73 results about "Molecular aggregation" patented technology

The invention provides a rare earth complex as well as a preparation method and application thereof. The chemical general formula of the rare earth complex is (Ln < 1x > Ln < 2y > Ln < 31-x-y >) (A) m (B) n, the rare earth complex provided by the invention has a self-assembly behavior, spherical nanoparticles can be formed through molecular aggregation, under ultraviolet irradiation, internal ligand molecules are better protected, the photobleaching process of the rare earth complex under natural conditions is slowed down, and the rare earth complex has better stability and higher weather resistance in the natural environment.

The invention discloses a surface defect and oxygen doping co-modified pore-rich g-C3N4 nano material as well as preparation and application thereof. The preparation method comprises the following steps: mixing a white viscous melamine-cyanuric acid suspension with an oxalic acid solution to obtain a melamine-cyanuric acid-oxalic acid suspension solution, carrying out hydrothermal treatment to obtain a hydrogen bond connected self-assembled supramolecular aggregate, and finally carrying out thermal polycondensation on the self-assembled supramolecular aggregate and formaldehyde to obtain the surface defect and oxygen doping co-modified porous g-C3N4. The surface defect and oxygen doping co-modified g-C3N4 nano material with different morphologies and physicochemical properties is obtained. The preparation method is simple in process flow, efficient, low in cost and suitable for large-scale production, and the synthesis process meets the green chemical requirement; the obtained nano material has a higher specific surface area and more active sites, and has higher catalytic reaction and adsorption performance on organic pollutants, namely levofloxacin, ciprofloxacin and tetracycline hydrochloride, in a water body.

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.

The invention relates to a fracturing technology, in particular to a modified nano lactide material, a preparation method and application thereof and fracturing fluid. According to the modified nano lactide material, in liquid polyethylene glycol with the molecular weight of 380-430, the hydrodynamic diameter D10 of a molecular aggregate is 15-25 [mu] m, the hydrodynamic diameter D50 is 60-90 [mu] m, and the hydrodynamic diameter D90 is 160-190 [mu] m. The preparation method of the modified nano lactide material comprises the following steps: carrying out hydroxylation treatment and activation treatment on a nano microsphere lactide raw material, and contacting with a fluorine-containing surfactant. The modified nano lactide material has excellent degradation performance at a low temperature, meets the low-temperature construction requirement, and can effectively block pores of various sizes when being applied to a fracturing fluid system.

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.

The invention relates to a fracturing technology, in particular to a composition containing nano silicon dioxide, a preparation method of the composition and fracturing fluid. The composition contains modified nano silicon dioxide and a solvent, based on the total amount of the composition, the content of the modified nano silicon dioxide is 30-50 wt%, the molecular aggregate hydrodynamic diameter D50 of the composition is 90-150 [mu] m, the molecular aggregate hydrodynamic diameter D90 is 180-300 [mu] m, and the adsorption force is 0.3-0.4 mN. The preparation method of the composition comprises the following steps: hydroxylating gas-phase nano silicon dioxide in a solvent, contacting the hydroxylated gas-phase nano silicon dioxide with a monomer A in the presence of an initiator, and mixing the obtained product with a fluorocarbon surfactant. The invention also provides an application of the composition in a fracturing fluid and the fracturing fluid containing the composition. The composition can promote the fracturing fluid to rapidly flow back to the reservoir and reduce the damage to the reservoir.

The invention discloses a preparation method of supramolecular aggregation-induced emission self-repairing waterborne polyurethane, which comprises the following steps of: polymerizing isocyanate serving as a hard segment and polytetramethylene glycol serving as a soft segment under the action of a catalyst to obtain a prepolymer, adding a molecular ligand into the prepolymer, and reacting to obtain the supramolecular aggregation-induced emission self-repairing waterborne polyurethane. And carrying out a stirring induced reaction to obtain the waterborne polyurethane with both luminescence property and self-repairing function. The preparation method is simple, the process is easy to control, the prepared waterborne polyurethane has excellent mechanical properties, the tensile strength reaches up to 72.6 MPa, and the elongation at break is 689.6%; under excitation of ultraviolet light of 260-400 nm, the material can emit blue fluorescence, and shows reversible optical response under external stimulation of acid, alkali and the like. In addition, after the material is repaired for 24 hours under the condition of 60 DEG C, the repair rate reaches 100%, and excellent self-repair capability is shown.

The invention relates to a petrochemical technology, in particular to a modified nano calcium carbonate material, a preparation method and application thereof and fracturing fluid. The molecular aggregate fluid dynamic diameter D10 of the modified nano calcium carbonate material in water is 2-10 [mu] m, the molecular aggregate fluid dynamic diameter D50 is 8-31 [mu] m, and the molecular aggregate fluid dynamic diameter D90 is 20-90 [mu] m. The preparation method of the modified nano calcium carbonate material comprises the following steps: carrying out hydroxylation treatment on unsaturated fat monobasic acid, and carrying out contact reaction on the hydroxylated unsaturated fat monobasic acid and a nano calcium carbonate raw material; and carrying out amination treatment on the product of the contact reaction. The modified nano calcium carbonate material not only has degradation performance meeting fracturing construction requirements, but also can realize multi-size plugging in tight reservoirs and improve the plugging rate of pore throats, and can enter the pore throats to adsorb and occupy space so as to reduce retention volume of fracturing fluid and reduce damage to the reservoirs.

The invention belongs to the technical field of organic electronics, and provides a compound, a mixture and a composition for further improving the performance of an organic EL device, and the organic EL device with further improved device performance. The compound has a structure as shown in a formula (1), has an asymmetric structure, can inhibit molecular aggregation and reduce exciton quenching, and shows a high triplet state energy level. The driving voltage of the prepared organic electronic device is reduced, and the luminous efficiency is obviously improved. In addition, the compound provided by the invention also has relatively high thermal stability and contains a certain content of deuterium atoms, so that the service life of the organic electronic device is prolonged. The organic electronic device can be applied to the fields of display and illumination.

The application discloses a kind of aquaculture tail water solubility organic matter characteristic analysis method and system, specifically related to water quality monitoring and analysis technical field, for solving the problem that existing solubility organic matter characterization method is difficult to effectively associate and predict its actual degradation behavior in biological treatment process.Synchronously obtain the three-dimensional fluorescence spectrum data of the water sample to be measured and the liquid chromatography-organic carbon detection combined analysis data, obtain the hydrophilic-hydrophobic component ratio and the proportion of tyrosine-like and humus-like fluorescence components from the analysis, and then judge whether there is significant humus-like component.According to the judgment result, selectively start the deep analysis of the molecular aggregation state of humus-like component, and comprehensively consider the related proportion parameters and aggregation state information, finally realize the evaluation of the biological degradation potential trend of solubility organic matter, and provide key basis for the stability warning of biological treatment system.

The invention discloses a self-repairing gel foam system and a preparation method thereof. The self-repairing gel foam system is composed of 0.3% of lauryl sodium sulfate, 3% of alpha-starch, 3% of acrylamide monomer, 0.1% of N, N '-methylene bisacrylamide cross-linking agent, 0.2% of potassium persulfate initiator and 0.002% of 30nm nano SiO2 particles modified by 0.05 wt% of fatty alcohol-polyoxyethylene ether. The preparation method comprises the following steps: enabling modified starch, acrylamide and the like to react to form starch gel, adding lauryl sodium sulfate and modified nano SiO2, and stirring to obtain the modified starch gel. Gel macromolecular aggregates in the system form a three-dimensional network structure, nanoparticles are uniformly dispersed on the surface of a liquid film to form a gas-liquid-solid three-phase skeleton, and a self-repairing function is realized through a hydrogen bond dynamic effect, so that bubble coalescence can be inhibited, and the capabilities of resisting hypersalinity, high temperature, gas condensate and methanol are enhanced; the problems that traditional foam is poor in stability and free of self-repairing capacity are solved, and the drainage gas recovery requirements of complex working conditions of western gas fields are met.

The present invention relates to a carbazole-modified platinum complex luminescent material and its applications. The platinum complex is a compound having the structure of chemical formula (I). The nitrogen-containing fused ring contained in this series of materials accelerates the triplet radiative transition rate by changing the spin density distribution. This series of materials inhibits molecular aggregation through carbazole modification, reducing the intermolecular π-π effect; while improving the molecular thermal stability, it also improves the luminescence efficiency of the molecule. When this compound is applied in an organic light-emitting diode, it has a low driving voltage and a high luminescence efficiency, and can significantly improve the luminescence efficiency of the material and the device lifetime, and has the potential to be applied in the field of organic electroluminescent devices.

The invention relates to the technical field of separation membranes, in particular to a self-assembled ion separation membrane based on a pillararene derivative and a preparation method of the self-assembled ion separation membrane. The pillararene derivative and the triaminoguanidine hydrochloride are respectively dissolved, so that the problems of instant precipitation and phase separation easily caused by direct mixing are effectively avoided. Meanwhile, two functional monomers are ultrasonically dispersed, so that the problem of molecular agglomeration in the mixing process is avoided, the uniformity of reaction liquid is ensured, and a foundation is laid for subsequently forming a flawless separation membrane. The pillararene derivative contained in the separation membrane structure provides a macrocyclic pore structure with ion recognition capability, and triaminoguanidine hydrochloride acts on sites through multiple hydrogen bonds / ionic bonds, so that the selective separation performance of the membrane is further enhanced. Due to the collaborative design of the material, the material has precise molecular recognition capability and adjustable aperture, and can realize efficient selective separation of target objects such as small organic molecules, ions or dyes.

Compositions and methods for three-dimensional (3D) printing of a variety of products are described. The composition comprises (i) a photoredox component comprising an electron donor and a redox shuttle, and (ii) one or more photoinert materials. The disclosed compositions and methods related to 3D nanoprinting techniques mainly utilize physical processes of phase separation induced by molecular aggregation from light energy input. The driving force of molecular aggregation comes from a photoredox active component in the vicinity of one or more photoinert materials (e.g., molecules to undergo molecular aggregation). Preferably, the collision between the photoredox active component and one or more photoinert materials provides a general phase separation process. The photoredox active component acts as an active bath, allowing any submerged inert reagent to inherit the active properties of the photosensitizer.

The invention provides a light-emitting auxiliary material and a preparation method and application thereof, and belongs to the technical field of light-emitting materials, the structural formula of the light-emitting auxiliary material is shown in the general formula I. The light-emitting auxiliary material takes 9, 9-phenylalkyl fluorene as a parent nucleus, aryl and arylamine groups are connected to the two sides of fluorene of the 9, 9-phenylalkyl fluorene respectively, 9-phenylalkyl fluorene has relatively high glass transition temperature and quantum fluorescence efficiency, the stability and luminous efficiency of the compound can be effectively improved, the energy levels of the highest occupied molecular orbital and the lowest unoccupied molecular orbital can be flexibly adjusted by introducing an electron-donating group arylamine, and the energy barrier of hole injection can be effectively reduced; meanwhile, the other side is connected with an aryl group, so that a conjugated system can be effectively extended, a fluorescence quenching phenomenon caused by intermolecular pi-pi accumulation and excessive molecular aggregation is reduced, the service life of an OLED (Organic Light Emitting Diode) device can be effectively prolonged, the luminous efficiency of the OLED device can be effectively improved, and the driving voltage can be reduced by utilizing the light-emitting auxiliary material.

The application relates to a preparation method of a flame-retardant modified polyisocyanate, and belongs to the technical field of polyurethane elastomers. Nano-composite flame retardants are chemically grafted through the reaction of hydroxyl groups and isocyanate groups in polyisocyanate segments, can be uniformly dispersed in a hydrophilic system, and avoid agglomeration and sedimentation caused by physical mixing. Not only is the dispersibility of the nano-composite flame retardants in polymers improved, but also the interfacial bonding force between the two is improved. 2,2-dimethylol propionic acid is covalently grafted to the polyester side chain of the polyisocyanate through the esterification reaction of hydroxyl groups, pyromellitic anhydride and trimethylolpropane, is converted into a carboxylate after neutralization, and the dispersibility in water is improved. The branched main chain of the comb-shaped polyisocyanate and the side chain polyester unit form a large steric hindrance, further weaken the van der Waals force between molecules, enhance the repulsion between particles, avoid molecular aggregation, and make the flame-retardant modified polyisocyanate form a stable and uniform dispersion liquid in deionized water.

A device may receive, by the computer system, a digital chemical structure for each of a plurality of ligand-drug conjugate compounds. A device may calculate by said one or more processors, an aggregation number for each of said plurality of ligand-drug conjugate compounds. A device may rank, by the computer system, at least a portion of said plurality of ligand-drug conjugate compounds based on said aggregation number. A device may identify, by the computer system, a plurality of low aggregation ligand-drug conjugate compounds based on said ranking, wherein said plurality of low aggregation ligand-drug conjugate compounds is a portion of said plurality of ligand-drug conjugate compounds having an aggregation number indicative of a predicted molecular aggregation lower than the predicted molecular aggregation of a remaining ligand-drug conjugate compounds within said plurality of ligand-drug conjugate compounds.

The invention discloses a fish gelatin jelly gel performance evaluation method based on multi-scale correlation analysis, which comprises the following steps: extracting multi-scale characteristics of molecular characteristics, network structures and macro performance of three fish gelatin jellies, performing data correlation based on three dimensions of molecular characteristics-network structures-macro performance, and combining a stoichiometric analysis method to evaluate the gel performance of the fish gelatin jellies. And a multi-level systematic evaluation system is constructed. According to the method, data of molecular characteristics (secondary structure ratio, particle size, Zeta potential and amide A wave number), network structure (aperture size) and macroscopic performance (imino acid content and gel strength) are integrated to construct the relevance of molecular characteristics-network structure-macroscopic performance, and full-dimensional analysis of the quality of the fish gelatin jelly is realized for the first time. The method breaks through the limitation that the traditional method only depends on single indexes such as protein or collagen content and the like, and clarifies the regulation and control of molecular aggregation behavior, imino acid content and electrostatic interaction on the formation of a gel network.

The invention provides a hyperbranched-like pressure-sensitive adhesive with underwater and under-oil broad-spectrum bonding capability as well as a preparation method and application of the hyperbranched-like pressure-sensitive adhesive. 4, 4 '-diaminodicyclohexylmethane and N, N'-methylene bisacrylamide are adopted and heated in a polar solvent, an out-of-order hyperbranched polymer is formed through a Michael addition reaction, after product molecules are aggregated, a flexible supramolecular polymer with nanoscale water / oil phase separation can be formed, and the flexible supramolecular polymer has the water absorption / oil absorption characteristic. The hyperbranched pressure-sensitive adhesive can rapidly absorb and remove an interface water layer and an interface oil layer on the surface of a base material, and rapid and tight attachment of a product and the base material is achieved; meanwhile, the flexible nanophase separation structure can rotate along with the polarity of the binding face, evolution is matched with the polarity type of the base material, and broad-spectrum bonding is achieved.

The present invention relates to a molecular association of a bile acid or a bile salt and a composition containing the same, and more specifically, to a skin-permeable formulation of deoxycholic acid, a lipolytic pharmacological agent, which has been developed as an external preparation rather than a conventional injection, and which dramatically improves patient compliance.

A device may receive, by the computer system, a digital chemical structure for each of a plurality of ligand-drug conjugate compounds. A device may calculate by said one or more processors, an aggregation number for each of said plurality of ligand-drug conjugate compounds. A device may rank, by the computer system, at least a portion of said plurality of ligand-drug conjugate compounds based on said aggregation number. A device may identify, by the computer system, a plurality of low aggregation ligand-drug conjugate compounds based on said ranking, wherein said plurality of low aggregation ligand-drug conjugate compounds is a portion of said plurality of ligand-drug conjugate compounds having an aggregation number indicative of a predicted molecular aggregation lower than the predicted molecular aggregation of a remaining ligand-drug conjugate compounds within said plurality of ligand-drug conjugate compounds.

This invention relates to a method for preparing and applying a supramolecular self-assembled hydrophobic surfactant, belonging to the fields of supramolecular coordination chemistry, surface modification engineering, and hydrophobic coating technology. In this invention, 1,8-octanediamine reacts with 4-aldehyde imidazolium to prepare a Schiff base ligand. This ligand can form supramolecular aggregates with the help of zinc ions in a solvent. The aggregates electrically attract 1H,1H,2H,2H-perfluoro-1-ols to their outer surfaces, self-assembling into a supramolecular self-assembled hydrophobic surfactant. This surfactant can be applied in the field of hydrophobic coatings, producing coatings with lotus leaf-like structures and hydrophobic wax properties, exhibiting excellent hydrophobic performance.

The invention discloses large-steric-hindrance nano silicon dioxide as well as a preparation method and application thereof. The large-steric-hindrance nano silicon dioxide comprises the following components in parts by weight: 8-15 parts of nano silicon dioxide, 1-3 parts of an inner-layer modifier and 8-17 parts of an outer-layer modifier. By grafting and modifying the surfaces of the small-diameter nano silicon dioxide particles, the density of hydrophilic groups of the nano silicon dioxide is reduced, meanwhile, the grafted long-chain groups contribute to adhesion of the nano silicon dioxide to the rock surface, a large amount of nano silicon dioxide occupies the rock surface, and adhesion of a thickening agent to the rock surface is reduced; large steric hindrance groups are arranged on the surface of the modified nano silicon dioxide, so that the dosage of the nano silicon dioxide can be effectively reduced, small-particle-size silicon dioxide is prevented from aggregating thickening agent molecules, the thickening agent can be kept in a stretched state, flowing of the thickening agent in tiny pore channels is facilitated, and the fracturing modification effect is improved.

The invention discloses a method for preparing a high-protein solution from hydrophobin through membrane treatment and ultrasonic assistance, and belongs to the technical field of food protein modification and membrane separation. The preparation method comprises the following steps: dispersing hydrophobic protein in an alkaline solution, adding maltodextrin into the alkaline solution, carrying out multiple times of concentration and dilution operation through membrane treatment to remove salt ions and macromolecular aggregates, and then adjusting the pH value of a solution system to be neutral by adopting an acidic solution; the preparation method comprises the following steps: firstly, preparing a solution, then treating the solution under the ultrasonic action to form a micro-nano particle structure with good colloidal stability, and finally, concentrating and drying to obtain powdery protein with high solubility. The soluble protein powder obtained by the invention can be widely applied to vegetable protein drinks, nutritional formula foods and functional foods.

The invention discloses a culture tail water soluble organic matter characteristic analysis method and system, particularly relates to the technical field of water quality monitoring and analysis, and aims to solve the problem that an existing soluble organic matter characterization method is difficult to effectively associate and predict the actual degradation behavior of the soluble organic matter in the biological treatment process. Three-dimensional fluorescence spectrum data and liquid chromatography-organic carbon detection combined analysis data of a water sample to be detected are synchronously obtained, the proportion of hydrophilic and hydrophobic components and the proportion of tyrosine-like and humus-like fluorescence components are obtained through analysis, and then whether remarkable humus-like components exist or not is judged. According to a judgment result, deep analysis on the molecular aggregation state of the humus-like component is selectively started, and related proportion parameters and aggregation state information are integrated, so that evaluation on the biodegradation potential trend of the soluble organic matter is finally realized, and a key basis is provided for stability early warning of a biological treatment system.

The invention discloses a flexible metal-organic hybrid halide with full-phosphorescence optical waveguide characteristics and a preparation method and application thereof. According to the invention, a pyridine derivative and cadmium chloride are self-assembled to synthesize a novel metal-organic hybrid halide material. By regulating the intermolecular acting force of the metal-organic hybrid halide crystal, the elastic deformation and plastic deformation of the material can be respectively realized by utilizing the buffer layer and the molecular slippage region. Meanwhile, due to the rigidity of a molecular aggregation structure, the material shows obvious full phosphorescence emission. The flexible metal-organic hybrid halide prepared by the invention is mechanically stripped, and a multi-channel optical waveguide can be realized in a single crystal. The invention not only shows the mechanical flexibility of the metal-organic hybrid halide, but also develops a multi-channel active full-phosphorescence optical waveguide material by utilizing a molecular slippage region of a crystalline material, and has wide application in the fields of optical information communication and the like.

The invention discloses a method for observing the aggregation state of molecules. Specifically, the invention discloses a method for observing the molecular aggregation state by using a covalent organic framework, and the method is characterized in that the covalent organic framework is COF-300. According to the invention, the dynamic COF-300 is used as a host framework, the organic molecule is used as an object, the structure of the dynamic COF-300 and the aggregation state structure in a nanometer confinement space are analyzed from an atomic scale by using a single crystal X-ray diffraction technology, and further crystallization is not needed.

The present invention relates to the fracturing technology, and in particular to a nano-material-containing composition and a preparation method therefor and a use thereof, and a fracturing fluid. The composition comprises a nano material and a solvent. The hydrodynamic particle size of molecular aggregate of the composition satisfies: D10<30 µm, D50 = 50-150 µm, and D90 = 150-300 µm. The preparation method for the composition comprises: after hydroxylation of gas-phase nanosilicon dioxide in a solvent, making gas-phase nanosilicon dioxide come into contact with a monomer represented by formula (II) in the presence of an initiator, and activating the resulting product and then mixing same with a fluorocarbon surfactant. Also provide are a use of the composition in a fracturing fluid and a fracturing fluid containing the composition. The composition can facilitate rapid flowback of a fracturing fluid from a reservoir, thereby reducing the damage to the reservoirs.

The application provides an organic room-temperature phosphorescent molecule under an aggregate light-emitting performance simulation method and system, obtains a geometric structure, an electronic structure and an aggregate structure through an organic room-temperature phosphorescent molecule structure, carries out calculation on microstructures of exciton coupling, electro-phonon coupling and spin-orbit coupling of the organic room-temperature phosphorescent molecule, researches excited state dynamics of the organic room-temperature phosphorescent molecule according to the microstructures, explores an internal relationship between a molecular aggregate form and the excited state dynamics, realizes controllable construction from a molecular structure, an aggregate form to phosphorescent properties, and provides reliable theoretical guidance for design and research and development of high-performance organic room-temperature phosphorescent molecules.

The present invention relates to a supramolecular self-assembly hydrophobic active agent, and belongs to the field of supramolecular coordination chemistry, surface modification engineering and hydrophobic coating technology. In the present invention, 1,8-octanediamine and 4-aldehyde imidazole react to prepare a Schiff base ligand, which can form a supramolecular aggregate with the help of zinc ions in a solvent, and the aggregate electrically attracts 1H, 1H, 2H, 2H-perfluoro-1-alcohol to self-assemble into a supramolecular self-assembly hydrophobic active agent on its outside. The active agent can be applied in the field of hydrophobic coating, and the coating has the characteristics of imitating lotus leaf structure and hydrophobic wax, and has good hydrophobic properties.