197 results about "Photo stability" patented technology

The invention discloses a photoetching machine multi-light-source cooperative high-precision exposure control system, and relates to the technical field of photoetching machine control. Initial energy parameters of all light sources are obtained, a coupling feature set of energy change and light spot morphology change is constructed, and light intensity errors, phase errors and light spot distortion errors are used as input, so that a multi-light-source cooperative high-precision exposure control system is constructed; respectively generating an inter-light-source time sequence offset matrix and a light source energy compensation matrix, constructing a light source collaborative error model through matrix superposition and eigenvalue decomposition, inputting exposure disturbance obtained by real-time monitoring of a photoetching machine into the error model, and obtaining a primary compensation amount; a final target exposure compensation parameter is obtained by adopting a quadratic optimization algorithm under a constraint condition, and light source energy output, a light path phase and a pulse trigger time sequence are cooperatively adjusted according to the target exposure compensation parameter, so that energy deviation, phase drift and time sequence mismatch can be reduced at the same time, the exposure stability and the pattern forming precision are remarkably improved, and the image forming precision is improved. The method is suitable for high-resolution and multi-light-source photoetching equipment.

The utility model relates to a kind of vegetable hydroponic device with LED intelligent lighting system, relate to a kind of indoor planting vegetable hydroponic device, to solve the problem that light source in existing vegetable hydroponic device is difficult to realize dynamic spectrum regulation and poor light supplement stability.The growth box, seedling box and nutrient solution tank of the new type are sequentially arranged from top to bottom;Seedling box is used to cultivate seedling;Growth box is used to hold transplanted seedling;Nutrient solution tank is used to store nutrient solution;Illumination sensor is used to obtain the illumination of seedling, preset illumination threshold in main control unit, illumination sensing signal is compared with illumination threshold, and illumination instruction is generated according to comparison result;The illumination instruction output end of main control unit is connected with the illumination instruction input end of three-dimensional light supplement LED light source;Three-dimensional light supplement LED light source emits light according to illumination instruction, and irradiates growth box.Affirmative effect is to improve the light energy utilization rate when high crown layer vegetable is planted and improve the stability of light supplement.

The invention relates to the technical field of nano materials and biomedical engineering, and discloses a dye-sensitized rare earth up-conversion luminescent nano material as well as a preparation method and application thereof. The dye-sensitized rare earth up-conversion luminescent nano-material comprises a rare earth doped up-conversion nano-particle core, an unsaturated fatty acid salt self-assembled shell layer and a near-infrared dye modified on the surface of the rare earth doped up-conversion nano-particle. The unsaturated fatty acid salt coating layer endows the material with excellent water dispersibility through a hydrophilic group; a hydrophobic chain segment and an unsaturated double bond can effectively block water and oxygen permeation and quench singlet oxygen, so that the photobleaching half-life period of the material is increased by 86.7 times or more compared with that of a conventional coating material, and the light stability is excellent; the material successfully realizes efficient up-conversion luminescence under excitation of a low-power near-infrared light emitting diode (NIR LED, the power density of which can be as low as 100mW / cm < 2 >), and thoroughly gets rid of dependence on a high-cost and high-risk laser.

The present invention relates to the technical field of organic light-emitting materials, and provides a tetradentate cyclometalated platinum (II) complex based on an oxygen atom linkage and containing phenyl acridine and an application thereof. The tetradentate cyclometalated platinum (II) complex has the structure as represented by general formula (I). (I) The cyclometalated platinum (II) complex in the present invention adopts a tetradentate ligand, is high in rigidity, and can improve the light stability of a light-emitting material. At the same time, the complex molecule can strongly emit light, and therefore can be used as a light-emitting material in an OLED device.

The application is a divisional application of Chinese patent application No. 202011250638.2 entitled "Structure of steric hindrance adjustable weak base light stabilizer and preparation method and application thereof". The present application belongs to the field of new compounds and their synthesis methods, and specifically relates to a steric hindrance adjustable weak base light stabilizer and a preparation method and application thereof. The innovative light stabilizer of the present application adjusts the steric hindrance by establishing the size of the substituent group that produces steric hindrance around the nitrogen atom in the general structure. In addition, by adjusting the distance of the polar group, the electronegativity of the nitrogen atom can be affected, thereby adjusting its basicity or nucleophilic property. By adjusting the steric hindrance and nucleophilic property or basicity of the nitrogen atom in the environment, the desired effect is obtained, and the application range of the innovative light stabilizer is widened, so that it is widely applicable to PC, polyester, PU, PVC and other acidic or electrophilic polymer materials as a light stability protection aid.

Provided is a phenolic composition having enhanced biodegradability and / or photostability, said composition containing a phenol and at least one compound containing one or more atoms selected from among nitrogen, sulfur, and phosphorous.

The application discloses a kind of high solubility green phthalocyanine dyes for photoresist and a synthesis method thereof, the synthesis method comprises the following steps: (1) S N Ar reaction: under the action of catalyst, attack aromatic ring using carboxyl compound to carry out S N Ar reaction, and after treatment to obtain intermediate P1;(2) preparation of phthalocyanine dye: using intermediate P1 obtained in step (1), metal salt, high-boiling alcohol as raw material, and under the activation condition of catalyst, reaction, after treatment to obtain phthalocyanine P2. The application provides a new type of high solubility phthalocyanine dye molecule, which can be mixed with other colorants to configure green photoresist color paste, which has phthalocyanine as parent structure, improves dye solubility by introducing halogen atom, alkoxycarbonyl, etc., and has excellent thermal stability and light stability;At the same time, the synthesis method provided by the application is simple, easy to mass production, and can be used to improve the quality of LCD display.

The invention discloses a fluorescent pigment compound as well as a preparation method and application thereof. The chemical structural formula of the fluorescent pigment compound is shown in the specification. Wherein n is an integer from 2 to 6, and R1 and R2 are respectively and independently selected from C1-C3 alkyl groups. By introducing 4-tert-butylphenyl and tert-butylsilane ether chains, the compound has excellent solubility, film-forming property, high fluorescence quantum yield (gt, 95%) and light stability (retention rate gt, 90% after ultraviolet irradiation for 500 hours). The preparation method is simple, is suitable for a solution processing technology, and can be widely applied to the fields of OLEDs, light conversion adhesive films, fluorescence sensing, biological imaging and the like.

The application discloses a kind of near-infrared benzothiadiazole dye sensitized rare earth upconversion luminescence nano-probes and preparation method thereof;Probe is composed of near-infrared benzothiadiazole dye and upconversion nanoparticle, benzothiadiazole dye is compounded with ligand-free lanthanide ion doped upconversion nanoparticle, and upconversion luminescence is enhanced.This application preparation method is simple, and it does not involve complex core-shell structure and energy migration process, benzothiadiazole dye is directly compounded with ligand-free rare earth nanoparticle, and upconversion luminescence nano-probe is formed, under the irradiation of 808nm laser, the emission spectrum of benzothiadiazole dye and the absorption spectrum of sensitizer ion in upconversion nanoparticle overlap, which can effectively enhance the upconversion luminescence intensity of nano-probe, and keep good light stability, keep more than 90% of initial luminescence intensity under the irradiation of 120 minutes excitation light.

The application provides a g-C3N4 modified PC and a preparation method and application thereof, the modified PC comprises the following components in mass fraction: base PC resin 96-98%, flame retardant 0.05-0.2%, toughening agent 0.1-1.5%, antioxidant 0.05-0.15%, lubricant 0.1-0.5%, maleic anhydride grafted g-C3N4 nano material 0.01-1%, and toner 0.5-1%. The modified PC has excellent antibacterial and antifouling capacity, can effectively solve the appearance problems of existing PC materials, such as easy fouling, poor wear resistance and the like in electronic and electrical products and daily packaging material products, the toughness and strength of the material are improved, and in addition, the modified PC material has certain light stability.

This invention relates to a lysosome-targeting fluorescent dye based on the BODIPY structure and its synthesis method, belonging to the field of organic fluorescent dyes. The invention designs and synthesizes the lysosome-targeting fluorescent dye BDP. The dye molecule uses BODIPY as the parent structure, and a novel lysosome-targeting fluorescent dye molecule is synthesized by introducing diphenylphosphine salt and tert-butyloxycarbonyl groups. The synthetic route of this dye is simple, it possesses excellent photostability, and exhibits good resistance to interference from ions, amino acids, and viscosity. Furthermore, this dye demonstrates superior fluorescence performance in a variety of common solvents, with fluorescence quantum yields exceeding 0.70. Experimental results show that this fluorescent dye can precisely target lysosomes in living cells, demonstrating promising applications in the field of bioimaging.

The invention discloses a fluorescent probe based on an ESIPT principle and application of the fluorescent probe in detection of total iron, ferrous iron and ferric iron. The probe OHNH contains a phenolic hydroxyl group, generates strong fluorescence through ESIPT, and has the advantages of good light stability, high fluorescence quantum yield, good water solubility, difficult hydrolysis, simple synthesis and the like. Fe and OHNH can generate specific complexation, the ESIPT process is influenced, and fluorescence quenching is caused. Fe is easily oxidized into Fe under the heating condition of a drying oven, and then fluorescence quenching is also triggered. Based on the principle, high-selectivity and high-sensitivity detection of total iron, ferrous iron and ferric iron can be realized. The method is low in cost, easy and convenient to operate, high in specificity and high in accuracy, and visual detection can be achieved. Furthermore, the method can be used for valence state distinguishing and content determination of iron in complex matrixes such as medicines, foods and water bodies, and has important practical application value.

This invention discloses a dimerized triarylmethane compound for blue photoresist color paste and its synthesis method. The compound is a dimerized blue triarylmethane compound A, which is prepared by the following steps: (1) reacting reactant B with diacid chloride as an acylation reagent to obtain intermediate C; (2) removing the Boc group from intermediate C to obtain intermediate D; (3) cyclizing intermediate D with potassium thiocyanate and acyl chloride reagent to obtain intermediate E; (4) reacting intermediate E with 4,4-bis(diethylamino)benzophenone to obtain F; (5) salting intermediate F to obtain the target dimerized triarylmethane compound A. The dimerized triarylmethane compound of this invention has excellent color performance and is suitable for blue photoresist color paste. It can significantly improve the brightness, transparency, contrast and dispersibility of the color paste, while also possessing high hiding power, strong tinting strength and good thermal and light stability.

The application discloses a photolithography machine multi-light-source cooperative high-precision exposure control system and relates to the technical field of photolithography machine control. The initial energy parameters of each light source are acquired, a coupling characteristic set of energy variation and light spot appearance variation is constructed, light intensity error, phase error and light spot distortion error are taken as inputs, a time sequence offset matrix between the light sources and a light source energy compensation matrix are respectively generated, a light source cooperative error model is constructed through matrix superposition and eigenvalue decomposition, exposure disturbance obtained by real-time monitoring of the photolithography machine is input into the error model, the final target exposure compensation parameters are obtained by using a quadratic optimization algorithm under a constraint condition after the preliminary compensation amount is obtained, the light source energy output, the light path phase and the pulse trigger time sequence are cooperatively adjusted according to the target exposure compensation parameters, the energy deviation, the phase drift and the time sequence mismatch can be simultaneously reduced, the exposure stability and the pattern shaping precision are significantly improved, and the application is suitable for high-resolution and multi-light-source photolithography equipment.

The invention discloses a high-entropy blue-light perovskite light-emitting layer and a preparation method and application thereof, a quaternary ammonium salt compound is introduced to construct an organic high-entropy layer, the dynamic evolution behavior of the perovskite light-emitting layer can be effectively regulated and controlled, the phase purity and the structural stability of the perovskite light-emitting layer are remarkably optimized, and meanwhile, the carrier transport matching performance is improved; and finally, cooperative improvement of the luminous efficiency and the service life of the blue-light PeLED is realized. According to the method for preparing the high-entropy blue-light perovskite light-emitting diode, a mixed process of solution spin coating and thermal evaporation is adopted, complex equipment is not needed, precursor materials are commercially available, cost is low, repeatability is good, the high-entropy blue-light perovskite light-emitting layer can be directly integrated into a preparation process of an existing light-emitting device, process parameters do not need to be greatly adjusted, and the method is suitable for large-scale production. And finally, the stability, the efficiency and the cost of the blue-light PeLED are optimized comprehensively, and the blue-light PeLED has a wide application prospect.

The invention discloses a chlorinated liquid crystal compound, a liquid crystal composition and application thereof. The structural general formula of the disclosed liquid crystal compound is as shown in formula (I), wherein R represents one of alkyl and alkoxy with the carbon atom number of 1-9, or alkenyl and alkenyloxy with the carbon atom number of 2-9; x1-X4 are independently hydrogen or chlorine, and at least one of X1-X4 is chlorine; n = 0 or 1, m = 0 or 1, and n + m > = 1. The liquid crystal composition comprises a liquid crystal compound with a structure shown in a general formula I. The liquid crystal compound disclosed by the invention has the advantages of high birefringence, low loss and good low-temperature intermiscibility. The composition based on the liquid crystal compound provided by the invention has the advantages of low loss, high birefringence, good light stability, wide working temperature range and the like under mid-infrared and high-frequency conditions. The liquid crystal composition is suitable for manufacturing liquid crystal infrared optical elements and high-frequency assemblies. (I)

The present application relates to the technical field of lens mask, especially to a highway LED transparent lens mask and a preparation method thereof, which comprises the following components by weight: 80-90 parts of poly(methyl methacrylate)-b-poly(glycidyl methacrylate) block copolymer (PMMA-b-PGMA); 0.5-2.0 parts of nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots; 5-10 parts of random ethylene-methyl acrylate-glycidyl methacrylate terpolymer; 1-3 parts of photochromic spiropyran derivative modified silica nanoparticles; and 1-3 parts of hyperbranched fluorinated polyether. The high light transmittance is ensured, and the active sites are provided through the PGMA block, which is conducive to the uniform dispersion and chemical bonding of other functional components. The nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots are introduced to realize efficient ultraviolet blocking and light stability.

The invention relates to the field of fluorescent dyes, in particular to a near-infrared fluorescent dye for brain imaging as well as a preparation method and application of the near-infrared fluorescent dye. The near-infrared fluorescent dye for brain imaging has the advantages of novel structure, good biocompatibility, large Stokes shift, high light stability, high fluorescence signal-to-noise ratio and the like; the near-infrared fluorescent dye prepared by the invention is simple in preparation process, mild in reaction condition, short in synthesis path and beneficial to industrial production, and has a wide application prospect.

The invention belongs to the technical field of quantum dot materials, and particularly discloses a method for preparing a color conversion layer by compounding an ultraviolet absorbent and quantum dot ink and application, the color conversion layer is prepared from the quantum dot ink containing the ultraviolet absorbent or films are prepared from the quantum dot ink and the ultraviolet absorbent respectively, and the color conversion layer is prepared through superposition; the quantum dot printing ink containing the ultraviolet absorbent is obtained by adding the ultraviolet absorbent into the quantum dot printing ink composed of perovskite quantum dots CsPbX3 and an organic solvent according to the proportion of 0.01-5wt% and fully and uniformly mixing the quantum dot printing ink with the perovskite quantum dots CsPbX3 and the organic solvent. Functional molecules with ultraviolet absorption capability are compounded with quantum dot ink, so that the light stability and the heat stability of a system can be improved, ultraviolet light which is not converted by quantum dots is absorbed, and the safety and the reliability of the system are improved.

The invention discloses a fluorescent resin composition of a hybrid system and application of the fluorescent resin composition in 3D printing, an epoxy fluorescent monomer has excellent light stability and can be connected into resin molecules in an epoxy polymerization mode, the stability is greatly improved, and the service life of a material is prolonged. In addition, due to the characteristic absorption of the epoxy monomer on 355 nm ultraviolet light, scattering of exciting light can be effectively inhibited, and the printing precision is improved. The epoxy monomer can also be subjected to [2 + 2] cycloaddition reaction under the irradiation of 400 nm ultraviolet light, a four-membered ring structure is formed, an original conjugated system is changed, the photochromic function and the erasable property are achieved, no chemical consumption exists in the conversion process, and the service cycle is obviously prolonged.

This disclosure provides immunoassay reagent compositions with increased stability (when exposed to light). These compositions typically include dyes that prevent degradation of labels, such as fluorescent labels. Kits comprising these compositions, methods of use, and methods of manufacture are also provided.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores, including (2) compositions / materials / resistive layers comprising NLO chromophores, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores (e.g., methods of poling and / or drying, and the like), (3) uses of NLO chromophores in electro-optic devices (e.g., electro-optic modulators (EOMs)). NLO chromophores disclosed herein not only have large EO effect, but also have fast modulation speed. In addition, NLO chromophores disclosed herein have superior increased r33, photostability and thermal stability compared to other EO Materials. As a consequence, NLO chromophores herein are particularly suited for use as EO materials in connection with low power and small footprint devices, including devices used in data acquisition systems, analog I / O modules, field transmitters, lab and field instrumentation, servo drive control modules, direct current (DC) power supply, alternating current (AC), and / or electronic load.

This invention relates to an organic nanoparticle, its preparation method, and its application. The organic nanoparticle is 4SBZ-F NPs, 6SBZ-F NPs, 4STP-F NPs, or 6STP-F NPs. The organic nanoparticles of this invention exhibit excellent NIR-II fluorescence brightness, good biocompatibility, and significantly improved photostability compared to the commercial dye ICG. They can be efficiently enriched at tumor sites through enhanced penetration and retention effects. High signal-to-noise ratio and high-resolution NIR-II fluorescence imaging of mouse blood vessels, lymph nodes, and tumors can be achieved under low-power laser and short exposure time conditions.

The application discloses a kind of photonic nitric oxide donor with fluorescent self-reporting function and its preparation method and application, belong to the field of biomedical materials.The nitric oxide donor has the structure as shown in formula 1.The donor itself weak fluorescence, but in the presence of reduced glutathione (GSH), after irradiation by ultraviolet light (such as 405 nm), it can efficiently and controllably release nitric oxide (NO), and it is accompanied by strong fluorescence enhancement signal (fluorescence intensity can be increased by about 100 times), so as to realize the real-time, high-resolution fluorescence monitoring of NO release process and site.The donor has good light stability and biocompatibility.Experiments show that it can realize the light-controlled release and imaging of NO in living cells, and has application potential in the field of biomedical research and related drug development.

The present invention is entitled: Naphthalene diimide derivatives incorporating piperidine as cathode interface materials for organic solar cells. This invention relates to the field of materials science, specifically to a compound and its applications, preparation methods, organic solar cell cathode interface materials, and organic solar cells. The structure of the compound is as follows: [structure omitted for brevity]. Wherein, n is a natural number between 0 and 6, and X1 and X2 are independently selected from [selections omitted for brevity]. This compound can be used as a cathode interface material for organic solar cells, achieving high photoelectric conversion efficiency. By incorporating piperidine, the photostability of the material is improved, exhibiting stronger photostability compared to commonly used tertiary amine side chain naphthalene diimide derivatives. This compound can also be applied to devices such as organic light-emitting diodes and perovskite solar cells.

The present application belongs to the technical field of compound crystals, and specifically relates to a low-odor and high-stability ergothioneine crystal. An X-ray diffraction pattern, which is collected using Cu-Kα radiation and plotted against 2θ, of the ergothioneine crystal at least has characteristic peaks at 9.50±0.2º, 15.52±0.2º, 19.06±0.2º, 24.88±0.2º, 25.48±0.2º, 28.74±0.2º, 29.22±0.2º and 35.10±0.2º. The new crystal form of ergothioneine in the present application exhibits good light stability, good moisture absorption resistance, and also a high decomposition temperature.

The invention relates to the technical field of perovskite batteries, in particular to a passivation solution for a perovskite film layer interface, a passivation layer, a preparation method of the passivation layer and a battery. The invention provides a passivation solution for a perovskite film interface, the passivation solution comprises a passivator and a solvent, and the passivator comprises a nicotinic acid compound and / or an isonicotinic acid compound. The passivation solution acts on a perovskite film layer interface and can passivate perovskite defects, lone electron pairs of C = O on carboxyl interact with under-coordinated Pb < 2 + >, non-radiative recombination loss can be reduced, defect ion migration is inhibited, meanwhile, the passivation effect is improved through cooperation with different substituted functional groups on pyridine, the quality of a perovskite film layer is improved, and the perovskite film layer is prepared. The ultraviolet light stability of the cell is improved, and the photoelectric conversion efficiency is improved.

The invention discloses a photopolymerization composition of a series of aza-boron-fluorine dipyrrole derivatives, and belongs to the technical field of photocuring materials. In the composition, the aza-boron-fluorine dipyrrole derivative is used as a photosensitizer, has high molar extinction coefficient, excellent light stability and wide spectral response characteristic, and can realize efficient intersystem crossing and long triplet service life. After being compounded with tris (3-chloro-4-methylphenyl) hexyl tetrabutylammonium borate (NB), the acrylate monomer polymerization can be rapidly initiated under 365 nm ultraviolet light, the curing time is within 20 seconds, and the highest double bond conversion rate can reach 75%. Wherein the brominated aza-BODIPY derivative (ADP-Br) can also be efficiently polymerized under the irradiation of 620 nm red light, and the conversion rate of double bonds can be up to 50%. The photopolymerization system disclosed by the invention is high in initiation efficiency, high in curing speed and wide in application scene, and can be applied to the fields of photocureable coatings, adhesives, photoetching materials, 3D printing and the like.

This invention provides a class of short-wavelength light-converting materials based on benzoxazole, with the structure shown in Formula I, where R1 and R2 are each independently hydrogen atoms, C1-C18 straight-chain or branched alkyl groups; and R3 is an aryl group or a substituted aryl group. The short-wavelength light-converting material of this invention possesses advantages such as excellent short-wavelength ultraviolet light absorption, high luminous quantum efficiency, good photostability, low cost, and ease of mass production. When doped at a certain concentration into the encapsulating film of solar cells, it can efficiently absorb short-wavelength ultraviolet light to avoid UVID (ultraviolet-induced power degradation), and convert the absorbed short-wavelength ultraviolet light into long-wavelength ultraviolet or blue-violet light that can be efficiently utilized by solar cells, thereby increasing power generation. This is of great significance for improving the overall performance and economic benefits of photovoltaic modules.