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74 results about "Oleodaphnoic acid" patented technology
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Methods to minimize contact resistance
ActiveUS20070020798A1Reduce contact resistanceImprove conductivityMaterial nanotechnologySolid-state devicesDopantOrganic semiconductor
A method is disclosed for making a metal electrode which minimizes the contact resistance between it and an organic semiconductor. Acid-stabilized metal nanoparticles are deposited upon a substrate and annealed. This creates a metal electrode and releases acid. Upon deposition of semiconductor and subsequent annealing, the acid diffuses from the electrode into the semiconductor layer and acts as a dopant, minimizing the contact resistance. The use of oleic acid-stabilized silver nanoparticles is demonstrated.
Owner:XEROX CORP
Compound corrosion inhibitor for corrosion medium and preparation method thereof
The invention provides a compound corrosion inhibitor for a corrosion medium. The compound consists of the following components in percentage by mass: 10 to 75 percent of maleated maleic anhydride, 10 to 75 percent of oleamide corrosion inhibitor, 10 to 75 percent of sodium molybdate corrosion inhibitor, and 5 to 50 percent of benzotriazole (BTA) corrosion inhibitor. The compound corrosion inhibitor for the corrosion medium is particularly suitable for a neutral and alkaline corrosion medium, and can simultaneously and effectively inhibit the corrosion of carbon steel and copper alloy in the neutral and alkaline medium. The method for preparing the compound corrosion inhibitor is simple, and the synergy effect ensures that dosage of each corrosion inhibitor in the compound corrosion inhibitor is remarkably reduced compared with that of single use of the corrosion inhibitor, so that the production cost is lower; and the compound corrosion inhibitor is an environmentally friendly corrosion inhibitor, so that normal operation of the equipment cannot be influenced.
Owner:中国人民解放军防化指挥工程学院
Preparation method of cesium-lead halogen perovskite nanocrystalline film with high luminous efficiency
ActiveCN112080276AEffective size controlImprove luminous performanceMaterial nanotechnologyNanoopticsHalogenTriethoxysilane
The invention relates to a preparation method of a cesium-lead halogen perovskite nanocrystalline film with high luminous efficiency. The method comprises the steps of (1) uniformly mixing DMF, oleicacid and oleylamine to obtain a mixed solution; (2) sequentially adding CsX and PbY2 into the mixed solution, uniformly stirring, standing, and taking a supernatant to obtain a precursor solution; (3)uniformly mixing 3-aminopropyltriethoxysilane with DMF to obtain an APTES solution; (4) uniformly mixing the precursor solution and the APTES solution, and adding toluene to obtain a cesium-lead halogen perovskite quantum dot solution; and (5) sequentially cleaning and drying the thin film substrate, respectively putting the thin film substrate into the cesium-lead halogen perovskite quantum dotsolution, centrifuging in a centrifugal machine, pouring out the solution, taking out the substrate, and drying to obtain the cesium-lead halogen perovskite nanocrystalline film with high luminous efficiency. Compared with the prior art, the method has the advantages of simple manufacturing process, good stability, easiness in large-area preparation and the like.
Owner:SHANGHAI INST OF TECH
Upconversion fluorescence resonance energy transfer detection composition and detection method based on dopamine polymerization reaction regulation
ActiveCN107402198AShorten the energy transfer distanceRealize detectionFluorescence/phosphorescenceComplex systemQuenching
The invention discloses upconversion fluorescence resonance energy transfer detection composition and a detection method. An upconversion fluorescence nanomaterial without oleic acid ligand is adopted as a fluorescence donor in the method, the energy transfer distance between the fluorescence donor and a fluorescence receptor is effectively shortened, the quenching capacity is excellent, and the detection sensitivity can be effectively improved. Besides, the adopted upconversion fluorescence resonance energy transfer system can effectively avoid interference of background fluorescence in a complex biological system, can be used for detecting hydrogen peroxide or hydrogen peroxide generation system related substances, can also be used for further detecting hydrogen peroxide or hydrogen peroxide generation system related substances in serum or whole blood samples, has the advantages of being convenient to operate, good in anti-interference performance, rapid, sensitive, economical, practical and the like, can provide theoretical basis and technological support for real-time monitoring of hydrogen peroxide and glucose in complex systems and has certain clinical application potentials.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Carbon network supported zinc oxide nanocrystalline composite material and preparation method and application thereof
InactiveCN104183837AReliable methodEasy to implementMaterial nanotechnologyCell electrodesZno nanocrystalsZinc nitrate
The invention relates to a carbon network supported zinc oxide nanocrystalline composite material and a preparation method and application thereof. A zinc-containing precursor is synthesized by an internal reflux method and is subjected to carbonization treatment at different temperatures in an inert atmosphere. The preparation method comprises the following steps: dissolving zinc nitrate in a mixed solution of oleic acid and oleylamine, and introducing the mixed solution into an inert atmosphere; removing residual moisture in the reactants and air in a system, raising the temperature of the system, and washing and drying a product, thereby obtaining the zinc-containing precursor; performing carbonization treatment in the inert atmosphere, thereby obtaining the carbon skeleton coated zinc oxide nanocrystalline composite material. According to the invention, a surfactant serves as a carbon source, a high-stability carbon network structure is obtained through carbonization, and zinc oxide nanocrystalline particles are uniformly inlaid in the carbon network. The method is easy to operate, is easily controlled and implemented in process and has an environment-friendly effect. The prepared ZnO / C composite material successfully overcomes the defect that zinc oxide is poor in cycle performance in the aspect of lithium ion battery application and has good application prospects.
Owner:ZHEJIANG UNIV
Method for improving stability of all-inorganic perovskite quantum dots CsPbBr3
ActiveCN111004629AImprove stabilityExcellent charge transport propertiesNanoopticsLuminescent compositionsPolypyrroleOleylamine
The invention discloses a method for improving the stability of all-inorganic perovskite quantum dots CsPbBr3. The method comprises the following steps: mixing PbBr2 and octadecene to obtain a solution I; adding oleylamine and oleic acid to obtain a solution II; heating, adding a cesium precursor solution into the solution II, cooling with an ice-water bath, centrifuging, precipitating, and dispersing quantum dots into the organic solvent to obtain a CsPbBr3 quantum dot solution; adding pyrrole and benzoquinone into the CsPbBr3 quantum dot solution, and adding chloroform to obtain a reaction system; and carrying out illumination by using a xenon lamp as a light source, carrying out centrifugation, and carrying out vacuum drying. According to the preparation method, the surface of CsPbBr3 quantum dots is coated with a polypyrrole protection layer, so that the stability of the CsPbBr3 quantum dot in water is greatly improved, wherein polypyrrole has excellent charge transmission characteristics, can improve the conductivity of the material, and can be applied to photoelectric materials of high-performance devices.
Owner:SHANGHAI INST OF TECH
Percutaneous contraceptive drugs delivery system and method
ActiveCN1633995AImprove skin penetration rateHigh hormone contentOrganic active ingredientsMedical devicesDiethylene glycolDelivery system
The invention provides a percutaneous contraceptive drugs delivery system and method, wherein the delivery system (TCDS) comprises a back lining layer, a viscous polymeric medicine storage layer adhered on the back lining layer, a strippable protective layer adhered on the viscous polymeric medicine storage layer, the viscous polymeric medicine storage layer comprises skin permeable accelerant composition, humectant, viscous polymer, active dosage of one or more steroid hormones, wherein the skin permeable accelerant composition is a mixture of dimethyl sulphoxide, 2-hydroxypropanoic aliphatic alcohol ester, diethylene glycol alkyl ether and oleinic acid by the initial weight ratio of 2 : 1 : 1 : 0.8 to 5 : 1 : 1 : 0.8. The invention can substantially improve steroid hormone transdermal speed and increase TCDS effectiveness and convenience.
Owner:RUNBIO BIOTECH CO LTD
Method for increasing manganese doping concentration and light emission efficiency of manganese-doped CsPbCl3 nanocrystal
ActiveCN110218561AImprove luminous efficiencyIncrease the doping concentrationMaterial nanotechnologyNanoopticsTrioctylphosphineCrystallinity
The invention relates to the technical field of CsPbCl3 nanocrystal material preparation and in particular to a method for increasing the manganese doping concentration and the light emission efficiency of a manganese-doped CsPbCl3 nanocrystal. The method comprises the following steps: preparing a caesium precursor solution; mixing octadecene, oleic acid, oleylamine, tri-n-octylphosphine, lead chloride, lead chloride, manganese chloride and nickel chloride; and forming a Ni-Mn double-doped CsPbCl3 nanocrystal, so as to obtain a Ni-Mn double-doped CsPbCl3 nanocrystal solution. By adopting the method, by adding NiCl2, the crystallinity and the surface defect state of a Mn-doped CsPbCl3 nanocrystal can be improved, the doping concentration of Mn in the manganese-doped CsPbCl3 nanocrystal canbe increased, and the light emission efficiency of the manganese-doped CsPbCl3 nanocrystal can be improved.
Owner:JILIN NORMAL UNIV
Preparation method of quantum dot/zinc oxide core shell structure and semiconductor device of quantum dot/zinc oxide core shell structure
InactiveCN108376750AImprove quantum efficiencyImprove efficiencySolid-state devicesSemiconductor/solid-state device manufacturingFluorescenceDissolution
The invention relates to the quantum dot synthesis field and particularly relates to a preparation method of the quantum dot / zinc oxide core shell structure and a semiconductor device of the quantum dot / zinc oxide core shell structure. The method comprises steps that S1, the zinc precursor is dissolved in oleic acid and oleylamine to obtain the zinc oleate precursor mixture; S2, quantum dots are added to the zinc oleate precursor mixture of the S1 step, NaHCO3 is further added, and reaction under the 180-270 DEG C for 1 hour is further carried out; and S3, repeated dissolution in toluene and absolute ethanol, deposition and centrifugation are carried out, and the quantum dot / zinc oxide core shell structure is acquired. The method is advantaged in that through the quantum dot / zinc oxide core shell structure, quantum efficiency of QLED devices and photobleaching resistance can be enhanced, fluorescence emission flickering at the single particle level is reduced, for quantum dot electroluminescent devices, 1), high-efficiency charge injection, 2), high light emitting brightness, 3), a low driving voltage and 4) high device efficiency can be realized.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA +1
Melamine dual-mode sensor based on Au-Fe3O4 composite nanoparticles and preparation method thereof
InactiveCN104764706AImplementing Dual Mode DetectionChange in relaxation rateColor/spectral properties measurementsMaterial magnetic variablesNMR - Nuclear magnetic resonanceInterference resistance
The invention relates to a melamine dual-mode sensor based on Au-Fe3O4 composite nanoparticles and a preparation method thereof. The invention relates to the field of nuclear magnetic resonance sensing. First, oleylamine oleic acid on the surfaces of the Au-Fe3O4 composite nanoparticles is stripped through NOBF4; and a specific receptor unit modifies the surfaces of the composite nanoparticles stripped by NOBF4 under the strong coordination effect of an Au-S bond, thus obtaining target composite nanoparticles which can be used for preparing the melamine dual-mode sensor. Compared with prior art, the dual-mode sensor provided by the invention has the advantages that in the presence of melamine, dispersed-state nanoparticles are induced to aggregate so that the transverse relaxation time of water protons around the nanoparticles and the ultraviolet absorption spectrum of the nanoparticles are changed. According to the sensor, melamine is detected with both an ultraviolet absorption spectrum method and a nuclear magnetic resonance method; therefore, the sensor has the advantages of wide application range, high selectivity and high interference resistance. A method is provided for realizing fast application under different actual situations.
Owner:SHANGHAI NORMAL UNIVERSITY
Organic-inorganic composite erbium doping flat optical waveguide amplifier and preparing method thereof
InactiveCN101364702AAvoid difficultiesSimple designPhotomechanical apparatusOriginals for photomechanical treatmentHigh volume manufacturingWaveguide amplifier
The invention relates to a strip-shaped optical waveguide amplifier by adopting a novel organic polymer material as an optical waveguide envelope, and adopting an organic-inorganic hybrid material doped with LaF3: Er, Yb nano-particles which are modified by an oleic acid surface as a sandwich layer, as well as the preparation method thereof. The optical waveguide amplifier is composed of a silicon substrate, a lower envelope, the sandwich layer and an upper envelope, wherein the lower envelope and the upper envelope adopt the novel organic polymer material; the sandwich layer adopts the organic-inorganic hybrid material doped with the LaF3:Er, Yb nano-particles which are modified by the oleic acid surface; the refractive index of the sandwich layer is larger than the refractive index of the lower envelope and the upper envelope; a plurality of strip-shaped waveguide grooves are formed on the lower envelope; the strip-shaped waveguide grooves are filled with the organic-inorganic composite materials of the sandwich layer, so as to form a buried structure. The method for making the optical waveguide amplifier is simple; the refractive index difference between the polymer sandwich layer and the envelope material is easy to control; and the thickness of each layer of material is easy to control. The optical waveguide amplifier has the advantages of low cost, good gain performance and high yield, and is suitable for mass production.
Owner:JILIN UNIV
Preparation method of fully-inorganic cesium-lead-halogen perovskite nanocrystalline film
ActiveCN110886017AImprove solubilityFast one-time film formationPolycrystalline material growthFrom normal temperature solutionsThermal sprayingOleylamine
The invention relates to a preparation method of a fully-inorganic cesium-lead-halogen perovskite nanocrystalline film. The method includes 1) fully mixing DMF, oleic acid and oleylamine to obtain a mixed solution; 2) adding CsX and PbY2 separately into the mixed solution of the step 1), then stirring, standing and performing centrifugation to obtain a precursor solution; 3) washing drying and heating a film substrate sequentially, then spraying the precursor solution onto the film substrate when the substrate is still hot to obtain the fully-inorganic cesium-lead-halogen perovskite nanocrystalline film, wherein X and Y are one or more of Cl, Br and I. Compared with the prior art, the method can rapidly achieve one-time film formation, has the advantages of simple operation and low cost, and the prepared nanocrystalline film has advantages of uniform distribution, high crystalline quality, and good luminous performance, and has broad application prospects.
Owner:SHANGHAI INST OF TECH
Preparation method of Bi3O4Br/CsPbBr3 composite material
ActiveCN113318761AImprove efficiencyEasy to operateGas treatmentPhysical/chemical process catalystsPtru catalystOleylamine
The invention relates to the field of functional nano materials, and provides a preparation method of a Bi3O4Br / CsPbBr3 composite material aiming at the problem of insufficient performance of CsPbBr3 in photocatalytic reduction of CO2, and the preparation method comprises the following steps: (1) mixing a Bi(NO3)3.5H2O solution and a KBr solution, adding ammonia water, conducting reacting at 150-180 DEG C for 10-14 hours, and conducting post-processing to obtain a Bi3O4Br nanosheet; and (2) adding the Bi3O4Br prepared in the step (1), PbBr2, oleylamine and oleic acid into octadecene, conducting heating for 2-3 hours, injecting a cesium oleate reaction precursor, conducting reacting for 3-10 seconds, and performing post-treatment to obtain the Bi3O4Br / CsPbBr3 composite material. The high-efficiency CO2 photocatalytic reduction catalyst is obtained by regulating and controlling the molar ratio of Bi3O4Br to CsPbBr3, the steps are simple, the cost is low, and the catalytic performance is good.
Owner:HANGZHOU NORMAL UNIVERSITY
Preparation method of high-density Y2O3 doped W-Re alloy
The invention discloses a preparation method of a high-density Y2O3 doped W-Re alloy. W-Re-Y2O3 composite powder is prepared by combining a wet chemical method and hydrogen reduction, and a dispersing agent triethanolamine oleate is added to enable HReO4 and Y2O3 to be more uniformly distributed in precursor powder and subsequent powder reduced by hydrogen; and then a block is prepared through a spark plasma sintering technology, in the sintering process, the element Re is subjected to solid solution treatment to be in a tungsten matrix, Y2O3 particles play a pinning role in dislocation, grains can be remarkably refined, and the plasticity of a tungsten-based composite material is improved.
Owner:HEFEI UNIV OF TECH
Antitumor Composition Based on Hyaluronic Acid and Inorganic Nanoparticles, Method of Preparation Thereof and Use Thereof
ActiveUS20170143756A1Selective activityHigh expressionHeavy metal active ingredientsOrganic active ingredientsHepatocellular carcinomaParamagnetic nanoparticles
The invention relates to an antitumor composition based on hydrophobized hyaluronan and inorganic nanoparticles stabilized by oleic acid. The hydrophobized hyaluronan in the form of an acylated hyaluronan serves in the composition as a carrier of inorganic nanoparticles. Out of the group of inorganic nanoparticles, the composition may comprise superparamagnetic nanoparticles, nanoparticles of ZnO and moreover, upconversion nanoparticles. Said composition is selectively cytotoxic with respect to both suspension and adherent tumor cell lines, especially with respect to tumor cell lines of colorectum carcinoma and adenocarcinoma, lung carcinoma, hepatocellular carcinoma and breast adenocarcinoma. The highest cytotoxic effects were observed in case of the composition based on an oleyl derivative of hyaluronan with SPIONs. The composition of acylated hyaluronan with SPIONs may also be advantageously used for an in vivo detection of accumulation of the composition in the body, preferably in a tumor or in liver. Said composition is sterilizable in the final package.
Owner:CONTIPRO AS
Pt-Ni binary alloy supported CeO2 nanoparticles and preparation method thereof
ActiveCN110993967AImprove anti-poisoning performanceImproved resistance to CO poisoningCell electrodesPtru catalystCerium(IV) oxide
The invention relates to Pt-Ni binary metal alloy supported cerium dioxide nanoparticles and a preparation method thereof. The Pt-Ni binary metal alloy loaded cerium dioxide is synthesized in one stepby utilizing a solvothermal method. Specifically, oleylamine oleic acid is adopted as a dispersing agent to inhibit growth of crystals, and added formaldehyde can induce CeO2 in gaps in the surface of Pt-Ni alloy, so that whether rare earth metal oxide has the effects of improving CO poisoning resistance of the catalyst and improving electro-catalysis of the catalyst or not is explored. The synthesized CeO2 with very small diameter is added to the surface of the catalyst by utilizing gaps in Pt-Ni alloy groups, and the CO poisoning resistance of the metal catalyst is improved by utilizing thestrong oxidation effect of the CeO2 on CO, so that the electro-catalytic stability of the metal catalyst is remarkably improved.
Owner:UNIV OF JINAN
Oleylamine oleic acid modified tetravalent manganese doped fluoride red-light-emitting material and preparation method thereof
PendingCN113583656ANot afraid of water and oxygenLow costEnergy efficient lightingLuminescent compositionsLuminous intensityColor rendering index
The invention discloses an oleylamine oleic acid modified tetravalent manganese doped fluoride red-light-emitting material and a preparation method thereof. The material takes organic amine metal fluoride as a matrix, tetravalent manganese ions Mn < 4 + > as an activating agent and oleic acid oleylamine as a ligand, the chemical composition is A2B1-xF6: xMn < 4 + > (OA, OC), the value of x is 0.1%-5%, A is rigid symmetric-asymmetric structure organic fluoride salt, and B is Ti < 4 + >, Si < 4 + >, Zr < 4 + >, Ge < 4 + > and Sn < 4 + >; through excitation of a blue light lamp, the fluorescent powder emits bright red light, the luminous intensity is high, and the fluorescent powder has good stability and moisture resistance. The preparation method adopted in the invention is simple, the obtained product is stable in quality, the red light missing part of the commercial cold white light LED can be supplemented, the color rendering index of the commercial cold white light LED can be improved, the moisture resistance of the fluorescent material is greatly improved and the packaging difficulty is reduced through combination with ligands such as oleic acid oleylamine, and the method is suitable for large-scale production.
Owner:CHINA JILIANG UNIV
Up-conversion nanowire and preparation method and application thereof
ActiveCN111748346ASmall aspect ratioGood flexibilityNanoopticsLuminescent compositionsRare-earth elementChemical physics
The invention discloses an up-conversion nanowire and a preparation method and application thereof. According to the method, a coprecipitation method is used for the first time, the up-conversion nanowire K2YF5: 18% Yb / 2% Er which is consistent in shape and uniform in size is prepared by regulating and controlling conditions such as oleic acid content, fluorine ion content and reaction time, and the up-conversion nanowire K2YF5: 18% Yb / 2% Er has extremely strong luminescence under the excitation of near-infrared light. According to the method, rare earth element acetate is used as a precursorto prepare the up-conversion material, and the nanowire morphology can be regulated and controlled by regulating the oleic acid proportion, the fluorine ion concentration and the reaction time. The one-dimensional nanowire prepared by the technology has high flexibility, can be bent without breakage, has good ductility and stretchability, and can be applied to flexible optical devices and the like.
Owner:ZHEJIANG UNIV
CsPbX3 perovskite nano-crystal and synthesis method thereof
InactiveCN110684530AImprove luminous performanceImprove crystal qualityNanoopticsLuminescent compositionsAcetic acidPhysical chemistry
The invention relates to the field of materials, particularly to a CsPbX3 perovskite nano-crystal and a synthesis method thereof. The synthesis method comprises: carrying out a reaction on cesium carbonate, lead acetate, oleic acid, oleylamine, tri-n-octylphosphine and octadecene at 110-130 DEG C for 1-2 h, heating the solution to 175-185 DEG C, adding HX, carrying out a reaction, and then mixingthe reacted solution and liquid nitrogen or liquid helium to cool CsPbX3, wherein X is one or two selected from Cl, Br and I. According to the invention, by directly mixing the liquid nitrogen or liquid helium and the generated CsPbX3 nano-crystal to cool the CsPbX3 nano-crystal, the continuous growth of crystal grains formed at a high temperature can be avoided, the growth of small crystal grainsin the cooling process can be avoided, and the high-quality crystals with uniform grain sizes are obtained, so that the CsPbX3 nano-crystals have efficient photoelectric characteristics.
Owner:SOUTHWEST JIAOTONG UNIV
CO<2>/N<2> switch type fluorescent liquid-liquid phase separation nano-droplet and preparation method thereof
ActiveCN112675317AHas fluorescent propertiesPH responsiveGenetic material ingredientsPharmaceutical non-active ingredientsActive agentSurface-active agents
The invention belongs to the field of fluorescent carrier nanotechnologies, and particularly relates to a CO<2> / N<2> switch type fluorescent liquid-liquid phase separation nano-droplet and a preparation method thereof. Preparation raw materials in the invention include oleamide propyl dimethyl tertiary amine and carbon quantum dots; the fluorescent nano-droplet is constructed by electrostatic interaction force, hydrogen bonds and the like between a surfactant PKOO and the carbon quantum dots; the construction method is simple; and the constructed nano-droplet has the characteristics of pH responsiveness, CO<2> / N<2> responsiveness, fluorescence characteristic and the like.
Owner:GUANGDONG PHARMA UNIV +1
Pre-vaporization formulation for controlling acidity in an e-vaping device
ActiveUS10327472B2Increase acidityGreat proportionTobacco treatmentPharmaceutical delivery mechanismBenzoic acid4-pentenoic acid
Owner:AKRIA CLIENT SERVICES LLC
Fluorine-doped titanium dioxide nano powder with transparent and near-infrared shielding functions
ActiveCN113149069AHigh visible light transmittanceBoth near-infrared blocking performanceMaterial nanotechnologyTitanium dioxideNitrogen gasOleylamine
The invention discloses fluorine-doped titanium dioxide nano powder with a transparent function and a near-infrared shielding function. The preparation method comprises the following steps: mixing oleylamine, oleic acid, 1-octadecene, octadecanol, a titanium source and a fluorine source, heating and uniformly stirring in a nitrogen atmosphere, degassing, raising the temperature to 260-320 DEG C, and keeping the temperature for 0.5-2 hours; and cooling, washing and drying the reaction product. After the fluorine-doped titanium dioxide nano powder forms a film, the light transmittance is greater than 90%, and the near-infrared rejection rate is 17%-43%. According to the invention, titanium dioxide has near-infrared barrier property on the premise of ensuring high visible light transmittance, the absorbance of the product in a near-infrared light area is enhanced along with the increase of the use amount of the fluorine source, and the absorption of the titanium dioxide nano-powder to near-infrared light can be changed by adjusting the F-doping amount; the prepared transparent heat-insulating film has high transmittance in a visible light region and good barrier property in a near-infrared light region, and has good application value in the aspect of transparent heat-insulating coatings.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of perovskite quantum dot/Eu-MOF composite luminescent material
ActiveCN111676010AEasy to synthesizeGood dispersionEnergy efficient lightingLuminescent compositionsEuropiumOleylamine
The invention discloses a preparation method of a perovskite quantum dot / Eu-MOF composite luminescent material, which comprises the following steps: S1, adding europium nitrate hexahydrate and biphenyltetracarboxylic acid into a mixed solution of DMF and water, heating, cooling, removing residual DMF, and carrying out vacuum drying to obtain an Eu-MOF crystal, S2, mixing the dried Eu-MOF crystal with a DMF solution of PbBr2 to obtain a precursor solution of PbBr2@Eu-MOF, S3, adding CsBr, stirring until the mixture is clear, adding oleylamine oleate, and then transferring into methylbenzene toprimarily prepare a perovskite quantum dot / Eu-MOF composite luminescent material, and S4, centrifugally dispersing the material in an n-hexane solution, stirring, and filtering out precipitates and the like to prepare the high-purity perovskite quantum dot / Eu-MOF composite light-emitting material, thereby solving the problem of poor stability of perovskite quantum dots and the problem of a red light region loss of the existing white light LED.
Owner:JIANGXI UNIV OF SCI & TECH
A manganese doped cspbbr 3 Perovskite quantum dot and molecular sieve composite luminescent material and its preparation method and application
ActiveCN107384387BGood environmental stabilityReduce the dosage ratioMaterial nanotechnologyNanoopticsGreen-lightOleylamine
Owner:SOUTH CHINA UNIV OF TECH
Nickel telluride microsphere and preparation method and application thereof
InactiveCN111392698AUniform shapeStable physical and chemical propertiesPhysical/chemical process catalystsMetal selenides/telluridesNickel saltMicrosphere
The invention provides a nickel telluride microsphere and a preparation method and application thereof, and belongs to the field of functional materials. The preparation method of the nickel ditelluride microsphere comprises the following steps: mixing tellurium powder, dodecanethiol and oleylamine, and performing ultrasonic treatment to obtain a precursor solution of tellurium; mixing nickel salt, octadecene, oleylamine and oleic acid, heating and dissolving to obtain and a nickel source solution; and mixing the tellurium precursor solution with the nickel source solution, and carrying out areduction reaction to obtain the nickel telluride microsphere. The nickel ditelluride microsphere obtained by the preparation method has excellent photocatalytic degradation performance on methylene blue under the irradiation of a xenon lamp, the photocatalytic degradation performance is not reduced and the crystal structure does not change after the nickel ditelluride microsphere is recycled forfive times, and the nickel ditelluride microsphere has a relatively high hydrogen production rate under the irradiation of the xenon lamp.
Owner:NORTHWEST UNIV
Efficient preparation method of CuInS2/ZnS semiconductor nanocrystals in cuboid shape
ActiveCN111072059AImprove stabilityIncreasing the thicknessMaterial nanotechnologyFinal product manufacturePhysical chemistrySemiconductor nanocrystals
The invention discloses an efficient preparation method of CuInS2 / ZnS semiconductor nanocrystalline in a cuboid shape. The preparation method specifically comprises the following steps: (1) preparingCuInS2 / ZnS nano cores, performing purification, and then dissolving the nano cores in tri-n-octylphosphine to obtain a TOP / NCs solution; (2) in an argon environment, mixing sulfur powder with TOP, andcarrying out ultrasonic treatment until a clear TOP / S solution is obtained; (3) heating tri-n-octylphosphine oxide, zinc oxide and oleic acid to 120-130 DEG C in an argon environment to react for 50-60 minutes, and heating to 345-350 DEG C to change reactants into a clear solution; and (4) injecting the TOP / NCs solution into the product obtained in the step (3), setting the temperature to be 335-340 DEG C, injecting the TOP / S solution when the temperature is 335-340 DEG C, reacting for 15-18 minutes, and cooling to room temperature to obtain the CuInS2 / ZnS nanocrystals in a cuboid shape.
Owner:上海尚朴光电技术有限公司
Preparation method of quantum dot film
PendingCN114316970AImprove stabilityImprove luminosityLuminescent compositionsPolyesterAdhesive glue
The preparation method of the quantum dot film comprises the following steps: S1, preparing an MOF material; s2, adding a reaction amount of a cesium source and oleic acid into a solvent octadecene, and under the protection of an inert atmosphere, heating and magnetically stirring until full reaction to prepare a cesium oleate precursor solution; s3, adding a reaction amount of the MOF material, PbX2, oleic acid and oleylamine into a solvent octadecene to prepare a CsPbX3-coated MOF quantum dot composite material; wherein X is Br and I; s4, mixing the CsPbBr3 (at) MOF and CsPbI3 (at) MOF quantum dot composite material with matrix resin, scattering particles, an initiator and a diluent to prepare quantum dot glue; s5, coating the quantum dot glue prepared in the step S4 through a slit, respectively laminating the quantum dot glue with a brightness enhancement film and a PET polyester film, and curing the middle quantum dot layer under the action of illumination to prepare a quantum dot film; according to the invention, the quantum dots are packaged in the MOF material with excellent luminescence characteristic, high stability and ultrahigh porosity, so that the thermal stability of the quantum dots is greatly improved.
Owner:NINGBO DXC NEW MATERIAL TECH
High-performance wide-band scintillator material
InactiveCN114164001AImprove energy transfer efficiencyReduce distanceLuminescent compositionsMANGANESE ACETATELutetium
The invention belongs to the field of inorganic luminescent materials. A high-performance wide-band scintillator material has a chemical formula of LiLuF4: Gd / Ca / Mn (at) LiYF4, and a preparation method of the high-performance wide-band scintillator material sequentially comprises the following steps: adding lithium trifluoroacetate, lutetium trifluoroacetate, gadolinium trifluoroacetate, manganese acetate, calcium trifluoroacetate, oleic acid, oleylamine and octadecene into a three-necked bottle, reacting at a high temperature, naturally cooling to room temperature, washing and centrifuging to obtain a LiLuF4: Gd / Ca / Mn nanocrystalline core; and then preparing the LiLuF4: Gd / Ca / Mn coated LiYF4 core-shell nanocrystal by a layer-by-layer epitaxial growth method. The method has the advantages that the preparation method is simple, the cost is low, the yield is high, the product has the characteristics that X-ray excited Mn < 2 + > ion wide-band luminescence is shown, the light yield is high, and the resolution ratio of X-ray imaging can be greatly improved.
Owner:CHINA JILIANG UNIV
Preparation method and application of ionic liquid modified quantum dots
PendingCN114231286AImprove stabilityImprove photoelectric performanceMaterial nanotechnologySolid-state devicesOrganic solventDevice material
The invention provides a preparation method of an ionic liquid modified quantum dot, the method comprises the following steps: preparing a PbSe semiconductor quantum dot through a thermal injection method, then adding an ionic liquid into the quantum dot for ligand exchange to replace an oleic acid long-chain ligand on the surface of the quantum dot, and the method can improve the stability of the quantum dot in air. The invention also provides application of the quantum dot in a semiconductor device, the quantum dot is dispersed in an organic solvent for spin coating to prepare a semiconductor quantum dot film, the obtained film is more continuous and uniform, and the photoelectric property of the device is remarkably improved.
Owner:北京安兴高科新能源发展有限公司
Two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof
PendingCN114291840AEffectively regulate the ratio of selenium to sulfurEfficiently control the sizeTin compoundsNanotechnologyPhotovoltaic detectorsThiourea
The invention relates to a two-dimensional adjustable SnSSe porous nanosheet as well as preparation and application thereof. The method comprises the following steps: mixing SnCl4, Na2SeO3, thiourea, oleamide, hydrazine hydrate, sodium hexadecyl benzene sulfonate and water to obtain a precursor solution, and putting the precursor solution into a hydrothermal reaction kettle for hydrothermal reaction to obtain the two-dimensional adjustable SnSSe porous nanosheet. When the two-dimensional adjustable SnSSe porous nanosheet prepared by the preparation scheme is used as a photoelectrochemical photoelectric detector, the two-dimensional adjustable SnSSe porous nanosheet has relatively high photoelectric response performance and conversion performance. The method is simple in process, easy to control and high in production efficiency.
Owner:HANGZHOU DIANZI UNIV
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