400results about How to "Single structure" patented technology

The present invention discloses lithium iron phosphate material for lithium ion power cell and its preparation process, and dissolves the technological problem of raising the discharge power and safety performance. The lithium iron phosphate material is spherical or spheroid composite particle with one base body of lithium iron phosphate and doping and modifying agent and one coating carbon layer. Its preparation process includes wet ball milling the mixture comprising lithium salt, ferric salt, phosphoric acid, doping and modifying agent and dispersant, spraying to pelletize, heating for pre-treatment, maintaining temperature, cooling, pulverizing and shaping. Compared with available technology, the present invention has the features of high crystallization, single structure, average composite particle size of 5-60 microns, specific surface area of 8.0-15.0 sq m / g, bulk density of 1.4-1.7 g / cu cm, high specific capacity, high safety, etc.

The invention belongs to the technical field of organic photoelectric materials, and discloses a spiro-di-thioxanthene-based small-molecule luminescent material and preparation and application thereof. With spiro-di-thioxanthene nucleuses as framework units, and by changing connecting units at both sides of each spiro-di-thioxanthene nucleus and the number of the spiro-di-thioxanthene nucleuses, the molecular weight, Pi conjugacy and intramolecular charge transfer properties of the small-molecule luminescent material disclosed by the invention can be regulated. A spiro-structure therein can adjust the packing method among molecules. The preparation method of the material disclosed by the invention obtains a target compound with diphenyl sulfide and thioxanthone as original reaction materials by a series of simple reactions. The material structure is uniform, and the molecular weight is determined, and the spiro-di-thioxanthene-based small-molecule luminescent material has good solubility and film-forming property in common solvents. The spiro-di-thioxanthene-based small-molecule luminescent material can be applied as a hole transport material, an electron transport material and a luminescent material in OLED (Organic Light Emitting Diode) devices to improve the performance of the devices, and has profound significance for the development of high-performance devices.

The invention relates to a method for preparing high-density spherical lithium iron phosphate for lithium ion power batteries, which is characterized by comprising the preparing processes: acid, a ferric iron resource and phosphor resource are mixed into mixed water solution; alkali is prepared into water solution; the mixed water solution and the alkali water solution are respectively and continuously introduced into a reaction kettle to carry out coprecipitation reaction, and a spherical iron phosphate precursor is synthesized; the precursor is used as a raw material and is evenly mixed with a lithium resource, a carbon resource and a doping metal compound, and then, the mixture is heated in a stove to obtain a spherical lithium iron phosphate powder material under a protective atmosphere. The spherical lithium iron phosphate powder material prepared by the method has freely controllable average grain diameter being from 4 microns to 15 microns, narrow distribution of the grain diameter tap density as higher as 1.4 g / cm<3> to 2.2 g / cm<3>, and has the characteristics of high specific capacity, rate discharge and good safety performance. The method has simple technical processes and is suitable for industrial mass production.

The invention discloses erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivatives, and a preparation method and application thereof. According to the invention, erlotinib which is a listed small-molecule inhibitor is used as a tumor target and is covalently connected to a 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene photosensitizer capable of being used for photodynamic therapy by the click reaction so as to obtain third-generation anti-tumor photosensitizers capable of being used for targeted therapy, namely, a double-erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivative and a single-erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivative. Meanwhile, by using the erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivatives as research objects and respectively using human body hepatoma carcinoma cells HepG2 and HELF (Human Embryonic Lung Fibroblast) as tested cell strains, research on in vitro anti-tumor activity of the erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivatives is developed, a prodrug suitable for molecular targeted therapy is screened out and the foundation is laid for application of the erlotinib modified 4-difluoro-4-borata-3a-azonia-4a-aza-s-indacene derivatives to targeted therapy of cancers. A synthetic method of the derivatives is simple; raw materials of the derivatives are easy to obtain and low in cost, have few side effects and high yield, are easy to purify and are beneficial to industrial production.

The invention provided an alpha-(8-quinoly) single substituted zinc phthalocyanine and a preparation method thereof, with the molecular formula of C41H21N9OZn; the preparation method is as follows: 8-hydroxyl quinoly and 3- nitrophthalonitrile are adopted as the original substances to synthesize 3-(8- quinoly) phthalonitrile; then 3-(8- quinoly) phthalonitrile, phthalonitrile, and the corresponding zinc salt are adopted as the original substances to synthesize a coordination compound of Phthalocyanine-zinc under the DBU catalysis, and then the coordination compound of Phthalocyanine-zinc is separated to obtain the final product. The coordination compound provided by the invention has a single structure without any isomer, and is characterized in defined structure and easy separation. The coordination compound can be applied in the high-tech fields such as the preparation of novel anti-cancer drugs.

A method for preparing a lithium iron phosphate anode material through solid-liquid combination comprises the following steps that a lithium source compound, an iron source compound, a phosphoric acid and phosphorus source compound and a small amount of carbonic organic precursor are weighed in proportion and mixed evenly, and then dried at a temperature of between 80 and 120 DEG C; the dried mixture undergoes ball milling inside a star-type ball-milling tank for 10 to 60 minutes so as to obtain a precursor powder material; the precursor powder material undergoes sweeping in the inert atmosphere or the reducing atmosphere for 3 to 5 minutes and then is sealed; the precursor powder material is heated to 400 to 800 DEG C at a heating rate of between 1 and 30 DEG C / min, and the temperature is maintained for 3 to 8 hours; and finally, the material is cooled down to room temperature, and is crushed to prepare lithium iron phosphate powder. Due to adopting solid-liquid combined raw materials, the method not only ensures that the raw materials are mixed more evenly, but also provides effective reducing atmosphere to synthesize the anode material with excellent electrochemical property during later sintering; moreover, a high-temperature solid-liquid combination method is adopted to reduce reaction temperature, reaction time and production cost.

The invention belongs to the technical field of photoelectric material, and concretely relates to a benzene-substituted phenothiazine unit-based luminescent material, an intermediate thereof and an organic photoelectric device made by the luminescent material. The luminescent material takes phenothiazine as an initial reaction raw material, the intermediate is prepared through an Ullmann reaction, and a target compound is obtained through the Ullmann reaction or a Suzuki reaction. The material has the advantages of single structure and definite molecular weight; has high decomposition temperature and low sublimation temperature, and the luminescent material with high purity cab can be easily obtained through sublimation. The material has good luminescence performance as a luminescent layer of the organic photoelectric device and can be used for an organic micromolecule light emitting diode.

The invention discloses a preparation method for nickel cobalt lithium manganate LiNixConMn1-x-yO2 of an anode material of a lithium ion battery, which belongs to the technical field of a novel material for energy source. The preparation method comprises the following steps of: 1, dissolving lithium source compound, nickel source compound, cobalt source compound and manganese source compound in deion water, adding complexant polyacrylic acid (PAA), and heating and stirring to obtain transparent red collosol; 2, heating and concentrating, evaporating unnecessary water to obtain red wet gel, and drying in a bake oven to obtain dried gel; and 3, carrying out calcination and heat treatment for ground dried gel in a muffle furnace to obtain powders of nickel cobalt lithium manganate LiNixConMn1-x-yO2. The method provided by the invention has the advantages of simple process, environment-protection, low energy consumption high efficiency and the like.

The invention discloses an epididymis protease inhibitor which is a functional peptide segment of Eppin. The inhibitor is any one selected from amino acid sequences shown from SEQ ID No.1 to SEQ ID No.7 and has advantages of single component, simple structure and strong pertinence of immunoreaction inspired; polypeptide with at least 80 percent of sequences the same as the functional peptide segment of Eppin can be used for constructing immunogen which can improve the immunogenicity of the functional peptide segment of Eppin, stimulate an organism to generate a specific antibody, reduce Eppin level in blood plasma and induce high-efficient, safe and reversible antifertility effect. The immunogen of the epididymis protease inhibitor can form a medicament composite with medically acceptable carriers, and the composite can be used for preparing male contraception vaccines, therefore, the epididymis protease inhibitor has broad application prospect.

The present invention discloses a method for adopting macromolecular weight polyglycol to modify growth hormone so as to obtain the modified product capable of obviously prolonging half-life period of the growth hormone.

The invention discloses an erlotinib-phthalocyanine conjugate as a molecule-targeting anticancer photosensitizer and its preparation method and use. Erlotinib structure units with alcoxyl long-chains are introduced to the periphery of a metal phthalocyanine large-ring so that amphipathy, biocompatibility and photosensitizer targeting are improved. The erlotinib-phthalocyanine conjugate is not aggregated easily, is conducive to cell uptake ratio improvement, has a single structure, has no isomers and can be purified easily. The erlotinib-phthalocyanine conjugate can improve photosensitizer targeting in photodynamic therapy and improve photosensitizer activity in photodynamic therapy. The preparation method has simple processes, less side reactions and a high yield, adopts easily available raw materials, has a low cost and is conducive to industrial production.