29 results about "Two-dimensional polymer" patented technology

The present invention provides a method for preparing a gel polymer electrolyte membrane, comprising the following steps: blending a two-dimensional polymer carboxylate with a hydrophilic monomer, adding a cross-linking agent and a first initiator thereto, and reacting under light conditions to obtain a film; dialyzing and soaking the film to obtain a gel polymer electrolyte membrane; the two-dimensional polymer carboxylate preparation method is as follows: subjecting 3,5-diaminobenzoic acid and acryloyl chloride to a substitution reaction to obtain a monomer DBA; subjecting p-aminobenzoic acid and acryloyl chloride to a substitution reaction to obtain a monomer ADA; mixing the monomers DBA and ADA, adding an organic base and a second initiator thereto, and performing a polymerization reaction to obtain the two-dimensional polymer carboxylate. The present invention generates a gel polymer electrolyte membrane by blending the synthesized two-dimensional polymer carboxylate with the hydrophilic monomer. The introduction of the two-dimensional polymer carboxylate brings about stronger ionic interactions, thereby improving the mechanical properties of the membrane.

The invention relates to a composite material as well as a preparation method, application and a product thereof, belongs to the technical field of composite materials, and aims to solve the problems of poor toughness and relatively high expansion coefficient of the composite material so as to improve the barrier property and mechanical property of the composite material product. The composite material comprises a two-dimensional polymer and a high-molecular material matrix, wherein the high polymer material matrix is rubber or plastic. The two-dimensional polymer and the high-molecular material matrix have interface interaction and can better cooperate to bear stress together instead of being separated from each other, so that the overall performance of the material is improved; meanwhile, the two-dimensional polymer can limit thermal motion, caused by temperature, of a molecular structure of a high-molecular material matrix, so that the overall expansion degree of the composite material is reduced.

The invention discloses a preparation method of a Schiff base two-dimensional polymer / cellulose nanofiber heterogeneous ion channel membrane based on an interface super-assembly strategy. Melamine (MA) and benzenetricarboxaldehyde (BTCA) serve as raw materials, two-dimensional polyimide (2DPI) is synthesized through a Schiff base reaction, then the two-dimensional polyimide (2DPI) is stripped into a nanosheet dispersion under the assistance of trifluoroacetic acid (TFA), then the nanosheet dispersion is mixed with a DMSO dispersion of cellulose nanofibers (CNF), and the 2DPI / CNF composite membrane is obtained through super-assembly on a nylon membrane through vacuum-assisted filtration. The prepared composite membrane has good flexibility, water stability and cation selectivity, the 2DPI content is adjustable, and the composite membrane is suitable for nano-fluid devices. The preparation method is simple to operate and low in cost, and a novel ion channel material is provided for the fields of osmotic energy conversion and the like.

The application discloses a conjugated two-dimensional polymer film and a preparation method and application thereof. The preparation method comprises the following steps: placing a copper substrate in a mixed solution containing an organic monomer and a polar solvent, then adding a ligand and performing an interfacial polycondensation reaction, so as to in-situ grow the conjugated two-dimensional polymer film on the surface of the copper substrate. The preparation method provided by the application can in-situ obtain various conjugated two-dimensional polymer films with different bonding connections on the surface of copper. The prepared conjugated two-dimensional polymer film has adjustable pores, a smooth morphology, a controllable thickness and a strong interlayer pi-pi interaction force, and can be widely applied in selective adsorption and separation, photo / electric catalysis, chemical sensing, organic electronics and other fields. Meanwhile, the conjugated two-dimensional polymer film / metal copper composite material prepared in the application can be directly used as an active electrode and applied in electrolytic water, carbon dioxide reduction electrocatalytic reaction and electrochemical seawater uranium extraction.

The application discloses a battlefield in-situ repairing method for multifunctional composite bulletproof armor and belongs to the technical field of bulletproof armor maintenance. The multifunctional composite bulletproof armor is sequentially stacked with a multifunctional energy management surface layer, a gradient transition layer, a main bearing layer, an internal energy absorption layer and an anti-collapse comfort layer from a bullet-approaching surface to a bullet-repelling surface, wherein the surface layer and the internal layer are made of a rare earth modified two-dimensional polymer, and the transition layer and the main bearing layer contain a rare earth modified aromatic thermosetting copolyester resin. According to the damage layer and the material type, a differentiated repairing scheme is adopted, that is, the surface pit damage is repaired by using 150-180 DEG C hot air or 365 nm ultraviolet light irradiation, and the internal crack damage is repaired by using 280-320 DEG C hot air. The application does not need to disassemble the armor and send it to a maintenance base, and a single person can operate the application. The typical damage repairing only needs 10-15 minutes, and the battlefield repairing efficiency and the equipment continuous operation capability are remarkably improved.

The invention provides a molecular chain woven composite product formed by in-situ compounding of one-dimensional and two-dimensional polymers based on mechanochemistry and a preparation method of the molecular chain woven composite product. The preparation method comprises the following steps: firstly, pre-mixing p-toluenesulfonic acid and thermoplastic plastic containing polar groups, and then adding the mixture into a millstone-shaped solid-phase mechanochemical reactor for co-milling; then co-grinding the collected solid product and p-phenylenediamine, co-grinding the collected solid product and trialdehyde phloroglucinol, collecting to obtain composite powder, and preparing composite granules through a vacuum devolatilization extrusion granulation process; and finally preparing the molecular chain woven composite product from the composite granules based on a conventional injection molding process. According to the preparation method, an in-situ intercalation scheme adopted when a conventional two-dimensional inorganic material and a polymer matrix are blended is broken through, and a novel two-dimensional and one-dimensional compounding method is realized. According to the invention, one-dimensional and two-dimensional polymer molecular chain woven composite products are successfully expanded to public application terminals in a low-cost processing mode.

The present disclosure relates to a two-dimensional polymeric fullerene and preparation method thereof, wherein the preparation method includes the following steps: providing metal intercalated polymeric fullerene; replacing metal ions in the metal intercalated polymeric fullerene with quaternary ammonium salts. The preparation method of the two-dimensional polymeric fullerene of an embodiment of the present application has simple process and low cost, which can achieve large-scale preparation of two-dimensional polymeric fullerene.

The present invention relates to a method for the synthesis of a two-dimensional or quasi-two-dimensional polymer comprising a surfactant, the two-dimensional or quasi-two-dimensional polymer film and the use for the production of membranes, electronic devices or catalysts.

This invention provides a method for improving the fluorescence intensity of a two-dimensional polymer with excitation wavelength dependence, comprising the following steps: (1) adding the two-dimensional polymer with excitation wavelength dependence to an organic solvent and stirring to obtain a homogeneous and transparent solution, adding fluorescent molecules and a catalyst to the solution, and subjecting the two-dimensional polymer with excitation wavelength dependence to an esterification or amidation reaction with the fluorescent molecules; (2) after the reaction is completed, precipitation, dialysis, filtration and drying are performed to obtain the product. This invention introduces traditional fluorescent molecules into the two-dimensional polymer with excitation wavelength dependence to change the molecular aggregation state of the two-dimensional polymer, restricting intramolecular rotation or intramolecular vibration, thereby reducing non-radiative decay, resulting in a significant enhancement of the fluorescence of the two-dimensional polymer with excitation wavelength dependence, achieving the retention of excitation wavelength dependence within a relatively wide excitation wavelength range, enhancing the original blue and green colors, and being able to adjust to produce red fluorescence, with the intensity of red fluorescence also being correspondingly enhanced.

The invention discloses an anti-fingerprint hydrophobic and oleophobic coating based on a two-dimensional polymer and a preparation method of the anti-fingerprint hydrophobic and oleophobic coating, and relates to the field of coatings. Comprising the following steps: synthesizing a fluorine-containing amphiphilic monomer; synthesizing a two-dimensional amphiphilic polymer; grafting siloxane on the two-dimensional polymer: dissolving the two-dimensional polymer in trifluoroethanol, adding aminopropyl triethoxy siloxane and a condensing agent DCC, and removing the solvent after reaction to obtain an anti-fingerprint treatment agent; dissolving an anti-fingerprint treatment agent in ethyl perfluorobutyl ether to obtain a coating solution; and spraying the coating solution on a base material, and curing to obtain the anti-fingerprint hydrophobic and oleophobic coating. Through the molecular design of the two-dimensional amphiphilic polymer, the synergistic modification of the perfluorinated chain segment and siloxane and the low-cost solution process, the technical bottlenecks of the traditional anti-fingerprint coating in the aspects of wear resistance and light transmittance are successfully solved. The ultra-thin nano structure ensures the optical performance and endows the coating with industrial-grade durability at the same time.

The application discloses a kind of sp 2 A carbon conjugated two-dimensional polymer film and its preparation method and application.The preparation method comprises: the surface of substrate is treated with amino, and amino substrate is prepared;And the amino substrate is formed with organic monomer, catalyst, organic solvent mixed reaction system, then the mixed reaction system is heated to occur Schiff base reaction, hydroxy aldehyde polymerization, to obtain nanoscale sp 2 Carbon conjugated two-dimensional polymer film.The application first uses self-assembled monolayer assisted surface to initiate in-situ synthesis sp 2 Carbon conjugated two-dimensional polymer film, and the method is suitable for in-situ, rapid and large-area preparation of uniform nanoscale film on any substrate.The two-dimensional polymer film prepared has highly ordered structure, high specific surface area, high chemical stability and excellent in-plane conjugation, and can be widely used in harsh working environment, adsorption separation, energy conversion or optoelectronic devices and other fields.

The invention belongs to the field of organic synthesis, and particularly relates to a connector of a two-dimensional polymer, a monomolecular layer assembling method of the connector and a two-dimensional molecular preassembly. The linker is a molecule comprising a linker molecular core and at least one linking group; the linking group comprises at least one first type of functional group combined with the two-dimensional polymer, and the linker molecule at least comprises two first type of functional groups; the bonding at least comprises chemical bonding; the connectors and the two-dimensional polymers are combined in any number to form a layered polymer, and the thickness of the layered polymer is two times smaller than that of a single two-dimensional polymer. The connector disclosed by the invention can be universally suitable for assembling and combining almost all two-dimensional polymer molecules to construct a required two-dimensional assembly and / or a pre-assembly, and can be used for simultaneously assembling different types of two-dimensional polymer molecules to construct a novel composite two-dimensional molecular assembly to realize functionalization; and the method has wide universality, effectiveness and high efficiency.

This application discloses a two-dimensional polymer thin film based on reactive diffusion theory, its preparation method, and its applications. The film exhibits a typical bilayer structure: the lower layer is a continuous and dense covalent organic framework substrate film with good crystallinity; the upper layer is a cyclic / honeycomb Turing structure formed by the orderly assembly of nanoparticles, exhibiting strong periodicity and high uniformity. The preparation method employs gas-liquid interface reactive diffusion: the monomer is dissolved in a mixed solvent of DMF and chlorobenzene, and acetic acid is used as a catalyst, which is then dropped onto the surface of deionized water. By controlling the monomer concentration (5 mg / mL), molar ratio (2:3), drop volume (15 μL), and diffusion resistance, the Turing structure can be precisely controlled. This invention features a mild process, can be used for large-area preparation, and produces thin films with regular structures and excellent stability. It can be directly applied to flexible electronics, membrane separation, sensing, and catalysis, effectively solving the technical bottlenecks of uncontrollable morphology, low crystallinity, and difficulty in large-scale production of traditional two-dimensional polymer thin films.

The application discloses a kind of based on schiff base two-dimensional polymer composite membrane osmotic energy conversion device and its application.Schiff base two-dimensional polymer composite membrane is schiff base two-dimensional polymer / cellulose nanofiber composite membrane, which is prepared by interfacial superassembly strategy, has double nano ion channel and adjustable surface charge characteristics.The composite membrane is assembled between double conductivity cell, and the ion transport and osmotic energy conversion performance are tested under the concentration gradient of simulated seawater (0.5 M NaCl) and river water (0.01 M NaCl).It has a high output power density of 5.62 W / m 2 , and has good durability and cycle stability.The application provides a new intelligent nanochannel platform for efficient capture of blue osmotic energy.

The invention discloses a preparation method and application of a crystalline sp2 carbon conjugated two-dimensional polymer film. The thin film comprises a multi-element annular molecular structure formed by alternately polymerizing a first monomer and a second monomer, the first monomer is an amphiphilic methyl monomer with a functional side chain; the second monomer is a multi-aldehyde monomer. The preparation method comprises the following step: under the catalytic action of a catalyst, carrying out interfacial polymerization reaction on the first monomer and the second monomer at the interface of the first liquid phase and the second liquid phase. A methyl monomer is subjected to side chain modification to successfully realize an interfacial polymerization reaction to generate a single-layer or multi-layer crystalline film, side chain modification and amphipathy can stabilize an interfacial reaction system and reduce a reaction energy barrier, a condensation reaction of an interface can be effectively promoted, and various sp2 carbon conjugated two-dimensional polymer films are further synthesized; the preparation method provided by the invention has a large-scale prospect, and is green, simple, economical and environment-friendly to operate.

The invention provides a dynamic micro-interface polymerization method of a two-dimensional polymer material and application of the dynamic micro-interface polymerization method in preparation of a quasi-solid electrolyte, and the dynamic micro-interface polymerization method comprises the following steps: adding a first reaction monomer into a solvent, and stirring to obtain a first monomer solution; adding a second reaction monomer into the solvent, and stirring to obtain a second monomer solution; adding the second monomer solution into the reaction container, injecting the first monomer solution into the second monomer solution under a stirring condition, and reacting to obtain a mixed system; and carrying out suction filtration, purification and drying on the mixed system to obtain the two-dimensional polymer material. According to the dynamic micro-interface polymerization method disclosed by the invention, a dynamic micro-interface reaction system with a huge specific surface area is constructed through external mechanical stirring, and a reaction place is expanded from a limited two-dimensional plane to a massive micron-scale interface in a three-dimensional space, so that the core defect of insufficient interface area in static interface polymerization is fundamentally overcome.

The present invention discloses a two-dimensional amphiphilic polymer coating, a coating, and a preparation method. The polymer coating is obtained by modifying a two-dimensional polycarboxylate / polycarboxylic acid by grafting alkyl chains. The amphiphilic polymer coating of the present invention increases the distribution density of hydrophilic groups in the two-dimensional plane through the large specific surface area of ​​the two-dimensional polymer, achieves an optimal balance between hydrophilicity and hydrophobicity, significantly improves adhesion to the plastic surface, and imparts durable anti-fog properties to the coating, while also exhibiting excellent wear and scratch resistance. The preparation methods of the coating and coating are simple, low-cost, and suitable for industrial-scale applications.

The application discloses a large-area two-dimensional polymer (2DP) nanosheet matrix proton exchange membrane (PEM), which is prepared by using ionic 2DP nanosheets as a main membrane material, adding ionic polyelectrolyte as an intercalation agent, and then mixing and preparing the large-area PEM by a flow casting method. The 2DP nanosheet solution is synthesized by using a step-by-step single-phase polymerization method, and then the polyelectrolyte is dissolved in a suitable solvent, mixed with the 2DP nanosheet solution according to a certain proportion, and a 2DP-polyelectrolyte composite membrane is prepared by a flow casting method. The preparation method is simple, controllable and convenient to operate. The prepared large-area 2DP-polyelectrolyte composite PEM has large size (400cm 2 ), excellent stability and extremely high proton conduction capacity.

The invention discloses a saddle-shaped topological monomer-based two-dimensional polymer as well as a preparation method and application thereof, and particularly relates to the field of supramolecular materials. A saddle-shaped monomer A and a linear monomer B are cooperatively driven by cation-pi and pi-pi effects to be subjected to graded assembly to obtain the one-dimensional rigid supramolecular chain, and the one-dimensional rigid supramolecular chain specifically comprises a plurality of one-dimensional rigid supramolecular chain structure units which form an ordered two-dimensional array structure; each one-dimensional rigid supramolecular chain structure unit comprises a plurality of saddle-shaped monomers A, a linear monomer B with cations at the two ends is connected between every two adjacent saddle-shaped monomers A, the saddle-shaped monomers A and the linear monomers B are connected through the cation-pi effect, and in every two adjacent one-dimensional rigid supramolecular chain structure units, the linear monomers A and the linear monomers B are connected through the cation-pi effect. And the two saddle-shaped single bodies A are connected through a pi-pi effect. According to the two-dimensional polymer, efficient separation and carrier migration of charges in the polymer can be effectively promoted, and more active centers capable of participating in reaction are provided.

The invention relates to the technical field of nano materials and immunity, and provides an artificial antigen presenting cell based on a polymer nanosheet as well as a preparation method and application of the artificial antigen presenting cell. According to the preparation method of the artificial antigen presenting cell, uniform distribution of an N3 group on a two-dimensional polymer nanosheet is realized through a crystallization-driven self-assembly process, then an antibody is subjected to DBCO group modification, and finally the two-dimensional polymer nanosheet is modified with the antibody through a click chemical reaction to form the artificial antigen presenting cell. The interaction with the T cells is realized, and the T cells are activated and amplified. According to the invention, the two-dimensional polymer nanosheet is used as an artificial antigen presenting cell for activating the T cell, and the nanosheet structure effectively increases the contact area between the antibody and the T cell, so that a strong specific immunoreaction can be generated, and an anti-tumor effect is achieved; and the material has the advantages of controllable size, uniform morphology, stable structure, high biocompatibility, biodegradability and the like.

The invention belongs to the field of organic synthesis, and particularly relates to a two-dimensional polymer assembly capable of being assembled in a cross-layer mode, an assembling method of the two-dimensional polymer assembly and a two-dimensional polymer film. The two-dimensional polymer assembly is a monomolecular layer assembly comprising at least one complementary reactive functional group pair; the two-dimensional polymer assembly capable of cross-layer assembly is subjected to cross-layer assembly in the thickness direction through complementary reactive functional groups exposed on the upper surface and the lower surface; the cross-layer assembly mode comprises physical bonding and / or chemical bonding, and at least comprises one chemical bonding. The interlayer bonding stability of the multi-layer two-dimensional material and the stability of the whole material are essentially changed by changing the cross-layer assembly form / bonding form, high-degree-of-freedom structural design and / or functional design can be performed on the multi-layer two-dimensional material, and the method has wide universality, effectiveness and high efficiency; the application field of the existing layered two-dimensional material can be greatly expanded; and the use effect is improved.

The application discloses a kind of microporous metal organic framework materials and preparation and rare gas separation method, belong to chemical adsorption separation technical field, microporous metal organic framework material is made of divalent metal ion, heterocyclic dicarboxylic acid ligand and nitrogen-containing heterocyclic ligand coordination construction;Divalent metal ion and heterocyclic dicarboxylic acid ligand coordination forms two-dimensional polymer, nitrogen-containing heterocyclic ligand as pillar, by with two-dimensional polymer coordination forms three-dimensional framework structure.Microporous metal organic framework material is used as adsorbent, and is contacted with rare gas mixed gas phase, realizes to high polarity rare gas identification capture, reaches the separation and purification of rare gas.The present application realizes the accurate control of pore chemistry electrostatic environment by changing different ligand and its functional group substituent, so as to realize the selective separation of xenon / krypton and helium / neon and other rare gas.

The invention discloses a two-dimensional polymer building block. The two-dimensional polymer building block adopts a modular structural design of'molecular core-connecting arm-reactive group ', the molecular core is selected from a unit with a two-dimensional topological structure, and the edge or surface of the molecular core is modified with a first type of reactive group and a second type of reactive group. According to the building block, by utilizing specific pairing (such as nucleophilic-electrophilic reaction, click chemistry or light / heat initiation reaction) among reactive groups, a monomolecular layer assembly with uniform thickness and a covalent cross-linked polymer building block film with high stability can be constructed on a gas-liquid interface, a liquid-liquid interface or a substrate surface through physical pre-assembly and chemical bonding. According to the preparation method, polymerization and assembly processes are decoupled, so that the problems that a traditional two-dimensional polymer is difficult to process, has many defects and is weak in interlayer binding force are effectively solved, and controllable preparation of the large-area and high-quality two-dimensional functional film is realized.

The application belongs to the technical field of high polymer materials, and particularly relates to a preparation method and application of a two-dimensional polymer fullerene membrane stable to water and organic solvents. The preparation method comprises the following steps: uniformly mixing N-methyl pyrrolidone (NMP) solvent and a two-dimensional polymer fullerene dispersion solution to obtain a C60 diluent; placing a substrate filter membrane containing a supporting membrane at the bottom of a filter head of a suction filter bottle, wetting the substrate filter membrane with an appropriate amount of NMP solvent, starting a suction filter pump, closing the pump after 1-3 minutes of suction filtration, and then fixing the filter cup at the upper end of the filter head; and starting the suction filter pump again and pouring the C60 diluent into the filter cup. The two-dimensional polymer fullerene dispersion solution is mixed with NMP and subjected to suction filtration, and a two-dimensional polymer fullerene membrane is prepared through annealing treatment. The two-dimensional polymer fullerene membrane allows water molecules to pass through while retaining ions, enhances interlayer bonding, improves the anti-swelling property and stability of the membrane, and realizes efficient liquid phase separation.

The invention provides COF-modified spherical powder and piezoelectric / photoelectric synergistic electric output closed-cell foam prepared by using a mechanochemical / plasma spheroidizing technology, which is characterized in that general-purpose plastic polystyrene is used as a one-dimensional linear polymer matrix, and polyimide-based COF is used as a PS matrix for in-situ synthesis of a COF material; the method comprises the following steps: firstly, realizing in-situ pre-synthesis of polyimide-based COF in a PS matrix by utilizing a strong and continuous external force field of a solid-phase shearing and grinding technology; and subsequently, complete cyclization of the polyimide-based COF is realized by utilizing plasma, and the polyimide-based COF is converted into COF-modified spherical powder. Further, the higher stacking density and better fluidity of the spherical powder are utilized for powder compression molding, and the piezoelectric / photoelectric synergistic electric output closed-cell foam is prepared based on the supercritical CO2 foaming technology. According to the invention, the intrinsic functionality of a one-dimensional polymer material is realized and is combined with a two-dimensional polymer material, so that the full-scale functional combination of the regular spherical polymer functional composite powder is realized.

The invention belongs to the technical field of preparation of molecular identification adsorption separation functional materials, and discloses a preparation method and application of a two-dimensional polymer nanosheet adsorbent controllably constructed by micelle assembly. According to the invention, a micelle assembly strategy and an ice template method are introduced to construct the two-dimensional polymer nanosheet adsorbent so as to specifically separate adenosine monophosphate AMP in nucleoside compounds. Tetravinyl phenylboronic acid (4-VPBA) and tetraethyl orthosilicate (TEOS) are used as monomers, sodium dodecyl sulfate (SDS) is used as a micelle to provide a confinement space to wrap the monomers for micelle assembly, and the two-dimensional polymer nanosheet 2DPS-BA with specific adenosine monophosphate separation capacity is successfully synthesized through an ice template method. Different silane coupling agents are used for replacing tetravinyl phenylboronic acid to serve as monomers, the two-dimensional polymer nanosheet is successfully prepared, the applicability of the work is proved, and the method has potential application value in the field of identification and separation.

Systems and methods for producing and using polymer based fixed targets for hydrated, room temperature, high-throughput serial protein crystallography with minimal background and minimal sample consumption are provided. The fixed targets can also be used with non-protein samples such as nanoparticle inorganic crystals. The targets maintain full crystal hydration that allows for on-chip crystallization as well as maintaining long term stability of the sample within the chip. The target chips are optimized to minimize background by controlling the sample thickness in the beam to match crystal size, enabling fast raster scanning at lower fidelity and high hit rates that facilitate dynamic measurements. The targets provide an inexpensive, flexible substrate for on-chip, micro-batch or vapor diffusion crystallization facilitated by polymer brushes for sample concentration and surface initiated crystallization thereby eliminating damaging crystal sample transfer.

The present invention relates to the field of membrane separation technology, and in particular to a two-dimensional polymer composite membrane, its preparation method, and application. The preparation method comprises the following steps: adding trialdehyde phloroglucinol to an organic solvent to form an organic phase, adding a cyano group-containing diamine monomer to an acidic aqueous solution to form an aqueous phase, separating the organic phase from the aqueous phase using a support membrane, and allowing the trialdehyde phloroglucinol in the organic phase and the cyano group-containing diamine monomer to undergo a Schiff base reaction on the surface of the support membrane to form a two-dimensional polymer layer. The two-dimensional polymer composite membrane prepared by the present invention has high separation performance in the monovalent / monovalent metal ion separation process.