16results about How to "Simple synthesis path" patented technology

The invention relates to the technical field of silicon-based anode materials, in particular to a method for reducing structural deformation and damage in the circulation process of a silicon-based anode. The preparation method comprises the following steps: adopting Ti < 3 > C < 2 > T < x > MXeneamp; the SGC composite material is used as a silicon-based anode active material; the Ti < 3 > C < 2 > T < x > M < X > eneamp; the preparation method of the SGC composite material comprises the following steps: (1) dispersing nano silicon into phenolic resin, then enabling the nano silicon and graphene oxide to be adsorbed and self-assembled to form gel by utilizing a surface charge adsorption effect, and then performing freeze drying, grinding, carbonization treatment and CVD treatment to obtain the SGC composite material; (2) the surface of the SGC composite material is coated with the Ti < 3 > C < 2 > T < x > MXene nanosheets in a vacuum suction filtration mode, and Ti < 3 > C < 2 > T < x > MXene amp is obtained; the invention discloses an SGC composite material.

The invention relates to a synthesis method and application of a double-layer thermochromic deformation hydrogel, according to the double-layer thermochromic deformation hydrogel, CMC is adopted to perform mechanical enhancement on original PNIPAm, LAP is adopted to perform photo-initiation on a monomer, and the price of CMC and LAP is far lower than that of functionalized silicon dioxide nanoparticles and AIBA in the prior art under the same usage amount. Meanwhile, drugs used in the process are free of volatility and corrosivity, and the safety degree is higher than that of acrylic monomers used in the prior art. Besides, the use temperature of a hydrogel device in the prior art is 60 DEG C and is high, while the double-layer temperature-sensitive hydrogel in the invention can be curled only at 40 DEG C, so that the hydrogel has more advantages in temperature. By adding CMC, the volume change of the hydrogel in the heating process is remarkably reduced, meanwhile, the mechanical property of the hydrogel is greatly improved, the mechanical property of the hydrogel is further improved through impregnation of zirconium ions, and the hydrogel has a wider application scene.

The invention relates to a high-strength antibacterial spandex fabric and a preparation method thereof, and belongs to the technical field of functional textile materials. The spandex fiber comprises a spandex fiber matrix and a functional polymer layer grafted on the surface of the matrix through a covalent bond, and the functional polymer layer is a polymer of an unsaturated derivative of natural phenolic acid and is prepared by introducing carbon-carbon unsaturated bond groups such as acryloyloxy and the like into the natural phenolic acid through esterification or etherification. During preparation, the spandex fiber is subjected to plasma pretreatment, and then the spandex fiber and the natural phenolic acid-containing unsaturated derivative monomer are subjected to thermal initiation or photo-initiation graft polymerization to form the functional layer. The lasting and stable antibacterial function is achieved through covalent bond grafting, the natural phenolic acid derivative endows the fiber with the environment-friendly and non-dissolution type antibacterial property, the functional layer can improve the modulus and breaking strength of the fiber, the intrinsic elasticity of spandex is considered, the comfortable fitting characteristic of the composite fabric is reserved, and the composite fabric is endowed with the high strength and the antibacterial function.

This invention provides an endoplasmic reticulum-targeted single-chain cyclic poly(β-amino ester), its preparation method, and its applications. The structural formula of the endoplasmic reticulum-targeted single-chain cyclic poly(β-amino ester) is as follows. The endoplasmic reticulum-targeted single-chain cyclic poly(β-amino ester) exhibits excellent affinity for DNA, and the complex nanoparticles formed with DNA are uniformly distributed, stable, biodegradable, and biocompatible. The endoplasmic reticulum-targeted single-chain cyclic poly(β-amino ester) and DNA can be efficiently taken up by cells, exhibiting excellent endoplasmic reticulum targeting performance. It can overcome the limitations of gene retention in lysosomes and nuclear internalization of the complex nanoparticles, enabling efficient delivery of DNA and mRNA.

The invention discloses an organic fluorescent probe EDA-ATPM for detecting quizalofop-p-ethyl as well as a preparation method and application of the organic fluorescent probe EDA-ATPM, and belongs to the technical field of organic synthesis and analytical chemistry. The organic fluorescent probe EDA-ATPM is a compound of ethylenediamine bridged tetraphenylimidazole derivatives, the chemical name of the organic fluorescent probe EDA-ATPM is 1, 2-(pyridine-4-(1, 4, 5-triphenyl-1H-imidazolyl-2-yl)) acetamido ethane, and the molecular formula of the organic fluorescent probe EDA-ATPM is C58H48I2N8O2. KI is used as a catalyst in a nitrogen atmosphere, and 4-(1, 4, 5-triphenyl-1H-imidazolyl-2-yl)-4-(2-pyridine-4-(1, 4, 5-triphenyl-1H-imidazolyl-2-yl)-4-pyridine-4-(1, 4, 5-triphenyl-1H-imidazolyl-2-yl)-4-pyridine-4-( The preparation method comprises the following steps: adding 1, 2, 5-triphenyl-1H-imidazolyl-2-yl) pyridine and 1, 2-chloroacetamido ethane into dry acetonitrile, stirring, refluxing and reacting, filtering a reactant after the reaction is finished, concentrating filtrate under reduced pressure, and separating a light green solid product, namely the organic fluorescent probe EDA-ATPM, by virtue of rapid column chromatography; the organic fluorescent probe EDA-ATPM can form a complex with quizalofop-p-ethyl in a dimethyl sulfoxide-water mixed solution, so that the fluorescence intensity is enhanced, and the organic fluorescent probe EDA-ATPM can be used as an ideal rapid quizalofop-p-ethyl detection fluorescent probe.

The invention relates to a synthesis method of 5, 6-dimethoxy isoindoline hydrochloride. The synthesis method comprises a compound formula (I), a compound formula (II), a compound formula (III) and a compound formula (IV). The specific synthesis route is as follows: # imgabs 0 #: Friedel-Crafts acylation of formaldehyde is performed on a compound shown in a formula (I) in the step 1) under the condition of a reaction solvent, dihalide is generated in the presence of a hydrogen halide solution, and a compound shown in a formula (II) is obtained; 2) reacting the compound as shown in the formula (II) with an amine reagent, potassium iodide and alkali in the presence of a reaction solvent to obtain a compound as shown in a formula (III); and 3) reacting the compound as shown in the formula (III) with chloroformic acid-1-chloroethyl ester in the presence of a reaction solvent for debenzylation to obtain a compound as shown in a formula (IV). The method has the advantages that the synthesis path is simple, the reaction process is controllable, and the difficulty of generation of byproducts and subsequent purification is reduced. The yield and the purity of the target product are remarkably improved by accurately controlling the reaction conditions and the molar ratio; the raw materials used in the technological process are cheap, an expensive palladium catalyst is not used, the cost is remarkably reduced, and the method is suitable for the requirements of large-scale industrial production.

The invention relates to a lithium-sulfur battery electrolyte capable of inducing generation of S3 <.-> free radicals, a preparation method of the lithium-sulfur battery electrolyte and a lithium-sulfur battery, an electrolyte additive tetra-n-octyl ammonium chloride ((C8H17) 4NCl) is introduced into the electrolyte to promote generation and stabilization of the S3 <.-> free radicals, and the lithium-sulfur battery electrolyte comprises a lithium salt, an ether solvent and an additive; the additive is tetra-n-octyl ammonium chloride, the concentration of the tetra-n-octyl ammonium chloride is 20-200mmol / L, and the electrolyte can be used for assembling a lithium-sulfur battery. Compared with the prior art, the lithium-sulfur battery electrolyte is prepared by introducing tetra-n-octyl ammonium chloride, the solvation structure of the electrolyte is changed, the conversion kinetics of sulfur is enhanced, the formation of S3.-free radicals is promoted, and the stability of the S3.-free radicals is improved, so that the uniform growth of a solid electrolyte interface in the charging and discharging process of the lithium-sulfur battery is promoted; in addition, the synthesis path of the electrolyte is simple, and the manufacturing cost of the battery is reduced.

The invention discloses a method for synthesizing functional polyether in a multi-proton system, which comprises the following steps: mixing an epoxy monomer, an amino alcohol / acid compound, organic alkali and alkyl boron for polymerization reaction to obtain carbamate / amide / oligopeptide functional polyether. According to the invention, the hydroxyl is preferentially activated in a multi-proton system by utilizing an acidic reversal phenomenon of an NH type proton group and the hydroxyl in a double-component organic catalytic system, so that a polymerization reaction is only carried out at a hydroxyl / carboxyl terminal; and finally, carbamate / amide / oligopeptide functional polyether with controllable molecular weight and a clear end group structure can be synthesized in a site selective manner through a one-step reaction, and the method is simple, convenient, efficient, controllable and suitable for large-scale industrial application.

The invention discloses an iridium-zinc ultrathin nanosheet material. The thickness of a nanosheet of the iridium-zinc ultrathin nanosheet material is 5-20 nm; the atomic number ratio of Zn to Ir in the iridium-zinc ultrathin nanosheet material is (11.5-4.9): 1; the material has a rich crystalline / amorphous phase heterogeneous interface. The invention also discloses a simple preparation method of the iridium-zinc ultrathin nanosheet and application of the iridium-zinc ultrathin nanosheet in an oxygen evolution electrode material. The performance of the iridium-zinc ultrathin nanosheet material is superior to that of a commercial precious metal iridium oxide material.

The invention discloses a preparation method of a sericin-based bio-based flame retardant and application of the sericin-based bio-based flame retardant to cellulose fabrics, and belongs to the field of textile assistants. The method comprises the following steps: dissolving waste sericin with hydrochloric acid to prepare a bio-based amino acid solution; a boron-containing monomer pentaerythritol diborate is prepared through an organic synthesis reaction, then the boron-containing monomer pentaerythritol diborate and amino in a bio-based amino acid solution are subjected to a substitution reaction to prepare a bio-based flame retardant, the flame-retardant effect is remarkably enhanced through a boron and nitrogen synergistic flame-retardant mechanism, and the flame-retardant cotton fabric which is environmentally friendly, excellent in flame-retardant performance and good in washing resistance is prepared. The preparation method of the flame retardant is simple, convenient and efficient, cyclic utilization of resources is effectively promoted, and the prepared flame-retardant cellulose fabric has wide application prospects in the fields of vehicle interiors, clothes and furniture.

The present application relates to the technical field of synthetic biology, in particular to a novel taxane acetyl hydrolase, nucleic acid molecule, biological material and application thereof. The acetyl hydrolase comprises at least one of the following sequences: the amino acid sequence of the enzyme shown in SEQ ID NO. 1, SEQ ID NO. 9, SEQ ID NO. 16, SEQ ID NO. 19, SEQ ID NO. 21, SEQ ID NO. 24 or a protein with the same function obtained by substitution and / or deletion and / or addition. The above-mentioned biological enzyme has stronger site selectivity and more controllable product spectrum, has clear regional selectivity for taxane acetyl hydrolysis, can reduce excessive hydrolysis and by-products caused by chemical hydrolysis or non-specific esterase, and has important value for green manufacturing application of taxane.

This invention provides a method for preparing a three-dimensional textured macroporous carbon composite with adjustable carbon shell morphology, comprising the following steps: S1, dispersing a phenolic prepolymer in a solvent to prepare a phenolic prepolymer slurry; S2, adding graphene oxide to the prepared phenolic prepolymer slurry, mixing well, and preparing a carbon precursor spraying liquid; S3, spraying the prepared carbon precursor spraying liquid onto a planar fiber carrier to obtain a carbon precursor carrier composite; S4, heat-treating the carbon precursor carrier composite to obtain three-dimensional hollow porous carbon. This invention uses planar fiber materials as the reaction site, eliminating the need for other templates, and uses graphene oxide as the key component of the carbon precursor. Combining the advantages of continuous operation technology such as ultrasonic dispersion and atomized spraying, the carbon precursor is composited on the surface and interior of the carrier. After heat treatment, three-dimensional hollow porous carbon is prepared. The morphology of the carbon shell composited on the three-dimensional textured macroporous carbon framework can be controlled simply by adjusting the content of the key components in the carbon precursor.

The invention relates to a surface treatment method of an O3-type nickel-based sodium ion battery positive electrode material, a positive electrode material and a battery, the O3-type nickel-based sodium ion battery positive electrode material is placed in an organic acid for reaction, then sintering treatment is performed, and the positive electrode material after surface treatment is obtained; the chemical general formula of the O3 type nickel-based sodium ion battery positive electrode material is Naa [NibMncMed] O2 + e, and Me is one or a combination of more of transition metals Ni, Fe, Mn, Co, Ti and Cr; a, b, c, d and e respectively correspond to the molar ratio percentages of the elements; a is larger than or equal to 0.8 and smaller than or equal to 1, b is larger than or equal to 0.3 and smaller than or equal to 0.9, and c is larger than or equal to 0 and smaller than or equal to 0.5, 0lt; d < = 0.33,-0.02 < = e < = 0.02; the organic acid is at least one of benzoic acid, acetic acid, citric acid, decanoic acid and tartaric acid; the O3 type nickel-based sodium-ion battery positive electrode material with a stable surface structure can be obtained on the basis that the electrochemical performance of the material is not affected, the battery positive electrode material treated in the manner can be applied to batteries, and the cycling stability and the rate capability are improved.

The invention belongs to the technical field of fluorine chemical industry, and is particularly related to 2,3,3,3-tetrafluoropropylene and its synthesis method and synthesis device. The synthesis method of 2,3,3,3-tetrafluoropropylene of the present invention: first, triphenylmethylphosphonium halide is reacted with sodium hydride or sodium metal in a solvent environment to prepare a methylene triphenylphosphine solution, and then the treated methylene triphenylphosphine solution is reacted with trifluoroacetyl fluoride to generate a crude product of 2,3,3,3-tetrafluoropropylene, and finally the crude product of 2,3,3,3-tetrafluoropropylene is treated to obtain 2,3,3,3-tetrafluoropropylene. The present invention also provides its synthesis device. The present invention provides a synthesis method of 2,3,3,3-tetrafluoropropylene, simple process, low energy consumption, high reaction conversion rate, high purity and high yield of the synthesized 2,3,3,3-tetrafluoropropylene, and the 2,3,3,3-tetrafluoropropylene synthesis device adopted is simple to operate.

A preparation method of a modified LiFePO4 composite positive electrode material belongs to the field of electrochemical energy storage of lithium ion battery composite positive electrode materials, and adopts carbon fiber (CF) as a carbon source and graphene quantum dots (GQDs) as a conductive reinforcing agent to be embedded between LiFePO4 and CF, a solvothermal method is adopted to synthesize an LFP-coated GQDs material, CF is introduced as a carbon layer during high temperature sintering, and the modified LiFePO4 / GQDs composite positive electrode material is prepared. According to the invention, the GQDs are added into the LiFePO4 composite material, so that the conductivity of the LiFePO4 is greatly improved, the prepared material has more surface defects and larger specific surface area, the electronic conductivity and ion diffusion rate of the LiFePO4 are improved by the excellent conductivity and quantum effect of the GQDs, and the prepared LFP (at) GQDs (at) CF composite material shows excellent rate capability and long cycle stability.

The invention provides a nano-composite with a function of recovering HMGB1 stimulating activity by removing active oxygen and a preparation method and application of the nano-composite, and the nano-composite can recover the stimulating activity of high mobility protein 1 (HMGB1) and maintain the function of T cells by removing excessive active oxygen after cold-heat composite ablation operation, so that the preparation method and application of the nano-composite can be used for preparing the high mobility protein 1 (HMGB1). The nano drug-loading platform for promoting smooth proceeding of immune death of tumor cells is prepared by wrapping an immunologic adjuvant with a drug-loading molecule R1P or R1PR2 through a nano coprecipitation method, and the R1PR2 drug-loading molecule has a fluorescence imaging function at the same time. The invention provides a method for preparing the drug-loading molecule and the nano drug-loading platform, and an application of the drug-loading molecule and the nano drug-loading platform in tumor treatment. The polythioether group in the drug-loading molecule can relieve the oxidative stress environment of the microenvironment, can change the configuration at a fixed point in the presence of active oxygen, and has the active oxygen response capability.