1083results about How to "The synthesis method is simple" patented technology

The cellulose solution consists of ionic liquid and cellulose in the weight ratio of 3-8 to 100. The ionic liquid is ionic liquid of 1-ethyl 3-methyl imidazol acetate, 1-allyl 3-methyl imidazol chlorate, 1-allyl 3-methyl imidazol acetate or 1-butyl 3-methyl imidazol acetate. The cellulose material is insoluble wood pulp fiber. The preparation process of the cellulose solution is also disclosed. The cellulose solution is used in producing various regenerated cellulose products.

The invention provides a preparation method of a polylactic acid/nano cellulose composite material. The composite material comprises the following components in percentage by weight: 55 to 99.8% of polylactic acid, 0.1 to 15% of nano cellulose, and 0.1 to 30% of polyethylene glycol. The method comprises the following steps of: preparing a 5 to 15% an aqueous solution of microcrystalline cellulose, dripping concentrated sulfuric acid until the concentration of sulfuric acid reaches 40 to 60%, stirring and reacting for 1 to 2hours, carrying out centrifugation, ultrasound treatment and adjusting pH value to be neutral to obtain a nano cellulose suspension; dissolving polyethylene glycol, mixing with the nano cellulose suspension, stirring for 1 to 3hours at the temperature of 90 DEG C and carrying out vacuum drying to obtain a polyethylene glycol/nano cellulose comixture; and carrying out melt blending on the polyethylene glycol/nano cellulose comixture and polylactic acid for 5 to 8minutes at the temperature of 120 to 170 DEG C to obtain the composite material. The method is convenient and simple to operate, short in the time of the preparation process and solves the problem of uniform dispersion of nano-cellulose in the polylactic acid.

The invention discloses a sugar-based quaternary ammonium salt gemini surfactant, which has a general structural formula, wherein a sugar base is a glucose base; R is the long-chain alkyl of C8 to C18; X is chlorine, bromine or iodine; m is equal to 1 to 2; and n is equal to 1 to 2. A synthesis method for the surfactant is simple, comprises the steps of directly synthesizing dihalogenated glycoside and performing quaternization reaction, ensures simple synthesis process and low requirements on equipment and is suitable for industrialization. A sugar-based quaternary ammonium salt structurally has nonionic glucose hydrophilic groups and cationic bisquaternary ammonium salt hydrophilic groups. The product has the bactericidal property, antistatic behavior and hard water resistance of a cationic surfactant, relatively lower irritation, and the high performance of a gemini surfactant as the gemini surfactant, can be compounded with an anionic surfactant to realize synergism, is a multifunctional surfactant, can be widely applied to the industries of textile, papermaking, cosmetics, mining and the like, and has potential application prospect.

A dual-pore distribution silica synthesis method includes that water, silicon source and template agent are mixed, and the pH value of the mixture is regulated to 4-12, the mixture is aged for 0.5-4 days at the temperature of 40-120 DEG C, and then the mixture is filtered, rinsed, dried and roasted; the template agent is the mixture of sugar and surfactant, the weight ratio of sugar and surfactant of the template agent is 0.5-2, the molar ratio of silicon and water is 1:30-1:200, the molar ratio of silicon and template agent is 1:0.005-2. The portable pore diameter of the pore with smaller pore diameter of the dual-pore distribution silicon-aluminum material is 2-10 nm, the portable pore diameter of the pore with larger pore diameter is 10-25nm, the specific area is 400-750 m2/g, and the pore volume is 0.8-1.5cm3/g. The dual-pore distribution silicon-aluminum material can be used as absorbent and catalyst, or used as the carriers of absorbent and catalyst.

The invention provides a shape memory intrinsic type self-repairing material which is prepared from the following components: a crystal polyether or polyester diol monomer, a diisocyanate monomer, a monomer containing a dynamic covalent bond micromolecule chain extender, a rubber elastic body, a free radical polymeric ultraviolet light initiator, a multi-sulfydryl curing agent and conductive packing. If the shape memory intrinsic type self-repairing material is suffered from mechanical damage, a conductive path consisting of internal conductive packing is damaged, the resistance of the material is increased, under the action of external current, temperature rise can be resulted from the Joule heating effect of the material self, a reversible shape memory effect of the material can be excited, cracks of the material can be shrunk and closed, meanwhile after macroscopic cracking closure, the dynamic covalent bonds inside the material can recombine the material as molecular chains of a fracture surface are diffused with one another and subjected to reversible chemical reaction, at the moment, paths of the conductive packing in the material can be recovered, the resistance of the material can be reduced to an original level, the Joule heating effect can be eliminated, the temperature can be reduced to the room temperature, and the self-repairing process has the characteristics of reversibility and repeatability.

The invention relates to a preparation method of a nitrogen and phosphorus containing flame retardant agent, the nitrogen and phosphorus containing flame agent and application thereof. The preparation method comprises the following steps of: carrying out condensation reaction on phenylene diamine and aromatic aldehyde, then carrying out addition reaction with DOPO (9, 10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide) to obtain solid nitrogen and phosphorus containing flame retardant agent molecules. The preparation method has the advantages of easiness in control, good repeatability, high yield and suitability for expanded production. The obtained flame retardant agent molecules have amino groups and phenolic hydroxyl active groups and can further react with matters containing expoxy group functional groups. The flame retardant agent molecules contain nitrogen and phosphorus elements and have good expansion char forming characteristic and very good flame retardant effect in the burning process; when the flame retardant agent molecules resist the flaming of the epoxy resin, the flame retardant agent molecules can further undergo cross-linking reaction with resin, thereby increasing the glass transition temperature, the bonding strength, the mechanical property and the like of the resin; meanwhile, the flame retardant agent molecules have good flame retardant property; the limiting oxygen index of the flame retardant agent molecules is substantially increased; and the vertical burning grade of the flame retardant agent molecules reaches a UL-94V-0 grade.

The invention belongs to the field of electrochemical materials, and discloses a sulfur and nitrogen codoping graphene loaded vulcanized cobalt and nickel catalytic material and preparation and application. A metal cobalt source, a nickel source and thiourea are dissolved in a solvent, a mixture is subjected to ultrasonic stirring and mixing, later, ammonium hydroxide is added dropwise, a mixtureis stirred and mixed, then, graphene oxide is added, a mixture is subjected to ultrasonic stirring and mixing and then subjected to hydro-thermal treatment, next, centrifugal washing and freeze dryingare carried out, and a graphene loaded vulcanized cobalt and nickel composite material is obtained; and then, in a nitrogen atmosphere, calcination treatment is carried out, graphene oxide is furtherreduced to obtain the sulfur and nitrogen codoping graphene loaded vulcanized cobalt and nickel catalytic material. The synthetic method is simple, the cost is low, the energy consumption is relatively low, environmental friendliness is achieved, and the obtained product has good electrical conductivity and electrochemical catalysis performance and is suitable for actual application of a water cracked cathode and anode catalytic material.

The invention belongs to the technical field of organic photoelectric materials, and discloses a tetraphenylethylene-containing organic semiconductor material and a preparation method thereof, and application of the material in organic photoelectric devices. The tetraphenylethylene-containing organic semiconductor material is disclosed as Formula I or II, wherein R1, R2, R3, R4 and R5 can be identical or different aromatic ring derivative groups. Different modification groups can be connected to the tetraphenylethylene to regulate the electronic or hole transmission performance of the tetraphenylethylene derivatives, so that the organic semiconductor material not only can be used as a luminescent layer, but also can be used as a luminescent layer and current carrier transmission layer, thereby obtaining the electroluminescent devices with favorable photoelectric properties, simple structure and low cost; and the organic semiconductor material has wide application prospects in the fields of organic electroluminescence, organic field-effect transistors, organic solar cells and other organic electronics.

The invention discloses a preparation method for a nanometer mordenite molecular sieve with multi-stage holes. In the method, a novel cationic surfactant is used as a template agent for directly synthesizing the nanometer mordenite molecular sieve with the multi-stage holes through hydro-thermal synthesis; the raw materials for preparing the nanometer mordenite molecular sieve comprise a silicon source, the template agent, an alkali source, an aluminium source and water, and the molar ratio of the silicon source to the template agent to the alkali source to the aluminium source to the water is 1 : (0.005-1.0) : (0.3-0.7) : (0.01-0.1) : (30-200). Compared with the prior art, the preparation method has the most remarkable advantages that the novel cationic surfactant is used as a single structure-directing agent for synthesizing the mordenite molecular sieve with both the multi-stage holes and the nanometer crystalline grain size in one step, the synthetic method is simple, the repeatability is high, and the prepared mordenite molecular sieve has the advantages of high crystallinity, high purity and the like.

The invention discloses a magnetic PAFs solid-phase extracting agent. A preparation method of the magnetic PAFs solid-phase extracting agent includes allowing 3-aminopropyl triethoxy silylation ferroferric oxide to have a temperature-programmed reaction with piperazine and cyanuric chloride in the presence of N, N-diisopropylethylamine to obtain the magnetic PAFs solid-phase extracting agent. The magnetic PAFs solid-phase extracting agent and the preparation method thereof have the advantages that the prepared magnetic PAFs solid-phase extracting agent is good in dispersity and stable in core-shell structure; the preparation method is simple, low in cost, widely applicable, capable of achieving repeated material recycling, and the like; a covalent organic framework bonded to the ferroferric oxide can provide various action sites such as an inclusion interaction site, a hydrogen-bond interaction site, a pi-pi interaction site and an anion exchange site, so that the covalent organic framework has specific recognition and retention acting force on polar substances such as phenols and carboxylic acids.

The invention belongs to the field of super-amphiphobic materials and discloses a water-based fluoropolymer and silicon dioxide hybrid material and a transparent super-amphiphobic coating prepared from the same. The water-based fluoropolymer and silicon dioxide hybrid material is a hybrid material with the structural formula of P(A-r-B-r-C)-g-D; the hybrid material is prepared by polymerization reaction of water-soluble monomers A, monomers B, fluorine-containing monomers C and inorganic nano particles D at the mass ratio of 1:(0.2-20):(0.1-20):(0.1-5), wherein the end groups of the monomers B are epoxide groups, and double bonds are grafted on the surfaces of the inorganic nano particles D. The super-amphiphobic material provided by the invention can perform cross-linking reaction with the surface of a substrate in water; compared with the construction methods of traditional super-amphiphobic materials, a method provided by the invention is cheaper and more environment-friendly; besides, a super-amphiphobic interface prepared by the method has excellent super-hydrophobic and super-oleophobic properties and can meet the requirement in industrial application.

The invention relates to a method for preparing reducing sugar by catalyzing hydrocellulose, which comprises the following steps: A) adding 40 to 50 portions of ionic liquid by weight, dissolving the ionic liquid at a temperature of between 80 and 100 DEG C, and adding 2 to 3.2 portions of cellulose by weight into the ionic liquid to obtain transparent cellulose solution; B) adding 0.6 to 1 portion of water and 2 to 3.2 portions of acid functional ionic liquid by weight as a catalyst into the cellulose solution prepared in step A, and reacting the mixture for 10 minutes to 8 hours at a temperature of between 100 and 120 DEG C; and C) filtering the reaction solution obtained in step B and removing the precipitated cellulose, and separating the reducing sugar and the ionic liquid from the filtrate through an ion exchange resin column, wherein the ionic liquid is 1-butyl-3-methylimidazole chlorine salt; and the acid functional ionic liquid consists of cations containing nitrogen heterocyclic compounds and anions. The method overcomes the defects that an acid catalyst cannot be recycled after the reaction is finished and erodes equipment.

The invention discloses a non-metallocene tridentate binuclear titanium complex, a preparation method and purpose thereof in catalysis of ethylene homopolymerization and catalysis of copolymerization of ethylene and alpha-olefin and cycloolefin or dialkene. The non-metallocene tridentate binuclear titanium complex prepared by the method of the invention has the advantages of novel design, simple preparation method, mild reaction conditions, low cost of catalyst and high ethylene polymerization activity, and the activity for catalysis of ethylene polymerization is higher than 106g PE / molTi.h; and compared with a corresponding mononuclear catalyst, the complex has the advantages of good stability, long service life, less cocatalyst amount, and wide molecular weight distribution width of the obtained polymer.

The invention discloses a graphene-supported copper-nickel composite nanometer photocatalyst, and a preparation method and application thereof. Oxidized graphene modified by an organic molecule and a metal precursor are subjected to thermal recovery under an alkaline and high temperature environment so as to obtain highly disperse and uniform Cu-Ni/ graphene composite nanomaterial without using other surface active agents, and poisonous reducing agents such as sodium borohydride and hydrazine hydrate, and duplex-metal loading capacity is 10-15wt%. The preparation method provided by the invention has the advantages that a reaction condition is gentle, a synthetic process is simple and easy to operate, a reaction medium is green and the like, the synthetized product is capable of efficiently performing catalytic degradation on rhodamine b, and the graphene-supported copper-nickel composite nanometer photocatalyst has a good catalytic effect, and has a wide application prospect in fields such as sewage treatment and organic matter degradation.

The invention provides a method of applying a low metal loading catalyst for preparing glycol and propylene glycol from carbohydrate, including cellulose, starch, semi-cellulose, cane sugar, glucose, fructose, fructosan, xylose, and soluble xylo oligosaccharide. In the method, carbohydrate is taken as the raw material, the compound catalyst is composed of catalytic active components selected from one or more components from following components: highly-disperse and low-loading ruthenium, inorganic compounds, organic compounds, and complex of tungsten, or simple substance tungsten, then one-step catalytic conversion process is carried out under the hydrothermal conditions: temperature of 60 to 350 DEG C, and hydrogen pressure 0.1 to 15 MPa, and the high-efficient, high-selective and high yield preparation of glycol and propylene glycol from carbohydrate is achieved. The method takes highly-disperse and high stability low loading Ru-based catalyst as the reaction catalyst, so the usage amount of value metals is reduced, the loss of catalyst carrier is slowed down, and the recycle rate of Ru-base catalyst is increased. The catalyst has the prominent advantages of high activity, high selectivity, and very high cyclicity. Compared to other technologies, which prepare polyol from carbohydrate, the method has the advantages of simple reaction process, high efficiency, good stability of catalyst, and multi-circulation, and has very vast industrial application value.

The invention discloses a method for synthesizing quantum dots with uniform size distribution in an aqueous phase, which comprises the following steps: firstly, dissolving amphiphilic high polymers of different varieties into water so as to form regular micelles when the concentration of the high polymers in the aqueous phase is higher than the critical concentration of the high polymers; and reacting a cadmium sulfydryl composite precursor with NaHSe, NaHTe and Na2S or a thiourea precursor in pore paths of the formed micelles to synthetize quantum dots such as CdS, CdSe, CdTe and the like, and forming the quantum dots with the uniform size distribution by utilizing condensation reflux or the growth of the quantum dots in a hydrothermal reaction kettle. The quantum dots synthesized in the aqueous phase completely are good in water-solubility, and thus the quantum dots can be widely applied in biological aspects and can be widely applied to biomarkers, biological labels and probes; and in addition, the quantum dots with the uniform size distribution have excellent monochromaticity of transmitted fluorescence, wide absorption and narrow and adjustable transmitting positions.

A synthesis method of polycarbosilane capable of being used for thermosetting crosslinking comprises the following steps: taking polycarbosilane used for preparing a composite material as a raw material; placing the polycarbosilane used for preparing the composite material and an organosilan compound containing 2 to 3 -C=C- groups into a reaction vessel; adding dimethyl benzene; mixing uniformly for dissolving; adding a Si-H additive reaction catalyst; vacuumizing; carrying out replacing with high-purity nitrogen; carrying out an Si-H additive reaction under a normal-pressure or high-pressure heating condition and the protection of the high-purity nitrogen. The synthesis method is simple and convenient, and easy to implement; the product PVCS can be used for self-setting crosslinking under an inert atmosphere after being treated at 400 DEG C; the smelting outflow of PCS during heat treatment can be avoided; the ceramic yield can be improved remarkably; the polycarbosilane synthesized according to the synthesize method can be used as a precursor polymer of ceramic-based composite materials such as Cf/SiC, and SiCf/SiC.

The invention discloses a coated and modified high-nickel ternary cathode material and a preparation method thereof. With a LiNi<x>Co<(1-x)/2>Mn<(1-x)/2>O<2> material as a matrix, wherein x is smaller than or equal to 0.9 and greater than or equal to 0.6; a coating layer coats the outside of the matrix; the coating layer contains a plurality of nano metal salts and/or nano metal oxides; and the total weight of cationic metal accounts for 0.01%-10% of weight of a ternary cathode material. The preparation method disclosed by the invention comprises the following steps: firstly, dissolving a soluble aluminum salt into deionized water to obtain an aluminum salt solution; adding the LiNi<x>Co<(1-x)/2>Mn<(1-x)/2>O<2> material to the aluminum salt solution for mixing evenly to obtain paste; adding an alkaline solution which is prepared from an alkaline metal compound to the paste until the pH value is greater than or equal to 7.0; and carrying out drying, sintering, natural cooling, crushing and sieving, and then obtaining the coated and modified high-nickel ternary cathode material. According to the coated and modified high-nickel ternary cathode material, the alkalinity of a high-nickel material is lowered; the coated and modified high-nickel ternary cathode material is high in processability and excellent in cycle performance and safety performance.

The invention discloses a method for preparing multi-element co-doped three-dimensional porous graphene by a hydrothermal method. The method comprises the following steps: (a) ultrasonically stripping graphite oxide prepared by a Hummers method in a liquid phase to obtain a graphite oxide dispersion; (b) selecting an appropriate doping source to prepare a multi-element co-doped graphene material through one-step hydrothermal reaction, wherein the prepared sample layer is complete in structure, good in dispersity, high in quality and large in effective specific surface area. Compared with the prior art, the method is simple and controllable, environment-friendly in raw material and low in cost. The multi-element co-doped graphene material prepared by the method can be applied to many fields such as electrochemical energy storage, sensor, biological carrier, and catalyst.

The invention discloses a preparation method and application of a magnetic nanosilver graphene nano composite material, wherein the method comprises the following steps: (1) preparing graphene oxide by virtue of Hummers method; (2) loading ferroferric oxide on the graphene oxide by virtue of a solvothermal method to obtain a magnetic-graphene oxide composite material; and (3) loading nanosilver to the magnetic graphene oxide composite by virtue of an oxidation reduction method to obtain the magnetic-nanosilver-graphene nano composite material. The obtained magnetic-nanosilver-graphene nano composite material is good in bactericidal effect, can be magnetically separated, and is widely used in drinking water treatment and biological medicines.

The invention belongs to the technical field of medical engineering of polymer material and dust, in particular to a method for preparing magnetic temperature-sensitive composite microsphere with nuclear shell structure by adopting in-situ grafting technique. The preparation method comprises the following steps: carrying out surface modification to ferroferric oxide nano magnetic particles, leading the surface thereof to be carried with polymerisable double bonds, utilizing reversible addition-fragmentation chain transfer (RAFT) polymerization technique, carrying out in-situ grafting polymerization to N-isopropylacrylamide and hydrophilic allyl monomer on the surface of the magnetic particles to form a temperature-sensitive polymer, and obtaining the nuclear shell structure composite material with temperature-sensitive hydrophilic shell and controllable magnetothermal effect magnetic nuclear. The nuclear shell structure composite material has magnetothermal effect of ferroferric oxide, magnetic positioning capability and temperature responsiveness of the temperature-sensitive polymer simultaneously, and has wide application in fields of control release, immunoassay, memory element switches and sensors and the like. The synthesis method is simple and easy to operate, and the materials can be produced industrially, thus having good promotion and application values.

The invention discloses a method for synthesizing pure 4A zeolite, P-shaped zeolite and sodalite with concavo-convex attapulgite clay. The method is characterized by comprising the following steps: firstly, the concavo-convex attapulgite clay is calcined in high temperature; then, the calcined concavo-convex attapulgite clay is soaked by soda liquor to obtain leach liquor containing Na2SiO3; finally, an aluminum source is added into the soda leach liquor to carry out hydrothermal crystallization synthesis, and then, the pure 4A zeolite, the P-shaped zeolite and the sodalite are respectively obtained by filtration, rinsing and drying. In the method, the concavo-convex attapulgite clay is used as raw material, and the genuine 4A zeolite, the P-shaped zeolite and the sodalite are respectively obtained by calcination and soda-leach pretreatment through adjusting synthesis conditions, therefore the invention has the advantages of simple synthesis method, easily obtained raw material and low production cost.

The invention discloses glycosylated boron dipyrromethene fluorophore derivatives as well as a preparation method and application of the glycosylated boron dipyrromethene fluorophore derivatives. The method comprises the following steps: by taking glucose and glucosides thereof as action targets, connecting covalent bonds of the action targets to boron dipyrromethene fluorophore derivatives for photodynamics therapy, so that a third generation photosensitizer against cancer which can be used for targeted therapy is obtained. The dipyrromethene fluorophore derivatives containing glucose and glucosides are taken as study researches, activity study of in-vitro breast cancer-resistant cells MBA-MD-231 is expanded, a prodrug suitable for molecular targeted therapy is screened, and a foundation is laid for applying the glycosylated boron dipyrromethene fluorophore derivatives to targeted therapy of cancers. Moreover, the compound synthesis method is simple, readily available in raw materials, low in cost, few in side reactions, high in yield and simple in purification, and industrial production is promoted.

The invention provides a preparation method of a quaternary ammonium fluorosurfactant with a structural formula shown in formula (I). The method comprises the steps of: performing amidation reaction of perfluoro-nonyloxy benzenesulfonyl chloride and N,N-dimethyl propylene diamine in organic solvent 1 in the presence of basic catalyst at -20-120DEG C, separating reaction solution to obtain N-[3-(dimethylanino)propyl]-p-perfluoro-nonyloxy benzenesulfonamide solid product, dissolving in solvent 2, adding iodomethane, performing quaternary ammoniation reaction, and filtering to obtain N-[3-(p-perfluoro-nonyloxy benzenesulfonamide)propyl]-N,N,N-trimethyl ammonium iodide. The inventive method has the advantages of simple synthetic method, and high reaction yield. The aqueous solution prepared from N-[3-(p-perfluoro-nonyloxy benzenesulfonamide)propyl]-N,N,N-trimethyl ammonium iodide has low surface tension.

The present invention belongs to the technical field of nanometer materials, and particularly relates to wavelength adjustable carbon quantum dots, a preparation method and applications thereof. According to the present invention, the one-pot method (reaction kettle) is used to synthesize, the method has characteristics of simpleness, green environmental protection and low raw material prices, the reaction temperature is 140-200 DEG C, and the great industrial production prospects are provided; according to the synthesized carbon quantum dots, the inner core has a graphitized crystal lattice structure, the outer shell is a layer of amorphous carbon and contains a lot of hydrophilic functional groups, and the carbon quantum dots has good solubility and good stability in a polar solvent, and has diameter distribution of 1.5-4 nm; the fluorescence redshift of the carbon quantum dots is generated by the change of the surface functional groups; and the wavelength adjustable carbon quantum dots adopted as the novel light-emitting material has characteristics of low production cost, low biological toxicity, high light emitting efficiency, good stability, and good application prospects in optoelectronic devices and biotechnology.

The catalytic alcohol acid esterizing process features that ionic liquid in the form of A+B- is used as catalyst, where A is alkyl pyridine, imidazole and other nitrous compound; and B is TA (CF3COO), HB (C3F7COO), TfO (CF3SO3), etc. and A may be in the form shown in expression (1) and B may be in the form shown in expression (2). The present invention features that the ionic liquid has simple synthesis process and low cost, and the catalytic esterizing reaction has high selectivity, simple process, simple separation of final product from the catalyst, easy recovering, high product purity, reuse of the catalyst and easy industrial application.

The invention discloses a wear-resistant self-lubricating nylon compound material and a method for preparing the same, and belongs to the technical field of macromolecular materials. The wear-resistant self-lubricating nylon compound material comprises the following raw materials in part by weight: 100 parts of nylon, 10 to 30 parts of carbon fiber, 5 to 15 parts of polyethylene, 2 to 4 parts of compatilizer, 0.5 to 3 parts of irradiation sensitizer, 0.1 to 0.3 part of antioxidant and 5 to 15 parts of polytetrafluoroethylene. The preparation method comprises the following steps: irradiation pretreatment of carbon fibers and polyethylene, preparation of nylon/polytetrafluoroethylene/carbon fiber compound materials, irradiation crosslinking modification of nylon/polytetrafluoroethylene/carbon fiber compound materials and the like. The wear-resistant self-lubricating nylon compound material possesses excellent wear-resistant property, self-lubricating property and physical mechanical property and high size stability and heat resistance, and can be widely applied in fields of self-lubricating bearings, shaft sleeves, mechanical cams, gears, sucker rod couplings, oil-free lubricating materials and the like.

The present invention relates to one kind of monodisperse micron level spherical vaterite-type calcium carbonate, which is one kind of organic-inorganic hybridized material comprising inorganic calcium carbonate component with calcium carbonate content of 95-100 wt% and organic component of super branched polymer accounting for 3-10 wt%. The preparation process of the monodisperse micron level spherical vaterite-type calcium carbonate includes the following steps: preparing water solution of calcium salt; preparing water solution of carbonate or bicarbonate; preparing water solution of functional super branched polymer; fast mixing the water solution of calcium salt, the water solution of calcium salt and the water solution of functional super branched polymer at 5-40 deg.c via stirring; ageing for 1-24 hr; centrifugal or filtering separation, washing and stoving to obtain the monodisperse micron level spherical vaterite-type calcium carbonate.

The invention relates to a fluorenyl organic framework material, a preparation and application method thereof. A material which is provided with a framework structure shaped as a Chinese character ri and constructed by the method disclosed by the invention is taken as a new generation organic semiconductor to be applied to an organic electronic device. The structure of the material is shown in the specification. The material has the characteristics that (1) monomers are synthesized via a Grignard reaction and a Friedel-Crafts reaction, the raw material is inexpensive and the synthesis method is simple; (2) the material has high heat stability and glass transition temperature; (3) the material is good in flexibility and high in solubility; and (4) due to the accumulation effect of diaryl fluorine, the material is good in electrooptic activity. The fluorenyl organic framework material can be applied to the organic electronic field of film devices such as organic light emitting display, organic light storage, organic photovoltaic cells, organic field effect transistors and organic laser, and the like. Electroluminescent devices prepared by using the material disclosed by the invention show satisfactory results in luminance, luminous efficiency and voltage resistance stability.

The invention relates to a ferric fluorescent probe compound as well as a preparation method and application thereof. The ferric fluorescent probe compound has the structure in formula I in the specification. The preparation method comprises the following steps: mixing rhodamine B with anhydrous ethanediamine and refluxing in ethyl alcohol to prepare amide of rhodamine; protecting hydroxyl of binaphthol by chloromethyl methyl ether, reacting with N,N-dimethylformamide under the action of butyl lithium, and removing methyl of methyl ether by hydrochloric acid to obtain binaphthol with aldehyde group; finally refluxing the amide of rhodamine and the binaphthol with aldehyde group in ethyl alcohol and washing to obtain the pure ferric fluorescent probe compound. The probe compound has favorable selectivity and sensitivity for the ferric ions, is simple to treat before sample detection and free of causing toxicity to cells, and is used for detecting the ferric ions in the water environment or the biological cells.