23 results about "Proton acceptor" patented technology

The invention belongs to the field of new energy material synthesis and electro-catalysis, and particularly relates to a chiral molecule coupling layered hydroxide catalyst and a preparation method and application thereof. The invention innovatively provides a synergistic strategy fusing chiral molecular engineering and a bionic design principle to improve the oxygen evolution performance of the nickel-iron layered hydroxide, a one-step hydrothermal method is adopted for preparation, controllable anchoring of chiral molecules between layers of the nickel-iron layered hydroxide is realized, and the performance of the nickel-iron layered hydroxide is improved. Chiral molecules with a proton acceptor function are introduced into a NiFe-LDH interlayer; due to the steric hindrance and coordination characteristics of chiral molecules, regular growth of NiFe-LDH laminates can be disrupted, and more lattice defects, edge sites and unsaturated coordination metal centers are induced to be generated. The coordination effect of chiral molecules and metal centers (Ni and Fe) can adjust the electronic state and valence state of metal, so that the reaction energy barrier is reduced, and the reaction kinetics is accelerated.

The present disclosure relates to a reducing agent for synthesizing a nitrogen-containing compound, the reducing agent containing an electron supplying site and a proton accepting site that is bonded to the electron supplying site.

This document describes a pharmaceutical composition comprising a therapeutic agent, an absorption enhancer, a polymer comprising multiple basic groups, and a non-polymeric (small molecule) proton acceptor. The absorption enhancer is preferably a substituted fatty acid or a salt thereof. This document also describes a method of treating a condition treatable by the therapeutic agent, comprising oral administration of the pharmaceutical composition.

The invention provides a method of continuous electrochemical dinitrogen reduction to produce ammonia, the method comprising: supplying dinitrogen to an electrochemical cell comprising an electrolyte in contact with at least a cathode; introducing protons to the electrolyte by anodic oxidation of a hydrogen-containing species; and cathodically reducing the dinitrogen in the presence of a metal selected from lithium, magnesium, calcium, strontium, barium, zinc, aluminium and vanadium to produce ammonia, wherein the electrolyte comprises a cationic proton carrier capable of reversible deprotonation to form a neutral proton acceptor, wherein the neutral proton acceptor is an ylide.

The invention discloses a regulatable and degradable succinamide ester bond hydrogel as well as a preparation method and application thereof, and belongs to the field of biomedical materials. The hydrogel is formed by covalent cross-linking of a succinate bonded polymer and a high-molecular polymer containing a plurality of amino groups through a succinamide ester bond, the hydrogel utilizes a special cyclization degradation mechanism of a succinamide ester bond, steric hindrance can be adjusted through side group modification, and the amide nitrogen deprotonation rate can be adjusted through modification of proton donor and proton acceptor groups, so that accurate control of the degradation time of the hydrogel is realized, and the degradation time can be from several hours to several months; the hydrogel can be widely applied to the biomedical fields of tissue engineering scaffolds, wound dressings / drug controlled release systems and the like.

The application discloses an organic superlattice material, a lithium-doped organic superlattice material and a preparation method and application thereof, and relates to the technical field of superlattice materials.The organic superlattice material comprises a first organic crystal layer and a second organic crystal layer which are alternately stacked, the first organic crystal layer comprises a network structure formed by a first small-molecule organic compound, and the second organic crystal layer comprises a network structure formed by a second small-molecule organic compound; wherein the first small-molecule organic compound comprises a first monocyclic aromatic compound, and the first monocyclic aromatic compound has a proton donor group; and the second small-molecule organic compound comprises a second monocyclic aromatic compound, and the second monocyclic aromatic compound has a proton acceptor group.A new organic superlattice material is provided, which is applied to a solid-state electrolyte and can improve ionic conductivity.

This invention relates to the field of acyclic or carbocyclic compounds and discloses a method for preparing 6-bromo-2,3-difluorotrifluorotoluene, comprising: dissolving 2,3-difluorotrifluorotoluene in a mixed solvent composed of a polar modifier containing a proton acceptor site and a nonpolar solvent; adding a polyether stabilizer and an iron-based catalyst; and dropwise adding liquid bromine to trigger a directional bromination reaction. The method utilizes the protonated ion-pair complex formed by the in-situ generation of hydrogen bromide and the polar modifier, which, in conjunction with the polyether stabilizer, constructs a sterically hindered shielding structure at positions 4 and 5 of the substrate molecule. This invention forces the electrophilic substitution pathway to be directed towards position 6 of the substrate molecule, overcoming the bottleneck of extremely low positioning accuracy in passivated aromatic ring systems, transforming disordered isomers into a single dominant isomer, thereby reducing separation energy consumption.

The invention provides a polyimide gel composition, polyimide aerogel and a preparation method thereof, a thermal insulation coating, a functional element and electronic equipment. The imide gel composition comprises polyamide acid sol, a first additive and a second additive, the first additive comprises a proton acceptor compound, and the second additive comprises an amino acid compound. The polyimide gel composition provided by the invention can be used for preparing polyimide aerogel, and the obtained polyimide aerogel has low thermal conductivity and low dielectric constant at the same time, and is suitable for providing insulating parts with lower thermal conductivity for various electronic devices.

The present invention relates to a yellowing-resistant hot melt adhesive diaphragm for hydrogen fuel cells and a preparation method thereof, belonging to the technical field of hydrogen fuel cells. The diaphragm comprises, by weight percentage: 8.5-10 wt% of an organic-inorganic framework compound, 1.5-2.1 wt% of an organosilicon dispersant, 0.8-1.4 wt% of a nano filler, and 0.4-0.6 wt% of a coupling agent, with the balance being a casting solution resistant; the organic-inorganic framework compound is self-assembled by an in-situ polymerization method from a composite inorganic coordination matrix with a porous structure and pyrrole monomers to form an organic-inorganic network structure cross-linked with nitrogen-containing heterocycles, providing a large number of coordination sites as proton acceptors and having good proton conduction ability, and the casting solution resistant uses a substitution product of trifluoroethanol and vinylphenyl dichlorosilane as a modified monomer and is block copolymerized with low molecular weight polypropylene to introduce fluorine-containing groups to improve the aging resistance of the polymer.

The invention relates to a method for detecting hydrazine hydrate by using a 2-(4-bromo-2-hydroxybenzylidene) malononitrile probe with zero background fluorescence. The method comprises the following steps: carrying out a Schiff base reaction on hydrazine hydrate and a recognition site dicyanovinyl group in the 2-(4-bromo-2-hydroxybenzylidene) malononitrile probe to generate an imine bond as a proton receptor; and a proton transfer process in excited-state molecules is triggered by a proton donor hydroxyl group at an ortho-position of the hydrazine hydrate, so that the hydrazine hydrate is identified and detected. Under irradiation of a 395 nm excitation lamp, after hydrazine hydrate is detected by the probe 2-(4-bromo-2-hydroxybenzylidene) malononitrile, the fluorescence is changed from colorless to obvious blue green, the detection time is 1 s, the detection limit is as low as 0.46 nM, the probe has high selectivity to hydrazine hydrate, and other common 18 potential interferents do not interfere with detection. In addition, by constructing the silicon-based porous sensing material loaded with the probe 2-(4-bromo-2-hydroxybenzylidene) malononitrile, rapid and specific recognition of hydrazine hydrate steam is achieved, and the application prospect is wide.

The application discloses an absorption-delivery system for flue gas carbon dioxide capture, which is composed of a hydrophobic high-boiling point hydrophilic absorbent with a very high absorption rate and a high cycle load, and is used for absorbing and delivering carbon dioxide; the absorption-delivery process is that the hydrophobic absorbent directly contacts the flue gas, quickly absorbs CO2, and then reacts to generate a product, then the hydrophobic absorbent contacts the hydrophilic absorbent, the CO2 molecules in the product are delivered to the hydrophilic absorbent by using the strong interaction between the hydrophilic absorbent and the CO2 molecules or the strong proton acceptor characteristics of the hydrophilic absorbent, so that the hydrophobic absorbent is released and reduced, and then contacts the flue gas again to absorb CO2, thereby realizing the recycling of the absorbent. Compared with traditional hydrophilic absorbents, the CO2 absorption-delivery system has the advantages of a fast absorption rate, a low regeneration energy consumption and long-term stability.

The invention belongs to the technical field of inorganic gelling agent additives, and particularly relates to a strength deterioration resistant additive for flocculation and dehydration of cement residues, a synchronous grouting material and a preparation method of the synchronous grouting material, and the synchronous grouting material comprises the following components in parts by mass: 0.1-2 parts of a strong electron acceptor; 0.1-1 part of a strong proton acceptor; 0.1-2 parts of a high-charge metal ion compound; 90-180 parts of industrial solid waste; the strong electron acceptor is persulfate; the strong proton acceptor is cesium hydroxide or / and rubidium hydroxide; the high-charge metal ion compound is selected from at least one of ferric nitrate, ferric sulfate, aluminum nitrate or aluminum sulfate; the industrial solid waste is common industrial solid waste and superfine industrial solid waste. The synchronous grouting material has the advantages of being high in stability, excellent in mechanical property, low in cost, environmentally friendly, low in carbon and the like, and high-added-value utilization of dewatered cement slag type waste is achieved easily.

Disclosed in the present invention are a preparation method for and the use of an amino-functionalized adsorbent material with highly dispersed active sites. The preparation method comprises: loading a graphene aerogel into a tubular furnace, and subjecting same to thermal reduction treatment; loading a thermally reduced sample into a plasma vapor deposition tube, and under vacuum conditions, subjecting the sample to plasma treatment in different atmospheres, so as to prepare a carrier; and drying the carrier overnight, placing a polyamino organic amine and the carrier into a reaction kettle, heating same in a blast oven, then taking out a reaction product, removing the organic amine attached to the surface thereof, soaking same in ethanol, and drying same in the blast oven overnight, so as to obtain the material. In the amino-functionalized adsorbent material of the present invention, a large number of point defects are manufactured on a carbon material by means of thermal reduction and plasma treatment, additional proton acceptors are introduced, and different organic amines are grafted. By means of the preparation method provided by the present invention, the amino-functionalized adsorbent material, in which the loading amount of amino groups can be flexibly regulated and controlled to achieve high dispersion of amino molecules and the proton transfer can be enhanced to improve the adsorption performance, can be prepared.

A composition usable for removing biofilm and necrotic or infected tissue from a skin lesion, comprising ethanesulfonic acid or 1-propanesulfonic acid and a proton acceptor. The proton acceptor is selected from the group consisting of dimethyl sulfoxide, silicon dioxide, tetraethoxysilane, and mixtures thereof. This composition can be prepared in gel form.

A CO2 absorbent, an enhanced amine-based flue gas decarbonization method, and a decarbonization device. The absorbent is mainly composed of a shuttle agent and a proton acceptor; the molar ratio of the shuttle agent to the proton acceptor is 1:1-1:5; and the molar ratio of the shuttle agent to the proton acceptor is 1:3. By preparing the absorbent and introducing, into the absorbent, flue gas that has been broken into micro-bubbles, the micro-bubbles, under the action of a drag force, can move in synchrony with a liquid phase, thereby forming a uniform gas-liquid mixture, enhancing the cyclic loading of the absorbent, reducing the overall energy consumption of a decarbonization process, and improving CO2 removal efficiency.

The invention relates to the technical field of fluorescence sensing and biological imaging, and particularly discloses a viscosity fluorescent probe based on an ESI PT mechanism as well as a preparation method and application of the viscosity fluorescent probe based on the ESI PT mechanism, and the molecular structure general formula is as follows: a large conjugated system with a rigid plane is used as a fluorophore, a proton donor group (hydroxyl-OH) and a proton acceptor group (azacyclo), the structural characteristics are used for ensuring that molecules can generate efficient intramolecular proton transfer in an excited state, and in addition, the specific electron withdrawing group-cyanopyridine salt is introduced in the molecular design of the probe, so that the molecular weight of the probe is increased, and the molecular weight of the probe is increased. And the fluorescence characteristic is highly sensitive to the viscosity change of the microenvironment. The ESIPT mechanism viscosity fluorescent probe has the advantages of high sensitivity, good biocompatibility, simple and convenient preparation method and the like, and can be used for detecting the viscosity change in human hepatoma cells HepG2 and zebrafish.

The invention provides a CoP / Ni5P4 / FeP nano material as well as preparation and application thereof, and the CoP / Ni5P4 / FeP nano material takes a carbon material as a carrier and contains CoP, Ni5P4 and FeP. The adopted transition metal phosphide has good conductivity and electrochemical stability, negative phosphorus atoms with strong electrostatic affinity are arranged in the transition metal phosphide, and the transition metal phosphide can be used as a proton acceptor and is beneficial to catalyzing the hydrogen production process; abundant active sites can be designed by means of morphology regulation, element doping, defect engineering and the like, for example, the superficial area of the catalyst can be increased by constructing different forms of catalysts, so that more abundant catalytic active sites are created, and particularly, an electrolyte diffusion path can be shortened and the active sites can be more effectively exposed by adopting a nanosheet structure; meanwhile, the conductivity is enhanced, and the catalytic efficiency is improved.

The present invention relates to a method for purifying a nucleic acid from a sample containing the nucleic acid in a simple, short-time and high-purity manner, and a kit for the purification. This method for purifying a nucleic acid comprises a step for bringing a sample containing a nucleic acid into contact with a zeolite and a proton acceptor.

In an embodiment of the present invention, there is provided a reagent layer comprising a polymer containing a proton accepting group in a repeating unit and having a pH buffering ability, and an oxidoreductase that oxidizes or dehydrogenates an analyte.

The invention discloses an organic superlattice material, a lithium-doped organic superlattice material and a preparation method and application thereof, and relates to the technical field of superlattice materials. The organic superlattice material comprises a first organic lattice layer and a second organic lattice layer which are alternately stacked, the first organic lattice layer comprises a network structure formed by a first small molecular organic matter, and the second organic lattice layer comprises a network structure formed by a second small molecular organic matter; wherein the first small molecular organic matter comprises a first monocyclic aromatic compound, and the first monocyclic aromatic compound has a proton donor group; the second micromolecular organic matter comprises a second monocyclic aromatic compound, and the second monocyclic aromatic compound has a proton acceptor group. The invention provides a novel organic superlattice material which is applied to a solid electrolyte and can improve the ionic conductivity.

The invention discloses an antioxidant three-component ionic liquid absorbent for directly trapping carbon dioxide from air, which is characterized in that a proton acceptor and a proton donor are subjected to proton transfer to obtain ionic liquid, and the ionic liquid, a stabilizer and an organic aid form a three-component compound absorbent system. The stability of the ionic liquid compound absorbent is improved and the viscosity of the ionic liquid compound absorbent is reduced by adjusting the variety and proportion of the stabilizer and the organic additive in the ionic liquid compound system. According to the ionic liquid three-component compound absorbent system, the absorption rate and the absorption capacity in the gas absorption process can be improved, and efficient and direct air trapping of carbon dioxide is achieved.

The present invention further relates to a composition comprising methanesulfonic acid and a non-aqueous proton acceptor for use in a method for the treatment and management of one or more of fistula, pilonidal sinus, herpes labialis, pyogenic granuloma, fungal nail infection and onicocriptosis.

Aqueous anolytes for redox flow batteries are disclosed. The anolytes include a fluorenone-fluorenol derivative, an additive comprising an organic compound including one or more proton acceptor groups, an alkali metal hydroxide, and water. The additive functions as a homogeneous organocatalyst and may increase the current density of an aqueous redox flow battery including the anolyte.