110results about How to "Wide potential application value" patented technology

The present invention relates to a polymer composite material with bidirectional shape memory effect and its preparation method. It is characterized by that said polymer composite material is made up by using polymer material with shape memory function and elastric material which can be actively reverted through a certain superimposing and binding process. Said polymer composite material has bidirectional shape memory effect. The shape memory reversion temperature range of said polymer composite material is large, the different shape memory polymers can be selected and used, the bidirectionalshape memory function with different shape reversion temperature can be obtained. The bidirectional shape memory property also can be obtained by regulating thickness of shape memory polymer and thickness of elastic material. Besides, said polymer composite material has good corrosion resistance, electroinsulating property and heat-insulating effect.

The present invention provides a fine finishing of nonmetalic mineral resource and inorganic chemical industry field, characterized in that natural attapulgite clay is produced to sizing agent which solid content is about 10% after being pretreated by hydrochloric acid, a certain quality attapulgite clay and cerous salt are mixed to dissolve in the de-ionized water, the solution is evenly blended by electric mixer, wherein Ce3+ relative to the concentration range of solution is 0.001mol / l-0.5mol / l, the concentration range of the attapulgite clay is 2-50g / l; further adding a certain quality HMT, and mixing evenly, mol ratio of HMT and cerous salt is between 2:1-20:1; the blended solution is placed in the 70-100 Celsius water bath to react 1-5h under the mixing of the electric mixer, removing and cooling to the room temperature, calcining 1-5h under the temperature 200-700 Celsius after filtering, washing and drying, attapulgite powder loading nanometer cerium oxide is obtained. The attapulgite powder of the invention has a homogeneous load, better dispersivity, has no complex equipment, and less chemical material sorts, lower cost and better experiment repeatability.

The invention provides a self-assembly zinc oxide hollow sphere and a preparation method thereof, relating to a method for preparing an inorganic nanometer material. The invention provides the self-assembly zinc oxide hollow sphere and the preparation method thereof. The self-assembly zinc oxide hollow sphere is wurtzite structure zinc oxide with the JCPDS number of between 36 and 1,451, and is assembled by a laminated nanometer structure with the dimension of between 1 and 2 mu meters, wherein the diameter of the hollow sphere is between 5 and 20 mu meters, and the wall thickness of the hollow sphere is between 0.5 and 2 mu meters. The method comprises the following steps: dissolving zinc nitrate hexah and urea in mixed solvent comprising glycol and deionized water; preparing precursor solution after stirring and dissolving; placing the precursor solution in an airtight high-pressure reaction kettle, and placing the high-pressure reaction kettle in an electrothermal constant-temperature air-blowing drying oven for solvent thermal reaction; cooling the high-pressure reaction kettle to room temperature after the solvent thermal reaction, opening the high-pressure reaction kettle, filtering, washing and drying the reaction product to obtain basic zinc carbonate precursor; and placing the basic zinc carbonate precursor in a tube type heat treatment furnace for thermal treatment.

The invention provides a rhodamine fluorescent molecular probe using a quinoline derivative as an identification group and a synthesis method thereof, and relates to a rhodamine fluorescent molecular probe and a synthesis method thereof, solving the problem that the existing rhodamine fluorescent probe molecules based on the quinoline derivative identification group are few. A structural formula of a fluorescent molecular probe is as shown in specifications. A preparation method comprises the following steps: 1, preparing reaction liquid; and 2, adjusting the pH value of the reaction liquid, carrying out spin-drying and performing silica gel column chromatographic separation to obtain the rhodamine fluorescent molecular probe using the quinoline derivative as the identification group. A structural formula of another fluorescent molecular probe is as shown in specifications. A preparation method comprises the following steps: 1, preparing an intermediate rhodamine B hydrazide; and 2, dissolving the intermediate rhodamine B hydrazide and a quinoline-2-aldehyde derivative into absolute ethanol, refluxing under the protection of nitrogen, carrying out spin-drying and performing silica gel column chromatographic separation to obtain the rhodamine fluorescent molecular probe using the quinoline derivative as the identification group. The rhodamine fluorescent molecular probe disclosed by the invention is applied to the field of fluorescent imaging detection of metal ions in biological tissues and cell microenvironments.

The invention provides a gallium nitride nanowire and a preparation method thereof. The preparation method includes: under atmospheric pressure, chemical vapor deposition of elemental gallium, gallium oxide and an ammonia gas containing gas is carried out on a substrate loaded with a catalyst for preparation of the gallium nitride nanowire. The gallium nitride nanowire prepared by the preparation method has a periodic structure, and controllable morphology and sizes. The prepared gallium nitride nanowire having the periodic structure, compared with non periodic structure and straight gallium nitride nanowires prepared by the prior art, has more abundant exposed surfaces and improved photoelectrical properties, and has wide potential application value in the research and application of micro-nano optoelectronic devices. The preparation method is simple and easy to operate, and the use of high vacuum equipment which is a must in methods of the prior art is not needed.

The invention discloses nitrogen-doped carbon aerogel and a preparation method thereof. The preparation method of the nitrogen-doped carbon aerogel comprises the following steps: (1) preparing a trihydroxy pyridine solution, adding resorcinol, adding a formaldehyde solution after the solution is clear, and adding potassium carbonate while stirring; (2) leaving the mixture to stand to form aerogel; (3) performing solvent exchange on the aerogel by using acetone, so as to obtain trihydroxy pyridine-resorcinol-formaldehyde gel; (4) putting the trihydroxy pyridine-resorcinol-formaldehyde gel into a supercritical carbon dioxide extraction instrument, and carrying out carbon dioxide supercritical drying, so as to obtain xerogel; (5) putting the xerogel into a temperature programmed control carbonization furnace, and sintering and carburizing under the inert gas protection, so as to obtain the nitrogen-doped carbon aerogel. The preparation method has the advantages that loss of nitrogen content during the carbonization process is avoided, and the nitrogen content is easier to control as compared with the nitrogen content in the traditional doping manner in which melamine (most of which is decomposed) is adopted as a nitrogen source; the prepared nitrogen-doped carbon aerogel can be applied to the fields of supercapacitors, nonmetallic electrocatalysts, lithium ion batteries, fuel cells, lithium-sulfur batteries, and the like.

The invention discloses a quinoline acylhydrazone derivative-based fluorescence probe. A preparation method of the fluorescence probe comprises the following steps: 1, dissolving quinoline-8-carboxaldehyde in anhydrous ethanol, and adding acethydrazide; 2, stirring a mixture obtained in step 1 at normal temperature under normal pressure, and carrying out a reaction for 4-6 h to precipitate a white solid; 3, carrying out reduced pressure filtration on the solid obtained in step 2, and taking filter residues; and 4, washing the filter residues obtained in step 3 by using an alcohol solution to obtain the quinoline acylhydrazone derivative-based fluorescence probe. The quinoline acylhydrazone derivative-based fluorescence probe has the advantages of simple synthesis and easily available raw materials, has a high selective fluorescence identification effect on divalent zinc ions to make a fluorescence-free solution containing the divalent zinc ions have yellow fluorescence, can realize naked eye discrimination detection, and especially can be applied as a fluorescence probe to the detection of the zinc ions in cells.

The invention discloses application of dual-fluorophore ratio fluorescence molecular probe for non-fluorescence resonance energy transfer, and relates to application of the dual-fluorophore ratio fluorescence molecular probe. The dual-fluorophore ratio fluorescence molecular probe disclosed by the invention is designed for solving the technical problems that due to energy loss caused by energy transfer between double fluorophores when the existing dual-fluorophore ratio fluorescence molecular probes are excited, the probes are poor in fluorescence, and not high in metal ion selectivity and sensitivity. The dual-fluorophore ratio fluorescence molecular probe for non-fluorescence resonance energy transfer is used for identifying fluorescence peak quenching of Cu2+, Cu2+ to the dual-fluorophore ratio fluorescence molecular probe for non-fluorescence resonance energy transfer at the position of 474nm, while the fluorescence peak strength at the wavelength of 351nm basically remains unchanged. The dual-fluorophore ratio fluorescence molecular probe disclosed by the invention can be applied to the fluorescence imaging detection of metal ions in biological tissue and cell microenvironments.

The invention provides a rhodamine B derivative, a preparation method and application of the rhodamine B derivative serving as a fluorescent probe. The rhodamine B derivative adopts a chemical structural formula shown in the specification. The rhodamine B derivative can selectively react with bivalent copper ions, becomes red from colorless, has colorimetric fluorescence enhancement effect, can realize naked-eye discrimination and detection, and particularly realize the application to convenient detection of cupper ions in cells by serving as the fluorescent probe.

The invention provides a colorimetric probe based on naphthalimides derivative and a preparation method and an application thereof. A chemical structural formula of the naphthalimides derivative is shown as follows, the naphthalimides derivative is capable of selectively effecting with bivalent copper ion, red is turned to colourless, the naphthalimides derivative has colorimetric decrease effect, can realize naked-eye discrimination and detection, and can be taken as the colorimetric probe for conveniently detecting the copper ions in a water sample.

The invention provides a preparation method of a photocatalytic composite material, and relates to the technical field of catalysts. The preparation method comprises the following steps: (1) carryingout soaking pretreatment on plant leaves, thus obtaining template biomass; (2) mixing a molybdenum source-sulfur source water solution with the template biomass obtained in step (1), and immersing, thus obtaining a composite material precursor; (3) calcining the composite material precursor obtained in step (2), thus obtaining the photocatalytic composite material. The photocatalytic composite material is prepared from needle-like molybdenum sulfide and biomass carbon, wherein the needle-like molybdenum sulfide is loaded on the surface of the flaky biomass carbon; the content of the biomass carbon is 70 to 90 percent, and the content of the molybdenum sulfide is 10 to 30 percent. The photocatalytic hydrogen production performance of the photocatalytic composite material prepared by the invention is superior to that of a pure molybdenum sulfide material, excellent photocorrosion resistance is obtained, and the hydrogen production efficiency is just reduced by about 10 percent after circulating for thrice.

The invention discloses SnSe square nanosheets and a preparation method thereof, belonging to the technical field of preparation of nanometer materials. The preparation method comprises the following steps: uniformly mixing tin powder and selenium powder, and pressing into a pressing block; arranging the pressing block in a graphite pot, putting the graphite pot into a copper pan anode in a reaction chamber of a direct current arc discharge device, wherein a tungsten rod cathode is opposite to the copper pan anode; introducing circulating cooling water into the cooling wall; carrying out a discharge reaction in the mixed gas of argon and nitrogen, wherein the discharge voltage is 18V, the current is 80-85A, and reacting for 1-2 minutes; and passivating in an argon atmosphere, and collecting the ash black powder to serve as the SnSe square nanosheets on the inner side of the top cover of the condensation wall. The sample purity is high, the crystallinity is high, and the shape and size are uniform; any substrate, template and catalyst are not needed in the preparation process, and the method is environment-friendly; and the method is short in preparation time, low in energy consumption, low in cost and high in repeatability. The prepared product has potential application values in aspects such as solar cell conversion, holographic record and recycled lithium ion batteries.

The invention discloses a novel CRISPR Cas13a-gRNA expression vector and application thereof. The novel CRISPR Cas13a-gRNA expression vector is formed by respectively controlling expression of Cas13aand gRNA by virtue of an NF-kB specific promoter DMP and a U6 promoter; a gRNA 5' terminal of the Cas13a-gRNA expression vector is a 28nt sequence capable of targeting mRNA of a specific gene, and generated gRNA is capable of guiding binding of Cas13a proteins and cutting the mRNA of the specific gene, thereby causing expression inhibition of the specific gene. The constructed novel CRISPR Cas13a-gRNA expression vector is capable of specifically knocking down expression of cancer-promoting genes in cancer cells so as to cause growth inhibition and apoptosis of the cancer cells, but expressionand growth of target genes of normal cells are not influenced; and the expression vector can be applied to preparation of novel gene therapy reagents for cancers.

The present invention relates to a polymer composite material with bidirectional shape memory effect and its preparation method. It is characterized by that said polymer composite material is made up by using polymer material with shape memory function and elastric material which can be actively reverted through a certain superimposing and binding process. Said polymer composite material has bidirectional shape memory effect. The shape memory reversion temperature range of said polymer composite material is large, the different shape memory polymers can be selected and used, the bidirectional shape memory function with different shape reversion temperature can be obtained. The bidirectional shape memory property also can be obtained by regulating thickness of shape memory polymer and thickness of elastic material. Besides, said polymer composite material has good corrosion resistance, electroinsulating property and heat-insulating effect.

The invention relates to a naphthopyran carbazone derivative as well as a preparation method and application thereof, and belongs to the technical field of organic synthesis. The preparation method ofthe naphthopyran carbazone derivative comprises the following steps of S1, adding 3H-naphtho[2,1-b]pyran-2-formaldehyde into an organic solvent to be dissolved; then, adding carbohydrazide to obtaina mixture; S2, performing backflow stirring reaction on the mixture obtained in the S1 at normal pressure; S3, after the reaction is completed, performing cooling to room temperature; separating out solid; performing reduced pressure filtering; taking filter slag; S4, washing filter slag obtained in the step S3 to obtain the naphthopyran carbazone derivative. The naphthopyran carbazone derivativehas high sensitivity and high selectivity when being used as a ratio fluorescence probe for detecting copper ions, particularly in application of convenient detection of copper ions in cells as a fluorescence probe.

The invention provides a fluorescent probe based on pyrrole-cumarin dihydrazone derivatives as well as a preparation method and application of the fluorescent probe. The chemical structural formula of the pyrrole-cumarin dihydrazone derivatives is shown in the description. The fluorescent probe based on the pyrrole-cumarin dihydrazone derivatives is prepared by using condensation reaction; the fluorescent probe is simple to synthesize and easy for obtaining raw materials; the fluorescent probe shows higher selective fluorescence identification performance for copper ions in multiple common metal ions, thus enabling the fluorescence of a solution containing the copper ions to be significantly quenched. More importantly, the fluorescent probe also can be used for biological tissues for detecting the fluorescence imaging of the copper ions in cellular microenvironment; the fluorescent probe has the characteristics of being rapid, simple and convenient and high in sensitivity and selectivity as well as wide potential application value.

The invention discloses double-network autonomous deformation gel and a preparation method thereof. The preparation method comprises following steps: acrylamide monomers, acrylic monomers, a cross-linking agent and a water-soluble initiator are subjected to a radical copolymerization reaction in an emulsion, then the mixture is mixed with glycidyl methacrylate, and microgel containing vinyl on thesurface is obtained; the acrylamide monomers, the microgel containing vinyl on the surface and the water-soluble initiator are mixed to be injected into a die, freeze drying is performed after the radical copolymerization reaction ends, and a polymer network gel product is obtained; the microgel containing vinyl on the surface is mixed with the acrylamide monomers, vinyl metal complex monomers and a methanol solution of a photoinitiator, one end of the polymer network gel product is soaked in the mixed solution, left to stand and subjected to a polymerization reaction under ultraviolet light,a solvent is exchanged, and the autonomous deformation gel is prepared. By means of adjustment for monomer types and the like, a dynamic deformation mode is changed, and demands of different usage scenarios are met.

The invention discloses a composite neural network model and a modeling method thereof. The composite neural network model comprises a full-connection sparse modeling module, an input mapping single-layer sensor layer, a dictionary learning single-layer sensor layer and a feedback path module. The full-connection sparse modeling module is used for completing sparse modeling of a single sample in each round of iteration of the system; wherein the input mapping single-layer sensor layer is used for generating continuous external input required by the full-connection sparse modeling module, the dictionary learning single-layer sensor layer is used for realizing learning and optimization of a sparse dictionary, and the feedback path module is used for assisting the full-connection sparse modeling module to improve the sparse quality of modeling. The method has the advantages that through a full-connection working mechanism of the Hopfield neural network and a weight learning mechanism of the sensor neural network model, integrated data-driven sparse modeling and dictionary learning are realized, and a modeling result with better globality and better sparse performance is obtained.

The invention relates to coumarin thiocarbazone derivatives as well as a preparation method and application thereof, belonging to the technical field of organic synthesis. The preparation method of the coumarin thiocarbazone derivatives comprises the following steps: S1, adding 3-acetyl-7-diethylamino coumarin into an organic solvent for dissolving, and then adding thiocarbazide to obtain a mixture; S2, enabling the mixture obtained in the S1 to be subjected to a reflux mixing reaction at the atmospheric pressure; S3, after the reaction is finished, cooling to the room temperature, separatingout solid, filtering under the reduced pressure, and taking filter residue; S4, washing the filter residue obtained in the S3 to obtain the coumarin thiocarbazone derivatives. The coumarin thiocarbazone derivatives have higher sensitivity and selectivity when being used as a fluorescent probe for detecting zinc ions and copper ions.

The invention provides a fluorescence probe based on a triazole acyl hydrazone derivative and a preparation method of the fluorescence probe. The chemical structural formula of the triazole acyl hydrazone derivative is as follows. The triazole acyl hydrazone derivative provided by the invention can selectively react with aluminum ions, and weak fluorescence is changed into blue fluorescence. A colorimetric fluorescence enhancement effect is achieved, naked eye discrimination detection can be realized, and particularly an application that the triazole acyl hydrazone derivative is used as the fluorescence probe to conveniently detect aluminum ions in a cell can be realized.

The invention discloses an aza-naphthyl imide Cd<2+> probe molecule, a synthesis method therefor and an application of the aza-naphthyl imide Cd<2+> probe molecule and relates to Cd<2+> probe molecules and synthesis and application thereof. The aza-naphthyl imide Cd<2+> probe molecule is used for solving the technical problem that the Zn<2+> interference resistance of the existing Cd<2+> detecting molecule probes is relatively poor. The aza-naphthyl imide Cd<2+> probe molecule disclosed by the invention has a structural formula represented by a formula shown in the description. A preparation method comprises the steps: subjecting pyrano[3,4,5-de]quinolin-2,4,6(1H)-trione and alkylamine to a reaction in ethanol, and separating an intermediate I; subjecting the intermediate I to a reaction with phosphorus oxychloride, and separating an intermediate II; subjecting the intermediate II to a reaction with 2-amino benzylamine, and separating an intermediate III; subjecting the intermediate III to a reaction with 2-chloroacetyl chloride, and separating an intermediate IV; and finally subjecting the intermediate IV to a reaction with di(2-picolyl)amine, and separating the aza-naphthyl imide Cd<2+> probe molecule. The probe is applied to fluorescence-reinforced detection on Cd<2+> in solutions or cells.

The invention relates to a polyarylether / hydrophilic resin composite diaphragm for a supercapacitor and a preparation method of the diaphragm, which belongs to the technical field of the super-capacitor. The preparation method is characterized by comprising the steps: blending a brooethyl polyarylether solution with a hydrophilic resin solution, casting the mixed solution on a clean and tidy glass plate, and drying the glass plate in a vacuum drying box so as to form a membrane on the glass plate; and ammoniumizing and alkalizing the obtained brooethyl polyarylether / hydrophilic resin composite membrane, and cleaning the residual alkaline liquid in the membrane by utilizing deionized water to obtain the polyarylether / hydrophilic resin composite diaphragm. The supercapacitor manufactured by adopting the polyarylether / hydrophilic resin composite diaphragm prepared through the method is high in electrolyte adsorption volume, low in contact resistance, high in ion conductivity and high in mass specific capacity; moreover, the large weight and large size of the single supercapaictor caused by vast electrolyte can be avoided, the safety of the supercapacitor is improved, an assembling space can be reduced, and the potential application value is high in the fields such as electronic devices and hybrid electric vehicle.

The invention discloses an organic-inorganic two-dimensional perovskite room-temperature phosphorescent material as well as a preparation method and application thereof, and the organic-inorganic two-dimensional perovskite room-temperature phosphorescent material with long afterglow luminescence performance is synthesized by selecting an organic layer with a strong electron-donating group and an inorganic layer with a relatively strong rigid structure through molecular design. The two-dimensional perovskite room-temperature phosphorescent material disclosed by the invention has the advantages of low raw material price, simple synthesis method, capability of continuously emitting light for several seconds after an excitation light source is turned off, and the like. The material has wide potential application value in the fields of anti-counterfeiting encryption, photoelectric materials and the like, and is expected to be applied to the fields of anti-counterfeiting encryption, electroluminescent devices and the like.

The invention discloses a sensor with a gold nanoparticle and quantum dot composite structure, a system and a method. Based on the local surface plasma resonance characteristics of the gold nanoparticles under total internal reflection, the microfluid technology is combined, the gold nanoparticles are directly combined with the transparent substrate, the binding force is strong, the thickness is accurate and controllable, the continuity is good, no pollution is caused, in addition, the optical property of the gold film is excellent, and the sensitivity and the accuracy are very good. Quantum dots are inserted into gaps among gold nanoparticles to obtain a gold nanoparticle quantum dot composite structure, the surface plasma resonance effect of the gold nanoparticles is enhanced, the sensoris more sensitive to changes of parameters such as the refractive index and the thickness of the composite structure and media nearby the composite structure, and research substances attached to thesurface of the structure can be detected more easily. The sensor has the advantages of high sensitivity, high stability, no marking, no damage, high accuracy, real-time rapid detection, wide application range and the like; the sensor has a great development prospect and a wide potential application value.

The invention discloses a method for synthesizing amino-modified NIT nitroxide free radicals. The method comprises the following steps: by taking N-(2-glyoxyl) phthalimide and N,N'-dyhydroxyl-2,3-dimethyl-2,3-butanediamine as raw materials, performing three steps such as condensation, hydrazinolysis and oxidization to obtain the amino-modified NIT nitroxide free radicals. The amino-modified NIT nitroxide free radicals have wide reaction and application values, and the yield is 60 percent or higher.

The invention provides a morpholine-pyridine-merocyanine derivative fluorescent probe as well as a preparation method and application thereof. The chemical structural formula of a morpholine-pyridine-merocyanine derivative is shown in the specification. The morpholine-pyridine-merocyanine derivative fluorescent probe disclosed by the invention can selectively act with carboxylesterase (CEs) under pure water phase physiological conditions. The fluorescence color of the solution is changed from green to orange yellow, and a typical ratio fluorescence signal is presented. The invention particularly relates to application of the fluorescent probe as a CEs fluorescent probe in cell lysosome fluorescence imaging.

The invention discloses a planar battery. The planar battery comprises a current collector; and a positive electrode and a negative electrode which are arranged on the same side plane of the current collector; and the positive electrode and the negative electrode are spaced apart. The invention also provides a preparation method and application of the planar battery. The positive electrode and thenegative electrode of the planar battery provided by the invention are naturally separated on the flexible substrate, a diaphragm is not needed, and the planar battery has excellent flexibility of aplanar structure.

The invention provides a morpholine-indanone-chalcone derivative fluorescent probe as well as a preparation method and application thereof. The chemical structural formula of a morpholine-indanone-chalcone derivative is shown in the specification. The preparation method comprises the following steps: dissolving 5-hydroxy-1-indanone, 4-(4-morpholine) benzaldehyde and sodium hydroxide in an organic solvent, carrying out reflux stirring reaction, acidizing with hydrochloric acid until the pH is equal to 6, and treating to obtain an intermediate 5-hydroxy-2-(4-morpholine benzyl subunit)-2, 3-dihydro-1H-indanone; dissolving the chitosan, acetic anhydride and triethylamine in an organic solvent; stirring and reacting at room temperature to obtain the morpholine-indanone-chalcone derivative fluorescent probe. The morpholine-indanone-chalcone derivative fluorescent probe can selectively act with carboxylesterase (CEs) under the condition of 95% of water phase (containing 5% of dimethyl sulfoxide, v / v), green fluorescence is remarkably enhanced, and the morpholine-indanone-chalcone derivative fluorescent probe is particularly applied to cell lysosome fluorescence imaging as a CEs fluorescent probe.

The invention provides a fluorescent probe based on a coumarin carbazone derivative and a preparation method and application of the fluorescent probe, and belongs to the field of organic synthesis. The fluorescent probe based on the coumarin carbazone derivative can form a stable complex with Cu2+, has good Cu2+ ion recognition performance, shows significant AIEE properties in a buffer solution of2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulfonic acid (HEPES, 5*10<-3>mol / L, containing DMSO with the volume ratio of 0.5%) with the pH of 7.4 and shows high selective fluorescence recognition performance for Cu2+ ions. Through the addition of Cu2+, green fluorescence of a probe solution is almost completely quenched, the fluorescence attenuating effect is achieved, and naked-eye discriminationdetection can be achieved. More importantly, the fluorescent probe can also be used for fluorescence imaging detection of Cu2+ ions in cells, has the advantages of being quick, convenient to use, high in sensitivity, low in detection limit and high in selectivity, and has high potential application value. The structural formula of the coumarin carbazone derivative is shown in the description.