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38results about How to "Has photochromic properties" patented technology
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Method for preparing organic photochromic nanofibers
InactiveCN102071490AOvercome the disadvantage of low color fastness to washingOvercome the disadvantage of delaying photochromic discoloration reactionFilament/thread formingMonocomponent synthetic polymer artificial filamentFiberBattle fatigue
The invention relates to a method for preparing organic photochromic nanofibers, and the method comprises the following steps: dissolving organic photochromic compounds into a polymer solution so as to obtain a spinning solution; and preparing the spinning solution into nanofibers by using an electrostatic spinning technology, wherein the organic photochromic materials are spirooxazine type, spiropyrane type, diarylethene type, fulgide type and azo dye type photochromic materials, and the like; and the polymer materials refer to polyvinylpyrrolidone resins, polystyrene resins, polymethylmethacrylate resins, polyvinyl alcohol, polyethylene terephthalate (PET) resins and the like. The organic photochromic nanofibers prepared by the method provided by the invention have high sensitivity and excellent endurance performance, and can be applied to clothing materials for garments, shoes and hats, daily fabrics for fabrics and carpets, polymer fibers for cosmetics, discoloration windows, displays, chemical sensors and optical storage devices; and in the military field, the prepared organic photochromic nanofibers can be used for battle fatigues, tents, military machinery, and the like.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH
High amino content ordered mesoporous silicon dioxide film and its preparation method and application
InactiveCN101214966AHigh transparencyImprove thermal stabilitySilicaTenebresent compositionsPolymer scienceSilanes
The invention relates to a preparing process and application sequential mesoporous silicon dioxide film with high amino content. The preparing process of the invention takes various surface active agent as template, takes tetraethyl ortho-silicate and 3-3-aminopropyl triethoxysilane as the silicon source, utilizing sol-gel manner, leading the amino silane to take the molar percentage of the whole silane of 30-60 by introducing amino silane directly part of silica sol, after forming homogeneous solution, relying on the synergy of the silane and organic templates, forming films by dip-coating on the clear substrate, finally forming functional sequential silicon dioxide film with different meso-structure and high amino content. The silicon dioxide mesoporous film of the invention has perfect assembly and fixing property to organic molecules, inorganic anions, protein, enzyme molecule and the like object materials.
Owner:NAT UNIV OF DEFENSE TECH
Inorganic-organic composite material with photochromic feature and preparation process thereof
InactiveCN100999660AHas photochromic propertiesSimple processTenebresent compositionsNitrateIon exchange
The present invention belongs to the field of organic-inorganic composite material preparing technology, and is especially one kind of organic-inorganic composite material with photochromatic characteristic and its preparation process. The present invention is organic matter intercalated hydrotalcite in supermolcular structure in the chemical expression of [(M2+)1-x(M3+)x(OH)2]x+(An-)x / n.mH2O, where, M2+ is Zn2+ and M3+ is Al3+. The preparation process includes the first preparing Zn-Al-nitrate radical hydrotalcite precursor for ion exchange, the subsequent ion exchange to intercalate organic matter into the hydrotalcite interlayer, and final irradiating the assembled material under 500 W high pressure xenon lamp for 25-300 min. Compared with traditional photochromatic organic-inorganic composite material, the present invention has simple preparation process and no pollution.
Owner:BEIJING UNIV OF CHEM TECH
Hydrotalcite with photochromic characteristic and its prepn process
The present invention provides one kind of hydraotalcite with photochromic characteristic and its preparation process, and belongs to the field of hydraotalcite preparing technology. The hydraotalcite has crystal structure and chemical expression of [(M2+)1-x(M3+)x(OH)2]x+(An-)x / n.mH2O, where x is 0.1-0.33, m=3-6 is interlayer crystallized water molecule number, M2+ expresses bivalent metal ion Ni, Co or Fe, M3+ expresses trivalent metal ion Co, Fe, Al or Ga, and An- is anion nitrate radical, p-nitrobenzoate radical, m-nitrobenzoate radical, p-aminobenzoate radical, p-aminobenzene sulfonate radical or chlorobenzoate radical. The present invention has the advantages of synthesis of hydraotalcite with photochromic characteristic for the first time, simple preparation process, low cost and easy reaction.
Owner:BEIJING UNIV OF CHEM TECH
Preparation method and application of azobenzene-based light energy storage phase change material
PendingCN111748323AAchieve reversible releaseHigh speedOrganic chemistryMaterial analysis by observing effect on chemical indicatorAlkanePtru catalyst
The invention discloses a preparation method of an azobenzene-based light energy storage phase change material. The method comprises the following steps that: (1) preparing photoresponse azobenzene molecules: carrying out a reaction on 4-hydroxyazobenzene and 1-bromoalkane by using N, N-dimethylformamide as a solvent under an alkali and iodine-containing catalyst condition to obtain 4-alkoxy azobenzene energy storage molecules; and (2) preparing the azobenzene light energy storage phase change material: carrying out melt blending on the 4-alkoxy azobenzene energy storage molecules prepared inthe step (1) and an organic phase change material, fully stirring the molecules and the organic phase change material to obtain the azobenzene light energy storage phase change material. The phase change point of the phase change material decreases under ultraviolet irradiation, the phase change point of the phase change material rises under visible light irradiation, light response phase change control exists. The azobenzene light energy storage molecules have photochromic performance; the change of the color can indicate the change of an isomerism degree; and based on the corresponding relation, an energy storage state can be monitored, and the utilization efficiency of energy is improved.
Owner:JIANGNAN UNIV
Spiroindene compounds and preparation and application thereof
ActiveCN108083969AHigh Luminous Quantum EfficiencyImprove thermal stabilityCarboxylic acid nitrile preparationOrganic compound preparationQuantum yieldUltraviolet lights
The invention discloses organic light-emitting materials with reversible photochromism property. The organic functional materials are a series of spiroindene compounds; when being irradiated with ultraviolet light, the compounds can be photochromic in both solution and solid states, that is to say, a color can be changed from an original color to orange yellow or pink, and the original color of the compounds can be restored after illumination is removed. In addition, the compounds disclosed by the invention have excellent fluorescence properties in the range of visible light wavelengths, the emission wavelengths can be regulated by conjugation modification and substituent modification, and the materials are high in fluorescence quantum yield and high in glow brightness, and can be used inmanufacture of organic light-emitting diode elements.
Owner:长沙道尔顿电子材料有限公司
Photochromic room temperature magnetic semiconductor material and preparation method thereof
ActiveCN109439313AFast magnetic responseFast photochromic rateInorganic material magnetismTenebresent compositionsTungstateLamellar structure
The invention relates to a photochromic room temperature magnetic semiconductor material and a preparation method thereof. The semiconductor material adopts a Bi2WO6 semiconductor material, the morphology of the semiconductor material adopts a lamellar structure; the lamella thickness is 1 to 5nm. The semiconductor material is formed by regulating a bismuth source and tungstate through a high molecular surfactant in a hydrothermal condition. The semiconductor material has the advantages that the morphology of the semiconductor material adopts a lamellar structure, a lamella adopts an ultrathinnanosheet, and the lamellar structure is beneficial to transferring of illuminated electron between a Bi2O2 lamella and a WO6 lamella, so that spin magnetic moment is produced, and photoinduced magnetism is exhibited. The semiconductor material has photochromic performance at a room temperature, and is high in photochromic rate, and the color can be changed after 5 to 10min of irradiation.
Owner:SHANDONG UNIV
Double functional photochromism compound with stable nitrogen-oxygen free radical group and spiro oxazinyl and synthetic method and use thereof
InactiveCN101012371AParamagneticHas photochromic propertiesOrganic chemistryElectronic switchingHalogenHydrogen
The invention discloses a dysfunctional photoproduced color bleeding compound and synthesizing method and application with stable nitrogen-oxygen free radical and spiral oxazine radical, which is characterized by the following: adopting substituted 9'-hydroxy indole oxazine and stable nitrogen-oxygen free radical as raw material; obtaining the product with structural formul as right formula (R1 is C1-C18 alkyl; R2 is hydrogen, C1-8 alkyl, C1-8 alkoxy, halogen or condensed benzene ring; L is connecting arm - (CH2) m-; m is between 1 and 9).
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
CDs/TiO2 film, and preparation method and application thereof
ActiveCN110577368ALight polarization sensitiveVery sensitive to light polarizationNano-carbonCoatingsHolographic storageDip-coating
The invention discloses a CDs / TiO2 film, and a preparation method and an application thereof, and relates to the technical field of CDs / TiO2 films. The problems of poor preparation methods and poor light polarization sensitivity of a carbon-based titanium dioxide composite film are solved. The CDs / TiO2 film comprises a glass substrate, a TiO2 nano-porous layer deposited on the glass substrate, andcarbon dots adsorbed on the TiO2 nano-porous layer or a carbon dot layer deposited on the TiO2 nano-porous layer. The method comprises the following steps: depositing the TiO2 nano-porous layer on the glass substrate by adopting a dip-coating process, preparing a carbon dot solution, and soaking the deposited glass substrate in the carbon dot solution to prepare carbon dots adsorbed on the TiO2 nano-porous layer, or dispensing the carbon dot solution on the deposited glass substrate to prepare the carbon dot layer. The film can be applied to holographic storage, light wavelength indication orlight polarization state indication. The film of the invention has a higher light polarization sensitivity than the traditional carbon-based titanium dioxide composite film, and also has a high flatness and a good transparent effect; and the preparation method has the advantages of simplicity, low cost, and obtaining of the CDs / TiO2 film with good quality.
Owner:NORTHEAST NORMAL UNIVERSITY
Triarylethene photochromic material, method and application of triarylethene photochromic material as 3D printing ink
PendingCN112552897AReduce yieldImprove stabilityPreparation from carboxylic acid halidesOrganic compound preparationWittig reactionPolymer chemistry
The invention discloses a triarylethene photochromic material, a method and an application of the triarylethene photochromic material as 3D printing ink; the triarylethene photochromic material is a fast-response triarylethene photochromic material which is light-controllable in real time, good in memory storage function and excellent in erasability, and the triarylethene photochromic material issimple in process, high in yield and easy to purify by the aid of two synthesis methods (Corey-Funchs reaction and Wittig reaction); different functional groups are introduced, so that the photochromic property, the light emitting wavelength and other properties of a final product are adjusted. The triarylethene photochromic material containing the unsaturated polymerizable group derivative is applied to the field of 3D printing, and a photochromic three-dimensional structure with an excellent surface, a microstructure and a complex geometrical shape is obtained through a 3D printing technology. The synthesis method disclosed by the invention is simple in process, the obtained product is easy to purify, triarylethylene has no cis-trans isomerism and can be subjected to a pericyclization reaction under ultraviolet irradiation to form a closed loop structure, the closed loop structure has photochromic property, and the synthesized photochromic material has good stability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Method for preparing photochromic PET/PTT alloy
The invention discloses a method for preparing a photochromic PET / PTT alloy. The photochromic PET / PTT alloy comprises, by weight parts, 50-60 parts of PET, 10-30 parts of PTT, 2-5 parts of SMA, 5-6 parts of MBS, 1-5 parts of diatomaceous earth / anti-bacterial compound undergoing surface treatment by a coupling, 1-3 parts of diatomaceous earth / inorganic oxide undergoing surface treatment by a coupling, 1-3 parts of photochromic compound, 0.5-2 parts of nano silica, 0.1-0.5 part of antioxidant and 0.1-1 part of lubricant. By reasonable matching of the photochromic compound, the diatomaceous earth / anti-bacterial compound and the diatomaceous earth / inorganic oxide and through synergistic effects between function additives, the photochromic PET / PTT alloy has excellent anti-bacterial, anti-formaldehyde and deodorization characteristics and photochromic characteristics and meets multifunctional requirements, and the application of the photochromic PET / PTT alloy is further broadened.
Owner:佛山市高明区尚润盈科技有限公司
Photochromic carbon fibers based on inorganic materials and preparation method thereof
InactiveCN110747641AHas photochromic propertiesNo pollution in the processCarbon fibresTenebresent compositionsFiberCarbon fibers
The invention relates to photochromic carbon fibers based on inorganic materials and a preparation method thereof, which are characterized in that tungsten trioxide and molybdenum trioxide are made into a nanoscale oxide aqueous dispersion, a polyacrylate / tungsten trioxide / molybdenum trioxide aqueous dispersion composite emulsion is prepared by performing polymerization and emulsification on the nanoscale oxide aqueous dispersion and a vinyl monomer, and then the emulsion is applied to the surface of carbon fibers to obtain the photochromic carbon fibers based on the inorganic materials. The photochromic carbon fibers prepared by the invention turn from light yellow to blue under the irradiation of a 500W xenon lamp as a light source; after being washed 20 times, the carbon fibers keep photochromism unimpaired. The whole preparation process is simple, and causes no pollution to the environment.
Owner:WUHAN TEXTILE UNIV
Inorganic-organic hybrid superlattice material with photochromic property as well as preparation and application of inorganic-organic hybrid superlattice material
ActiveCN111162168AHas photochromic propertiesStrong free radical signalSolid-state devicesSemiconductor/solid-state device manufacturingPhysical chemistryHybrid material
The invention discloses an inorganic-organic hybrid superlattice material with photochromic performance as well as a preparation method and application of the inorganic-organic hybrid superlattice material. The inorganic-organic hybrid superlattice material is green and has a very strong free radical signal when not being heated, after being heated, turns yellow due to the quenching of free radicals, and returns to an unheated state after being soaked in an ethanol solution and then subjected to illumination treatment. When the material is not heated, the conductivity of the material is in themagnitude of 10 <-4 > S cm <-1 >, and the conductivity of a heated and faded sample is reduced by nearly 5 magnitudes. The material is different from a traditional inorganic-organic hybrid material when not being heated. The inorganic part and the organic part of the material are both neutral, and the stability of the structure is still kept even if the material is soaked in water. The preparation method utilizes a light-induced synthesis technology, uses light as the energy for opening a superlattice layer, is simple to operate during the preparation process, and is high in yield.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Photochromic lyocell fiber and preparation method thereof
ActiveCN111334880AColor change achievedHas photochromic propertiesMonocomponent cellulose artificial filamentLyocellPhotochromism
The invention discloses a photochromic lyocell fiber and a preparation method thereof. The photochromic lyocell fiber is prepared by mixing a photochromic raw material into a lyocell fiber raw material spinning solution and spinning, wherein the mass ratio of the photochromic raw material to lyocell fiber raw material is 1:25-35; the photochromic raw material is modified photochromic lignin; and the lyocell fiber raw material is cotton pulp. The photochromic lyocell fiber has a good photochromic characteristic and is stable in performance; and the preparation method of the photochromic lyocellfiber is simple and low in cost.
Owner:当阳市鸿阳新材料科技有限公司
Photochromic azobenzene polyamide, preparation method thereof and photochromic nylon fiber
ActiveCN112961341AImprove high temperature resistanceWith color changing functionMonocomponent copolyamides artificial filamentTenebresent compositionsAlkanePolymer science
The invention provides photochromic azobenzene polyamide, a preparation method thereof and a photochromic nylon fiber. The photochromic azobenzene polyamide comprises a polyamide chain segment and an azobenzene derivative chain segment, and a benzene ring structure in the azobenzene derivative chain segment is on a main chain of the photochromic azobenzene polyamide. A carboxyl azobenzene derivative containing alkane and amino is firstly prepared, the amino and carboxyl are on the same benzene ring, the carboxyl azobenzene derivative is used as a polymeric monomer to be subjected to melt polymerization with lactam or alkane polyamine and alkane polybasic acid, and azobenzene polyamide is obtained. According to the invention, an azobenzene structure is embedded into a nylon molecular chain, so that polyamide has a photochromic function and also has high melt spinning performance, and nylon fibers obtained by melt spinning of polyamide have good mechanical properties and photochromic function.
Owner:WUHAN TEXTILE UNIV
Photochromic master batch for fiber core layer with skin-core structure and preparation method of photochromic master batch
InactiveCN110591303AImprove water resistanceImprove wear resistanceFilament/thread formingConjugated synthetic polymer artificial filamentsFiberAntioxidant
The invention provides a photochromic master batch for a fiber core layer with a skin-core structure. The photochromic master batch is composed of the following components in parts by weight: 0-90 parts of a carrier, 1-30 parts of photochromic powder, 0-20 parts of a dye, 0.5-2.5 parts of a mixture and 0.5-1.5 parts of a dispersing aid, wherein the carrier and a core layer fiber of the skin-core structure fiber are polymers of a same type, and the mixture comprises a heat stabilizer and an antioxidant. The invention further provides a preparation method of the photochromic master batch for thefiber core layer with the skin-core structure. The photochromic master batch disclosed by the invention is suitable for production of skin-core structure fibers, so that a fabric manufactured by thefibers has a photochromic characteristic; besides, as the carrier of the photochromic master batch and the core layer fiber of the sheath-core structure fiber are polymers of the same type, the carrier can have good compatibility with the core layer fiber, the dyeing performance of the core layer fiber is improved thermally, the photochromic material can be effectively prevented from falling off,and the water washing resistance and the wear resistance of the sheath-core structure fiber are improved.
Owner:POLY PLASTIC MASTERBATCH SUZHOU
Photochromic polyester fiber with sheath-core structure
InactiveCN110629319ADope ColoringHas photochromic propertiesFilament/thread formingConjugated synthetic polymer artificial filamentsFiberMasterbatch
The invention discloses a photochromic polyester fiber with a sheath-core structure, which comprises a sheath layer and a core layer, wherein the mass ratio of the sheath layer to the core layer is 2:8 to 4:6; the sheath layer is polyester resin, and the core layer comprises core layer fibers and color master batch for coloring the core layer fibers, wherein the mass percentage of the color masterbatch to the core layer is 3% to 10%; the color master batch comprises, by weight, 0-90 parts of a carrier, 1-30 parts of photochromic powder, 0-20 parts of a dye, 0.3-1.5 parts of a heat stabilizer,0.2-1 part of an antioxidant, and 0.5-1.5 parts of a dispersion aid. According to the photochromic polyester fiber with the sheath-core structure, the color master batch is added into the core layer,so that the original solution coloring of the polyester fiber is achieved, the production cost is reduced, and the environmental pollution is reduced; moreover, since the color master batch containsphotochromic powder, the polyester fiber gains photochromic characteristics; and the photochromic effect is long, so that the use requirement is met.
Owner:POLY PLASTIC MASTERBATCH SUZHOU
Photochromic polylactic acid fiber master batch and preparation method thereof
InactiveCN110607059AHas photochromic propertiesSolve environmental pollutionMonocomponent polyesters artificial filamentArtifical filament manufactureFiberAntioxidant
The invention provides a photochromic polylactic acid fiber master batch. The composition is prepared from the following components in parts by weight: 0 to 90 parts of PLA, 0 to 30 parts of photochromic powder, 0 to 20 parts of coloring agent, 0.5 to 1.5 parts of antioxidant and 0.5 to 1.5 parts of dispersing aid, wherein the molecular weight of the PLA is 10000 to 50000, the melting point of thePLA is 150 to 190 DEG C, and the glass transition temperature of the PLA is 55 to 60 DEG C. The invention also provides a preparation method of the photochromic polylactic acid fiber master batch. The master batch disclosed by the invention is suitable for production of polylactic acid fibers, has photochromic characteristics, and can solve the problems of poor coating fastness, poor air permeability and hard hand feeling of an existing photochromic fabric; meanwhile, the problem of environmental pollution caused in the existing photochromic fabric manufacturing process is also solved.
Owner:POLY PLASTIC MASTERBATCH SUZHOU
Preparation method and application of photochromic chain transfer agent
ActiveCN106188076AEasy to makeGood Photochromic PropertiesOrganic chemistryTenebresent compositionsReversible addition−fragmentation chain-transfer polymerizationPolymer thin films
The invention discloses a preparation method and application of a photochromic chain transfer agent. Spiropyrane compounds and trithiocarbonate chain transfer agents are subjected to esterification reaction to synthesize a novel photochromic chain transfer agent. The structure of a compound is shown in a formula I; then by using the compound shown in the formula I as the chain transfer agent, a reversible addition-fragmentation transfer (RAFT) free radical polymerization behavior of styrene is investigated, and a silicon wafer is coated with an obtained polymer with a photochromic property through a spin-coating machine, thus obtaining a polymer film with the photochromic property. According to the preparation method and the application disclosed by the invention, a photochromic group is introduced into an RAFT chain transfer agent structure, the chain transfer agent with the photochromic property is prepared, and living free radical polymerization of monomers such as styrene can be successfully realized, thereby obtaining a functional polymer with the photochromic function, controllable molecular weight and narrower molecular weight distribution. (The formula is shown in the description).
Owner:HUNAN UNIV OF SCI & TECH
A kind of naphthalimide compound and its preparation method and application
ActiveCN113004277BHas photochromic propertiesEasy to synthesizeOrganic chemistryTenebresent compositionsImideCombinatorial chemistry
Owner:PINGXIANG UNIV
Photochromic ligand, Re (I) rectangular supramolecular complex, preparation method and application thereof
InactiveCN111253381AEasy to operateEasy to separate and purifyTenebresent compositionsGroup 7/17 organic compounds without C-metal linkagesChemical structureStructural formula
The invention discloses a photochromic ligand, a Re (I) rectangular supramolecular complex as well as a preparation method and an lication thereof. The chemical structural formula of the photochromicligand is shown as L, the chemical structural formula of the Re (I) rectangular supramolecular complex is shown as 1, and the ligand and the Re (I) rectangular supramolecular complex provided by the invention have ultraviolet photochromic performance.
Owner:SHANDONG NORMAL UNIV
Spiroindene compound and its preparation and application
ActiveCN108083969BHas photochromic propertiesStrong fluorescenceCarboxylic acid nitrile preparationOrganic compound preparationQuantum yieldPhoto irradiation
The invention discloses a class of organic light-emitting materials with reversible photochromic properties. This type of organic functional material is a series of spiroindene compounds. When irradiated with ultraviolet light, the compound can undergo photochromism in solution and solid state, that is, the color will change from its original color to orange-yellow or pink. The original color can be restored. In addition, the compound disclosed in the present invention has excellent fluorescence properties in the visible light wavelength range, and its emission wavelength can be regulated by conjugation modification and substituent modification, with high fluorescence quantum yield and high luminous brightness, and can be applied to organic light emitting diode elements manufacturing.
Owner:长沙道尔顿电子材料有限公司
Naphthalimide compound as well as preparation method and application thereof
ActiveCN113004277AHas photochromic propertiesEasy to synthesizeOrganic chemistryTenebresent compositionsImideCombinatorial chemistry
The invention relates to a naphthalimide compound as well as a preparation method and application thereof, the structure of the naphthalimide compound is shown as a formula (I), and in the formula (I), R1 is selected from C4-8 chain alkyl and C5-7 cycloalkyl; and R2 is selected from phenyl and 5-7-membered aromatic heterocyclic radical. The naphthalimide compound provided by the invention is a naphthalimide compound with a novel structure, can generate a large number of free radicals under an illumination condition, and has a photochromic characteristic; and the compound is simple to synthesize and low in preparation cost, and can be widely applied to preparation of photochromic materials.
Owner:PINGXIANG UNIV
A kind of composite material with photochromic performance and preparation method thereof
InactiveCN104140641BHas photochromic propertiesRaw materials are easy to obtainTenebresent compositionsMolybdenum compoundsSolvent
Owner:HARBIN INST OF TECH
A kind of preparation method and application of photochromic chain transfer agent
ActiveCN106188076BAbsorption peak intensityHas photochromic propertiesOrganic chemistryTenebresent compositionsPolymer sciencePolymer thin films
The invention discloses a preparation method and application of a photochromic chain transfer agent. Spiropyrane compounds and trithiocarbonate chain transfer agents are subjected to esterification reaction to synthesize a novel photochromic chain transfer agent. The structure of a compound is shown in a formula I; then by using the compound shown in the formula I as the chain transfer agent, a reversible addition-fragmentation transfer (RAFT) free radical polymerization behavior of styrene is investigated, and a silicon wafer is coated with an obtained polymer with a photochromic property through a spin-coating machine, thus obtaining a polymer film with the photochromic property. According to the preparation method and the application disclosed by the invention, a photochromic group is introduced into an RAFT chain transfer agent structure, the chain transfer agent with the photochromic property is prepared, and living free radical polymerization of monomers such as styrene can be successfully realized, thereby obtaining a functional polymer with the photochromic function, controllable molecular weight and narrower molecular weight distribution. (The formula is shown in the description).
Owner:HUNAN UNIV OF SCI & TECH
Photochromic ligand, re(i) rectangular supramolecular complex, preparation method and application
InactiveCN111253381BHas photochromic propertiesTenebresent compositionsGroup 7/17 organic compounds without C-metal linkagesChemical structureStructural formula
Owner:SHANDONG NORMAL UNIV
A preparation method of molybdenum compound suspension with photochromic performance
InactiveCN104099083BHas photochromic propertiesRaw materials are easy to obtainTenebresent compositionsWater bathsDistilled water
Disclosed is a preparation method of a molybdenum compound suspension with photochromic properties. The preparation method of the molybdenum compound suspension with the photochromic properties solves the problem that existing preparation methods of the molybdenum compound suspension with the photochromic properties are complex in process, prone to producing needless by-products and insensitive in the photochromic properties. The preparation method comprises, firstly, mixing ethanol or acetone with distilled water to obtain a mixed solution; secondly, mixing MoS2 blocky powder with the mixed solution to obtain a mixed liquor containing MoS2; thirdly, performing high-speed shearing on the mixed liquor through a high-speed shearing and emulsifying machine; fourthly, performing water bath ultrasonic treatment on the sheared mixed liquor; fifthly, performing centrifugal treatment and taking upper-layer clear liquor to obtain the molybdenum compound suspension. The preparation method of the molybdenum compound suspension with the photochromic properties is simple in process and easy to operate; the obtained molybdenum compound suspension is uniform and stable in quality and can obtain obvious photochromism under ultraviolet radiation for an hour, thereby being sensitive in the photochromic properties.
Owner:HARBIN INST OF TECH
High-activity photochromic bismuth oxychloride/calcium alginate photocatalytic hydrogel microbead and preparation method thereof
ActiveCN113101973AGood photochromic propertiesGood spherical shapeWater/sewage treatment by irradiationWater treatment compoundsSol-gelPhoto catalysis
The invention discloses a high-activity photochromic bismuth oxychloride / calcium alginate photocatalytic hydrogel microbead and a preparation method thereof. The bismuth oxychloride / calcium alginate (BOC-CA for short) hydrogel microbead is prepared by a sol-gel method. According to the hydrogel microbead, flaky BiOCl is uniformly loaded on the surface and in an internal network structure of the CA hydrogel microbead, the diameter is 6-7 mm, the sphericity degree reaches 98.3%, and the average water content is 95.2%. The BOC-CA hydrogel microbead has better ultraviolet light catalytic response, photochromic property and capability of recycling and cyclically degrading rhodamine B (RhB), can achieve the effect of completely degrading RhB within 75 minutes under the condition of ultraviolet light irradiation, and shows the trend of performance enhancement after being cyclically degraded for multiple times. The microbead becomes black from white under ultraviolet irradiation, and the color of the microbead can be recovered to an initial state after standing for a period of time. The method for fixing the BiOCl photocatalyst by using the gel microbeads provides a practical and effective way for solving the problem of recovery of a powder photocatalyst material.
Owner:TIANJIN CHENGJIAN UNIV
Synthesis method of silicon-based photochromic elastomer containing naphthol pyran with cross-linked structure
InactiveCN103172878BRich varietyImprove performanceTenebresent compositionsPolymer sciencePtru catalyst
Owner:NORTHEAST NORMAL UNIVERSITY
Photochromic niobium pentoxide and preparation method thereof
ActiveCN103588249BHas photochromic propertiesFast response and recoveryTenebresent compositionsNiobium compoundsFluorideAmmonia
The invention provides a photochromic niobium pentoxide and a preparation method thereof. The preparation method of the photochromic niobium pentoxide comprises the following steps: preparing an ammonium oxalate solution, preparing an ammonium niobium oxalate solution, adding ammonia water to the ammonium niobium oxalate solution in a dropwise manner for reacting to generate a white precipitate, ageing the precipitate in an oven, filtering the aged precipitate, cleaning the filtered precipitate with ultrapure water to remove fluoride ions, drying in the oven, and calcining the precipitate to obtain the photochromic niobium pentoxide material. The method has the advantages of simple operation, time saving and low apparatus conditions.
Owner:HARBIN INST OF TECH
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