53 results about "Solvent molecule" patented technology

Described herein are lithium-metal rechargeable electrochemical cells comprising a lithium-metal negative electrode, a positive electrode, and a liquid electrolyte. The liquid electrolyte comprises a core mixture and a diluent. The diluent comprises a fluorinated ether. The core mixture comprises a set of salts and a set of solvents. The set of solvents comprises a pyrrolidinium-containing ionic liquid and a molecular solvent. The molecular solvent is a non-fluorinated ether, for example including but not limited to 1,2-dimethoxyethane. In some examples, the electrolyte further comprises an electrolyte additive, for example including but not limited to tris(trimethylsilyl)phosphate. In some examples, the set of salts comprises one or more imide-containing lithium salts. In some examples, the set of salts comprises lithium bis(fluorosulfonyl)imide and an additional salt and the mole fraction of lithium bis(fluorosulfonyl)imide in the set of salts is 0.5 or greater.

The invention discloses a preparation method and application of a polymer membrane based on solvent in-situ functionalization enhancement. The method comprises the following steps: dissolving a polymer raw material by adopting a polymerizable solvent to form a homogeneous membrane casting solution; then synchronously carrying out ultraviolet light induced polymerization on the residual solvent in the membrane in the membrane casting liquid phase separation forming process by utilizing a constant-temperature circulating coagulating bath carrying an ultraviolet light illumination system; performing drying treatment to obtain a flat plate / hollow fiber composite membrane; the method is applied to the aspects of seawater desalination, wastewater treatment, food processing, biological medicine, energy chemical industry and the like. By utilizing dual functions of the solvent, polymerized solvent molecules and macromolecular chains form a stable cross-linked interpenetrating network structure, functional design of the membrane is realized through customizability of the solvent, functionalization enhancement of the membrane is realized while the process is simplified, ultraviolet polymerization synchronously optimizes phase separation kinetics, and the performance of the membrane is improved. Uniform surface pore size distribution and efficient mass transfer channels are formed, and the advantages of high efficiency and customizability are shown.

The invention discloses a perovskite material solution, a perovskite film and a preparation method and application thereof, and the preparation method of the perovskite material solution uses a high-boiling-point solvent as an independent additive, specifically, after a perovskite precursor is completely dissolved and filtered, the high-boiling-point solvent (a single or composite system) is quantitatively added, and the perovskite material solution is prepared. Subsequent preparation of the perovskite film can achieve the following effects by accurately controlling the vacuumizing rate and the processing time: (1) the crystallization window period is prolonged due to the slow evaporation characteristic of the high-boiling-point solvent, perovskite crystal grains are promoted to grow orderly, a uniform and compact film microstructure is formed, internal stress accumulation caused by rapid crystallization is effectively relieved, and the performance of the perovskite film is improved; the cracking risk is obviously reduced; and (2) solvent molecules are preferentially enriched in a grain boundary region in a deposition process, and uncoordinated Pb < 2 + > defects are passivated through coordination, so that the defect density of the thin film is reduced, and the photoelectric conversion efficiency of a device is improved.

The invention relates to the field of deep processing of graphite materials, in particular to application of a deep eutectic solvent in graphite purification and a graphite purification method. According to the preparation method, the eutectic solvent and the graphite oxide are subjected to mixed reaction, and eutectic solvent molecules and oxygen-containing functional groups on the surface of the graphite oxide form strong hydrogen-bond interaction through rich hydrogen bond sites in the reaction process, so that on one hand, a graphite oxide sheet layer can be further stripped; on the other hand, impurities such as metal cations (such as K, Na, Ca and Mg) embedded between graphite layers can be effectively complexed and extracted, a soluble complex is formed, and therefore efficient separation of the impurities and a graphite framework is achieved. The fixed carbon content of the graphite material obtained through the technical means can reach 98% or above, and preferably, when hydrogen bond donors in the eutectic solvent are ethylene glycol and urea, the fixed carbon content can reach 99% or above.

To provide a method and a device for collecting energy by nano unidirectional valve penetration.SOLUTION: The present invention includes technical principle and method for energy collection by penetration that is proposed on the basis of principal and penetration effect of a nano unidirectional valve. Two semi-permeable membranes 2-1 are provided, a solution 2-2 is filled, and the same is combined with a concentration control module 2-3, thereby controlling a concentration at a semi-permeable membrane boundary, differing solution concentrations in the vicinity of two semi-permeable membranes, realizing control of osmotic pressure, achieving effect of unidirectional valve action, rectifying disorder and high-speed thermal motion of solvent molecules to regular unidirectional flow automatically, forming potential energy of a liquid level or kinetic energy of liquid flow, and using the same for energy storage or power generation. The kinetic energy by thermal motion of molecules is extracted from environment to generate power, and electric energy is returned to environment after consumption thereof, and is used again for power generation.SELECTED DRAWING: Figure 3

The embodiment of the invention relates to a processing method and device for predicting photoelectric characteristics of solvent molecules. The method comprises the following steps: constructing a deep learning model for predicting various photoelectric characteristics of the solvent molecules, and recording the deep learning model as a corresponding multi-task prediction model; constructing a model training data set and recording the model training data set as a corresponding first data set; training the multi-task prediction model based on the first data set; after model training is finished, solvent optimization processing is conducted on batch optimization tasks input by the user through the multi-task prediction model, and a processing result is fed back to the current user. The method can reduce the analysis complexity, shorten the analysis time, improve the analysis efficiency and improve the prediction accuracy.

The invention discloses a solid fluorescent material based on a tetraphenylethylene derivative and application of the solid fluorescent material in water content detection. On the basis of the special structure and functional design of a hydrogen bond organic framework, the spatial distribution and interaction mode of structural solvents (such as dimethyl sulfoxide and DMSO) and adsorption solvents (such as methanol, water and acetone) in the framework are accurately controlled, and on the premise that the integrity of a crystal structure is kept, the preparation method is simple and easy to implement. And reversible exchange and real-time optical monitoring of solvent molecules in the pore channels are realized. The material can generate obvious fluorescence color change (467-602nm) along with the change of the environmental water content, and has the advantages of high response speed, high sensitivity, good thermal stability and good recycling performance.

The application provides a solvent complex prediction model generation method, device and equipment and a solvent complex prediction method, device, equipment and computer readable storage medium based on the solvent complex prediction model. The solvent complex prediction model generation method comprises: obtaining training data, wherein the training data comprises positive samples and negative samples, the positive samples comprise a plurality of small molecule compounds and information of solvent molecules capable of forming solvent complexes with the plurality of small molecule compounds respectively, the negative samples comprise a plurality of small molecule compounds and information of solvent molecules incapable of forming solvent complexes with the plurality of small molecule compounds respectively; and an initial neural network model is trained according to the training data to obtain a solvent complex prediction model. The application can efficiently, quickly and at low cost recommend solvent molecules capable of forming solvent complexes for a given small molecule compound.

The application discloses a hydrogen-bonded organic framework material and a preparation method and application thereof; the hydrogen-bonded organic framework material comprises an organic ligand and an organic solvent molecule, and a chemical formula of the hydrogen-bonded organic framework material is [(L) x (G) y ], wherein L is 1,3,6,8-tetra (4-methoxyphenyl) pyrene, G represents a good solvent; x=1-2, and y=1-4. In the HOFs construction, different solvent molecules are introduced, a hydrogen-bonded organic framework material with adjustable multi-color light emitting characteristics of fluorescence and phosphorescence is constructed, the material is controlled from blue light to blue-green light to yellow-orange light, and the fluorescence and the phosphorescence are controlled in the hydrogen-bonded organic material containing different solvents. The application provides a new way for constructing multi-emitting materials by using a single molecule platform.

The invention discloses a difunctional aqueous zinc ion battery high-voltage electrolyte and a preparation method and application thereof, and belongs to the technical field of aqueous zinc ion batteries. The electrolyte is prepared from the additive with the structural general formula that R groups are hydroxyl, carboxyl, acetyl and methoxyl, and the additive contains oxygen atom-containing functional groups capable of serving as hydrogen bond acceptors, so that the water-phase solubility of molecules can be remarkably improved, the electrolyte ion concentration can be adjusted through specific interaction with solvent molecules, and the service life of the electrolyte is prolonged. The solvation sheath structure of zinc ions is regulated and controlled by reducing the number of solvent molecules. Meanwhile, the functional group containing the oxygen atom serving as the hydrogen bond acceptor is a strong electron withdrawing group and can interact with water molecules to form intermolecular hydrogen bonds, the oxygen atom can serve as an electron donor, and the hydrogen atom of water serves as a proton donor to destroy the original hydrogen bonds and tetrahedral structures of the water molecules, so that the water molecules can be absorbed. And the formation of a hydrogen bond network of water molecules is blocked, so that the corrosion side reaction and hydrogen evolution behavior caused by water are effectively inhibited.

The present application belongs to the field of chemical thermodynamics, and particularly relates to a thermodynamic model for predicting the thermodynamic properties of a salt-solvent system. The model first obtains the coordination number n of cations and anions in the salt-solvent system through molecular dynamics simulation, then obtains the initial configuration of the cation-n solvent molecule-anion through configuration optimization, and obtains the most stable structure through quantum chemistry calculation program optimization, and finally obtains the VLE (vapor-liquid equilibrium) data prediction value of the salt-solvent system based on the COSMO-RS theory. The model can obtain the prediction value with high accuracy without experiment, thereby saving a large amount of manpower, material resources and financial resources. Meanwhile, the present application also discloses the phenomenon that the salt in the salt-solvent system is volatile.

A photovoltaic device, a photovoltaic module, a power generation apparatus and an electric apparatus. The photovoltaic device comprises a perovskite absorption layer, which comprises a perovskite material and a passivation material, wherein the content of the number of solvent molecules in the perovskite absorption layer is less than or equal to 0.004 on the basis of the number of molecules of the perovskite material. The photovoltaic device has improved energy conversion efficiency and device stability.

The invention provides soluble thermoplastic polyimide resin and a preparation method thereof, a coating, a composite film and a flexible copper-clad plate. According to the invention, large-volume functional groups are concentrated in an X chain segment and enter a molecular main chain in the form of a block structure, so that the distance between molecular chains can be further increased, solvent molecules enter wound molecular chain groups, and the effect of increasing the solubility is achieved. Moreover, while the solubility is enhanced, the proportion of large-volume functional group monomers can be reduced by the block structure, and the influence of the large-volume functional group monomers on the flexibility of a molecular main chain is reduced. Therefore, the polyimide resin provided by the invention still has a relatively low glass transition temperature.

The invention is applicable to the technical field of chemical materials, and provides a method for regulating and controlling luminescence of Au nanoclusters by solvent-induced ligand isomerization, which comprises the following steps: firstly, synthesizing the gold nanoclusters with different surface isomer proportions by regulating the pH value of a reaction system; au (I)-thioketone and Au (I)-mercaptan isomer are induced to be reversibly converted by utilizing the interaction of solvent molecules and a cluster surface ligand structure, and proton coupling electron transfer kinetics is cooperatively regulated, so that the precise regulation of the luminescence property of the gold nanocluster is realized. According to the present invention, the wide band and the continuous reversible adjustment of the light-emitting wavelength in the range of 495-800 nm can be achieved under the mild condition, the light-emitting quantum yield can be significantly improved, and the method has advantages of simple operation, clear mechanism, greenness and universality, and has application prospects in the fields of biological imaging, optical sensing, light-emitting devices and the like.

The invention belongs to the technical field of pharmaceutical chemical crystallization, and particularly relates to tripterine, a crystal form of a solvate of the tripterine, a preparation method and application of the tripterine. The crystal form is a co-crystal of the tripterine and a solvent, and the ratio of the tripterine to the solvent is (45-200) mg: (1-30) mL. And the solvent is selected from C1-C4 alcohol solvents, C3-C5 ester solvents and non-polar solvents. 22 solvates and one novel polymorphic form are prepared by slurry conversion and solvent evaporation methods. The solvate is of a unique channel type structure, and solvent molecules are embedded into a three-dimensional framework constructed by a tripterine hydrogen bond network through hydrogen bonds and Van der Waals interaction. The stability of the crystal obtained by the polar solvent is obviously superior to that of the non-polar solvent, the structure-function relationship among the solvent polarity, the crystal structure and the thermal stability is clarified, and a theoretical basis and experimental guidance are provided for the preparation design of the tripterine medicine.

The application discloses a wear-resistant, anti-falling and acid-resistant paint and a preparation method thereof, and relates to the technical field of paints. In the application, dopamine is modified by methacryloyl chloride to promote the base to maintain an intact structure in an acidic environment, and the polar groups in the dopamine form Van der Waals force with the surface of the base material, so that the effects of wear resistance, anti-falling and acid resistance are achieved. In addition, m-xylylene diisocyanate is used as a hard segment, D-iditol and 3-aminopropyl pentamethyl disiloxane are used as soft segments, and a network cross-linking structure high polymer is prepared, so that the base is endowed with strong cohesive force, and the wear resistance and anti-falling performance are enhanced. In addition, the phenolic hydroxyl groups in the dopamine and the amino groups in the 3-aminopropyl pentamethyl disiloxane are oxidized and self-polymerized under weak alkaline conditions, so that the base can be attached to almost all substrates. Then, by increasing the content of isocyanate groups in the base, the molecular chain segments are closely packed, so that solvent molecules are difficult to penetrate, and the acid resistance effect is enhanced.

The application provides a soluble thermoplastic polyimide resin, a preparation method thereof, a coating, a composite film and a flexible copper-clad plate. The application concentrates bulky functional groups in X segments and enters the molecular main chain in a block structure, so that the molecular chain spacing is further increased, the solvent molecules enter the inside of the entangled molecular chain group, and the solubility is increased. Moreover, while the solubility is increased, the block structure can reduce the proportion of the bulky functional group monomers and reduce the influence of the bulky functional group monomers on the flexibility of the molecular main chain. Thus, the polyimide resin of the application still has a low glass transition temperature.

The present application belongs to the field of organic solvent nanofiltration membrane, and particularly relates to a novel silk nanofiber composite membrane for introducing a crystalline self-porous polymer COF-TAPT-BTA into silk nanofiber SNF and used for organic separation and recovery, a preparation method and application thereof. The silk nanofiber has three-dimensional stereoscopic pores and flexible structure, which ensures the porosity and pore connectivity of the selection layer. The introduction of the COF can also provide additional, fast solvent molecule transfer microchannels, improve the permeation rate of solvent molecules, and realize the synchronous improvement of flux and solute selectivity.

The invention relates to a polar aprotic organic solvent for dissociating a streptavidin-biotin conjugate as well as a screening method and application of the polar aprotic organic solvent. Aiming at the problems that a streptavidin-biotin conjugate system is difficult to elute quickly under a mild condition and a carrier is difficult to regenerate, a solvent molecule descriptor database is constructed; a polar aprotic organic solvent which meets specific molar refractive index and polarity parameters and is a non-hydrogen bond donor is screened from a large number of candidate solvents by utilizing a machine learning model. The solvent can realize rapid reversible dissociation of biotin conjugates from streptavidin at room temperature, and the carrier still keeps high activity after multiple rounds of binding-elution cycles. The solvent is further used for purification of biotinylated small molecules in a crude reaction solution, enrichment and elution of mitochondria and cell surface samples and the like, topological resolution proteomics analysis is achieved, a high-purity product can be obtained in a high-flux mode, and site level topological analysis can be completed.

This invention discloses a method for activating metal-organic framework (MOF) materials using a high-gravity rotating packed bed, comprising the following steps: 1) adding the MOF material to a solvent to obtain a MOF material suspension; 2) controlling the temperature and sealing the high-gravity rotating packed bed, and introducing the MOF material suspension into the high-gravity rotating packed bed through the inlet; setting the rotation speed of the high-gravity rotating bed, starting the motor, and continuously activating for 0.05-6 hours, then removing the material to complete the activation; 3) centrifuging, filtering, and drying the activated MOF material suspension to obtain the activated MOF material. This method can accelerate the dissolution / diffusion process of unreacted metal salts, organic ligands, and solvent molecules used in synthesis within the pores of MOF materials in the activation solvent, achieving highly efficient activation of MOF materials and significantly shortening the activation time.

A nano check valve osmosis and energy collection method and device are provided, which includes principles and methods of osmosis and energy collection technology proposed based on principles of nano check valves and osmotic effects. By providing two semipermeable membranes and filling a solution, cooperating with a concentration control module, solution concentrations at interfaces of the semipermeable membranes are regulated. This ensures that concentrations near the two semipermeable membranes are different, allowing for regulation of osmotic pressure and creation of a check valve effect. It automatically rectifies disordered, high-speed thermal motion of solvent molecules into an orderly unidirectional flow, forming potential energy of the liquid level or kinetic energy of liquid flow for energy storage or power generation. The device can extract molecular thermal kinetic energy from the environment to generate electricity, without consuming energy resources or increasing the Earth's temperature rise.

The invention discloses a method for exploring the influence of electromagnetic waves on a protein structure directly based on molecular dynamics simulation. The method comprises the following steps: acquiring target protein from a protein database; constructing a simulation system; adding a protein force field and a water molecule model; solvent molecules and ions are added to neutralize system charges, and energy minimization treatment is carried out; pre-balancing is carried out under the NVT ensemble and the NPT ensemble; performing molecular dynamics simulation on the simulation system, and storing an atomic coordinate trajectory; and performing post-processing on the track file, extracting distance time sequence data between atoms or residues, screening out atom pairs or residue pairs meeting conditions, performing Fourier transform analysis, and judging whether the possibility of resonance with the electromagnetic wave with the specific frequency exists or not. According to the method, the interaction between the protein and the electromagnetic field can be revealed under the atomic resolution without consumption of experimental materials, and an efficient and reliable molecular-level theoretical basis is provided for evaluating the biological effect of environmental electromagnetic radiation.

The invention discloses a light / acid / solvent triple response type MOF (Metal Organic Framework) material as well as a preparation method and application thereof, and relates to the technical field of metal complexes. The MOF material is obtained through design synthesis: [M (tpt) (tpdc-4F) (NOH)] n; wherein M is any one of IIB group elements such as Cd and Zn; tpt is 2, 4, 6-tri (4-pyridyl)-1, 3, 5-triazine, and tpt is 2, 4, 6-tri (4-pyridyl)-1, 3, 5-triazine; tpdc-4F is 3, 3 ', 5, 5'-tetrafluoro-[1, 1 ': 4', 1 '-terphenyl]-4, 4'-dicarboxylic acid, NOH is C1-C4 alcohol molecules, a three-dimensional network structure is formed through coordination of metal nodes, tpt and tpdc-4F ligands, and the response sensitivity is met when NOH is replaced by solvent molecules under the illumination condition and the acid environment.

The application discloses a silicon-based negative electrode electrolyte, a preparation method and application thereof, and is a novel electrolyte which can form a special solvation structure and stabilize an electrode interface. The electrolyte replaces ester solvents with ether solvents to prevent the reaction between lithiated silicon and carbonates, and selects a single-oxygen ether as a main solvent in the electrolyte. The single-oxygen ether has an ether bond at only one end, so that the solvent molecules have weak coordination with lithium ions, while the anion groups in lithium salts have strong coordination with lithium ions. A contact ion pair (CIP) and an aggregate ion pair (AGG) solvation structure are formed in the electrolyte, more anion groups participate in the SEI process, an interface layer rich in inorganic components is formed on the electrode surface, and the cycle of the electrode is stabilized.

The invention provides a photovoltaic device, a photovoltaic module, a power generation device and a power utilization device, the photovoltaic device comprises a perovskite absorption layer, the perovskite absorption layer comprises a perovskite material and a passivation material, and based on the molecular number of the perovskite material, the molecular number content of solvent molecules in the perovskite absorption layer is less than or equal to 0.004. According to the invention, the energy conversion efficiency and the stability of the photovoltaic device can be improved.

The invention relates to the technical field of semiconductor packaging, and discloses a high-yield wafer laser cutting protection liquid. Comprising the following raw materials in parts by weight: 8-30 parts of water-soluble acrylic resin, 0.5-5 parts of an ultraviolet absorbent, 5-20 parts of a PMA solvent, 0.1-2 parts of a water-soluble flatting agent, 0.1-3 parts of a wetting agent, 0.5-1 part of a silane coupling agent and 50-85 parts of ultrapure water. According to the high-yield wafer laser cutting protection liquid and the preparation method thereof, the water-soluble acrylic resin and the PMA solvent are selected, the water-soluble acrylic resin and the PMA solvent have good intersolubility, and the silane coupling agent is matched to promote combination between resin and solvent molecules, so that the compatibility of a system is enhanced; in the preparation process, the components are added according to a specific sequence and fully stirred, so that the components are uniformly dispersed, the formed protective film is compact and stable, local cracking or falling during cutting can be effectively avoided, edge fragmentation and surface scratches of the wafer are inhibited, and the protection effect is improved.

This invention discloses a method for preparing krill oil with high phospholipid content, comprising the following steps: 1) mixing Antarctic krill oil with 90% ethanol, adding lipase B to react, enzymatically hydrolyzing the triglycerides in the Antarctic krill oil to release free fatty acids, which then combine in situ with ethanol to form fatty acid ethyl esters; 2) removing the solvent by rotary evaporation under reduced pressure; 3) removing the fatty acid ethyl esters by molecular distillation. Through this method, an Antarctic krill oil concentrate with a phospholipid content of over 90% is obtained. The entire process effectively avoids the damage to phospholipids and active ingredients caused by high temperature and oxidation. This invention does not use potentially harmful organic substances in the preparation process, ensuring the product's safety and reliability, and its applicability in food or pharmaceutical preparation. The preparation process of this invention is simple and suitable for large-scale industrial application.

The invention provides a method for refining lactide, which comprises the following steps: mixing crude lactide with a mixed solvent which is a mixture of a benign lactide solvent and a poor lactide solvent, fully dissolving the mixture, separating solid from liquid after the benign lactide solvent accounts for 0.2-10wt% of the mixed solvent, washing the solid with low-carbon alcohol, and drying the washed solid to obtain the high-purity lactide. And drying to obtain a lactide product. According to the method, the structural similarity of solvent molecules and solute molecules is utilized, lactic acid, lactic acid polymers, pigments and other impurities in crude lactide are dissolved by using a poor solvent of lactide, and m-lactide is dissolved by using a small amount or a trace amount of a good solvent, so that the loss of the product lactide is reduced to the minimum; the mixed solvent can remove impurities except for the lactide product at one time, the obtained primarily refined lactide can be obtained more simply, the optical purity of the primarily refined lactide can reach 99.0% or above, and the yield of the lactide can reach 97% or above.

The application relates to the technical field of lithium metal batteries, and discloses an electrolyte suitable for extreme working conditions, a lithium metal battery and application of the electrolyte. The electrolyte suitable for extreme working conditions is composed of a lithium salt, a main solvent and a fluorinated ether diluent, the main solvent is an ether solvent with a side chain methyl, the molar concentration of the lithium salt is 0.8-1.5 mol / L, and the volume ratio of the main solvent to the fluorinated ether diluent is 1:0.5-2. ‑1 The electrolyte system disclosed by the application not only reduces the direct chemical corrosion of the fluorinated diluent TTE on lithium metal, but also significantly inhibits the oxidative decomposition of solvent molecules on the positive electrode surface under high pressure through the weak solvation characteristics and moderate anion coordination of DMP; the electrolyte system realizes the synergistic regulation of the solvation structure of lithium ions, the interface film forming behavior and the ion transport kinetics, in-situ constructs a SEI / CEI interface film layer rich in inorganic components and mechanically stable on the surface of a lithium metal negative electrode and a high-nickel positive electrode, and fundamentally inhibits the growth of lithium dendrites, slows down the degradation of the positive electrode structure and reduces the interface side reaction rate.

This invention belongs to the field of efficient coal conversion and utilization technology, specifically a method for modifying coal using a solvothermal method and the modified coal. Coal is mixed with an organic solvent in a sealed container for heat treatment, followed by vacuum distillation to remove the solvent. After cooling, modified coal is obtained. During the heat treatment, solvent molecules penetrate and act on the macromolecular network of the coal, selectively breaking weak chemical bonds such as aliphatic side chains and ether bonds. This moderately dissociates and activates the inherent three- to five-ring aromatic clusters in the coal, forming a colloidal precursor rich in active small molecules. Then, direct vacuum distillation occurs, resulting in mild structural rearrangement and physical cross-linking, ultimately forming a uniform, dense, and highly adhesive solid modified coal product.