50results about How to "Strong absorption peak" patented technology

The invention relates to a lignin-based starlike thermoplastic elastomer and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out reaction on lignin and 2-bromoisobutyryl bromide to synthesize a lignin ATRP (atom transfer radical polymerization) macromolecular initiator; and (2) adding a hard monomer, a soft monomer, the lignin ATRP macromolecular initiator, a ligand and a good reaction solvent into a reaction bottle, fully stirring for dissolving, removing oxygen in the mixed solution by virtue of three circulating processes of freezing, vacuumizing and nitrogenization, adding a catalyst for reaction at 55-110 DEG C for 4-48 hours, filtering the collected precipitate by using a mixed liquid or methanol/water as a precipitator and drying to obtain the lignin-based starlike polymer with ultraviolet absorptivity and property of the thermoplastic elastomer. The lignin-based starlike polymer consisting of different monomers can be obtained by using the method. The mechanical property of the lignin-based starlike polymer is superior to that of a liner polymer with same compositions and the lignin-based starlike polymer can be used as a membrane material with ultraviolet absorptivity.

The invention discloses a photosensitive monomer, liquid crystal material, liquid crystal panel and manufacturing method, optoelectronic device and manufacturing method, the photosensitive monomer having a chemical formula denotation of, 'L1', 'L2', 'L3', 'L4', 'L5', 'L6' selected from hydrogen atom, fluorine atom, chlorine atom, cyano, alkylation, alkylation carbonyl, alkoxy carbonyl, alkylation carbonyl and alkylation carbonyl has 1~7 carbon atoms and at least one hydrogen atom replaced by fluorine atom or chlorine atom. 'R1', 'R2', 'R3' and 'R4' are selected from hydrogen atom, fluorine atom, chlorine atom, cyano, thiocyanato cyanide, five fluoride thiocyanato, nitrite, linear or branched alkyl chain and Z-Sp-P, and at least one of four for Z-Sp-P. 'Z' is selected from oxygen atom, sulfur atom, methoxy, carbonyl, carboxyl, amine formyl, methylthio, vinyl carbonyl, vinyl carbonylation and single key. 'Sp' is selected from linear or branched alkyl chains and single-key. 'P' is the polymerizable group.

The invention relates to a perylene anhydride type polyarylene sulfide with a tree structure, and a preparation method and application thereof, and belongs to polymer synthesis. The perylene anhydridetype polyarylene sulfide is obtained by introducing polyarylene sulfide into the structure of perylene anhydride. The obtained polyarylene sulfide has the photoelectric effect of the perylene anhydride and the excellent strength and plasticity of the polyphenylene sulfide; magneto-optic metal is further introduced to obtain the perylene anhydride type light effect multifunctional polyarylene sulfide polymer with the weight-average molecular weight of 20000-150000, the melt index of 5-500/10min, high temperature resistance (the melting point is 280-350 DEG C, and the decomposition temperatureis greater than 480 DEG C), strong absorption peak at 500-700nm, and variable magnetic property at room temperature to 200 DEG C; and the perylene anhydride type polyarylene sulfide is a novel high-temperature-resistant and high-strength flexible magneto-optical material, and has wide application.

The invention discloses a nonlinear optical crystal, which has a crystal structure the same as that of a YCa4O(BO3)3 crystal, and belongs to the field of a Cm space group and an m point group. The nonlinear optical crystal is a samarium-yttrium-calcium-oxygen borate crystal; the chemical formula of the nonlinear optical crystal is SmxY1-xCa4O(BO3)3, wherein x is more than 0 and less than 1; and the nonlinear optical crystal is obtained through a pulling method by adopting CaCO3, Y2O3, Sm2O3 and H3BO3 in stoichiometric proportion. The samarium-yttrium-calcium-oxygen borate crystal disclosed by the invention has good nonlinear optical property, can be used for manufacturing a laser nonlinear optical device and can increase the transformation and amplification efficiency of the laser nonlinear optical device by absorbing idler-frequency light with a specific wavelength.

The invention discloses a triphenyldioxinimide diploid compound and a preparation method thereof, and belongs to the technical field of organic synthesis. A triphenyldioxinmide diploid is synthesizedand obtained by adopting monobromotriphenyldioxinimide and reacting with a monoboric acid aromatic hydrocarbon, a monopinacol borate aromatic hydrocarbon or a monotributyltin aromatic hydrocarbon under the action of a catalyst and an alkali through a C-C coupling method. Through the introduction of an aliphatic side chain of the triphenyldioxazine imide diploid, the dissoluvability of the triphenyldioxinimide diploid is effectively ameliorated; a conjugately bridged diploid structure can generate spatial warping to inhibit molecular aggregation and the triphenyldioxinimide diploid compound canshow excellent photoelectric performance when being applied to an organic photoelectric device.

The invention discloses preparation for a sunscreen humectant of a shampoo, and belongs to the field of chemical engineering. The light yellow transparent sunscreen humectant of the shampoo is prepared by the following steps of: putting raw materials, such as feather waste, sodium hydrogensulfite, urea and lauryl sodium sulfate into a container; adding distilled water, uniformly mixing the raw materials with the distilled water; respectively feeding nitrogen and argon to isolate air; reacting under the constant-temperature condition, leaching, and washing non-melted feathers by the distilled water; collecting a cleaning solution; and dialyzing the solution obtained by leaching and the cleaning solution in flowing water. The preparation method is simple in technique and convenient to operate; and the obtained product can be linked with hydrophilic groups exposed in damaged hairs to form a bond and achieve effects of repairing, moisturizing and enhancing. Compared with a chemical sunscreen, the sunscreen humectant does not have toxic and side effects; a human body is not allergic to the sunscreen humectant; and the sunscreen humectant is relatively high in hair adsorbability and is an ideal and natural sunscreen hair protection additive.

The invention belongs to the field of preparation of inorganic non-metallic materials and particularly relates to a preparation method of a tin dioxide/copper oxide composite nano material with a spherical hierarchical structure. The preparation method comprises the following steps: fully dissolving copper acetylacetonate and tin tetrachloride in a methanol solution, performing solvothermal reaction, filtering, washing, drying, calcining and cooling to obtain the tin dioxide/copper oxide composite nano material with the spherical hierarchical structure. The tin dioxide/copper oxide composite nano material prepared by the preparation method provided by the invention is high in purity and low in preparation cost, the size of a whole big ball is 3-6 mm, the size of a nano particle is 20-30 nm, the product uniformity and the dispersibility are good, and the large-scale production is easy. The tin dioxide/copper oxide composite nano material with the spherical hierarchical structure, prepared by the preparation method provided by the invention, has higher visible light photocatalytic activity and wide application prospect in the fields of dye wastewater and indoor harmful gas degradation, photocatalytic disinfection and the like.

The invention belongs to the field of inorganic non-metallic material preparation and particularly relates to a preparation method of a chromic oxide nano-material. The preparation method includes the steps that after chromium acetylacetonate is fully dissolved in a methanol solution, a solvothermal reaction is carried out, after filtering and washing are carried out, drying, calcining and cooling are carried out, and the chromic oxide nano-material is obtained. The process is simple, convenient and easy to carry out, product purity is high, the preparation cost is low, the size of the obtained product ranges from 30 nm to 50 nm, the uniformity and dispersity of the product is good, and the product is easily applied to practical large-scale production. The prepared chromic oxide nano-material can be used for the fields of enamel, ceramic, artificial leather, sun-proof paint, grinding materials, green polishing paste, printing ink special for printing paper money and the like.

The invention discloses a gold-zinc oxide hetero-junction nano-particle array and a method for preparing the same. Gold-zinc oxide hetero-junction nano-particles in the gold-zinc oxide hetero-junctionnano-particle array have polygonal starry morphology, gold nano-spheres are used as centers, and zinc oxide nano-sheets grow around the gold nano-spheres in a non-close manner. The method includes mixing the gold nano-spheres, zinc nitrate, sodium hydroxide and sodium borohydride with one another in water to obtain precursor mixed solution; carrying out reaction on the precursor mixed solution atthe temperature of 60-100 DEG C for 10-60 minutes to obtain gold-zinc oxide hetero-junction nano-particle colloidal solution; centrifugally separating the gold-zinc oxide hetero-junction nano-particle colloidal solution, dispersing the gold-zinc oxide hetero-junction nano-particle colloidal solution into n-butanol solution, carrying out treatment by the aid of gas-solution interfacial self-assembly processes and fishing up monolayer nano-particle arrays by the aid of substrates. The monolayer nano-particle arrays float on solution surfaces. The gold-zinc oxide hetero-junction nano-particle array and the method have the advantages that the gold-zinc oxide hetero-junction nano-particle array has intense absorption peaks in ultraviolet regions and visible regions and is high in catalytic reaction efficiency; processes for preparing the gold-zinc oxide hetero-junction nano-particle array are simple and environmentally friendly and are low in cost and free of pollution, and accordingly thegold-zinc oxide hetero-junction nano-particle array and the method are suitable for large-scale industrial production.

The invention discloses a chlorin e6-nanogold compound for photothermal and photodynamic therapy of tumors and a preparation method of the chlorin e6-nanogold compound. The preparation method specifically comprises the following steps: preparing hollow spike-shaped nanogold through a replacement reaction of a chloroauric acid compound and silver nanoparticles; synthesizing a chlorin e6 functional molecule cross-linked with polyethylene glycol at the tail end of lipoic acid; and using the prepared nanogold as a carrier, and simultaneously compounding a certain proportion of lipoic acid polyethylene glycol methoxyl and LA-PEG-Ce6 on the surface of the nanogold, so that the chlorin e6-nanogold compound with dual functions of near infrared absorption and photosensitization is constructed. The compound has the advantages of low cost, simple preparation method, high stability, good biocompatibility and the like. A tumor cell experiment further proves that the GNS-Ce6 compound has a remarkable effect on improving the uptake efficiency of the chlorin e6 and the nanogold. The survival rate of cancer cells can be effectively reduced through mediated photothermal and photodynamic therapy.

The invention discloses a preparation method of cool sunscreen cream with an angelica-dahurica compound plant. The preparation method is characterized by comprising the following steps: adopting angelica-dahurica essential oil, liquorice flavone, green-tea essential oil, mint essential oil and honeysuckle essential oil to prepare compound essential oil; then in a reactor, adding the following components in percent by weight: 0.1-0.2% of carbomer and 25-30% of deionized water, after dissolving, adding 38-45% of compound essential oil, 6-10% of hexadecanol, 2-6% of silk fibroin, 2-4% of glycerinum and 15-20% of EM-90 emulsifier, stirring and mixing uniformly, adding triethanolamine, adjusting pH to be about 7.0, stirring at high speed, mixing together, standing for 24 hours, and thus obtaining the cool sunscreen cream with the angelica-dahurica compound plant and subpackaging into containers. The sunscreen cream emits natural fragrance, has the effects of bacteriostasis, skin moisturizing, whitening and sunscreen, has no side effect to a human body, is convenient in use and realizes average sunscreen effect of more than 90%.

The invention belongs to the technical field of functional material preparation, and relates to a preparation method of a chromium molybdate micron-nanometer material. The preparation method comprises the steps that molybdic acid and chromic nitrate are dissolved in an oxalic acid aqueous solution, water is evaporated to dryness on the condition that heating and stirring are conducted, a cross-linking reaction is conducted, heat treatment is conducted in a muffle furnace, and the chromium molybdate micron-nanometer material is obtained. According to the preparation method of the chromium molybdate micron-nanometer material, the technology is simple, convenient and easy to carry out, the purity is high, the impurity content is low, the product preparation cost is low, the performance is excellent, and industrial mass production can be conducted. The prepared chromium molybdate micron-nanometer material serves as a negative thermal expansion to use, and a wide application prospect in the aspects of aerospace materials, engine parts, integrated circuit boards, optical devices and the like is achieved.