Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
56results about How to "Large absorption cross section" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Protective composite material and preparation method thereof
InactiveCN109177396ARealize the temperature adjustment functionFlame retardantSynthetic resin layered productsLaminationNuclear radiationElectromagnetic shielding
The invention provides a protective composite material, which comprises a protective layer, a functional layer and a comfort layer stacked in order; from the end of the protective layer, the functional layer includes a nuclear radiation shielding layer, an electromagnetic shielding functional layer and a textile substrate which are sequentially stacked, or, the functional layer includes the nuclear radiation shielding layer and the textile substrate which are sequentially stacked; and from a fabric substrate end, the comfort layer includes a neutron protective coating and a polypropylene high-molecular substrate which are sequentially stacked. The invention also provides a preparation method of the protective composite material. The protective composite material has multiple functions of flame retardation, static prevention, anti-ionization / electromagnetic radiation and neutron protection, and can be used for processing nuclear radiation protective clothing and protective tents, flexible protective screens and the like.
Owner:ZHEJIANG SAINTYEAR ELECTRONICS TECH
Neutron shield material with flame-retardant neutron shield heat-shielding performance and preparation method thereof
The invention discloses a neutron shield material with flame-retardant neutron shield heat-shielding performance and a preparation method thereof. The material is prepared from dimethylvinyl silica gel, a neutron absorber material, a flame-retardant functional filler, a heat-shielding functional filler, vulcanizing agent 2,5-dimethyl-2,5-dihexane and a powder surface modifier. The method comprises the steps of adding the dimethylvinyl silica gel and vulcanizing agent 2,5-dimethyl-2,5-dihexane in an open mill for plastication, then mixing the mixture and the neutron absorber material, the flame-retardant functional filler, the heat-shielding functional filler as well as the powder surface modifier, adding the mixed solution in a vacuum internal mixer for banburying, and finally adding a product obtained after the banburying into a press vulcanizer to obtain the neutron shield material with the flame-retardant neutron shield heat-shielding performance. The material has the thermal neutron shielding performance, and has good tenacity, flame-retardance, heat-shielding performance and mechanical strength, peripheral protection of nuclear instruments with complicated shaped can be met, and the material is also a good core material for neutron protection clothing.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Rare-earth nuclear-radiation-proof mortar and preparation method of rare-earth nuclear-radiation-proof mortar
InactiveCN105645865AGood nuclear radiation shielding performanceGood anti-nuclear radiationShieldingRare-earth elementLanthanum
The invention relates to rare-earth nuclear-radiation-proof mortar. The rare-earth nuclear-radiation-proof mortar is prepared from the following components in percentage by weight: 24 percent to 28 percent of cement, 40 percent to 60 percent of aggregate, 10 percent to 30 percent of rare earth and 0.8 percent to 2.0 percent of an additive, wherein the rare-earth aggregate contains oxides, oxalates, carbonates or complexes of rare-earth elements including lanthanum, gadolinium, samarium, europium, or dysprosium and the like. Compared with the prior art, the rare-earth nuclear-radiation-proof mortar provided by the invention has good mechanical property, waterproof property and construction property, and has a good shielding effect on gamma and neutron rays.
Owner:SHANGHAI NORMAL UNIVERSITY
Optical-fiber laser device
InactiveCN103915750AShorten the lengthInhibition of reabsorptionActive medium shape and constructionGratingAudio power amplifier
The invention discloses an optical-fiber laser device which includes pump devices, fiber bragg gratings, a gain optical fiber and a pump feedback device. Pump light sent by the pump devices is injected into the gain optical fiber through pump couplers. The fiber bragg gratings are used as endoscopes of the laser device and fusion welded at the two ends of the gain optical fiber. The gain optical fiber is shorter in length than an optical fiber needed for completely absorption of the injected pump light so as to ensure 10%-50% of residual pump light. The pump feedback device feeds back the residual pump light at the tail end of the gain optical fiber into a pump injection end and then the pump light is injected into the gain optical fiber again. The optical-fiber laser device uses a shorter gain optical fiber to reserve specific residual pump light so that re-absorption of signal light by the gain optical fiber in the laser device is inhibited effectively and generation of a nonlinear effect is inhibited effectively and under the same output power, the laser device has a larger nonlinear effect threshold than a conventional laser device so that the laser device is applicable to laser devices of a plurality of kinds of wavelengths and amplifiers.
Owner:TSINGHUA UNIV
Two-photon deep red emission fluorescent probe for imaging cell membranes in tissues based on molecular rotors
ActiveCN105566207ASmall molecular structureImprove photostabilityOrganic chemistryFluorescence/phosphorescenceIodideCytotoxicity
The invention discloses a two-photon deep red emission fluorescent probe for imaging cell membranes in tissues based on molecular rotors. The chemical name of the two-photon deep red emission fluorescent probe is N,N-di((4-(2(minute)-(4(second)-dodecyl)pyridine-4(second)iodide)ethylene)phenyl)phenylamine, and a chemical structural general formula is as shown in a formula (I). The invention also discloses application of the two-photon deep red emission fluorescent probe in marking or displaying cell membrane forms in the tissues and in living cells. A test verifies that the two-photon deep red emission fluorescent probe can be used for uniformly and continuously dyeing the cell membranes, bright two-photon deep red light can be emitted after the two-photon deep red emission fluorescent probe is bound to high-viscosity cell membranes because the two-photon deep red emission fluorescent probe is a rotor type molecule, the two-photon deep red emission fluorescent probe is indicated to have a very good prospect by being used as a cell membrane fluorescent probe, and the blank of a cell membrane probe in tissue imaging is hopefully to be filled; meanwhile, the two-photon deep red emission fluorescent probe has the characteristics that the application range is wide, the light stability is good, the cytotoxicity is low, and the cell membranes can be specifically imaged in the living cells.
Owner:SHANDONG UNIV
Solar battery module
InactiveCN102683467AImprove efficiencyQuick responsePhotovoltaic energy generationSemiconductor devicesHigh energyHigh energy photon
The invention provides a solar battery module comprising a solar battery cell, a wavelength conversion film, a glass layer and a rear panel, wherein the wavelength conversion film is manufactured on the solar battery cell; the glass layer is placed on the solar battery cell; and the rear panel is placed on the back face of the solar battery cell. The battery module utilizes the wavelength conversion film to change a solar spectrum so as to improve the efficiency of a solar battery. The wavelength conversion film is a rare-earth composite and has the function of converting high-energy photons including near-ultraviolet light, blue light and the like into one or more low-energy photons, such as green light, near-infrared photons and the like, so as to improve the efficiency of the solar battery. The absorption range of the wavelength conversion film is 200-500 nm and the emission range is 500-1100 nm. The thickness of the wavelength conversion film is in the range of 100 nanometers to 5 microns. The battery module also can utilize a DBR (Distributed Bragg Reflector) and / or an inversed-pyramid suede structure to reduce the reflectivity and improve the efficiency of the solar battery.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI +1
Quantum dot and plasma coupled color filter preparation method
The invention provides a preparation method of a metal quantum dot plasma coupler color filter. The preparation method comprises the steps that 1) metal nanoparticles (1) are prepared by utilizing a polyol method; 2) metal / SiO2 core / shell composite particles (3) coated by silicon dioxide shell layers (2) of different thicknesses are prepared; 3) amination of the surface of the metal / SiO2 core / shell composite particles is performed by utilizing 3-aminopropyltriethoxysilane; 4) oil phase red light quantum dots and green light quantum dots (4) are prepared by utilizing a high temperature thermal decomposition method and surface ligands are replaced by 3-mercaptopropionic acid; 5) the metal / SiO2 core / shell composite particles are connected with the quantum dots by utilizing a self-assembling method so that a metal quantum dot plasma coupler (5) is formed; 6) ethyl orthosilicate is catalyzed to be hydrolyzed by utilizing ammonia to prepare SiO2 sol; 7) the metal quantum dot plasma coupler is mixed with the SiO2 sol so that metal quantum dot plasma coupler dispersion liquid is formed; and 8) metal quantum dot plasma coupler dispersion liquid is enabled to form a pixel image by utilizing a spraying method.
Owner:SOUTHEAST UNIV
System and method for measuring oxygen concentration based on ultraviolet broadband secondary absorption spectrum
ActiveCN107044958ALarge absorption cross sectionImprove signal-to-noise ratioColor/spectral properties measurementsObservational errorGas concentration
The invention provides a system and method for measuring the oxygen concentration based on an ultraviolet broadband secondary absorption spectrum and relates to a gas concentration detection device and method. According to the device and the method, the problems of poor stability, big errors, difficulty in maintenance, high cost and low sensitivity when the oxygen concentration is determined by virtue of an oxygen sensor technique are solved. According to the method, the ultraviolet broadband light emitted by a deuterium lamp is aligned by a first lens and a first light filter piece and is emitted into a gas pool, the spectrum strength of parallel light is reduced due to the absorption of to-be-determined oxygen, and then transmission light is produced; the transmission light is converged by a second light filter piece and a second lens and is emitted into an entrance slit of a grating spectrometer, and the convergence light is converted into data signals by the grating spectrometer and is amplified by virtue of a photomultiplier tube; and the amplified data signals are subjected to data processing by virtue of a computer, and the concentration of to-be-determined oxygen is obtained. The system and the method have the beneficial effects that the determinacy is good, the measurement error is small, and the cost is low. The system and the method are applicable to the monitoring of oxygen and ambient atmosphere in industrial processes.
Owner:黑龙江省工研院资产经营管理有限公司
Photonic nanoantenna mediated gene circuit reconfiguration
InactiveUS20140342427A1Valid conversionLarge absorption cross sectionSpecial deliverySynthetic resin layered productsChemistryResonance wavelength
A selectively addressable optical biomolecular carrier and its method of use for reconfiguring gene circuits are described. One carrier is a plasmon resonant nanoantenna formed from a gold metal nanorod coated with a cationic phospholipid bilayer with an aspect ratio between 2.0 and 8.0 and plasmon resonance wavelength in the near infrared range. Biomolecules such as siRNA adhere to the carrier and are introduced into a cell. The biomolecules are released from the nanoantenna carriers with exposure to light at the plasmon resonance wavelength. The nanoantenna efficiently converts absorbed optical energy to surface localized heat releasing the biomolecules at a time determined by the user. The carrier can be used to modify gene circuits by allowing temporal control over the genes within a selected gene circuit through the optical release of interfering nucleotides. Optical silencing of endogenous genes with siRNA released from nanoantenna carriers was used to illustrate the methods.
Owner:RGT UNIV OF CALIFORNIA
Fluorene derivatives having multi-photon absorption characteristic, synthesis method and applications thereof
InactiveCN103130621AImprove stabilityLarge multiphoton absorption cross sectionNon-linear opticsEther preparationPhenyl-acetyleneSynthesis methods
The present invention provides fluorene derivatives having a multi-photon absorption characteristic, a preparation method and applications thereof. According to the preparation method, fluorene is adopted as a raw material, potassium hydroxide is adopted as a catalyst, oxidation is performed to prepare 9-fluorenone, a bromination reaction is adopted to link bromine to the fluorene ring, the obtained compound and phenylacetylene containing an ether group (-O-R) generate a fluorenone derivative under an effect of the catalyst, and the fluorenone derivative reacts with a Lawesson reagent to generate a series of fluorene derivative materials having a multi-photon absorption characteristic, wherein the method has characteristics of mild conditions, high reaction selectivity and low cost. The materials can be used in ultrafast laser amplitude stabilizers.
Owner:HENAN UNIVERSITY
Single quantum dot scanning near-field optical microprobe and system, detection device and method
ActiveCN110426535ASignificant changeImprove signal-to-noise ratioScanning probe microscopyFiberDielectric
The invention relates to the technical field of scanning probe imaging, and discloses a near-field probe and a probe system based on a single quantum dot as well as a detection device and a method based on the probe system. In a single quantum dot scanning near-field optical microprobe, the single quantum dot is loaded to the point of a dielectric needle through electrostatic force or a chemical adhesive as a probe, and the point of the dielectric needle is a conical fiber or an atomic force microscope probe. The near-field probe system can effectively overcome the defect that a traditional scanning near-field optical probe distorts optical properties of samples and is low in signal-to-noise ratio and low in repeatability; the imaging resolution of the single quantum dot near-field probe can reach the same magnitude of single quantum dot dimension, and is generally superior to 10 nanometer space resolution. The detection method is based on fluorescence intensity imaging and fluorescence lifetime imaging, and can sense the physical quantity information of multiple dimensions such as sample shape, material composition and optical near-field distribution.
Owner:HUAZHONG UNIV OF SCI & TECH
Combustible poison coating layer-containing coated fuel particle, pellet, fuel element, and preparation method of coated fuel particle
ActiveCN111724919AImprove economyImprove securityNuclear energy generationReactor fuel susbtancesBorideCarbide coating
The embodiment of the invention relates to the field of nuclear fuel, and concretely relates to a combustible poison coating layer-containing coated fuel particle, a pellet, a fuel element, and a preparation method of the coated fuel particle. The coated fuel particle provided by the embodiment of the invention comprises a ceramic fuel core, and a boron-containing combustible poison layer and a functional layer which sequentially coat the ceramic fuel core; and the functional layer comprises one or more of a loose layer, an inner transition layer, a carbide coating layer and an environmental protection layer. According to the coated fuel particle provided by the embodiment of the invention, the boride combustible poison layer can absorb neutrons and adjust reactivity, the coated fuel particle is suitable for power adjustment of different positions in a reactor core, and a boron material is relatively common, so the neutron economy and safety of the reactor are improved. In addition, the boride combustible poison can be prepared by a fluidized bed chemical vapor deposition method and is not easy to desorb; and continuous deposition preparation of each coating layer can be realized in a vertical fluidized bed, so that industrial mass production is facilitated.
Owner:TSINGHUA UNIV
Neutron back scattering imaging device for plastic mine detection
ActiveCN110333547AGood monochromaticityImprove radiation safetyMaterial analysis using wave/particle radiationNuclear radiation detectionNeutronAtomic physics
The invention discloses a neutron back scattering imaging device for plastic mine detection. The device comprises a position sensitive detector, a low energy neutron absorbing layer, a reflector, a shield, a stainless steel structure, a source strength monitoring detector, a neutron generator sealing component and a flexible high voltage cable. The position sensitive detector is located at the bottom end of the device, and the low energy neutron absorbing layer abuts against an upper surface and a side surface of the position sensitive detector; the neutron generator sealing component is located at the center of the device and is powered by the flexible high voltage cable; the reflector and the shield are sequentially wrapped at the outside of the neutron generator sealing component and are carried in the stainless steel structure; and the source strength monitoring detector is embedded from the top into the interior of the reflector. The device has two detection modes, that is, counting and imaging, fast early warning can be achieved in the counting mode, accurate identification of shape, size, embedding distribution, explosive content and other information of the mine can be achieved in the imaging mode, so that the false alarm rate of mine detection can be greatly reduced.
Owner:INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
Application of cyano-substituted stilbene type derivative of D-pi-A-pi-D structure as two-photon optical limiting material
InactiveCN107219704ALarge absorption cross sectionThe synthesis method is simpleNon-linear opticsQuantum yieldTwo-photon absorption
The invention discloses application of a cyano-substituted stilbene type derivative of a D-pi-A-pi-D structure and as a two-photon optical limiting material. The derivative is good in light and heat stability and low in fluorescent quantum yield, and has an obvious two-photon limiting property under laser irradiation of nanoseconds, picoseconds or femtoseconds in a near infrared waveband, and the two-photon absorption section can reach 1,000-2,200 GM. The cyano-substituted stilbene stilbene type derivative of the D-pi-A-pi-D structure as the two-photon optical limiting material has a wide application prospect in the field of two-photon optical limiting.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Multi-layer optical storage using pre-orientation in a glassmatrix
InactiveCN1662973AFix instabilityQualified functionRecord information storageNon-linear opticsStable statePolymer network
The invention relates to producing an optical memory which combines stability of written and non-written data with high writing speed and good sensitivity during writing, such an optical memory as well as a method of writing in such a memory. The optical memory has a liquid crystal (LC) layer with a first type of LC molecules (102) aligned in one direction, forming a polymer network, and a second type of LC molecules (104) oriented in a perpendicular direction, in which the orientation of said second type of LC molecules is meta-stable. By making use of a force, exerted on the second type of LC molecules (104), by the network of aligned crosslinked molecules, an increase in relaxation rate for the second type of molecules (104) from a meta-stable state of orientation, is achieved, which makes it possible to use said relaxation for writing data at an increased writing rate.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Phenothiazine double-photon photoacid initiator and preparation method thereof
InactiveCN101037422AThe synthesis method is simpleFew reaction stepsOrganic chemistryPhotosensitive materials for photomechanical apparatusPhotoacidPhotoinitiator
A dibenzothiazine two-photon acidic photoinitiator includes: having the dibenzothiazine as initial material, subsequently preparing the intermediate (I) N-alkyldibenzothiazine, (II) 3,7-bisformacyl-N-alkyldibenzothiazine and (III) 3,7-bis p-dialkylaminostyryl-N-alkyldibenzothiazine, finally synthesizing the target product by intermediate (III). The composition has a high stability and is a perfect two-photon acidic photoinitiator no matter being solution or film.
Owner:ANHUI UNIVERSITY
Preparation method of tio2-based nanocrystal up-conversion luminescent material with core-shell structure
InactiveCN102295929AEffective stimulationReduce absorption efficiencyLuminescent compositionsUpconversion luminescenceOrganic solvent
The invention relates to the technical field of up-conversion luminescent materials, in particular to a method for preparing up-conversion luminescent materials. First, a TiO2:Er-Yb nanocrystalline up-conversion luminescent material embedded in an amorphous matrix is prepared by a sol-gel method. , and then immerse the up-conversion luminescent material in a Mo(NO3)3 solution for chemical modification, and anneal at a temperature of 500-1000° C. to prepare a TiO2-based nanocrystal up-conversion luminescent material with a core-shell structure. On the one hand, the present invention uses the amorphous embedded in TiO2:Er-Yb nanocrystals to reduce the light scattering of TiO2:Er-Yb nanocrystals, and on the other hand, utilizes the shell formed by surface modification to reduce surface states to improve upconversion luminescence It not only has the advantages of simple operation, can greatly improve the luminous performance, obtain high luminous intensity and high brightness, but also has the advantages of high luminous efficiency, especially reduces the production cost and reduces the toxicity of organic solvents.
Owner:ZHEJIANG ORIENT CRYSTAL OPTICS
Bi-Nd-Yb co-doped YAG high-efficiency and wide-spectrum quantum cutting luminescent material
ActiveCN108192613AEfficient broad-spectrum conversion and utilizationHigh energyLuminescent compositionsHigh energyBroadband absorption
The invention provides a Bi-Nd-Yb co-doped YAG high-efficiency and wide-spectrum quantum cutting luminescent material. A composition general formula of the luminescent material is Y3Al5O12:xBi<3+>, yNd<3+>, zYb<3+>, wherein x is greater than or equal to 0.5*10<-2> and less than or equal to 1*10<-2>, y is greater than or equal to 0.5*10<-2> and less than or equal to 2*10<-2> and z is greater than or equal to 1*10<-2> and less than or equal to 10*10<-2>. According to the Bi-Nd-Yb co-doped YAG high-efficiency and wide-spectrum quantum cutting luminescent material provided by the invention, Nd<3+>-Yb<3+> co-doping belongs to two-step energy transmission and has relatively high energy conversion efficiency; Bi<3+> in the luminescent material can be used for effectively expanding an absorption section of Nd<3+> through a sensitization effect; sunlight is subjected to broadband absorption so that high-efficiency and wide-spectrum conversion type near-infrared quantum cutting is realized; finally, the sunlight is sufficiently utilized and the conversion efficiency of a crystalline silicon solar cell is improved.
Owner:HENAN UNIV OF SCI & TECH
Composite nanometer particle as well as preparation method and application thereof
ActiveCN108079299AUniform particle sizeEvenly dispersedPowder deliveryPhotodynamic therapyAdditive ingredientPyrene
The invention provides a composite nanometer particle as well as a preparation method and application thereof. The composite nanometer particle is prepared from the following ingredients including di-pyrene molecules, a photosensitizer, a phospholipid compound and a compound with oxygen carrying capability. The composite nanometer particle provided by the invention has the advantages that the particle diameter is uniform; the dispersion is uniform; the particle diameter is about 200nm; the particle diameter is adjustable; in addition, di-pyrene molecules and the photosensitizer are used for forming two-photon absorption materials. Compared with the photosensitizer in the prior art, the composite nanometer particle has the advantages that the absorption cross section is large; photon can bemore effectively absorbed; the deeper detection depth can be reached; meanwhile, the damage to the normal tissue is reduced; through the FRET (fluorescence resonance energy transfer) effect, the energy can be transferred to the photosensitizer; the cells can be more effectively killed and injured; higher application values are realized in the photodynamic treatment.
Owner:北京柏欧利诺生物科技有限公司
CsPbBr3 quantum dot-silicon based composite structure solar cell
InactiveCN109950330ALarge absorption cross sectionImprove light absorptionPhotovoltaic energy generationSemiconductor devicesFluorescenceWave response
The invention relates to a CsPbBr3 quantum dot-silicon based composite structure solar cell in the field of solar cells. The solar cell comprises a silicon-based solar cell and a CsPbBr3 quantum dot film coated on the surface of the silicon cell, and the thickness of the CsPbBr3 quantum dot film is 20-25nm. According to the CsPbBr3 quantum dot-silicon based composite structure solar cell, the CsPbBr3 quantum dot film is prepared in the surface of the silicon based solar cell in a spin coating method to form the CsPbBr3 quantum dot-silicon based composite structure solar cell, a fluorescence downward transfer layer is formed in the surface of the silicon based solar cell, compared with a traditional II-VI family compound quantum dot downward transfer material, the CsPbBr3 quantum dots havethe advantages of large absorption cross section and high absorptivity, the short wave response and photovoltaic characteristic of the cell can be enhanced by spin-coating a single film, adverse influence of increasing the serial connection resistance due to the fact that the downward transfer layer is too thick can be avoided, a film forming parameter is controllable, the surface reflectivity ofthe composite structure cell is reduced, short wave response is improved, long wave response is increased, the short-circuit current is increased, and the photovoltaic conversion efficiency of the cell is improved.
Owner:YANGZHOU UNIV
Triphenylamine derivative double-photon optical storage material and preparation method thereof
InactiveCN101037410ALarge absorption cross sectionLow bleaching thresholdOrganic chemistryTwo-photon absorptionOptical storage
Provided is a triphenylamine derivant two-photon light storage material which considers the triphenylamine as initial material, including firstly producing the intermediate tris(4-iodophenyl)amine, then synthesizing the target product. The material is a good two-photon light storage material which has a low two-photon blanch threshold, writes laser power of 8mw, attains blanch with a small exciting power, has a large two-photon absorption cross section.
Owner:ANHUI UNIVERSITY
Nano photosensitive material containing conjugated polymer and having two-photon imaging function and photodynamic curative efficacy as well as preparation and application
ActiveCN108421040AGood biocompatibilityLarge absorption cross sectionPowder deliveryPhotodynamic therapyWater solubleBiocompatibility Testing
The invention belongs to the technical field of antitumor drugs and discloses a nano photosensitive material containing conjugated polymer and having a two-photon imaging function and photodynamic curative efficacy as well as preparation and an application. The nano photosensitive material is water-soluble nanoparticles containing the conjugated polymer, a photosensitizer and a red light emittingcompound, the conjugated polymer is an energy donor material, and the photosensitizer and the red light emitting compound are energy receptor materials; shells of the nanoparticles are formed by a surfactant, and surfaces of the nanoparticles are modified with a modifier containing a functional group having a targeted recognition effect on tumor cells. The nano photosensitive material has good biocompatibility, can enter cells easily, has the efficient two-photon imaging function and two-photon photodynamic curative efficacy, can selectively bond with cancer cells and treat tumor with the photodynamic therapy adopting synchronous two-photon imaging and has high therapy efficiency and few side effects. The preparation method is simple, mild in synthesis condition and easy to implement.
Owner:SOUTH CHINA UNIV OF TECH
Yb<2+> excited nitric oxide green fluorescent material for white light LED (light emitting diode) and preparation method of fluorescent material
ActiveCN110003894ALow priceLarge absorption cross sectionEnergy efficient lightingLuminescent compositionsBroadband absorptionLight emission
The invention relates to the technical field of rare-earth light emitting materials and in particular discloses a Yb<2+> excited nitric oxide green fluorescent material for a white light LED (light emitting diode) and a preparation method of the fluorescent material. The fluorescent material has a chemical expression formula of Ca2-xSi3O2N4: xYb<2+>, and in the formula, x is greater than or equalto 0.01 and less than or equal to 0.06. The preparation method comprises the following steps: accurately weighing CaCO3, NH4H2PO4 and Yb2O3 according to a chemical mole ratio; obtaining a precursor Ca3-x(PO4)2: xYb<3+> through mixing, grinding, and high-temperature sintering; mixing and grinding the precursor with Si3N4, carrying out high-temperature sintering, and introducing an N2 / H2 mixed gas,thereby obtaining the fluorescent material. The fluorescent material provided by the invention has excellent light emission properties, has effective broadband absorption from an ultraviolet region toa blue light region, is matched with a chip of a commercial LED, and has an emission wave peak at 545nm. The fluorescent material is short in preparation cycle, simple in process procedure, low in equipment requirement, green and environmentally-friendly in synthesis process and beneficial to large-scale production.
Owner:NANCHANG UNIV
Dicyano-stilbene type two-photon fluorescent solvent chromogenic water-soluble probe and its synthesis method and application
ActiveCN108610270BImprove permeabilitySmall side effectsCarboxylic acid nitrile preparationOrganic compound preparationMicro imagingPhotochemistry
Owner:ZUNYI NORMAL COLLEGE
A kind of multifunctional epoxy resin-based radiation protection composite material and preparation method thereof
ActiveCN106317784BGuaranteed shielding effectImprove the protective effectShieldingEpoxyProcedure Agents
The invention provides a multifunctional epoxy resin radical radiation protective compound material and a preparation method of the multifunctional epoxy resin radical radiation protective compound material. The material is prepared by the following components, by weight, 20-100 parts of multifunctional epoxy resin, 5-200 parts of curing agent, 100-800 parts of anti-radiation functional additive, 5-100 parts of fiber reinforced material, 20-150 parts of anti-flaming functional filler, and 1-400 parts of processing agent. The compound material prepared by the invention has good shielding performance and flame retarding performance of neutron and gama rays; besides, the material can be used for a long time within the temperature scale of 180-250 DEG C, and has excellent temperature resistance, the average linear expansion coefficient is less than 30x10-6 DEG C; the material can guarantee the stability of the shielding performance of the neutron and gama rays. Meanwhile, the preparation method of the radiation protective compound material is simple and easy to operate, and can be applicable to the application demands at different places.
Owner:BEIJING RADIATION APPL RES CENT
Single quantum dot scanning near-field optical microprobe and system, detection device and method
ActiveCN110426535BSignificant changeImprove signal-to-noise ratioScanning probe microscopyDielectricOptical property
The invention relates to the technical field of scanning probe imaging, and discloses a near-field probe and a probe system based on a single quantum dot as well as a detection device and a method based on the probe system. In a single quantum dot scanning near-field optical microprobe, the single quantum dot is loaded to the point of a dielectric needle through electrostatic force or a chemical adhesive as a probe, and the point of the dielectric needle is a conical fiber or an atomic force microscope probe. The near-field probe system can effectively overcome the defect that a traditional scanning near-field optical probe distorts optical properties of samples and is low in signal-to-noise ratio and low in repeatability; the imaging resolution of the single quantum dot near-field probe can reach the same magnitude of single quantum dot dimension, and is generally superior to 10 nanometer space resolution. The detection method is based on fluorescence intensity imaging and fluorescence lifetime imaging, and can sense the physical quantity information of multiple dimensions such as sample shape, material composition and optical near-field distribution.
Owner:HUAZHONG UNIV OF SCI & TECH
Two-photon fluorescent sodium ion probe and its synthesis method and application
ActiveCN108456192BLarge absorption cross sectionSmall molecular sizeOrganic chemistryFluorescence/phosphorescenceMercuric ionIntracellular sodium
The invention belongs to the technical field of fine chemical engineering, particularly relates to a dual-photon fluorescence sodium ion probe and a synthesis method and application thereof. The probeis prepared by using distyrene dicyanide as the parent of the dual-photon fluorescence. The probe has small molecule volume and good selectivity to sodium ions. Oher ions other than sodium ions suchas zinc, potassium, calcium, magnesium, manganese, mercury and the like have no interference to the detection. The sodium ions of micro-molar concentration can be detected. The fluorescence intensityof the probe molecular is reduced after complexation with sodium ions, and the sodium ion content can be detected by double-photon fluorescence. The double-photon fluorescence microscopic imaging experiment shows that the probe has good permeability to cells or tissues such as fibroblast, has no toxic and side effect on the cells, is particularly suitable for detecting the concentration change ofsodium ions in the cell and the detection of the distribution of the mercury ions, and has great application value in the field of biology and medicine.
Owner:ZUNYI NORMAL COLLEGE
Application of dual-photon fluorescence probe
ActiveCN109946276AAvoid interferenceImprove accuracyOrganic chemistryFluorescence/phosphorescenceImage resolutionFluorescence
The invention relates to the technical field of the dual-photon fluorescence probe, and specifically relates to an application of the dual-photon fluorescence probe. The dual-photon fluorescence probeis applied to the cell and tissue imaging and used for detecting lipid raft content and distribution dynamic; the probe can improve the accuracy, precision, sensitivity and imaging resolution of thelipid raft detection, thereby providing a new thought for further preventing and controlling Alzheimer's disease and Prion Disease and like neurodegenerative diseases.
Owner:ZUNYI NORMAL COLLEGE
A eu-nd-yb co-doped strontium aluminate high-efficiency broadband quantum tailoring luminescent material
ActiveCN108192600BLarge absorption cross sectionTake advantage ofLuminescent compositionsSemiconductor devicesSolar lightBroadband absorption
Owner:HENAN UNIV OF SCI & TECH
Novel copper-based composite material and preparation method thereof
The invention relates to a novel copper-based composite material and a preparation method thereof, and belongs to the field of metal and composite materials thereof. The novel copper-based composite material comprises the following components in percentage by mass: 10-20% of B4C, 5-10% of hBN and the balance of copper. The preparation method comprises the steps that firstly, three kinds of powder including Cu powder, B4C powder and hBN powder are weighed and subjected to ball milling for 2-5 h according to a preset proportion, then a heat-resistant steel mold is filled with the mixed powder, then the mold is placed in a vacuum hot-pressing sintering furnace for hot-pressing sintering forming, after sintering is completed, the temperature is lowered to the room temperature along with the furnace, and the novel copper-based composite material is obtained. The technological process is simple and controllable, and the prepared novel copper-based composite material is excellent in comprehensive performance, can be used for harsh working conditions of dry friction, abrasion, corrosion and nuclear radiation interaction, and has very wide application prospects and popularization value.
Owner:HENAN UNIV OF SCI & TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com