119 results about "Nuclear structure" patented technology

The invention discovers and proposes a characteristic that interior species of phenolic resin are nonuniform in distribution in a polymerization process, and discloses a method for preparing a hollow carbon sphere by utilizing the characteristic of phenolic resin. The method comprises: (1) putting phenol into water or a solvent, adjusting the pH, then adding aldehyde and stirring at a certain temperature for a period of time; (2) adding a corrosive agent in a reaction system, stirring at a certain temperature, and selectively removing a part with a relatively low polymerization degree inside a polymer by utilizing a solubility difference of interior species for different solvents, to obtain an intermediate product, that is, a hollow sphere of phenolic resin polymer; and (3) calcining the intermediate product that is obtained in step (2) in an inertia or reducing atmosphere, naturally cooling to room temperature, and thus completing preparation of the hollow carbon sphere. The method is simple and practicable, and the prepared hollow carbon sphere is uniform in shape and controllable in dimension. Moreover, by utilizing a characteristic that the phenolic resin can be in-situ polymerized on surfaces of different nanometer particles, on one hand, a multi-layer hollow structure can be prepared in a multi-cladding and layer-by-layer corrosion manner, and on the other hand, the different nanometer particles can also be packaged in a cavity in an in-situ mode, so as to prepare a nuclear shell or egg yolk-nuclear structure. The prepared hollow carbon sphere has a potential application value in aspects of silicon-carbon negative electrode material, Li-S battery, supercapacitor, heavy metal ion adsorption, and the like.

The invention relates to a nano particle taking Fe3O4 as core, in particular to a TiO2/SiO2/Fe3O4 nano particle with nuclear structure and manufacturing method thereof. The invention solves the technical problems that nano TiO2 particle catalyst has low catalytic efficiency under natural light and is difficult to meet recovery control while remaining high catalyst activity in sewage treatment. The method includes steps of preparing SiO2/Fe3O4 solution, preparing titanium sol and mixing the prepared SiO2/Fe3O4 solution and the titanium sol. The invention adopts ferromagnetic particle as a carrier core and prepared TiO2/SiO2/Fe3O4 particle with nuclear shell structure as catalyst, and the catalyst particle has good dispersity and water-solubility and can be fully contacted with organic pollutant in sewage, thereby not only having high efficiency of suspended phase photocatalyst but also realizing magnetic control of catalyst by super paramagnetic nuclear energy, thus being effectively recovered.

A hydroxyacrylic acid emulsion with micro gel core structure is prepared through copolymerization of vinylsilane coupling agent on acrylate monomer to obtain hydrophobic micro gel cores, copolymerization of hydroxyvinyl monomer on acrylate monomer on the surface of said core to become hydrophilic shell, and preparing emulsion. A process for preparing water-soluble dual-component polyurethane used for paint is also disclosed.

A spiro [fluorene-9, 9-xanthene]-class hole transport material and application thereof are disclosed, the spiro [fluorene-9, 9-xanthene]-class hole transport material is an aromatic-amine compound using spiro [fluorene-9, 9-xanthene] as a core-shell structure, the aromatic-amine compound has one or more than 1 N nuclear structure unit, two adjacent N nuclear structure units are connected by a connecting group, the N nuclear structure unit meets the general formula F, and Rx, Ry and Rz are substitutes or connecting groups. Compared with similar products in the prior art, the spiro [fluorene-9, 9-xanthene]-class hole transport material is the aromatic-amine compound using the spiro [fluorene-9, 9-xanthene] as the core-shell structure, has higher glass transition temperature and thermal decomposition temperature, higher redox potential, and higher hole mobility and conductivity, and has great application value and broad application prospects in the field of perovskite solar cells and other organic electronic devices.

The present invention is directed to fluorescent compounds and methods of making said compounds that selectively bind to cellular RNA. The fluorescent compounds of the present invention are useful for live cell imaging applications.

The invention discloses a nuclear shell structure composite material which consists of a nuclear shell structure in which a tin based nanowire is covered by a polymer thin film, wherein the nuclear structure of the composite material is a tin based nanowire of a hollow structure, and the shell structure of the composite material is the polymer thin film which is arranged at the outer periphery of the tin based nanowire; the tin based nanowire is made of copper tin alloy, a cobalt tin alloy or a nickel tin alloy, and the polymer film is a polymethyl methacrylate thin film. The preparation method comprises the followings steps: preparing the tin nanowire by utilizing template electro deposition; preparing the hollow structure by introducing the current replacement reaction; then preparing a PMMA (polymethyl methacrylate) thin film after chambering; and finally removing a template. The lithium ion battery capacity is improved prominently by utilizing the space advantage of a three-dimensional nanowire structure, the volume expansion of tin in the charge and discharge processes is remitted by utilizing the hollow structure at the interior and the polymer thin film at the surface, the structural stability of the electrode is improved, the capacity attenuation is prevented, and a negative electrode material which is high in capacity and good in circulation performance can be obtained.

The invention belongs to the field of energy storage research and relates to a silicon-carbon negative electrode material. The silicon-carbon negative electrode material comprises a core structure and a shell structure. A buffer layer is arranged between the core structure and the shell structure. The buffer layer is tightly connected to the surface of the core structure. The buffer layer is tightly connected to the inner surface of the shell structure. The buffer layer has a porous structure with porosity of 1% to 80%. The core structure and the shell structure are tightly connected by the buffer layer so that in the whole cycle, the core structure and shell structure of the silicon-carbon negative electrode material are closely linked together. The buffer layer having the sponge porous structure can effectively absorb volume expansion of the core structure in the charging process and relieve the expansion pressure of the shell structure so that the structure of the material is stable and the silicon-carbon negative electrode material having excellent electrochemical properties is obtained.

The said microballoon is in single nuclear structure or in core-shell structure. The core material is composite of konjaku glucomannan and calcium alginate; and the shell material is chitosan-calcium alginate polyelectrolyte film. The preparation process includes dropping the mixed hydrosol of konjaku glucomannan-calcium alginate into the water solution of CaCl2 or chitosan-CaCl2; water washing and drying the microspherical matter to obtain konjaku glucomannan-calcium alginate or konjaku glucomannan-calcium alginate-chitosan microballoon. The present invention has the advantages of raised medicine slow releasing performance, easy control of medicine release, simple technological process, low production cost and easy scale production.

The invention belongs to the field of research on energy storage, and particularly relates to a silicon-carbon cathode material and a method for preparing the same. The silicon-carbon cathode material comprises core structures and shell structures. The shell structures are uniformly coated on the surfaces of the core structures, and the thicknesses h of the shell structures are smaller than or equal to 100 nm. The method for preparing the silicon-carbon cathode material includes steps of 1, preparing coating layer slurry with graphene, feeding sprayed mist in coating chambers and allowing formed particles to carry electric charge; 2, spraying components of the core structures into the coating chambers and allowing the surfaces of the components of the core structures to carry electric charge opposite to the electric charge of the particles; 3, carrying out coating reaction, to be more specific, regulating gas flow in the coating chambers and uniformly coating the particles obtained at the step 1 on the surfaces of the core structures obtained at the step 2; 4, carrying out after-treatment to obtain finished products which are silicon-carbon particles. The electrified capacity of each particle at the step 1 is Q1. The electrified capacity of each particle on the surface of the corresponding component of the corresponding core structure is Q2. The silicon-carbon cathode material and the method have the advantage that the silicon-carbon cathode material prepared by the aid of the method is excellent in performance.

The invention discloses a preparation method of a ferroferric oxide/calcium phosphate nuclear shell structure nano particle. The ferroferric oxide used as a nuclear structure is prepared by using a coprecipitation method, and magnetofluid with favorable dispersibility in water can be prepared by modifying the surface of the ferroferric oxide. A mixed solution with the molar ratio of calcium salt and phosphate of 1.0-1.6 is prepared, and the pH value of the solution is adjusted to be 1-10, and the solution is aged at low temperature to form precursor sol. The magnetofluid is uniformly dispersed into the sol to obtain the ferroferric oxide/calcium phosphate nuclear shell structure composite nano particle in the processes of drying and high-temperature sintering. The particle diameter of the composite nano particle is between 80nm and 120nm, wherein the particle diameter of the ferroferric oxide is between 8nm and 60nm. The composite particle is used for a cell regulation and bone repair project under the action of a magnetic field.

The invention belongs to the field of energy storage research, and particularly relates to a positive electrode material for a lithium-ion battery. The positive electrode material for the lithium-ion battery comprises a core structure and a shell structure, wherein the core structure adopts a secondary particle structure formed by uniformly dispersing primary nanoparticles into conductive agents and then densely stacking; the primary nanoparticles comprise at least one of nanometer lithium cobaltate, nanometer lithium manganate, nanometer lithium iron phosphate, nanometer nickel cobalt manganese, nanometer nickel cobalt aluminum, nanometer lithium nickelate, nanometer lithium vanadium oxide and a nanometer lithium-enriched cathode material; in addition, conductive networks are distributed between the primary nanoparticles, between the conductive agents and between the primary nanoparticles and the conductive agents, and the conductive networks are tightly connected with the primary nanoparticles and the conductive agents so as to ensure that the positive electrode material for the lithium-ion battery has excellent electrochemical performance.

A device structure includes: a core structure formed on a support, and a shell material formed on the core structure and surrounding at least part of the core structure. The shell material and the core structure are configured to form a quantum-well channel in the shell material.

The present invention belongs to the field of organic photoelectronic information material cy, and is especially one kind of high stability double spiro organic electronic material and its preparation process. This kind of compound contains double spiro structure module, which contains structural chain for increasing dissolubility, obstructing chromophore aggregation or increasing stability, contains non-conjugate, semi-conjugate or completely conjugate nuclear structure with four chemical bonds, and spiro center elements of C, Si or Ge. The present invention has the advantages of flexible synthesis path; effective regulation of the photoelectronic properties of the material with substituted radical, such as fluoro and dithiosulfone radical; and high configuration stability and environment stability, such as hindered amine structure. This kind of material may find their wide application in organic plate display, photovoltaic cell, field effect tube, etc.

The invention discloses a preparation method of a nickel-cobalt-aluminum ternary material precursor with a core-shell structure. The preparation method comprises the following steps: firstly, dissolving nickel soluble salt and cobalt soluble salt proportionally in deionized water to obtain a nickel-cobalt solution, and adding the nickel-cobalt solution, a complex agent A solution and a precipitantsolution together to a reactor filled with a base solution to perform reaction to form a core structure of the nickel-cobalt-aluminum ternary material precursor, wherein the core structure is nickel-cobalt hydroxide; secondly, adding a sodium metaaluminate solution, the nickel-cobalt solution, the complex agent A solution and the precipitant solution together to the reactor after the reaction isfinished to perform reaction to enable precipitates of nickel, cobalt and aluminum to form a shell structure of the nickel-cobalt-aluminum ternary material precursor on the core structure, wherein theshell structure is nickel-cobalt-aluminum hydroxide; and finally, performing aging, liquid-solid separation, washing and drying on the obtained product to obtain the nickel-cobalt-aluminum ternary material precursor with the core-shell structure.

The invention relates to a preparation method of a nanocrystal with a core-shell-shell structure, relates to a preparation method of a nanocrystal, and is used for solving a technical problem that a crystal synthesized by a conventional preparation method cannot simultaneously solve two main loss of a silicon-based solar cell. The preparation method comprises the following steps: 1, preparing a NaYF4:Er<3+> nanocrystal with a core structure; 2, preparing a NaYF4:Er<3+>@NaYF4:Yb<3+>,Tb<3+> nanocrystal with a first layer of core-shell structure; and 3, preparing the NaYF4:Er<3+>@NaYF4:Yb<3+>,Tb<3+>@NaYF4 nanocrystal with the core-shell-shell structure. The preparation method can be applied in the solar cell field.

Methods and compositions are provided for the isolation, culture and use of highly regenerative somatic mammalian cells. The cells are very small, and have an undefined nuclear structure. The cells may be isolated from fetal or adult tissues, and are found in tissue including, without limitation, fetal dermal tissue, blood, and bone marrow. The cells are characterized as expressing one or more markers selected from E-cadherin, integrin β1, CXCR4, CD90 and CD34, and may be selected on the basis of such expression patterns.

The invention relates to preparation of a catalyst, in particular to a preparation method of a composite carbon base solid acid catalyst. The preparation method comprises the following processing steps of: preparing composite resin; carbonizing; washing with water; performing suction filtration; drying; and performing sulfonation reaction. The technical scheme provided by the invention has the characteristics that: 1, the raw materials have wide sources and are readily available; according to the preparation method, a renewable biomass base is used as a raw material, i.e., carbohydrate is used as the raw material, so that the raw materials are low in cost and have wide sources; 2, after the biomass base is modified by using a cross-linking agent, carbonized resin is formed after carbonization, so that a multi-condensed-ring carbon nuclear structure matrix is more favorably formed than direct carbonation of biomass, and meanwhile, the mechanical strength and the stability of the carbonized resin are higher than those in the prior art; and 3, the carbonized resin has low probability of forming easily soluble small molecular compound in a sulfonation process, so that more sulfonic acid groups can be linked; and thus, the reusability, the catalytic activity and the acidity of the composite carbon base solid acid catalyst are greatly improved.

The present invention is a method for the detection and localization of proteins in situ. The method comprises contacting a peptide tag labelled protein with a nucleic acid aptamer that recognizes the peptide tag. The nucleic acid aptamer is functionalized such that is detectable by a variety of methods. The method allows for the detection of one or more proteins and/or protein complexes in sub-cellular and sub-nuclear structures with high specificity and also allows for the purification of such identified proteins.

The invention relates to a disposable RFID (Radio Frequency Identification) tag and a manufacturing method thereof. The disposable RFID tag structurally comprises an easily damaged layer, an antenna circuit layer and a protective layer. An antenna is directly manufactured on the easily damaged layer by adopting a thermoprinting or cold transfer technology so that the disposable RFID tag with chips or without chips can be manufactured. The nuclear structure of the disposable RFID tag with the chips is as follows in sequence: the easily damaged layer 101, the antenna circuit layer 102, a chip layer 103, and the protective layer 104. The nuclear structure of the disposable RFID tag without the chips is as follows in sequence: the easily damaged layer 101, the antenna circuit layer 102, and the protective layer 104. The structure type/structure range of the disposable RFID tag can be extended based on the two nuclear structures, for example, firstly, a surface picture and text layer is additionally arranged on the easily damaged layer 101 so that the disposable RFID tag with pictures and texts can be manufactured, and secondly, the protective layer 104 is changed into an adhesive sticker layer and a bottom paper layer is additionally arranged so that the disposable adhesive sticker RFID tag with the pictures and texts can be manufactured.

The invention discloses a preparation method of a polystyrene-acrylate core-shell composite emulsion, belongs to the emulsion preparation field, and solves the problems of adhesion resistance, poor heat resistance and the like of a thermoplastic polystyrene-acrylate random copolymer in the prior art. The preparation method is as follows: 1, weighing raw materials; 2, adding distilled water into a reactor, heating up, adding a compound emulsifier, a pH buffer and then part of a mixed vinyl monomer for emulsifying, adding part of an initiator, heating up to react until no reflux exists to obtain a seed emulsion; 3, continuing heating up, dripping off the rest of the mixed vinyl monomer, synchronously adding part of the initiator, after the dripping of the part of the initiator, keeping warm to obtain a core structure emulsion; 4, dripping a mixed acrylate monomer to the core structure emulsion, in the mixed monomer dripping process, adding part of the initiator, after dripping of the part of the initiator, adding the rest of the initiator, keeping warm, then cooling, adding ammonia water, stirring, further cooling, and filtering. The preparation method is applied in the fields of wood veneering, interior decoration, textiles and the like.

The invention provides a water-swelling delayed curing material, which comprises a curing material, a water-soluble material and an expanding material, wherein the surface of the curing material is coated with the water-soluble material to form a shell-nuclear structure. The surface of the curing material is coated with the water-soluble material to form the shell-nuclear structure so as to effectively avoid a contradiction of simultaneous expansion and curing. When the water-swelling curing material meets water, an expanding component adsorbs water to expand to extrude with a hole so as to realize early-stage blocking. Meanwhile, the water-soluble material as a shell in the shell-nuclear structure slowly dissolves after meeting water so as to generate an organic molecule which has a crosslinking function, an accelerating function is realized on the curing of subsequent curing materials and the fixing of the curing material for the expanding material, water further carries out curing reaction with the curing component, and blocking and seepage prevention are favorably finished under the joint function of the curing material, the expanding material and water.

The slow releasing microballoon with nimoldipine is in single nuclear structure or in core-shell structure. The core material consists of dispersed solid nimoldipine and konjaku glucomannan-calcium alginate; and the shell material is chitosan-calcium alginate polyelectrolyte film. The preparation process includes capillary crushing method to drop the mixed hydrosol of dispersed solid nimoldipine and konjaku glucomannan-calcium alginate into the water solution of CaCl2 or chitosan-CaCl2; water washing and drying the microspherical matter to obtain konjaku glucomannan-calcium alginate or konjaku glucomannan-calcium alginate-chitosan microballoon with medicine. The present invention has the advantages of raised bioavailability and slow release effect of nimoldipine, easy control of medicine release, simple technological process, low production cost and easy scale production.