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991 results about "Supermolecule" patented technology

The term supermolecule (or supramolecule) was introduced by Karl Lothar Wolf et al. (Übermoleküle) in 1937 to describe hydrogen-bonded acetic acid dimers. The study of non-covalent association of complexes of molecules has since developed into the field of supramolecular chemistry. The term supermolecule is sometimes used to describe supramolecular assemblies, which are complexes of two or more molecules (often macromolecules) that are not covalently bonded. The term supermolecule is also used in biochemistry to describe complexes of biomolecules, such as peptides and oligonucleotides composed of multiple strands.

Nd (III)-based hydrogen bond organic framework crystalline material and preparation method and fluorescence sensing application thereof

The invention relates to the technical field of fluorescence sensing, in particular to a preparation method and application of an Nd (III)-based hydrogen bond organic framework crystalline material. According to the Nd (III)-based hydrogen bond organic framework crystalline state material, Nd (III) serves as a central metal ion and is coordinated with 9 oxygen atoms, and adjacent Nd (III) are connected through H2 (4-CPCA) ligands to form a one-dimensional chain structure. One-dimensional chains are bridged through H2 (4-CPCA) ligands to form a two-dimensional double-layer planar structure, and two-dimensional surfaces are further stacked through the interaction of a large number of intermolecular hydrogen bonds to form a three-dimensional supramolecular structure. The Nd (III)-based hydrogen bond organic framework crystalline material has good fluorescent property and stability, and can be applied to the field of fluorescence sensing.
Owner:SHAANXI SCI TECH UNIV

Hydroxytyrosol supramolecular compound as well as preparation method and application thereof

The invention provides a hydroxytyrosol supramolecular compound and a preparation method and application thereof, and belongs to the technical field of cosmetics and biological medicine, the supramolecular compound comprises the following chemical components by mass: 0.01-10% of hydroxytyrosol, 2-45% of an amino acid compound, 2-20% of alpha hydroxy acid, 2-30% of urea, and 15-92% of water. The supramolecular compound can promote transdermal delivery of hydroxytyrosol and maintain the biological activity of hydroxytyrosol, shows high biocompatibility, and can be applied to product development in the antibacterial field, the regeneration field and the anti-aging field.
Owner:SICHUAN UNIV

Inorganic-organic hybrid compound crystal and preparation method thereof

The invention discloses an inorganic-organic hybrid compound crystal and a preparation method thereof, and belongs to the technical field of organic-inorganic hybrid materials. The preparation method comprises the following steps: mixing raw materials containing hydroiodic acid, organic cage molecules RCC3 and a lead source with a solvent, and carrying out solvothermal reaction to obtain the inorganic-organic hybrid compound crystal. The chemical formula of the prepared inorganic-organic hybrid compound crystal is ({H18 [C72H108N12] 2 [(Pb10I36)]}. 2I), wherein [C72H108N12] is RCC3 acidified by hydroiodic acid, the crystal has a supramolecular three-dimensional structure assembled by a [Pb5I8] 3-anion cluster unit and a protonated RCC3 molecular cage through electrostatic and hydrogen-bond interaction, and belongs to a monoclinic system, and the space group is P21. The crystal structure is a metal halide-based organic-inorganic hybrid crystal constructed by taking an organic molecular cage as nitrogen-containing cations and lead iodide for the first time.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI

A fast-dissolving hydrophobic associating polymer for reinjection water for fracturing and its preparation method

The present invention relates to the field of oilfield chemical technology, and proposes a fast-soluble hydrophobic associating polymer for reinjection water for fracturing and a preparation method thereof. Hydrophobic functional monomers and non-ionic polarity regulators are prepared into polymerizable hydrophobic associating micelles, and the polymerizable hydrophobic associating micelle solution and conventional monomer aqueous solution are mixed. The molecular weight of the copolymer is regulated by a molecular weight regulator, and the fast-soluble hydrophobic associating polymer for reinjection water is obtained after reaction, granulation, drying and crushing. It comprehensively utilizes the synergistic effect of the multi-component supramolecular forces of the ternary hydrophobic functional monomers to achieve stability regulation of the associating micelles, and obtains a three-dimensional network structure of salt-resistant polymers with a dense associating network and a strong associating effect; introduces a polarity regulator containing a non-ionic hydrophilic structure, and utilizes self-assembly to form a hydration layer on the surface of the associating micelles, thereby weakening the water-phase aggregation effect and ion shielding effect of the hydrophobic structure, which is beneficial to the stretching of the molecular chain in the water phase, and obtaining the online mixing and fast-dissolving efficiency of the reinjection water, and having both high salt resistance and strong sand carrying performance.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Enzyme response type supramolecular PDRN-mini ECM liposome as well as preparation method and application thereof

The invention provides an enzyme response type supramolecular PDRN-mini ECM liposome and a preparation method and application thereof.The enzyme response type supramolecular PDRN-mini ECM liposome comprises phospholipid, a membrane stabilizer, a supramolecular compound and an emulsifier, a water phase formed by the supramolecular compound and the emulsifier serves as an inner core, and the supramolecular compound is formed by PDRN and mini ECM through intermolecular acting force; the mini ECM is formed by self-assembly of collagen peptide, elastin and hyaluronic acid. The supramolecular PDRN-mini ECM liposome with uniform particle size and good stability is obtained through a microfluidic technology, the process is simple, the controllability is high, and amplification is easy.
Owner:CHONGQING CHAOWEI CHEMICAL ENERGY TECHNOLOGY CO LTD +2

Supramolecular filamentous assemblies for protein purification

The present invention provide novel immunofiber compositions for protein or peptide purification and simple and cost-efficient methods and systems using these compositions. In some embodiments, the immunofibers comprise a customized Z-33 peptide derived from Staphylococcus aureus Protein A which is used to construct immuno-amphiphile molecules that assemble into immunofibers in aqueous solution with bioactive epitopes on the surface and have peptide or protein binding ability.
Owner:JOHNS HOPKINS UNIVERSITY +1

Worm-like supramolecular associated micelle, hydrophobic associated copolymer and preparation method of wormlike supramolecular associated micelle and hydrophobic associated copolymer

The present invention relates to the technical field of oilfield chemistry, and provides a wormlike supramolecular associated micelle, a hydrophobic associated copolymer and a preparation method thereof, the wormlike supramolecular associated micelle comprises a soft template, a hydrophobic functional monomer 1, a hydrophobic functional monomer 2 and a polarity regulator, the soft template is a long-chain molecular polymer and has an active functional group, and the polarity regulator is a hydrophobic functional monomer 2. The hydrophobic functional monomer 1 is an anionic-nonionic surfactant with polymerizable double bonds, the hydrophobic functional monomer 2 is a cationic-nonionic surfactant with polymerizable double bonds, and the polarity regulator is a micromolecular organic compound. The problems of poor resistance reduction, sand carrying capacity and the like of the fracturing fluid in the construction process due to dissociation of a polymer molecular network structure and sudden reduction of rheological property and viscoelasticity are solved.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Plant extract as well as extraction method and application thereof

The invention relates to the technical field of cosmetic functional raw material preparation methods, in particular to a plant extract and an extraction method and application thereof. The invention provides a plant extraction method, which comprises the following steps: adding a glycol ether or polyhydric alcohol solvent containing 5-7 carbon atoms into a product containing phenolic acid compound components and lignan compound components, carrying out homogeneous reaction, carrying out heating extraction, and collecting the extract. By adopting a supramolecular technology, phenolic acid compound components can form a supramolecular solvent with glycol ether or polyol solvents containing 5-7 carbon atoms, and the supramolecular solvent is further combined with lignan compound components to form a supramolecular structure, so that the stability of an extracting solution is remarkably enhanced, the specific enrichment of the lignan compound components is realized, and the specific enrichment of the lignan compound components is realized. The problems that an existing extraction technology is poor in stability, poor in formula applicability, not prominent in effect and the like are successfully solved.
Owner:BEIJING DONGFANG MIAOSEN BIOTECH CO LTD +1

Reinjection water instant hydrophobic association polymer for fracturing and preparation method thereof

The invention relates to the technical field of oilfield chemistry, and provides a reinjection water instant hydrophobic association polymer for fracturing and a preparation method thereof. The preparation method comprises the following steps: preparing a polymerizable hydrophobic association micelle from a hydrophobic functional monomer and a nonionic polarity regulator, mixing the polymerizable hydrophobic association micelle solution with a conventional monomer aqueous solution, regulating the molecular weight of the copolymer by a molecular weight regulator, reacting, granulating, drying and crushing to obtain the reinjection water instant hydrophobic association polymer. By comprehensively utilizing the synergistic effect of multi-element supramolecular force of a ternary hydrophobic functional monomer, the stability of associated micelles is regulated and controlled, and a salt-resistant polymer three-dimensional network structure with a dense association network and a strong association effect is obtained; a polarity regulator containing a nonionic hydrophilic structure is introduced, a hydration layer is formed on the surface of associated micelles by utilizing a self-assembly effect, a water phase aggregation effect and an ion shielding effect of a hydrophobic structure are weakened, stretching of a molecular chain in a water phase is facilitated, online mixing instant efficiency of reinjection water is obtained, and high salt resistance and strong sand-carrying performance are achieved.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Monomolecular device based on supramolecular induced electrochemical polymerization and preparation method thereof

The invention relates to the technical field of semiconductor devices, in particular to a monomolecular device based on supramolecular induced electrochemical polymerization and a preparation method thereof.The molecular device comprises a graphene point electrode pair and a monomolecular chain, and the monomolecular chain is connected between the graphene point electrode pair; wherein the single molecular chain is formed through supramolecular induced electrochemical polymerization; the host molecule encompasses the guest molecule in the cylindrical cavity of the host molecule to form a supramolecule; the host molecule is selected from cyclodextrin, and the guest molecule is selected from thiophene or thiophene derivatives; the tail ends of the graphene point electrode pairs are modified by amino-containing monomer molecules respectively, the monomer molecules are connected with the graphene point electrode pairs through amido bonds, and the monomer molecules serve as a starting unit and a terminating unit of supramolecular induced electrochemical polymerization, so that assembly of functional cores of a monomolecular device is facilitated; according to the technical scheme provided by the invention, the problem of how to prepare an efficient and reliable monomolecular device by utilizing an electrochemical polymerization method is solved.
Owner:NANKAI UNIV

Method for preparing self-coiled structure molybdenum disulfide / nitrogen-doped porous carbon composite material, product and application thereof

The application provides a preparation method of a self-coiled structure molybdenum disulfide / nitrogen-doped porous carbon composite material, a product and application, high-content nitrogen-doped porous carbon material is synthesized by inducing dicyandiamide molecules to undergo a supramolecular self-assembly process, and on this basis, a hydrothermal reaction is carried out to coat molybdenum sulfide sheet layer material on the surface, and finally, a self-heating coiling treatment is carried out to form a carbon-based electrocatalyst of the self-coiled structure molybdenum disulfide / nitrogen-doped porous carbon. Compared with a high specific surface area carbon-based catalyst, high doping concentration of nitrogen atoms can provide more electron-rich properties to facilitate the adsorption of substances, and the self-coiled carbon-based material can exhibit very excellent electrochemical performance, especially in the aspect of electrochemical hydrogen production. The preparation method is simple in operation, low in preparation cost and suitable for large-scale production.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH

Simple preparation method and application of stable barium-based metal organic framework material

PendingCN121226763AEnergy applications of nanotechnologyMaterial synthesis
The invention discloses a simple preparation method of a barium-based metal organic framework (Ba-H2Sip) and proton conduction application of the barium-based metal organic framework (Ba-H2Sip), belongs to the field of functional material synthesis and energy application, and is characterized in that functional differentiation design of a 5-sulfoisophthalic acid ligand: a sulfonic group forms a two-dimensional layered structure by chelating Ba < 2 + >; the carboxyl groups are differentiated into'anchoring carboxyl groups' for constructing a three-dimensional supramolecular skeleton and'proton supply carboxyl groups' for providing a proton source, and the design is reported for the first time in Ba-based MOFs; according to the present invention, the large-scale preparation can be achieved by stirring the low-cost raw material in 1 mol / L hydrochloric acid at the room temperature, the yield exceeds 70%, the product can resist 8 M acid and pH = 13 alkali liquid, the conductivity at 90 DEG C / 90% humidity can achieve 1.39 * 10 <-2 > Scm <-1 >, the high-temperature process is not required, the raw material is low in cost and easy to obtain, and the feasible scheme is provided for the high-efficiency proton conductor industrialization.
Owner:GUIZHOU UNIV +1

Preparation method and application of supramolecular solvent containing puerarin

The invention relates to the technical field of cosmetics, in particular to a preparation method and application of a supramolecular solvent containing puerarin. The supramolecular solvent containing puerarin comprises puerarin, a hydrogen bond donor and a hydrogen bond receptor, the molar ratio of the hydrogen bond donor to the acceptor is (1-3): (1-2). The puerarin-containing supramolecular solvent formed by using weak interaction force such as hydrogen bonds can effectively solve the problems that puerarin is easy to separate out in the product and poor in transdermal absorption and the like, and meanwhile, the puerarin-containing supramolecular solvent can synergistically promote the effect of puerarin in the oil-control acne-removal product. Cosmetics prepared by adopting the supramolecular solvent prepared by the invention have good oil control and soothing effects, and the preparation process is simple, large-scale production is easy, and the properties are stable.
Owner:GUANGZHOU KEYING COSMETICS CO LTD

Preparation method and application of supramolecular aggregate surfactant

The present invention relates to a preparation method and application of a supramolecular aggregate surfactant, and belongs to the field of supramolecular coordination chemistry, surface modification engineering and hydrophobic coating technology. In the present invention, 4-hydroxypyridine-2,6-dicarboxylic acid and malonic acid prepare an adhesive ligand, and with the help of the coordination of the carboxyl structure and lanthanum ions on 4-hydroxypyridine-2,6-dicarboxylic acid and perfluorooctanoic acid, a supramolecular aggregate in a nano-aggregated state is obtained, which is self-assembled into a supramolecular aggregate surfactant. The active agent can solubilize fluoride and can also be applied in the field of hydrophobic coatings. The coating has the characteristics of imitating lotus leaf structure and hydrophobic wax, and has good hydrophobic properties.
Owner:BEIJING INST OF TECH

Tripterine-sophocarpidine self-assembled nanoparticles as well as preparation method and application thereof

The invention discloses a tripterine-sophocarpidine self-assembled nanoparticle and application thereof in preparation of an anti-tumor drug, and belongs to the field of biological medicine. The nanoparticles are formed by self-assembly of the tripterine and the sophocarpidine through supramolecular interaction, the molar ratio of the tripterine to the sophocarpidine is 1: 1-1: 3, and the self-assembly system effectively solves the problems of low Cst solubility, poor bioavailability, rapid in-vivo removal and the like; the inhibition effect on triple negative breast cancer (TNBC) is remarkably enhanced through the synergistic effect of Cst and Mar, and a new strategy is provided for expanding the application of a traditional Chinese medicine carrier-free self-assembly nano drug delivery system in the anti-tumor field.
Owner:HUBEI UNIV OF CHINESE MEDICINE

Polysaccharide fluid hydrogel for digestive tract submucous injection and preparation method thereof

The invention discloses polysaccharide fluid hydrogel for digestive tract submucous injection and a preparation method of the polysaccharide fluid hydrogel, and belongs to the field of medical biological materials. According to the invention, carboxylated chitin or a carboxylated chitosan derivative with a mass percentage of 0.1-6%, or hydroxyalkylated chitin or a hydroxyalkylated chitosan derivative and collagen or gelatin are subjected to micro-crosslinking to form a low-crosslinking-degree supramolecular derivative as a solute; the polysaccharide fluid hydrogel is formed by taking water, normal saline, a physiological equilibrium solution, a phosphate buffer solution or a Green's solution as a solvent. By controlling the molar ratio of the raw materials to the cross-linking agent and performing micro-crosslinking with a small amount of the cross-linking agent, the prepared low-crosslinking-degree supramolecular derivative can form hydrogel in an aqueous solvent, has shear thinning and self-repairing characteristics, has certain viscosity, is easy to push and inject, and can be applied to the field of water treatment. The lifting height of the mucous membrane can be effectively kept, the height keeping time can be effectively prolonged, the mucous membrane is not prone to overflowing under the condition that the mucous membrane is damaged, an endoscope injection device is not blocked, and the material is an ideal material for forming a safe liquid pad through digestive tract submucous injection.
Owner:OCEAN UNIV OF CHINA

Self-classification driven supramolecular dimer as well as preparation method and application thereof

The invention discloses a self-classification driven supramolecular dimer as well as a preparation method and application thereof. According to the supermolecule composite material, cucurbit [8] uril serves as a subject, a phenylpyridinium derivative G serves as an object, and a small-size supermolecule dimer with red / near-infrared delayed emission is formed through subject-object inclusion interaction and a self-classification strategy. The supramolecular dimer structure inhibits distorted intramolecular charge transfer (TICT) and promotes space charge transfer (TSCT), enabling red thermally activated delayed fluorescence (in some embodiments, 620 nm) and near infrared phosphorescence (in some embodiments, 740 nm) of simple organic small molecules. The proposed synergistic supramolecular strategy provides a new way for realizing simple red / near-infrared delayed emission of small organic molecules in a water phase, and has potential application value in the fields of biological materials and the like.
Owner:EAST CHINA UNIV OF SCI & TECH

Cucurbituril-based supramolecular organic framework material as well as preparation method and application thereof

The invention relates to the technical field of nuclear waste treatment, in particular to a cucurbituril-based supramolecular organic framework material as well as a preparation method and application thereof. A construction unit of the supramolecular organic framework material is constructed by taking cucurbit [8] uril (CB8) as a subject and terephthalyl viologen ligand 1, 1 ''-(1, 4-phenylene) bis ([4, 4 '-bipyridyl]-1-onium) salt (PBV. 2X) as an object through the bonding effect of the subject and the object; in the molecular structure of the supramolecular organic framework material, the construction units are staggered and stacked in parallel in the space, and NO3 <-> is located at the gap of the adjacent CB8. The supramolecular organic framework material disclosed by the invention has high structural stability and cationic framework characteristics, and a rigid framework and a pyridine conjugated system of CB8 endow the material with excellent chemical / irradiation stability, so that the material shows ultrahigh removal rate on ReO4 <-> / TcO4 <-> in extreme environments (strong acid, strong alkali and high irradiation).
Owner:INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI

Environment-friendly organic slow-release fertilizer and preparation method thereof

The invention relates to the technical field of agricultural fertilizers, and discloses an environment-friendly organic slow-release fertilizer and a preparation method thereof, the environment-friendly organic slow-release fertilizer comprises the following raw materials by mass: 55-65% of a decomposed straw carrier; 20%-30% of a slow release carrier; 8%-12% of a microencapsulated bacterial agent; 3%-5% of a cross-linking agent; and 2%-4% of an auxiliary additive. The porosity of the decomposed straw carrier is larger than or equal to 65%, the carbon nitrogen ratio is (25-28): 1, the particle size is 0.5-1.5 mm, and the water holding capacity is larger than or equal to 2.5 g / g. The environment-responsive supramolecular slow-release system is constructed, supramolecular host-guest interaction and temperature-responsive polymer synergism are utilized, the fertilizer release rate can be dynamically regulated and controlled along with the crop rhizosphere temperature, nitrogen can be accurately released in the crop fertilizer demand peak period, the matching degree of a nitrogen release curve and crop demand is increased to 90% or above, and the nitrogen release rate is increased to 90% or above. Compared with the traditional organic fertilizer with the problems of uncontrolled nutrient release, excessive nutrient loss in the early stage and insufficient supply in the later stage, the fertilizer realizes the high conformity of nutrient release and crop requirements.
Owner:锦州市锦宏精细化工有限责任公司

A ternary liquid supramolecular self-assembly system of NHDC / cyclodextrin / pyruvic acid and its preparation method

The present invention discloses a ternary liquid supramolecular self-assembly system of NHDC / cyclodextrin / pyruvic acid and a preparation method thereof, belonging to the technical field of supramolecular. By selecting molecules compatible with neohesperidin dihydrochalcone, the types and addition amounts of the compatible molecules, the present invention provides a ternary liquid supramolecular self-assembly system of neohesperidin dihydrochalcone / cyclodextrin / pyruvic acid and a preparation method thereof. The neohesperidin dihydrochalcone / cyclodextrin / pyruvic acid system obtained by supramolecular self-assembly is in a stable liquid state, can be miscible with water in a specific ratio without precipitation, and effectively improves the water solubility, stability, antioxidant property and antibacterial property of neohesperidin dihydrochalcone.
Owner:WUXI INSPECTION TESTING & CERTIFICATION INST

Supramolecular aggregate modified vinyl resin material and preparation method thereof

PendingCN120349624APolymer scienceAccelerant
The invention relates to the technical field of functional materials, in particular to a supramolecular aggregate modified vinyl resin material and a preparation method thereof. The supramolecular aggregate modified vinyl resin material is prepared from the following raw materials in parts by weight: 1.3 to 4.6 parts of aliphatic isocyanate monomer, 5 to 15 parts of micromolecular polyol, 0.8 to 2.9 parts of ureido pyrimidone monomer, 1 to 3 parts of curing agent, 50 to 100 parts of vinyl resin and 0.5 to 2.3 parts of accelerant, so that the modified vinyl resin material has reversible dynamic mechanical property; good damping vibration attenuation performance can be provided; and the material has good mechanical properties and excellent impact toughness, and can be widely applied to various fields as a high-performance functional material.
Owner:HARBIN ENG UNIV

Hypoglycemic composition containing supramolecular group composite peptide and application of hypoglycemic composition in functional food and medicine

The invention discloses a hypoglycemic composition containing supramolecular group composite peptide. The hypoglycemic composition comprises collagen peptide, soybean peptide, bitter gourd peptide, bamboo leaf flavone, L-carnitine and the like. The composition prepared by selecting raw material components of specific types and dosages has the effects of remarkably reducing the glucose level and increasing the insulin level, and part of the composition can also cooperate with metformin to achieve the effects of enhancing the effect of reducing blood sugar and improving or preventing type 2 diabetes mellitus. Therefore, the method can be used for developing functional foods and medicines and has a considerable market prospect.
Owner:HANGZHOU HUANTE BIOLOGICAL TECH CO LTD

Polydeoxyribonucleotide self-assembled supramolecular nanoparticle composition, preparation method and application thereof, and cosmetics

The invention relates to a poly (deoxyribonucleotide) self-assembled supramolecular nanoparticle composition, a preparation method and application thereof and cosmetics, the poly (deoxyribonucleotide) self-assembled supramolecular nanoparticle composition comprises PDRN and mussel protein, and the mass ratio of the PDRN to the mussel protein is 1: (0.05-10). The PDRN-mussel protein self-assembled supramolecular nano-particles have the beneficial effects that the PDRN-mussel protein self-assembled supramolecular nano-particles are prepared by utilizing the inherent charge properties of PDRN and mussel protein, so that the microscopic sizes of the PDRN and mussel protein are compressed, the transdermal absorption of the PDRN and mussel protein is greatly improved by utilizing the properties of the nano-particles, and a synergistic repairing effect is shown.
Owner:SHANGHAI HUARUI WANMEI BIOTECHNOLOGY CO LTD +1

Non-noble metal ORR catalyst and preparation method thereof

The invention discloses a non-noble metal ORR catalyst and a preparation method thereof, and belongs to the technical field of electro-catalysis. The method comprises the following steps: (1) adding 5, 10, 15, 20-tetra (4-cyanophenyl) porphyrin and nickel salt into an organic solvent, and synthesizing a supramolecular crystal precursor UPC-S7 through solvothermal reaction; (2) carbonizing the supramolecular crystal precursor UPC-S7 in an inert atmosphere to obtain a Ni-coated NC material; (3) oxidizing the Ni-coated NC material in an oxygen-containing atmosphere to obtain a Ni / NiO-coated NC material; and (4) sequentially soaking and etching the Ni / NiO-coated NC material by using a nitric acid solution and an ammonia water solution, and then washing and drying to obtain the non-noble metal ORR catalyst. The prepared catalyst does not contain precious metal such as platinum, the raw material cost is remarkably reduced on the basis of ensuring the ORR activity and stability of the catalyst, and a new scheme is provided for solving the cost bottleneck of a fuel cell.
Owner:SHANDONG UNIV OF SCI & TECH

Natural deep-eutectic solvent for maintaining quality of frozen penaeus vannamei boone and application of natural deep-eutectic solvent

The invention relates to the technical field of aquatic product preservation, and discloses a natural eutectic solvent for maintaining the quality of frozen penaeus vannamei boone and application, the natural eutectic solvent is composed of choline chloride, sorbitol and water, the molar ratio of choline chloride to sorbitol is (1-5): (1-5), and the mass of water is 15-25% of the total mass of choline chloride and sorbitol. The invention also provides an application of the solvent, and the application comprises the following steps: soaking the penaeus vannamei meat in the solvent, and then freezing and storing the penaeus vannamei meat. A supramolecular network system is constructed through hydrogen-bond interaction between choline chloride and sorbitol, growth of ice crystals in the freezing storage process is inhibited, a protein structure is stabilized, and loss of unfrozen juice is reduced, so that the quality of the penaeus vannamei, such as texture, color and flavor, is maintained. The natural deep-eutectic solvent is natural and safe in component, low in heat, simple to prepare and convenient to apply, the application limitation of a traditional anti-freezing agent is solved, and the natural deep-eutectic solvent has a good industrial prospect.
Owner:MARINE FISHERIES RES INST OF ZHEJIANG

Targeted supramolecular BAPs-PLGA nanoparticles as well as preparation method and application thereof

The invention relates to a targeted supramolecular BAPs-PLGA nanoparticle as well as a preparation method and an application of the targeted supramolecular BAPs-PLGA nanoparticle. The nanoparticle is prepared through a microfluidic technology and an ultrasonic emulsification technology, PLGA is used as an oil phase, supramolecular BAPs is used as a water phase to form a primary emulsion, and then the primary emulsion and a water phase containing an emulsifier and supramolecular RGD form a multiple emulsion. According to the technology, the BAPs and the eutectic solvent (TG-DES) are combined to form a stable supramolecular structure, so that the solubility and the stability of the BAPs are remarkably improved. The supramolecular RGD is attached to the surface of the nanoparticle and endows the nanoparticle with targeting property, and the cellular uptake ability of the BAPs can be improved through NRP-1 mediated transendocytosis. According to the invention, the bioavailability of the BAPs can be improved, and a new solution is provided for a drug delivery system and skin penetration enhancement. In addition, the preparation method of the nanoparticles is simple, controllable in process, suitable for industrial production and wide in application prospect.
Owner:INERTIA SHANGHAI BIOTECHNOLOGY CO LTD +2

Hydrogel for preventing postoperative tissue adhesion and preparation method thereof

The invention discloses hydrogel for preventing postoperative tissue adhesion and a preparation method thereof, and belongs to the field of medical biological materials. The hydrogel is formed by taking a carboxylated chitin / chitosan derivative with the percentage concentration of 0.5-7% or a low-crosslinking-degree supramolecular derivative of a hydroxyalkylated chitin / chitosan derivative and collagen or gelatin as a solute and water, normal saline, a physiological equilibrium solution, a phosphate buffer solution or a Green's solution as a solvent, the crosslinking degree of the low-crosslinking-degree supramolecular crosslinking derivative is 0.1 to 6 mol percent. The molar ratio of the raw materials to the cross-linking agent is controlled, a small amount of cross-linking agent is used for micro-crosslinking, the prepared low-crosslinking-degree supramolecular derivative can form hydrogel in an aqueous solvent, and the hydrogel has adhesiveness and self-repairing performance, can effectively prolong the residence time and physical barrier time of the hydrogel on the surface of an operative wound, and can be used for preparing the hydrogel. Therefore, the effect of preventing postoperative combined adhesion of the hydrogel is improved, and the hydrogel is an ideal hydrogel material for preventing postoperative abdominal cavity and uterine cavity tissue adhesion.
Owner:QINGDAO HUISHENG HUIZHONG BIOLOGICAL TECH CO LTD

Supermolecular lipid nanoparticles capable of promoting endosome escape as well as preparation method and application of supermolecular lipid nanoparticles

The invention discloses supramolecular lipid nanoparticles capable of promoting endosome escape as well as a preparation method and application of the supramolecular lipid nanoparticles. Raw materials of the supramolecular lipid nanoparticles (CNPs) comprise the following two components: polyethylene glycol lipid and supramolecular ionizable lipid as shown in a formula (I). The nucleic acid drug delivery system which has endosome escape ability and further improves inhalation and delivery efficiency is prepared by optimizing the components and formula proportion of the CNPs, and the system has sufficient stability, safety and relatively high loading efficiency, and can remarkably improve the endosome escape ability of cells and prolong the residence time of the lung. # imgabs0 #
Owner:TSINGHUA UNIVERSITY +1

Monomolecular memristor-rectifier device based on supramolecular assembly and preparation method thereof

The invention relates to the technical field of microelectronic devices, in particular to a single-molecule memristor-rectifier device based on supramolecular assembly and a preparation method thereof. According to the preparation method, the guest molecule B is covalently connected with the tail end of the graphene electrode pair, so that stable and tight interface bonding between the supramolecular functional molecule and the electrode can be ensured; and then soaking the graphene electrode pair connected with the guest molecule B in a solution containing the host molecule A and the guest molecule C to form a supramolecular functional molecule between the graphene electrode pair. The guest molecule C in the supramolecular functional molecule has intrinsic oxidation-reduction activity, and the molecular structure of the guest molecule C can generate a reversible electron gain and loss process, so that controllable and reversible adjustment of charge distribution in the molecule is realized. Under the action of an electric field, through the reversible oxidation-reduction reaction of the guest molecule C, significant changes of intramolecular charge distribution and electron transmission characteristics are triggered, and finally reliable switching of high and low resistance states of the device is achieved.
Owner:NANKAI UNIV