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Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof
InactiveCN103396533AGood light and heat stabilityImprove luminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingSolubility1,3-Propanediol
The invention provides a methoxytriphenylamine-fluorene-containing copolymer, and a preparation method and application thereof, relates to an organic electroluminescent material, a preparation method and application thereof, and aims to solve the problems that the existing polyfluorene electroluminescent polymer is low in light and heat stability, blue light emitted by the material is insufficient in saturation chroma and the solubility in organic solvent is poor. The methoxytriphenylamine-fluorene-containing copolymer provided by the invention is poly[2,7-(9,9-dioctylfluorene)-alternated-N-phenyl-N-(4-methoxyphenyl)aniline]. The preparation method comprises the following steps: 1, synthesizing a monomer from 4-methoxyaniline and 1-bromo-4-iodobenzene; and 2, synthesizing the methoxytriphenylamine-fluorene-containing copolymer from 9,9-dioctylfluorene-2,7-diboronic acid cis(1,3-propanediol)ester and the monomer. The polyfluorene luminescent material has favorable light and heat stability; the solubility in organic solvent can be up to 15-35%; and the material is applied to an electrogenerated blue light device, the emitted light approximates saturated deep blue.
Owner:HEILONGJIANG UNIV
Tin selenide nano material, preparation method and application thereof
InactiveCN104692343AThe preparation process is simple and gentleReduce energy consumptionMaterial nanotechnologyEnergy inputThermal energyDrug release
The invention discloses a tin selenide nano material, a preparation method and application thereof. Tin selenide is synthesized by utilizing a simple, mild and green method, further, hydrophilic ligands are modified in an ultrasonic method and tin selenide nano-sheets with good water dispersibility are synthesized. The nano material has strong near-infrared absorption property and is capable of converting effective near-infrared laser into thermal energy; the photo-thermal conversion efficiency is up to 29.8%; meanwhile, the nano material has good photo-thermal stability and can be applied to light-heat treatment for cancer cells. Meanwhile, the nano material has big specific surface area of a two-dimensional laminated structure and higher medicine-carrying capacity; the nano medicine complex is capable of realizing medicine release effects of pH value response and photo-thermal response and can be utilized as a medicine carrier for chemotherapy of cancer cells. The nano material can be applied to photoacoustic imaging and infrared thermal imaging and realizes photo-thermal and medicine integrated treatment of imaging guidance.
Owner:FUZHOU UNIV
Copper porphyrin titanium dioxide composite photocatalyst and preparation method thereof
InactiveCN101879465AAvoid steric hindranceImprove adsorption capacityWater/sewage treatment by irradiationOrganic-compounds/hydrides/coordination-complexes catalystsDistillationPorphyrin
The invention discloses a copper porphyrin titanium dioxide composite photocatalyst and a preparation method thereof. The specific technical scheme is that: copper porphyrin as shown by the following structure is adsorbed on the surface of a pure anatase type titanium dioxide particle, and the mass ratio of the copper porphyrin to the titanium dioxide is (0.1-1):100. The preparation method comprises the following steps of: according to the mass ratio of the copper porphyrin to the pure anatase type titanium dioxide of (0.1-1):100, dissolving the copper porphyrin by using trichloromethane or dichloromethane; adding the titanium dioxide into the copper porphyrin, and fully stirring the mixture; performing reduced pressure distillation to remove a solvent; collecting the copper porphyrin titanium dioxide composite photocatalyst; and grinding and drying the copper porphyrin titanium dioxide composite photocatalyst. The copper porphyrin titanium dioxide composite photocatalyst can be synthesized simply, has stable properties, high activity and reusability, and can degrade stable organic matters.
Owner:NORTHWEST UNIV(CN)
Casting polypropylene film with controllable friction coefficient and preparation method thereof
InactiveCN104015448AHigh in active ingredientsGood compatibilityFlexible coversWrappersPolymer sciencePolypropylene
The invention discloses a casting polypropylene film with a controllable friction coefficient and a preparation method thereof, belonging to the technical field of packaging materials. The casting polypropylene film sequentially comprises a corona layer, a middle layer and a heat-seal layer with a thickness ratio of (20-30) to (50-65) to (15-20). The corona layer is made from homo-polypropylene or polypropylene random copolymer, the middle layer is made from isotactic homo-polypropylene, and the heat-seal layer comprises 90wt%-98wt% of propylene copolymer, 1wt%-3wt% of adhesion resisting agent and 1wt%-7wt% of macromolecule slip agent, namely silicone master batch. The preparation method sequentially comprises the following steps: mixing materials, extruding to form a film, cooling for shaping, measuring thickness, aureoling, trimming, reeling, performing aging treatment, and slitting. The heat-seal layer is uniformly dispersed in main body resin by the macromolecule slip agent, and the slip agent is well compatible with the main body resin due to high molecular weight, and thus a film surface friction coefficient is prevented from being changed by migration of the macromolecule slip agent due to temperature of a storage or usage environment.
Owner:永新股份(黄山)包装有限公司
Preparation method of gold/nitrogen-doped hollow carbon nanosphere core-shell material
InactiveCN106620702APromote aggregationHomogeneous self-adhesionEnergy modified materialsNanomedicineGold particlesHeat stability
The invention relates to a preparation method of a gold / nitrogen-doped hollow carbon nanosphere core-shell material, belonging to the field of biomedical materials. The preparation method comprises the steps of firstly, preparing gold sol by using a sol-gel method; secondly, coating the surfaces of gold particles with SiO2 by using an improved stober method, and then forming Au@SiO2@PDA spheres in a weak alkaline water-containing environment by means of auto polymerization of dopamine; finally, carrying out high-temperature calcination, and obtaining the gold / nitrogen-doped hollow carbon nanosphere core-shell material after NaOH is etched. The method is simple, mild and environment-friendly, and does not add additional toxicity; the prepared gold / nitrogen-doped hollow carbon nanosphere core-shell material has the particle size of about 165-175nm; as a near-infrared photothermal therapeutic agent for treating tumors, a product not only has good biocompatibility and light and heat stability, but also has the characteristic of having an internal hollow structure; after the gold / nitrogen-doped hollow carbon nanosphere core-shell material is used, the speed of particle exchange is accelerated, and the photothermal conversion efficiency is improved.
Owner:YANGZHOU UNIV
Large-load running rail dry-film lubricant
InactiveCN101586049AImprove extreme pressure performanceIncreased durabilityBase-materialsNano al2o3Room temperature
The invention discloses a large-load running rail dry-film lubricant, belonging to the single-constituent room-temperature solidification type dry-film lubricant, comprising the following constituents by weight parts: modified thermal plastic acrylic ester copolymer 30-40 parts, coupling agent 2-6 parts, nano Al2O3 0.5-4 parts, solid lubricant 55-70 parts, solvent 350-500 parts, additive 6-8 parts. The dry-film lubricant has features of good anti-friction and abrasion proofness; good extreme pressure property; no corrosion; safe use, construction and convey; accordance with environmental protection requirement; lower cost and wide application.
Owner:麻城天安化工股份有限公司
Efficient heat-resisting polyolefine composite light stabilizer, its production and use
ActiveCN101029149AEliminate catalytic cleavageAddressing Accelerated AgingPolyolefinHindered amine light stabilizers
An efficient composite heat-resisting polyolefine light stabilizer, its production and use are disclosed. The light stabilizer consists of two or above polymerized hindered amine light stabilizer mixed components 60-95wt% and metal-ion chelate component 5-40wt%, which has hindered phenol anti-oxidant structure and bis-amide metal ion chelating structure and / or oxalamide semi-hindered amine structure. It has excellent heat and ageing resistances and can be used for PE and EVA agricultural long-life thin film or functional greenhouse thin film.
Owner:广东华南精细化工研究院有限公司 +1
High-performance Ag2O/Bi2WO6 compound light catalyst and preparing method thereof
InactiveCN103418381ASimple wayAvoid secondary pollutionWater/sewage treatment by irradiationEnergy based wastewater treatmentKinetic constantRoom temperature
The invention discloses a high-performance Ag2O / Bi2WO6 compound light catalyst and a simple preparing method thereof. The method comprises the steps that AgNO3 and NaOH of equal stoichiometric ratio serve as initial reactants at room temperature under the condition of ordinary pressure, chemical depositing is performed on the surfaces of Bi2WO6 particles in a one-step mode to generate Ag2O by utilizing ultra instability of AgOH, and the Ag2O / Bi2WO6 compound light catalyst is obtained. Research results show that not only can Ag2O modification broaden the visible light absorption range of the Bi2WO6, but also the compounding probability of photon-generated carriers of a semiconductor can be effectively inhibited. Furthermore, the photocatalytic activity of the compound catalyst is obviously improved when the mass percent of the chemical element Ag is within the range of 0.2%-3.4%, when an Ag wt. % equals 0.6 %, the photocatalytic activity is optimized, and the kinetic constant of the photocatalytic activity is 4.7 times of the net Bi2WO6. Moreover, the compound light catalyst shows good reusability in degrading organic dyestuffs. The simple preparing method of the high-performance Ag2O / Bi2WO6 compound light catalyst and the reusability predict good application prospects of the compound light catalyst.
Owner:TIANJIN NORMAL UNIVERSITY
Preparing method and application of fluorescence-imaging copper-and-nitrogen-doped carbon quantum dots with dual-light-treating effect
ActiveCN106367065ARaise active oxygen levelsGood light and heat stabilityPhotodynamic therapyNanotechnologySolubilityBiocompatibility Testing
The invention discloses a preparing method and application of fluorescence-imaging copper-and-nitrogen-doped carbon quantum dots with the dual-light-treating effect. The carbon quantum dots prepared with the method can emit blue fluorescence, and meanwhile the photo-thermal effect, the photodynamic treating effect and the fluorescence imaging effect can be achieved. According to the preparing method, ethylenediamine tetraacetic acid disodium salt and copper chloride dihydrate serve as raw materials, and the copper-and-nitrogen-doped carbon quantum dots are prepared. According to the preparing method and application of the fluorescence-imaging copper-and-nitrogen-doped carbon quantum dots with the dual-light-treating effect, the raw materials are low in cost and easy to obtain and prepare, and an obtained product has the good biocompatibility and the good water solubility, can emit the blue fluorescence, has the absorbing effect and the good photothermal conversion efficiency in infrared and near infrared regions, has the photosensitization effect, and can generate reactive oxygen for photodynamic therapy under illuminating of near-infrared light. The copper-and-nitrogen-doped carbon quantum dots prepared with the method have broad application prospects in the photothermal therapy aspect, the photodynamic therapy aspect, the bioimaging aspect and the like.
Owner:GUANGXI NORMAL UNIV
Perylene double imide derivatives and preparation method and applications thereof
InactiveCN101659664AImprove solubilityGood light and heat stabilityOrganic chemistrySolid-state devicesOrganic electroluminescenceDiels alder
The invention relates to novel structural derivatives using perylene double imide as cores and applications to organic electroluminescent devices thereof, which belongs to the field of organic electroluminescent material preparation. The perylene double imide derivatives are characterized in that four harboring positions of 1,6,7,12- of perylene double imide derivatives are connected with charge transport functional groups with different structural types as well as different conjugate degree. The derivatives are synthesized by the following method; first 1, 6,7,12-four halogenated perylene double imide is used for synthetizing a perylene double imide with acetylene activity groups, and then Diels-Alder cycloaddition or C-N and C-C couplings react with cyclopentadiene ketone or arylamine with functional substituents so as to prepare target derivatives. The compounds have favorable thermal stability, stable format, solubility and unique electro-optical properties. The materials are usedfor preparing luminescent lights, change transport layer for the preparation of the layer on doping type electroluminescent devices, and the materials are expected to become favorable main red electroluminescent materials.
Owner:DALIAN UNIV OF TECH
Multi-functional bismuth selenide nanocomposite and preparation method and application thereof
ActiveCN105435248ASimple preparation conditionsEasy to makeOrganic active ingredientsEnergy modified materialsImage diagnosisImage contrast
The invention relates to the field of biomedicine, in particular to a multi-functional bismuth selenide nanocomposite and a preparation method and application thereof. The multi-functional bismuth selenide nanocomposite aims to solve the problems that the synthesis condition and process of the existing hyperthermia chemotherapy nano material are complex, the biological safety is poor, the drug loading capacity is low, the existing hyperthermia chemotherapy nano material is short of an appropriate imaging diagnosis function, the heat-light properties need to be improved, and the existing hyperthermia chemotherapy nano material is short of clinical experimental verification. The grain size of the multi-functional bismuth selenide nanocomposite is 50 nm to 200 nm, and the drug loading capacity for loading doxorubicin hydrochloride is 3% to 10%. The preparation method comprises a step 1 of preparing Bi2Se3 nanosheets; a step 2 of preparing Bi2Se3@PDA nano particle dispersion liquid; and a step 3 of preparing the multi-functional bismuth selenide nanocomposite. The multi-functional bismuth selenide nanocomposite serves as the hyperthermia chemotherapy nano material to be utilized in hyperthermia chemotherapy of a malignant tumor or serves as a CT imaging contrast agent to be utilized in CT imaging diagnosis of the malignant tumor.
Owner:HARBIN INST OF TECH
Molybdenum dioxide nano photothermal conversion material and preparation method and application thereof
ActiveCN106938857AHas surface plasmon resonance propertiesEfficient conversionMaterial nanotechnologyEnergy modified materialsThermal energyCancer cell
The invention discloses a molybdenum dioxide nano photothermal conversion material and a preparation method and application thereof. A high activity solvothermal precursor is obtained by laser ablation of high pure molybdenum in a mixed solution by combination of a liquid phase laser ablation technique and a solvothermal method; and molybdenum dioxide nano nanoparticles are synthesized by reaction under mild conditions by the solvothermal method. The prepared molybdenum dioxide nano nanoparticles have surface plasmon resonance properties, can produce strong light absorption in a near infrared band, can be used for effective conversion of absorbed light into heat so as to kill cancer cells under near infrared laser irradiation, have excellent photothermal stability and biological compatibility, and can be used for the preparation of a photothermal treatment reagent, the photothermal treatment reagent comprising the molybdenum dioxide nano photothermal conversion material is injected into a tumor site, tumor is irradiated by near infrared laser, the growth of the tumor can be effectively inhibited, and the molybdenum dioxide nano photothermal conversion material has wide application prospect in the field of tumor photothermal therapy.
Owner:NANJING UNIV OF SCI & TECH
Pure organic dye adopting multiple heterocycles and derivants thereof as conjugated unit and dye-sensitized solar cell prepared thereby
ActiveCN101570644AAchieving photoelectric conversion efficiencyGood light and heat stabilityLight-sensitive devicesSolid-state devicesSpectral responseOrganic dye
The invention provides a pure organic dye adopting multiple heterocycles and derivants thereof as a conjugated unit and a dye-sensitized solar cell prepared thereby. Multiple heterocycles of differenttypes and derivants thereof are selected to be used as the conjugated unit so that pure organic dye with broad spectral response and high mole extinction coefficient can be prepared. The absorption spectrum of the pure organic dye adopting multiple heterocycles and derivants thereof as the conjugated unit exceeds 580 nm, thereby realizing the breakthrough of absorption spectrum of dye; and the dye-sensitized solar cell prepared by the pure organic dye realizes the 5 percent of photoelectric transformation efficiency, and has favorable photo-thermal stability. The pure organic dye adopting multiple heterocycles and derivants thereof as the conjugated unit has the advantages of simple synthetic method, low cost of raw material for reaction and easy purification of target molecules.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Bi2O2CO3/PPy/g-C3N4 compound photocatalyst and preparation method and application thereof
InactiveCN106984360AImprove photocatalytic activityIncrease profitWater/sewage treatment by irradiationWater treatment compoundsSpectral responsePolypyrrole
The invention belongs to the technical field of photocatalyst materials for degrading wastewater pollutants and discloses a preparation method of a Bi2O2CO3 / PPy / g-C3N4 compound photocatalyst and application of the Bi2O2CO3 / PPy / g-C3N4 compound photocatalyst to Rhodamine B degradation under simulated sunlight. The preparation method includes: mixing a polypyrrole (PPy) doped bismuth subcarbonate (Bi2O2CO3) composite material with graphite-phase carbon nitride (g-C3N4) in an organic solvent according to the proportion, performing heating reflux, washing obtained products for several times, and performing vacuum drying to obtain the Bi2O2CO3 / PPy / g-C3N4 compound photocatalyst material. The preparation method has the advantages that the preparation method is simple and easy to achieve large-scale industrial production, the prepared compound material is stable in property and high in photocatalytic activity, the spectral response range of Bi2O2CO3 is expanded, sunlight utilization rate is increased, and the prepared compound material has a good degrading effect on organic dye Rhodamine B of certain concentration and is applicable to dye wastewater treatment.
Owner:JIANGSU UNIV
Linear organic hole transport material and preparation and application thereof
ActiveCN109265470AGood dissolution and film formationGood light and heat stabilityOrganic chemistrySolid-state devicesPerovskite solar cellThermal stability
the invention discloses a linear organic hole transport material as well as a preparation method and application thereof. According to the linear organic hole transport material, a rigid coplanar thiophene fused heterocycle serves as a parent core, the linear planar molecular structure can effectively improve the hole mobility and the conductivity, and the material has good dissolving film-formingperformance and excellent photo-thermal stability. The preparation method for the linear organic hole transport material has the advantages that the synthetic route is simple, the raw materials are easily available, the cost is low, when the prepared hole transport material is applied to a perovskite solar cell, the short-circuit light current density of a battery device reaches 22.31 mA cm<-2>,the open-circuit voltage is 1.094 V, the filling factor is 0.756, the photoelectric conversion efficiency reaches 18.45%, and therefore the efficiency of the perovskite solar cell is improved, and a wide application prospect is achieved.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY
Ultrafine protein composite nanoparticle with near-infrared photothermal effect and multi-mode imaging function and preparation method and application thereof
ActiveCN107551279AHigh relaxation rateStrong X-ray attenuation abilityEnergy modified materialsEchographic/ultrasound-imaging preparationsBismuth sulfideComputed tomography
The invention discloses a bismuth sulfide / gadolinium oxide-entrapping ultrafine protein composite nanoparticle with a near-infrared photothermal effect and a multi-mode imaging function and a preparation method and application thereof. By formulation screening and process optimization, the bismuth sulfide / gadolinium oxide albumin ultrafine composite nanoparticle with the near-infrared photothermaleffect and the multi-mode imaging function is prepared in one step. The composite nanoparticle has good physicochemical stability, photostability, biocompatibility and tumor-targeting property, can remarkably enhance near-infrared fluorescence, photoacoustic, magnetic resonance, CT (computed tomography) and thermal signals at a tumor site, and realizes multi-mode-complemented tumor diagnosis, andmoreover, the composite nanoparticle can eliminate tumors under the excitation of near-infrared light; in particular, because the grain size of the nanoparticle is less than 5.5nm, the nanoparticle can be eliminated by the kidneys, and toxic and side effects are minor; a tumor can be diagnosed and treated at the same time, and the composite nanoparticle has a great potential in realizing accuratetumor diagnosis and treatment integration.
Owner:SUZHOU UNIV
Preparation method of nylon 6 having high hygroscopicity, high dyeing property and high elasticity
InactiveCN102911366AIncrease elasticityIncrease the content of terminal amino groupsFiberPolymer science
The invention provides a preparation method of nylon 6 having high hygroscopicity, high dyeing property and high elasticity, The method is characterized by adding 50-85 parts of caprolactam, 5-8.5 parts of ring-opening agent, 0.3-6 parts of dicarboxylic acid blocking agent and 0.3-6 parts of composite amine modifier into to a reaction vessel; under the protection of nitrogen, preparing composite amine / polyamide performed polymer through ring opening, normal-pressure polymerization and reduced-pressure polymerization; adding polyether with same number of moles as the dicarboxylic acid blocking agent, preparing composite amine / polyether / polycaprolactam copolymer in the presence of a catalyst through normal-pressure polymerization and reduced-pressure polymerization; and extracting and drying to obtain the final product of nylon 6 with high hygroscopicity, high dyeing property and high elasticity. According to the invention, the method has simple process, production can be performed by using existing equipment, and nylon 6 not only has excellent physical and mechanical properties, but also has good spinnability, optical / thermal stability, elasticity, hygroscopicity and dyeing property, thus not only having enhanced dying depth and dying uniformity, but also being capable of being applied to chemical fiber, engineering plastics, membrane materials and the like.
Owner:TIANJIN POLYTECHNIC UNIV
Pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in dye-sensitized solar cell
InactiveCN101544845AHigh molar extinction coefficientAchieve ultra-efficientLight-sensitive devicesSolid-state devicesSpectral responseOrganic dye
The invention provides a pure organic dye containing conjugated units of different heterocyclic rings and derivatives thereof and application thereof in a dye-sensitized solar cell. The pure organic dye belongs to molecules of a D-phi-A structure. Segments of a donor, a phi conjugated system and a receptor are properly adjusted and controlled respectively to form the pure organic dye with wide spectral response and high molar extinction coefficient. The absorption spectrum of the pure organic dye is over 570 nanometers already close to the absorption of ruthenium dye; and when the pure organic dye is applied to the dye-sensitized solar cell, the photoelectric conversion efficiency of more than 10 percent is obtained, so the dye is the current most efficient and stable pure organic dye.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Preparation method and application of hyaluronic acid modified ruthenium nano photo-thermal material
InactiveCN108126200AEasy to prepareGood water solubilityEnergy modified materialsNanomedicineCancer cellCD44
The invention discloses a preparation method and application of a hyaluronic acid modified ruthenium nano photo-thermal material. The preparation method comprises the following steps: firstly, enabling hyaluronic acid and cysteine hydrochloride to carry out an amidation reaction so as to obtain cysteine modified hyaluronic acid; secondly, enabling the cysteine modified hyaluronic acid to react with ruthenium chloride under reaction of sodium borohydride, thereby obtaining a water-soluble hyaluronic acid modified ruthenium nano photo-thermal material. The preparation method is easy in preparation raw material obtaining, simple in process and small in environment pollution; meanwhile, the hyaluronic acid has the property of targeting cancer cells with over-expressed CD44, so that a high-efficiency photo-thermal material with a targeting function can be prepared, and the material has an application value in cancer treatment; due to targeting photo-thermal treatment of the hyaluronic acidmodified ruthenium nano photo-thermal material, the cancer cell killing rate is increased, and the material has wide application prospects in photo-thermal treatment, functional materials, tissue engineering, and the like.
Owner:GUANGXI NORMAL UNIV
Fluorinated fused ring benzothiadiazole polymer acceptor material and preparation method thereof
PendingCN113174032AImprove solubilityEasy to processSolid-state devicesSemiconductor/solid-state device manufacturingPolymer scienceSimple aromatic ring
The invention relates to a fluoro fused ring benzothiadiazole polymer acceptor material and a preparation method thereof. The fluoro fused ring benzothiadiazole polymer acceptor material comprises a fused ring benzothiadiazole central core unit, fluoro-substituted electron-withdrawing end groups and an aromatic ring connecting unit, wherein the fused ring benzothiadiazole central core is of a nitrogen bridge trapezoidal fused ring structure, the fluoro-substituted electron-withdrawing end groups are connected to the two ends of the central core, and each acceptor unit is in conjugate connection through a simple aromatic ring structure.
Owner:HKUST SHENZHEN RES INST
Novel method for efficiently synthesizing dibenzoylmethane
InactiveCN110818543ALow costHigh yieldOrganic compound preparationCarboxylic acid esters preparationSodium methoxideBenzoic acid
The invention relates to a novel method for efficiently synthesizing dibenzoylmethane. The product (dibenzoylmethane) is non-toxic, tasteless and widely used in PVC (polyvinyl chloride) plastics and ABS (acrylonitrile butadiene styrene) resins. The invention belongs to preparation of compounds containing C0 groups and only connecting carbon or hydrogen atoms, in particular relates to preparation of beta-dione. The method is characterized in that the dibenzoylmethane is prepared from methyl benzoate and acetophenone through a condensation reaction in an alkaline environment. The methyl benzoateis prepared from benzoic acid and methanol as raw materials and sulfuric acid as a catalyst through an esterification reaction. The main raw material, namely the methyl benzoate, of the target product, namely dibenzoylmethane, of the method, is prepared through a self-designed process, a catalyst, namely sodium methoxide, of the condensation reaction, is prepared according to the self-designed process, and technological conditions of the key steps of the condensation reaction for synthesizing the dibenzoylmethane are optimized. The invention provides the method for preparing the dibenzoylmethane with low raw material cost, a short condensation reaction period, few by-products, a high yield of dibenzoylmethane, complete solvent recovery and an excellent capability for improving photothermal stability of a thermoplastic resin. The condensation yield is 85%, and the crystallization yield is 95%.
Owner:SHANDONG RUIFENG CHEM
Preparation method of dibenzoylmethane and application of dibenzoylmethane in molding processing of thermoplastic resin
InactiveCN102491890ALow costThe condensation reaction cycle is shortOrganic compound preparationCarbonyl compound preparationSolventKetone
The invention which relates to a preparation method of dibenzoylmethane and an application of dibenzoylmethane in the molding processing of a thermoplastic resin belongs to a preparation of compounds containing a CO group and only connected with a carbon atom or a hydrogen atom, and especially relates to a preparation of a beta-dione. The preparation method is characterized in that: dibenzoylmethane is prepared by carrying out a condensation reaction on methyl benzoate and acetophenone in an alkaline environment, methyl benzoate is prepared by esterifying raw materials of benzoic acid and methanol with sulfuric acid as a catalyst, and the preparation method comprises two steps of the synthesis of methyl benzoate and the preparation of dibenzoylmethane. The preparation method of dibenzoylmethane provided in the invention has the advantages of low raw material cost, short condensation reaction period, less byproduct, high dibenzoylmethane yield, complete solvent recovery, and excellent improvement of photo-thermal stabilities of the thermoplastic resin. The condensation yield is 85%, and the crystallization yield is 95%. The invention provides dibenzoylmethane prepared through the preparation method and an application method of dibenzoylmethane in the molding processing of the thermoplastic resin.
Owner:SHANDONG RUIFENG CHEM
Metal chelate of short wavelength, and preparation method
InactiveCN1562987APromote generationWill not causeOrganic chemistryRecord information storageSolubilityOrganic solvent
This invention relates to short wavelength metal-chelate-alpha-(4-substituted-2-azothiazolcyclo)-beta-(4,4- dimethyl cyclohexadione) metal chelate with its structural formula as shown, where, C=carbon, N=nitrogen, R=alkyl, methyl, 1-4 carbon linear branched chain alkyl with t-butyl; M2+=Ni2+, Zn2+, Cu2+. This invention compound adsorbs short wavelength (400-500 nm), has solubility being not less than 3 wt% in much organic solvent, being suitable for forming membrane with rotating coating method with high stability, being matched with blue-green laser in working wavelength of 450-550 nm, being of organic storage medium of high thickness blue-green light recording-disc.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Cold-resistant plastic bucket and preparation method thereof
ActiveCN108822385AImprove cold resistanceImprove heat resistanceLinear low-density polyethylenePolymer science
The invention discloses a cold-resistant plastic bucket and a preparation method thereof, and belongs to the technical field of a plastic packaging container. The cold-resistant plastic bucket is characterized in that the cold-resistant plastic bucket is prepared from the components in parts by weight: 60 to 80 parts of high-density polyethylene, 15 to 25 parts of linear low-density polyethylene,10 to 20 parts of maleic anhydride grafted high-density polyethylene, 5 to 7 parts of high-polymerization-degree polyvinyl chloride, 6 to 8 parts of ethylene-vinyl acetate copolymer, 0.5 to 1.0 part of ultraviolet absorption agent, 1 to 1.5 parts of antioxidant, 2 to 3 parts of plasticizer and 5 to 7 parts of silica power; the high-density polyethylene has a density of 0.936 g / cm<3> and a melt index of 1.4 g / 10 min; the linear low-density polyethylene has a density of 0.920 g / cm<3> and a melt index of 1.0 g / 10 min. The invention reaches the technical effect of enabling the polyethylene plasticbucket to also have excellent printing performance when having cold resistance.
Owner:青岛邦德化工有限公司
Self-oxygen-supply hollow Prussian blue nanoparticle as well as preparation method and application thereof
ActiveCN113456816AGood light and heat stabilityHigh drug loadingHeavy metal active ingredientsPhotodynamic therapyDrug loading doseTumor cell apoptosis
The invention discloses a self-oxygen-supply hollow Prussian blue nanoparticle and a preparation method and application thereof. The self-oxygen-supply hollow Prussian blue nanoparticle is provided with a hollow Prussian blue nanoparticle body, hemoglobin and IR783 are loaded on a mesoporous shell layer and an internal hollow structure of the hollow Prussian blue nanoparticle body, the drug loading capacity of the hemoglobin is 61.5%-63.5%, and the drug loading capacity of the IR783 is 24.2%-27.5%. The self-oxygen-supply hollow Prussian blue nanoparticle loaded with hemoglobin and IR783 prepared by the invention can improve the condition of insufficient oxygen supply in photodynamic therapy; in addition, since the half-life period of active oxygen generated by the photodynamic therapy is very short and the active oxygen is effective only in a relatively short distance, loading of IR783 with a mitochondrial targeting function is conducted in the invention, the self-oxygen-supply hollow Prussian blue nanoparticle body loaded with hemoglobin and IR783 is conveyed to mitochondria, so a mitochondrial function is destroyed, photodynamic therapy effect is remarkably improved, and tumor cell apoptosis is promoted.
Owner:HUAQIAO UNIVERSITY
Liquid crystal composition having good light and heat stability and liquid crystal display element
ActiveCN106147791AGood light and heat stabilityLarge dielectric anisotropyLiquid crystal compositionsNon-linear opticsDielectric anisotropyHeat stability
Owner:JIANGSU HECHENG DISPLAY TECH CO LTD
Nanoparticle photothermal conversion material based on coordination of iron and dopamine and preparation method and application thereof
ActiveCN111298141AImprove light-to-heat conversion efficiencyReporting simplificationEnergy modified materialsGeneral water supply conservationNanoparticleMetal-organic framework
The invention belongs to the technical field of photothermal conversion materials, and discloses a nanoparticle photothermal conversion material based on coordination of iron and dopamine and a preparation method and application thereof. The preparation method comprises the following operation steps of: firstly, preparing a nanoscale iron-based metal organic framework by using a hydrothermal synthesis method; and then combining the dopamine in the nanoscale iron-based metal organic framework through the action of a coordination bond by virtue of a coordination effect of phenolic hydroxyl on the dopamine and the iron on the iron-based metal organic framework, so as to obtain the nanoparticle photothermal conversion material based on coordination of the iron and the dopamine. The material can be well applied to photothermal therapy drug preparation, photoacoustic imaging, nuclear magnetic imaging, drug loading or functional modification.
Owner:HUNAN UNIV
Room temperature aqueous phase synthesis method of multi-functional Prussian blue nanocubes
InactiveCN108159437AGood biocompatibilityGood biological stabilityEnergy modified materialsEchographic/ultrasound-imaging preparationsSynthesis methodsBiocompatibility Testing
The invention discloses a room temperature aqueous phase synthesis method of multi-functional Prussian blue nanocubes. The method comprises dissolving plant polyphenol in purified water, adding a ferric ion solution into the solution, carrying out uniform mixing, slowly adding the ferrous cyanide solution into the solution drop by drop, and carrying out stirring at the room temperature for a reaction for 5-60min to obtain the Prussian blue nanocubes with uniform sizes and excellent biocompatibility and stability. Through use of the reduction and complexing effects of external plant polyphenol,the functions of the Prussian blue nanoparticles are developed so that the multi-functional Prussian blue nanocubes are obtained. Through research on the in-vitro imaging of the multi-functional Prussian blue nanocubes, the results show that the material has a good application prospect in the multi-mode bio-imaging. The method has simple and mild conditions, low energy consumption and a short preparation period, is easy to realize and is an ideal method for preparing multi-functional Prussian blue nanocubes.
Owner:NANJING UNIV OF POSTS & TELECOMM
Au@Se@Pt-Ce6 nano composite probe and preparation method thereof
ActiveCN110038128AEasy to prepareThe preparation method is safeInorganic active ingredientsPhotodynamic therapyNanoparticlePhotothermal conversion
The invention provides a preparation method of an Au@Se@Pt-Ce6 nano composite probe. The method comprises the following steps: (1) preparing Au nanoparticles, uniformly mixing an Au nanoparticle solution with a surfactant solution at 20-40 DEG C, adding a selenium source and ascorbic acid for reaction so as to obtain an Au@Se nanoparticle solution; (2) adding a Pt ion solution for reaction to obtain an Au@Se@Pt nanoparticle solution; and (3) modifying Ce6 in the Au@Se@Pt nanoparticle solution to obtain the Au@Se@Pt-Ce6 probe. The Au@Se@Pt-PAH-Ce6 nano composite probe synthesized by the methodhas good photothermal conversion performance, photodynamic treatment effect, photoacoustic imaging and thermal imaging capability, can be applied to photothermal treatment, photodynamic treatment andimaging for tumor cells, and has good application prospect in the aspect of multimodal imaging diagnosis and treatment of tumors.
Owner:NANJING UNIV OF POSTS & TELECOMM
Luminescent probe with visual recognition effect for benzene steam as well as preparation method and application of luminescent probe
InactiveCN104194769AEasy to detectHigh sensitivityFluorescence/phosphorescenceTenebresent compositionsBenzene vaporChlorobenzene
The invention discloses a luminescent probe with a visual recognition effect for benzene steam as well as a preparation method and an application of the luminescent probe. The probe is a complex prepared from platinum (II), a 3, 8-bi(trimethylsilylacetylene)-1, 10-phenanthroline ligand and an auxiliary 4-chlorophenylacetylene ligand. When the probe is not in contact with benzene vapor, emission peaks of the probe are located at the wavelength positions of 543nm and 581nm under the excitation of light with the wavelength of 250-500nm, and the light is yellowish green. When the probe is in contact with the benzene vapor, an emission spectrum is subjected to bathochromic shift to a position near the wavelength of 630-660nm, and the color of the emitted light is remarkably changed from yellowish green to bright red. The probe disclosed by the invention not only has high sensitivity and high selectivity for the benzene vapor, but also has the advantages of high analysis speed, good repeatability, visualization, low detecting cost and simple detecting method so as to have a high application value in the field of environment detection. The probe has good reversibility, so that the performance of the probe is not influenced after the probe is repeatedly used.
Owner:DALIAN UNIV OF TECH
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