37 results about "Charge-transfer complex" patented technology

The invention discloses a preparation method of a grafted polymer brush copolymer, which comprises the following steps: S1, mixing a styrene monomer, N-4-vinyl phenyl-N, N-dimethylamine, toluene and AIBN, heating, and reacting to generate a first section of polymer; and S2, mixing the first-section polymer with an acrylate monomer and an imide compound, and continuously reacting under an illumination condition to obtain the polymer brush copolymer. AIBN can be decomposed at high temperature to generate free radicals, polystyrene monomers are initiated to polymerize, and a first-section polymer is formed. The imide compound and a nitrogen-containing initiation site form a charge transfer complex under an illumination condition. The charge transfer complex can be dissociated to generate free radicals formed by nitrogen-containing initiation sites, and then the free radicals formed by the nitrogen-containing initiation sites initiate polymerization of acrylate monomers to obtain a grafted polymer brush copolymer. The preparation method is simple in reaction condition, simple and convenient to operate and suitable for industrial large-scale production.

A solid polymer electrolyte includes a charge transfer complex polymer matrix with a polar ring polymer matrix and an ethylene carbonate-based small molecule additive. In some variations, the ethylene carbonate-based small molecule additive is selected from one or more of ethylene carbonate (O═C1OCCO1) and 4-(fluoromethyl)-5-methyl-1,3-dioxolan-2-one (O═C1OC(C)C(CF)O1).

The invention discloses a low-dielectric polyimide film based on a fluorine-containing triphenylmethane unit as well as a preparation method and application of the low-dielectric polyimide film, and the low-dielectric polyimide film is a novel polyimide material FPOPF-6FDA obtained by polymerizing a fluorine-containing triaryl methane diamine monomer and 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride. The fluorine-containing triarylmethane diamine monomer is preferably 4, 5-diphenyl-1, 3, 5-triazine. According to the invention, 4, 4 '-((4-fluoro-3-phenoxy phenyl) methylene)) bis (2-fluoroaniline) is used, specifically, 4, 4'-diaminotriphenylmethane is used as a functional core, a fluorine-containing group and a large-volume side chain group are introduced, and non-coplanar twisted conformation destroys close packing of molecular chains and increases the chain spacing, so that the effect of a charge transfer complex (CTC) is weakened, and the photoelectric conversion efficiency is improved. And the heat resistance and optical transparency of polyimide are maintained while the dielectric constant of the material is reduced.

The invention provides a polypeptide and application thereof in photocatalytic nitrogen fixation, and belongs to the technical field of photocatalysts. The sequence of the polypeptide is N3y (NBD-yyy) or N3Y (NBD-YYY), NBD is 4-amino-7-nitrobenzofurazan, y is D-configuration tyrosine, Y is L-configuration tyrosine, and the amino group in the NBD is derived from HCl-removed carbon nitrogen coupling of NBD-Cl (4-chloro-7-nitrobenzofurazan) and free amino group on y or Y. The polypeptide provided by the invention can be prepared into an aqueous solution for assembling and adsorbing nitrogen, and forms a charge transfer compound with nitrogen. Under the condition of normal-temperature and normal-pressure natural illumination reaction for 6 hours, the ammonia gas generation efficiency of the photocatalyst is 61.8 mg <-1 > gcat <-1 > h <-1 >, the catalytic electron turnover number is 43.9, and the efficiency of the photocatalyst can be compared favorably with that of the current excellent non-metal inorganic material, metal or metal-organic photocatalyst.

The application belongs to the field of photodynamic therapy, and specifically discloses a vitamin K co-crystal material for photodynamic therapy and a preparation method thereof. The vitamin K co-crystal material takes vitamin K as an electron acceptor, and the two carbonyl groups at the para positions of the vitamin K quinoid six-membered ring make the vitamin K exhibit electron deficiency, form an organic charge transfer complex with the electron acceptor, and self-assemble to form a co-crystal, so that the absorption spectrum of the system is widened, a wider wave band of light is more effectively utilized, the photodynamic therapy response wavelength of the vitamin K is adjusted from the ultraviolet region to the visible region and the near infrared region, the problem of low penetration depth and light damage caused by photodynamic therapy using light in the ultraviolet region is avoided, and the vitamin K has excellent photodynamic performance and good application prospects in surface sterilization and disinfection, treatment of body surface infection, and directional cancer treatment based on visible light or near infrared light.

The application provides an electrolyte and a preparation method and application thereof, and relates to the technical field of secondary batteries. Specifically, the electrolyte of the application comprises an electron acceptor polymer and an electron donor polymer with specific molecular structures. The electrolyte of the application has a phase transition temperature in a wide temperature range, and charge transfer can occur between the electron donor and the electron acceptor to form a charge transfer complex. The charge transfer has high reversibility and can be regulated by temperature, so that the electrolyte exhibits temperature sensitivity. When a secondary battery is prepared by using the electrolyte of the application, the secondary battery will have good ionic conductivity of the electrolyte, low-temperature conductivity, high-temperature safety and cost-effectiveness, and has a good application prospect.

The invention relates to a high-voltage-resistant anti-breakdown automobile wire sheath and a preparation method thereof, and relates to the technical field of automobile wire harnesses, and the high-voltage-resistant anti-breakdown automobile wire sheath comprises a modified styrene-ethylene-butylene-styrene block copolymer, polypropylene, functionalized magnesium hydroxide, melamine polyphosphate, white oil and a functional auxiliary agent. An N-vinylcarbazole group grafted on a styrene-ethylene-butylene-styrene block copolymer molecular chain is used as an electron donor, an anthraquinone derivative chemically bonded on the surface of a magnesium hydroxide particle is used as an electron acceptor, and the N-vinylcarbazole group and the anthraquinone derivative form a large number of charge transfer complexes at an interface through pi-pi interaction. According to the charge transfer complexes, a high-density deep energy level trap is introduced into an energy band structure of the material, so that the charge behavior of the material in a high electric field is changed, and high-performance high-voltage-resistant and anti-breakdown effects are realized.

The present invention discloses a polyimide polymer and a preparation method and application thereof. The polyimide polymer has a structure shown in formula (I): #imgabs0# wherein n is in the range of 50 to 500; R1 is selected from H, C 1～3 Alkyl; R 2 Selected from #imgabs1#‑OR 3 The group is monosubstituted or polysubstituted, and the R 3 At least one selected from #imgabs2#. A bulky siloxane side group is introduced into the structural formula of the polyimide polymer of the present invention. Due to the presence of a triphenylmethane structure in the PI main chain, it has excellent heat resistance and mechanical properties. On the other hand, thanks to the introduction of the siloxane side group, the packing density of the molecular chain and the formation of charge transfer complexes (CTCs) can be significantly reduced, so that the dielectric properties, transmittance and solubility of the PI film prepared therefrom are improved.

The invention discloses a charge transfer compound-based photoinitiator. The charge transfer compound-based photoinitiator is formed by an electron donor and an electron withdrawing body through charge transfer. Wherein the molecular number ratio of the electron donor (electron donor) to the electron acceptor (electron acceptor) is (1-5): 1. The invention also discloses an adhesive composition containing the charge transfer compound-based photoinitiator and a preparation method of the charge transfer compound-based photoinitiator. The adhesive composition prepared by adopting the charge transfer compound-based photoinitiator has a window period for delaying curing, and can be used for bonding low ultraviolet light transmission base materials.

The present application discloses a two-dimensional paramagnetic conductive metal-organic framework material enhanced by anionic free radicals, its preparation method and application, and relates to the technical field of paramagnetic conductive materials. The preparation method comprises: dissolving nickel nitrate hexahydrate in a dispersion 1 of degassed dimethyl sulfoxide containing ammonia water and mixing hexaminobenzene hydrochloride in a dispersion 2 of degassed dimethyl sulfoxide and heating the mixture to obtain a two-dimensional metal-organic framework with semiconductor characteristics, and dispersing the mixture in an N, N-dimethylformamide solution containing tetrachlorobenzoquinone for reaction to obtain a two-dimensional paramagnetic conductive metal-organic framework material enhanced by anionic free radicals. In the present application, it was observed that the distance between Ni1-Ni4 in each pore of Ni3(HIB)2 was 1.35nm, and the distance between Cl1-Cl3 where tetrachlorobenzoquinone was in the para position was 0.61nm, which indicates that the pores of Ni3(HIB)2 can better accommodate tetrachlorobenzoquinone guests to form Ni3(HIB)2-CHL charge transfer complexes. By accommodating tetrachlorobenzoquinone in the pores of Ni3(HIB)2, conductivity and paramagnetism can be adjusted.

In the present invention, a composition contains: a charge transfer complex formed from an electron-donating compound and an electron-receiving compound; and a non-aqueous solvent. The electron-donating compound has a phenylene oxide structure. The relative dielectric constant of the non-aqueous solvent is more than 2.0 and less than 40.

The application belongs to the technical field of solid-state charge transfer complex, and provides a solid-state charge transfer complex, a preparation method and application thereof, the solid-state charge transfer complex is EtLP6 alpha-TFTN, ethyl skew[6]arene EtLP6 is used as an electron donor, and electron-deficient aromatic four-fluorine p-phenylenedicyanide is used as an electron acceptor. The solid-state charge transfer (CT) complex formed by ethyl skew[6]arene (EtLP6) and electron-deficient aromatic acceptor (four-fluorine p-phenylenedicyanide-TFTN) is constructed in the embodiment of the application, the switch-type gas-induced chromic property of the solid-state charge transfer (CT) complex on 1,3-dioxane and 1,4-dioxane isomer vapor can be used to realize rapid, visualized distinction and detection on 1,3-dioxane and 1,4-dioxane isomer; the solid-state charge transfer complex can be obtained by simple mechanical grinding, and no complex solvent crystallization process is involved.

Polyamic acid and a modifier react and then are mixed with N-methyl pyrrolidone to prepare coating liquid, a glass plate is coated with the coating liquid, high-temperature heat preservation is conducted, the anti-aging organic silicon modified polyimide film is prepared, a benzimidazole structure is grafted to the side chain of a polyimide molecule, and the anti-aging organic silicon modified polyimide film is obtained. Nitrogen atoms in benzimidazole have lone pair electrons and can be used as a free radical trapping agent to interrupt an autocatalytic oxidation chain reaction of polyimide in a high-temperature aerobic environment, meanwhile, a side chain contains a fluoropolysiloxane chain segment, and the strong electronegativity and hydrophobicity of fluorine atoms can inhibit formation of a charge transfer complex, so that aging of polyimide is reduced, and the polyimide film is prepared. The larger atomic radius can increase the molecular chain spacing and reduce the molecular chain stacking density, and is matched with the polysiloxane chain segment, so that aging media such as water vapor and oxygen are more difficult to permeate and diffuse, and the anti-aging effect of the polyimide film is further improved.

The invention discloses a composite positive electrode of an aqueous zinc organic iodine battery, a preparation method of the composite positive electrode and the aqueous zinc organic iodine battery, and belongs to the technical field of aqueous zinc ion batteries. The aqueous zinc organic iodine battery composite positive electrode comprises a current collector and an organic iodine dry electrode, and the organic iodine dry electrode is prepared from a phenazine-iodine charge transfer compound, a conductive agent and a binder under a solvent-free condition through a dry rolling technology. The phenazine-iodine charge transfer compound is used as the aqueous zinc organic iodine positive electrode active material, and due to high electronic conductivity and low solubility, the aqueous zinc organic iodine positive electrode active material shows excellent rate capability and cycling stability, also has high discharge voltage and low overpotential, still has good electrochemical performance under high load, and has important application prospects.

The present invention relates to an electrolyte composition comprising a lithium salt, and a charge transfer complex formed from a precursor of said charge transfer complex, electron acceptor, and a precursor of said charge transfer complex, electron donor, said lithium salt being (fluorosulfonyl)(trifluoromethanesulfonyl) lithium imidide LiFTFSI, said precursor of said charge transfer complex, electron acceptor, being benzoquinone or one of its derivatives, and said precursor of said charge transfer complex, electron donor, being hydroquinone or one of its derivatives.It also relates to a process for preparing said electrolyte composition, the use of said electrolyte composition in a rechargeable lithium-metal battery or for the preparation of a solid electrolyte for a rechargeable lithium-metal battery, a solid electrolyte for a rechargeable lithium-metal battery comprising said electrolyte composition, and a rechargeable lithium-metal battery comprising said solid electrolyte. Figure to be published: Figure 1.

The invention belongs to the field of organic functional materials, and in particular relates to a 1, 2, 7, 8-dihydrazino-cardamom compound as well as preparation and application thereof, and the 1, 2, 7, 8-dihydrazino-cardamom compound is a free compound with a structural formula (1) and a cationic derivative of the free compound. According to the brand new compound disclosed by the invention, based on the structure and control of groups, especially R1 substituent groups, the performance of the compound can be synergistically improved, for example, the compound disclosed by the invention has multiple reversible oxidation-reduction properties, adjustable optical properties, special magnetic properties and the like. In addition, a charge transfer compound formed by the compound is expected to be applied to organic semiconductor materials, organic spinning electronic devices and the like.

The invention relates to the technical field of polishing equipment, and provides a polyimide film preparation method, which comprises the following steps: by taking CBDA / BDA as dianhydride and ODA / DABA as diamine, reacting for 6-24 hours in a DMF (Dimethyl Formamide) solvent under the protection of nitrogen at 0-30 DEG C to synthesize a PAA solution; and carrying out gradient imidization after tape casting to prepare an initial PI film. According to the present invention, the alicyclic dianhydride (CBDA / BDA) is selected to replace the traditional aromatic dianhydride, such that the conjugated structure of the molecular chain is effectively cut off, and the formation of the charge transfer complex (CTC) causing the yellowing of the polyimide and the reduction of the light transmittance is fundamentally inhibited so as to achieve the high light transmittance (gt; 85%) and low chromaticity. Meanwhile, an optimized gradient imidization process (heat preservation at 80-350 DEG C in stages) is adopted, so that high-efficiency and complete conversion from polyamide acid (PAA) to polyimide (PI) is ensured, and the thermal stability (T5% gt; 500 DEG C).

The application is suitable for the technical field of volatile organic compounds treatment, and provides a light response type charge transfer complex as well as a preparation method and application thereof. The light response type charge transfer complex (EtP5-F4TCNQα) can efficiently adsorb toluene (Tol), and after adsorption, the toluene molecules can be triggered to be released rapidly by near-infrared laser irradiation, which avoids the dependence on heat source, pressure or chemical elution reagent in the traditional desorption, avoids the harsh conditions of high temperature and high pressure, significantly reduces the energy consumption and operation cost, and can effectively maintain the structural stability and recycling performance of the adsorption material. The whole desorption process does not need to introduce external chemicals, fundamentally eliminates secondary pollution, and realizes green and low-carbon operation. The application provides a green, efficient and simple-to-operate desorption regeneration new strategy, and has important engineering application value and environmental protection significance in the adsorption regeneration process in the fields of chemical separation, environmental governance and energy materials.

The invention discloses a high-insulation COC capacitor film and a preparation method and application thereof, and belongs to the technical field of energy storage dielectric materials and preparation thereof. The problems that under the existing high-temperature or high-electric-field condition, due to the fact that an interface Schottky barrier is reduced, carrier injection is aggravated, the conductivity loss of a COC dielectric thin film capacitor is sharply increased, the insulating performance is degraded, and the energy storage efficiency is reduced are solved. The method comprises the following steps: firstly, inducing an initiator to generate activated sites on the surface of a COC capacitance film by utilizing an ultraviolet light effect, and then carrying out grafting reaction between strong electron-deficient small organic molecules and electron-donating small organic molecules and the activated sites on the surface of the COC through ultraviolet induction; and a charge transfer complex is further formed on the surface of the COC film by utilizing the association effect of the two, so that the high-insulation COC capacitor film with the surface grafted with the charge transfer complex is obtained. The high-insulation COC capacitor film has excellent high-temperature energy storage performance and can be used for an energy storage device under the condition of electrothermal field coupling.

The invention discloses a method for synthesizing and preparing cyclic carbonate, and belongs to the technical field of organic synthesis. The method comprises the following step: regulating and controlling the conversion rate and selectivity of the polymer through an iodo-based charge transfer compound consisting of I2 and quaternary ammonium salt. The method is simple and convenient in process, low in cost, high in reaction activity, efficient in reaction rate and controllable in process, and the prepared polyester has the advantage of being free of metal residues.

To provide an electrolyte that exhibits high ionic conductivity at room temperature, and further exhibits high ionic conductivity even under weak confinement pressure. [Solution] The electrolyte contains a charge transfer complex formed from an electron-donating compound and an electron-accepting compound, an alkali metal-containing compound, and an organic molecule different from the charge transfer complex and the alkali metal-containing compound. The electron-donating compound has a phenylene skeleton. The organic molecule is a molecule that can dissolve the alkali metal-containing compound when 100 g of the organic molecule is mixed with 0.1 moles of the alkali metal-containing compound at 25°C.

The application relates to the technical field of organic photocatalysis, and specifically puts forward a sulfur-containing photoinitiator composition and a free radical polymerization system. The sulfur-containing photoinitiator composition specifically comprises an organic photocatalyst and a sulfur-containing initiator. When used for photoinitiated free radical polymerization, the organic photocatalyst and the sulfur-containing initiator respectively act as an acceptor and a donor, a photoinduced reaction occurs under light to form a charge transfer complex, and the charge transfer complex is dissociated into free radicals to initiate free radical polymerization. The application utilizes a novel sulfur-containing photoinitiator composition, and successfully applies the sulfur-containing photoinitiator composition to the polymerization field. Since the sulfur-containing photoinitiator composition exhibits excellent insensitivity to water and oxygen, the sulfur-containing photoinitiator composition can be rapidly initiated under light in an air environment without a metal catalyst and a complicated oxygen removal operation, so that the sulfur-containing photoinitiator composition can provide a brand-new green synthesis path for the development of high-performance functional polymers, and the technical problems of existing polymerization technologies, such as environmental sensitivity, complicated steps or dependence on metal catalysts, are solved.

The invention relates to the technical field of pharmaceutical preparations, and discloses an application of angelica keiskei chalcone in preparation of an intervention drug for metabolism-related fatty liver diseases, and the intervention drug comprises the following raw materials: an angelica keiskei chalcone extract, a methacrylic acid-methyl methacrylate copolymer, L-arginine, nicotinamide and L-tartaric acid. The preparation process adopts a fluid phase change coprecipitation method. In the liquid preparation stage, L-arginine is utilized to realize preliminary solubilization of chalcone. Nicotinamide and chalcone construct a charge transfer complex to inhibit chemical degradation of active components in an alkaline environment. In the coprecipitation stage, L-tartaric acid constructs a spatial multidentate cross-linked network in a polymer matrix, locks the amorphous state of drug molecules, and cuts off a recrystallization channel. In the post-treatment stage, pre-cooled acid washing liquid is adopted for replacing and washing waste salt, and powder is prevented from absorbing moisture and deliquescing. The in-vitro dissolution rate, the chemical stability and the physical stability of long-term storage of the chalcone are effectively improved.

The present invention discloses a multi-color optoelectronic response synaptic device and a preparation method thereof. The multi-color optoelectronic response synaptic device is a multi-layer structure. Along the light incident direction, the multi-layer structure successively includes a transparent conductive electrode layer, a hole transport material layer, a lead-free perovskite layer, an electron transport material layer, an organic semiconductor charge transfer complex layer, and a metal electrode layer. Preparation method: Prepare the transparent conductive electrode layer; successively prepare the hole transport material layer, the lead-free perovskite layer, the electron transport material layer, and the organic semiconductor charge transfer complex layer on the transparent conductive electrode layer by spin coating; vacuum deposit and prepare the metal electrode layer on the organic semiconductor charge transfer complex layer. The multi-color optoelectronic response synaptic device of the present invention has a reasonable structure design, can realize the simulation of multi-color optoelectronic synaptic functions in the ultraviolet-visible-near infrared range, and can realize the function of color recognition for red, green, and blue light in the visible light band, and has good application prospects.

The application belongs to the field of strain sensors, and particularly relates to a flexible multifunctional sensing film structure and a preparation method thereof. The application takes two-dimensional material graphene as a core, designs and prepares an ultrathin flexible extensible structure and a sensing unit for sensing strain, near-infrared light and temperature, and integrates and designs different parameter sensing function units. A first layer is a rigid base layer with a polished surface; a second layer is a sacrifice layer; a third layer is a flexible base layer; a fourth layer is a rigid base material layer; a fifth layer is a two-dimensional material; a sixth layer is an electrode; and a seventh layer is a surface functionalization modification layer of a near-infrared light sensing unit. The application enhances the near-infrared light response sensitivity of graphene by surface functionalization modification of charge transfer complexes of graphene, and the overall design has flexibility, high sensitivity, independent sensing of multiple parameters and good environmental adaptability.

The invention discloses a photo-thermal conversion eutectic material based on a biphenyl derivative and a preparation method thereof, the eutectic material comprises an electron donor and an electron acceptor, the electron donor is a biphenyl derivative containing pyridine nitrogen, the pyridine nitrogen is delocalized from the electron donor to the electron acceptor as an electron source, and the photo-thermal conversion eutectic material is formed. A biphenyl derivative containing pyridine nitrogen is used as an electron donor, when the electron donor is combined with an electron acceptor, electrons of N atoms are delocalized to the electron acceptor from the electron donor to form a charge transfer compound, and the charge transfer compound is self-assembled to form the photo-thermal conversion eutectic material. The eutectic material has excellent photo-thermal conversion performance, the absorption band can reach 200-2000 nm, and light of a wide wave band can be effectively utilized; the high photo-thermal conversion efficiency is achieved, and the photo-thermal conversion efficiency can reach 91.2 + / -6.6% in the near-infrared region of 808 nm; meanwhile, good thermal stability is achieved, and the thermal stability ranges from normal temperature to 155 DEG C.

The invention provides an electrolyte as well as a preparation method and application thereof, and relates to the technical field of secondary batteries. Specifically, the electrolyte of the present invention includes an electron acceptor polymer and an electron donor polymer having a specific molecular structure. The electrolyte disclosed by the invention has a wide-temperature-range phase change temperature, a charge transfer effect can be generated between the electron donor and the electron acceptor to form a charge transfer complex, and the charge transfer effect has high reversibility and can be regulated and controlled through temperature, so that the electrolyte shows a temperature sensitive characteristic. When the electrolyte is used for preparing a secondary battery, good electrolyte ionic conductivity, low-temperature conductivity, high-temperature safety and cost effectiveness are shown, and the electrolyte has a good application prospect.

The invention discloses a diamine containing an intramolecular imide ring and a fatty alkyl group, a polyimide formed based on the diamine, and a preparation method and application thereof; the diamine monomer is prepared by introducing a fatty alkyl group and an imide ring structure through a condensation reaction between nitroanhydride and a diamine containing a fatty alkyl group, and then reducing the diamine monomer; when the monomer is polymerized into polyimide, the alkalinity of the amino group of the diamine monomer can be effectively weakened, and the phenomenon that precipitation is formed due to salt formation during the polymerization process, which makes the polymerization difficult, is avoided, thereby improving the degree of polymerization reaction, and helping to improve the molecular weight and mechanical properties of the polyimide; at the same time, the introduction of the fatty alkyl group can inhibit the formation of a complex of charge transfer between a diamine electron donor and a dianhydride electron acceptor, and improve the optical transparency of the polyimide film; after testing, the mechanical properties of the polyimide film of the present application are significantly better than those of a traditional polyimide film, and the film has high optical transparency, and has good prospects in the fields of electronic products such as flexible electronic display devices and flexible circuit board matrix materials.

The application discloses a preparation method of SMA copolymer with high maleic anhydride content and belongs to the technical field of polymer synthesis. The preparation method comprises the following steps: taking 4,4'-azobis(4-cyanopentanoic acid) as raw material, and synthesizing a functional initiator through two-step reactions of acyl chlorination and amidation; and then copolymerizing styrene, maleic anhydride, the functional initiator and tri(pentafluorophenyl)borane to obtain a copolymer with a mass fraction of maleic anhydride of 35%-45%. The application aims at the technical limitation that the maleic anhydride content is generally difficult to exceed 30% due to the charge transfer complex mechanism in the prior art, and proposes that the functional initiator and tri(pentafluorophenyl)borane form a synergistic system through reversible N-B coordination, and the selective activation and local enrichment effect are utilized to realize efficient insertion of maleic anhydride, thereby providing a new path for preparing SMA copolymer with high maleic anhydride content.