comprises a light response type UV regulation and control layer, and the material of the light response type UV regulation and control layer is a light response type UV regulation and control material. The 3A optical film realizes flexible regulation and control of absorption of ultraviolet rays according to different weather scenes.

The present disclosure provides an energy collection heat insulation composite film, a preparation method thereof, and heat insulation glass. The energy collection heat insulation composite film comprises a heat insulation layer, an infrared reflection film, a thermoelectric conversion layer, and an ultraviolet absorption film. The infrared reflection film is arranged on the heat insulation layer, the thermoelectric conversion layer is arranged on the side of the infrared reflection film away from the heat insulation layer, and the ultraviolet absorption film is arranged on the side of the thermoelectric conversion layer away from the infrared reflection film. The material of the infrared reflection film comprises a material capable of reflecting infrared rays. The material of the ultraviolet absorption film comprises a material capable of absorbing ultraviolet rays. The energy collection heat insulation composite film can not only consume heat to avoid long-term accumulation of heat in the energy collection heat insulation composite film, but also realize recycling of heat energy.

The present application discloses a method for detecting catecholamines, a detection probe, and a detection sensor. The detection method is to detect the fluorescence value of ferroferric oxide quantum dots at an excitation wavelength of 280 to 350 nm and / or the ultraviolet absorption value at a wavelength of 220 to 350 nm under the conditions of adding a buffer and a target analyte. The present technical solution has a fluorescence and ultraviolet dual signal detection mode, making the detection results more accurate and reliable. The present technical solution has the advantages of faster response speed, good selectivity, high sensitivity, and strong anti-interference ability. It has good application potential for detecting catecholamines in serum samples, and can semi-quantitatively and visually detect EP, NEP, and DA, and has great promotion and application value.

This invention discloses gold nanoparticle-modified metal oxide framework materials, their preparation methods, and applications, relating to the fields of material preparation and detection technology. The preparation method of the gold nanoparticle-modified metal oxide framework material includes: in-situ reduction of chloroauric acid on the surface of ZIF-67 via a reduction method to obtain an Au / ZIF-67 composite material; and calcination of the Au / ZIF-67 composite material using a programmed temperature rise process to obtain the final product. This invention also provides applications of this material in serum metabolite detection and in screening metabolic biomarkers for esophageal cancer diagnosis. The composite material prepared by this invention possesses a unique hollow porous structure and uniformly distributed gold nanoparticles, providing a large specific surface area for enriching metabolites in serum. It also enhances the ultraviolet absorption and photothermal conversion efficiency of the nanocomposite material, while improving the material's conductivity, thereby significantly improving laser desorption / ionization efficiency and achieving high-sensitivity detection.

The invention belongs to the technical field of organic matter detection, and particularly provides a chiral purity detection method of (S)-3-chloro-1, 2-propylene glycol, which comprises the following steps: S1, reacting (S)-3-chloro-1, 2-propylene glycol to be detected with a transforming agent to generate a derivative capable of absorbing ultraviolet rays; step S2, carrying out liquid chromatography detection on the derivative to obtain a liquid chromatogram; and S3, determining the chiral purity of the derivative based on the liquid chromatogram, and taking the chiral purity of the derivative as the chiral purity of the (S)-3-chloro-1, 2-propylene glycol to be detected. According to the chiral purity detection method of the (S)-3-chloro-1, 2-propylene glycol provided by the embodiment of the invention, the ultraviolet absorption group is derived and introduced into the (S)-3-chloro-1, 2-propylene glycol, so that the isomer can be detected and separated by using low-cost liquid chromatography, and the chiral purity of the (S)-3-chloro-1, 2-propylene glycol can be accurately determined on the basis.

The application discloses a kind of high weatherability polyvinyl chloride cable material and preparation method thereof, including the following weight parts of component: PVC resin 100 parts;Plasticizing system 35-55 parts;Dynamic crosslinking toughening compound 8-20 parts;Calcium-zinc stabilizer 4-8 parts;Ultraviolet light stabilizing system 0.3-1.5 parts;Flame-retardant-reinforcing synergic system 30-60 parts;Processing lubricating system 1-3 parts.The application constructs dynamic reversible ionic crosslinking network in PVC cable material for the first time, and simultaneously solves the two big problems of small molecule plasticizer migration and low temperature brittleness, unifies the inherent contradiction of cold resistance and anti-migration;Gradient refractive index core-shell toughening agent is designed and applied as "structured ultraviolet trap", and the ultraviolet absorption efficiency is greatly improved through physical optical mechanism, realizes the synergy of toughening and super long weather resistance, and does not depend on excessive carbon black, which provides design space for product color.

This application discloses a method for preparing and using a nucleic acid dye. The method comprises the following steps: preparing an intermediate compound I by reacting acridine orange and an alkynyl-containing compound; and mixing the intermediate compound I with a diazide compound to produce the nucleic acid dye. The nucleic acid dye prepared in this application has a short synthesis process and simple purification. The nucleic acid dye prepared in this application has good performance, as demonstrated by testing its optical properties, such as ultraviolet absorption and fluorescence, as well as by agarose gel electrophoresis.

This invention discloses a ratiometric nitric oxide-responsive near-infrared fluorescent molecular probe, its preparation method, and its application. The near-infrared fluorescent molecular probe has a nitric oxide-responsive mechanism, with an electron-donating group consisting of an oxanthracene group linked to two amino groups. When the probe molecule interacts with the analyte, the diaminophenyl group of the hemicyanine core undergoes cyclization to form a triazole-containing ring, thereby causing intramolecular charge transfer and resulting in a ratiometric change in its corresponding ultraviolet absorption and fluorescence emission spectra. The near-infrared fluorescent molecular probe of this invention exhibits a selective response to nitric oxide, effectively reducing background signal interference and can be applied to the accurate detection of NO.

The present application relates to a method of manufacturing a display apparatus, a guide film, a method of manufacturing a guide film, and an apparatus for manufacturing a display apparatus. The method of manufacturing a display apparatus includes preparing a display panel including a main display area, a first edge area, a second edge area, a third edge area, a fourth edge area, a driving chip, and a printed circuit film, and disposing the display panel on a guide film disposed on a forming pad. The guide film includes a main film portion overlapping the main display area, a first film portion, a second film portion, a third film portion, a fourth film portion, and a first ultraviolet absorption pattern attached to the fourth film portion.

The invention discloses an optical waveguide structure composite material based on SAN resin and a preparation method thereof. The raw material composition is as follows: 60-70 parts of SAN resin; 30 to 40 parts of PMMA (polymethyl methacrylate) resin; 0.1 to 1 part of modified nano CeO2; 1 to 5 parts of a maleic anhydride grafted SEBS compatilizer; and 0.1 to 1 part of an antioxidant. According to the material, through a double-effect anti-reflection mechanism of a synergistic effect, the light transmittance gt of a key ultraviolet band is remarkably improved; on one hand, the refractive index difference between the PMMA fibers which are continuously distributed in the axial direction and the SAN matrix is utilized to guide ultraviolet light to generate total internal reflection conduction at an interface, and the inherent strong ultraviolet absorption characteristic of the SAN matrix is effectively avoided; on the other hand, by means of the Rayleigh scattering effect generated by the CeO2 nanoparticles which are subjected to double surface modification and are uniformly dispersed, the transmission efficiency of ultraviolet light is selectively enhanced. According to the preparation method, a slit die head is adopted for extrusion preforming, and key processes of longitudinal hot stretching (inducing PMMA fibrosis) and water bath shock cooling (locking an optical waveguide microstructure) are combined, so that precise construction and large-scale preparation of an optical waveguide structure in the material are realized. The prepared composite material has high ultraviolet light transmittance, excellent mechanical properties and good chemical resistance, and has wide application prospects in the fields of micro-fluidic chips, electrophoresis plates, medical instruments and optoelectronic devices.