51 results about "Naphthalenetetracarboxylic dianhydride" patented technology

The invention relates to a preparation method of a self-assembly Ni-MOFs electrochromic QR code device. The method comprises the steps as follows: 1,4,5,8-naphthalenetetracarboxylic dianhydride and 5-amino-2-hydroxybenzoic acid are put in toluene, and an anhydride ligand is obtained; the ligand is dissolved in DMF and a solution A is obtained; nickel salt is dissolved in ethanol and a solution B is obtained; pretreated FTO glass is irradiated by ultraviolet ozone, the obtained FTO glass is sequentially placed in the solution A, ethanol, the solution B and ethanol for self-assembly, circulatingoperation is performed, and an FTO electrode with a Ni-MOFs film attached on the surface is obtained; a working electrode displaying QR code patterns is formed through laser etching, another FTO glass is used as a counter electrode, gel electrolyte is injected, and the device is obtained after packaging. Controllable preparation of the Ni-MOFs film is realized, the prepared QR code device can beswitched between display and hiding when positive and negative voltage is applied, and meanwhile, the device has good electrochromic performance and has wide application prospects in the fields of Internet of Things, intelligent wearable devices and the like.

The invention discloses an organic electrode material, which comprises an estolide part and a diamine part with electrochemical activity, wherein the estolide is one or several of pyromellitic dianhydride, naphthalenetetracarboxylic dianhydride or perylenetetracarboxylic dianhydride; the diamine is one or two of 2,6-diamino-anthraquinone, 1,4-diamino-2,3-dicyano anthraquinone; n(estolide):n(diamine) is 1 to (0.8 to 1.2). The invention also provides a preparation method of the organic electrode material. The invention also discloses a sodium ion battery with the organic electrode material. The organic electrode material provided by the invention has the advantages that the voltage of the material is improved; through increasing the electrochemical activity centers of the material, the volume of the material is increased; in addition, the preparation process of the material is simple; the sodium ion battery with the organic electrode material shows good electrochemical performance.

The invention provides a preparation method of a cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane. The method includes the steps that 3,3'-diaminobenzidine and excess 1,4,5,8-naphthalene tetracarboxylic dianhydride react to obtain anhydride-naphthalene-capped prepolymer, then 1,4,5,8-naphthalene tetracarboxylic dianhydride and excess 2,2'-bis(4-sulfonic phenoxy)benzidine react to obtain amino-capped prepolymer, finally, the anhydride-naphthalene-capped prepolymer and the amino-capped prepolymer are copolymerized according to equal mole to obtain a high-molecular-weight polypyrrolone-sulfonated polyimide segmented copolymer, and after membrane formation and prone exchange, polyphosphoric acid is used for further cross-linking so that the cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane can be obtained. The prepared cross-linking polypyrrolone-sulfonated polyimide segmented copolymer proton exchange membrane has the advantages of being high in mechanical strength and conductivity, low in swelling ratio and good in free radical oxidization resistance.

The invention discloses a preparation method of a fluorine-containing branched sulfonated polyimide proton conducting membrane. The preparation method is characterized by comprising the following steps: under protection of nitrogen gas, adding m-cresol, 1,4,5,8-naphthalene tetracarboxylic dianhydride and benzoic acid into a reactor, and stirring until solid substances are dissolved; adding m-cresol, 2,2'-disulfonic acid benzidine and triethylamine into a container, stirring until the solid substances are dissolved, then adding 1,3,5-tri(2-trifluoromethyl-4-aminophenoxy)benzene, 4,4'-diaminodiphenyl ether to stir to dissolve to obtain a mixture; putting the mixture in a constant-pressure dropping device, and dropwise adding the mixture into a reactor, stirring and heating for 15-24 hours at temperature of 40-100 DEG C; then casting a reacted material into a membrane, and drying the membrane; then soaking and washing to prepare the fluorine-containing branched sulfonated polyimide proton conducting membrane. The prepared fluorine-containing branched sulfonated polyimide proton conducting membrane is good in performance, and is suitable for the fields of all-vanadium redox flow cells, hydrogen oxygen fuel cells, direct methanol fuel cells and the like.

The invention discloses a method for preparing a composite proton-conducting film from branched and sulfonated polyimide/a two-dimensional layered material. The method is characterized in that under the protection of nitrogen, m-cresol, 1,4,5,8-naphthalenetetracarboxylic dianhydride and benzoic acid are put into a reactor; m-cresol, benzidine-2,2'-disulfonic acid and triethylamine are mixed until solids are dissolved, 1,3,5-tri(4-aminophenoxy)benzene and 4,4'-diaminodiphenyl ether are added and stirred until solids are dissolved, and the mixture is added dropwise to the reactor, heated to 40-100 DEG C and subjected to a reaction for 15-24 h; the two-dimensional layered material is dispersed in a dispersing agent, added dropwise to the reactor and subjected to a stirring reaction for 20-24 h, and a reacted material is poured to a glass plate for film casting and is dried; the film is immersed and washed, and the composite proton-conducting film is prepared. The composite proton-conducting film prepared with the method has good performance and is applicable to fields such as vanadium redox batteries, hydrogen-oxygen fuel cells, direct methanol fuel cells and the like.

The present invention relates to a copper foil having a primer resin layer which improves the adhesive strength between a copper foil surface without roughening treatment and a substrate resin and a laminated sheet using the same and is characterized by using a polyimide represented by the following formula (1):

(wherein, R₁ represents a quadrivalent aromatic group which is a residual group of a dicarboxylic acid dianhydride ingredient (pyromellitic acid anhydride, 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride, 3,3′,4,4′-benzophenontetracarboxylic acid dianhydride or 2,3,6,7-naphthalenetetracarboxylic acid dianhydride), R₂ represents a divalent aromatic group which is a residual group of a diamine ingredient (1,3-bis-(3-aminophenoxy)benzene, 3,3′-diamino-4,4′-dihydroxydiphenylsulfone or/and 4,4′-diamino-3,3′,5,5′-tetraethyldiphenylmethane), and n1 represents a repeating number) as a primer resin; and copper foils and laminated sheets having said polyimide layer as a primer have high adhesive strength and are suitable for flexible printed wiring boards.

The invention discloses a segmented copolymer of fully sulfonated polymide and partly sulfonated polybutadiene and a preparation method thereof. Sulfonated diamino monomer and naphthalene tetracarboxylic acid dianhydride monomer in a specific proportion are used as the raw materials to be subjected to polycondensation to obtain amino-terminated fully sulfonated polymide, and thionyl chloride is used for modifying carboxyl terminated polybutadiene to prepare chloroacyl terminated polybutadiene; the above two prepolymers react under the anhydrous condition, thus the segmented copolymer of fully sulfonated polymide and polybutadiene can be obtained; and finally acetyl sulfonic ester prepared by concentrated sulphuric acid and acetic anhydride is used for carrying out post sulfonation on the polybutadiene segment, thus preparing the segmented copolymer of the fully sulfonated polymide and partly sulfonated polybutadiene. The segmented copolymer of the invention is dissolved in an organic solvent and is coated with membranes, thus preparing proton exchange membranes applied to fuel cells. The membranes have good proton-conducting properties and mechanical properties. The segmented copolymer has extensive application prospect in the field of the proton exchange membranes applied to fuel cells.

The invention discloses a preparation method of sulfonated polyimide/titanium dioxide composite proton conductive membrane, characterized in that under the protection of nitrogen, 2,2'-disulfonic acid benzidine, meta-cresol and triethylamine are put into a reactor; then 1,4,5,8-naphthalene tetracarboxylic dianhydride, benzoic acid and 4,4' oxydianiline are added, stirred and heated to 70-100 DEG C for reaction for 2-4 hours; then heated to 180-200 DEG C for reaction for 10-20 hours; and then the mixture is cooled and poured into acetone for filtering; the solids are washed by acetone and then dried to obtain sulfonated polyimide of triethylamine salt type. The sulfonated polyimide of triethylamine salt type is dissolved in an organic solvent, and mixed with an organic solvent dispersion liquid of titanium dioxide powder, then casted for filming, and then dried, immersed and washed to obtain sulfonated polyimide proton /titanium dioxide composite proton conductive membrane; the conductive membrane is suitable for an all-vanadium redox flow battery and a fuel cell with good performance.

The invention provides a surfactant as well as a preparation method and application thereof. The surfactant has relatively high surface activity and good foaming and foam stabilization effects. The molecule of the surfactant comprises 4 hydrophobic chain segments and hydrophilic units, wherein the hydrophobic chain segments are alkyl chains containing 8-18 carbon and the hydrophilic units are quaternary ammonium salt radicals; and the hydrophobic chain segments and the hydrophilic units are in covalent linkage at the part adjacent to quaternary ammonium salt through a bridge connection unit with an aromatic ring structure. The preparation method comprises the following steps: firstly, enabling aromatic tetracarboxylic dianhydride and dibromoethane to react, so as to generate an intermediate with four branch chains; and then enabling the intermediate and alkyl dimethyl tertiary amine to react so that the intermediate is modified with the quaternary ammonium salt radicals with positive charges and hydrophilic carbon chains, wherein the aromatic tetracarboxylic dianhydride is pyromellitic dianhydride, 1,4,5,8-naphthalenetetracarboxylic dianhydride or 3,4,9,10-perylenetetracarboxylic dianhydride, and the alkyl dimethyl tertiary amine is R-N(CH3)2, wherein R is CH3(CH2)n and n is an integer of 7-17.

The invention relates to a preparation method widely used for preparing a 4, 4', 5, 5'-binaphthyl-tetracarboxylic dianhydride monomer of polyimide materials. The method is as follows: 4-halo-1, 8-anhydride naphthalene and potassium hydroxide which is 4 to 10 times of the molar volume of the 4-halo-1, 8-anhydride naphthalene are added with distilled water and heated for dissolving; then a Pd/C catalyst and a reducer are added, the temperature of a reaction system is controlled in a range between 80 and 120 DEG C and the reflux reaction is carried out for 3 to 40 hours; the Pd/C and impurities are filtered out and then hydrochloric acid or nitric acid is added into the filtrate for acidification so as to lead the pH value of the reaction system to be 1 to 3 and obtain yellow emulsion precipitation; the precipitation is washed by distilled water for 3 to 5 times and then is dried in a vacuum oven for 10 to 20 hours at the temperature of 180 to 200 DEG C so as to obtain yellow powder solids; then DMF is adopted for recrystallization so as to obtain the 4, 4', 5, 5'-binaphthyl-tetracarboxylic dianhydride monomer. The method of the invention is characterized by simple and convenient operation, being practical and having good effect.

The invention relates to a preparation method of a flexible and foldable all-organic secondary battery, and belongs to the technical field of electrochemical power sources. The preparation method of the flexible and foldable all-organic secondary battery comprises the following steps: (1) preparation of an anode material and a thin film, namely adding naphthalenetetracarboxylic dianhydride and 4,4'-diaminodiphenyl ether to an n-methyl pyrrolidone (NMP) solution, adding a graphene conducting agent and carrying out reflux reaction in an argon atmosphere to prepare the film; (2) preparation of a cathode material and the thin film, namely putting ferrocene, tetramethylethylenediamine and n-butyl lithium into a Schlenk reaction bottle, adding petroleum ether, reacting and precipitating the mixture, cleaning the sediment with a solvent, adding the petroleum ether, dropwise adding hydrogen methyl dichlorosilane, and carrying out thermochemical polymerization on solid to prepare the film; (3) preparation of polymer gel electrolyte, namely mixing polyvinyl pyrrolidone with NaCl/H2O liquid; and (4) battery assembly, assembling the cathode material film, the anode material film and the gel electrolyte into the battery. The preparation method has the advantages that the process is stable; the product is ultrathin, controllable, flexible, foldable, easy to design, safe and nontoxic, and can meet the requirements of human body fitting comfort and special occasions.

The invention relates to a 1,4,5,8-naphthalenetetracarboxylic acid diimide derivative bifluorescence material which has a chemical name of N-(2-ethylhexyl)-N-R- naphthalenetetracarboxylic formyl diimide compound and has a chemical formula; in the formula, R is selected from an a structural formula. A preparation method of the bifluorescence material takes naphthalene tetracarboxylic acid dianhydride of industrial product as raw materials which are first imidized with 2-ethyl-hexylamine to obtain an intermediate (1) N-(2-ethylhexyl)-naphthalene-1,8-dimethyl benzene anhydride-4,5-dicarboximide, and then the intermediate (1) is respectively imidized with 4-amino-1,2,4-triazole or 2-aminopyridine or 2-amino-4,6-dimethylpyrimidine to obtain a target product, and the imidization is that the raw materials are reacted for at least 5 hours at 140-160 DEG C under the protection of nitrogen in organic solvent and in the presence of catalyst zinc acetate.

The invention discloses heat radiation paint for an LED (light emitting diode) lamp. The heat radiation paint is prepared from the following ingredients: drift-sand, polyfluortetraethylene particles, nanometer titanium dioxide, purple sand, silicon nitride, KH-560, KH-550, epoxy-terminated polyether amine, beta-cyclodextrin modified amino-terminated sulfonated polybenzimidazole, 1,4,5,8-naphthalenetetracarboxylic dianhydride, 8-naphthylamine-1-sulphonic acid, 1,5-naphthalenedisulfonic acid, lauryl mercaptan, ethanol and de-ionized water.

The invention discloses a broad-spectrum-response polynaphthalimide photocatalytic material and a preparation method thereof. The reaction method comprises the following steps: dissolving two monomersin an organic solvent, reacting at 0-5 DEG C for 24-48 hours to generate polyamic acid, and continuously reacting at 300-350 DEG C for 1-2 hours to imidize into the polynaphthalimide photocatalytic material, wherein a first monomer is naphthalenetetracarboxylic dianhydride and derivatives thereof; a second monomer is conjugated aromatic amine or heterocyclic amine with an amino functional group;and the molar ratio of the anhydride functional group of the first monomer to the amino functional group of the second monomer is 1:1-1.5:1. The polynaphthalimide photocatalytic material with wide spectral response (200-1400 nm) is prepared by adopting the preparation method which is simple to operate and mild in reaction condition. The material can effectively degrade organic pollutants under ultraviolet light or visible light, and has wide application prospects in the aspects of energy and environment.

The invention relates to a segmented copolymer of side chain sulfonated type polyimide and sulfonated polybutadiene and a preparation method thereof. The preparation method comprises the following steps: firstly synthesizing a novel sulfonated diammine monomer, polymerizing the monomer and naphthalenetetracarboxylic dianhydride which are used as raw materials to obtain terminal amino side chain sulfonated type polyimide; modifying terminal carboxyl polybutadiene by using thionyl chloride to obtain terminal acyl chloro polybutadiene; carrying out polycondensation reaction on the two preformed polymers under an waterless condition, and synthesizing to obtain the segmented copolymer of the side chain sulfonated type polyimide and the polybutadiene; and finally selectively sulfonating the segmented copolymer by using acetyl sulface prepared from concentrated sulfuric acid and acetic anhydride to obtain the segmented copolymer of the side chain sulfonated type polyimide and the sulfonated polybutadiene. The segmented copolymer is dissolved in an organic solvent and is coated with a film to prepare a proton exchange film for a fuel cell. The film has good proton electric conductivity and hydrolytic stability, and has extensive application prospects in the field of proton exchange films for fuel cells.

The invention relates to extinction type polyester resin for an HAA system. Terephthalic acid, tetrahydrophthalic acid, 2-amino-4,6-dihydroxypyrimidine, neopentyl glycol, 1,10-decanediol, diacetone-D-mannitol, 1,4,5,8-naphthalenetetracarboxylic dianhydride, 5-methyl isophthalic acid and trimethyl citrate are adopted as raw materials. All the components are matched with one another and have a synergistic effect so that the molecular weight distribution of the finally obtained polyester resin is not uniform and polybasic acids for end capping are different in type, and therefore, when the polyester resin with different end-capping functional groups and HAA are cured, the reaction activity difference is large, the curing process cannot be synchronously carried out, the cured coating surface shrinks, and the surface gloss is effectively low. Experimental data show that when the prepared extinction type polyester resin is used for preparing extinction type powder coating of an HAA system, acoating film with the glossiness smaller than 15% can be obtained, and excellent comprehensive performance is achieved.

The invention relates to an application of a naphthalene tetracarboxylic acid dianhydride derivative in the aspect of interface modification of an electron transport layer/cathode in an inverted perovskite solar cell. The compound structure of the naphthalene tetracarboxylic acid dianhydride derivative is shown as the following: in the formula, R1 and R2 can be the same or different and are independently selected from C1-C20 long alkyl group chain, X is C1, Br or I, and n=0-16. The inverted perovskite solar cell device structure is: ITO/hole transport layer/perovskite layer/electron transport layer/cathode. The naphthalene tetracarboxylic acid dianhydride derivative is used on the interface of the electron transport layer/cathode in the perovskite solar cell. Firstly, the morphology of the electron transport layer can be adjusted, the defect density in the film is reduced, and the quality of the electron transport layer is improved; secondly, as the naphthalene tetracarboxylic acid dianhydride derivative interface modification layer is introduced, transport of electrons from the electron transport layer to the cathode can be effectively accelerated, and the device efficiency can be improved; and besides, as the naphthalene tetracarboxylic acid dianhydride derivative has good solubility, the naphthalene tetracarboxylic acid dianhydride derivative can be introduced to the perovskite solar cell through a solution spin coating method, the operation is extremely simple, and the repeatability is good.

The invention belongs to the technical field of supramolecular chemistry, and particularly relates to a novel diimide macrocyclic compound. The compound has the following general structural forma shown in the description, wherein R1 is pyridyl or phenyl; R2 is straight chain or branch-chain-comprising alkane; R3 is 1,4,5,8-naphthalenetetracarboxylic acid dianhydride or 1,6,7,12-tetrachloro-3,4,9,10-tetracarboxylic acid dianhydride; R4 is one of 3,3-bipyridine, 3,5-bis(pyridin-3-yl)pyridine, (5-pyridin-3-ylpyridin-3-yl) methanol, 1,4-bis(bromomethyl) benzene, 2,6-bis(bromomethyl) naphthalene or1,4-bis(bromomethyl) benzene.

The invention relates to a phosphonic acid doped cross-linked sulfonated polyiminobenzimidazole high-temperature proton exchange membrane and a preparation method thereof. The preparation method includes: 1), in a nitrogen atmosphere, dissolving diaminodisulfonic acid in a solvent to obtain a diaminodisulfonic acid solution, adding benzidine, aminophenylbenzimidazole and naphthalene tetracarboxylic acid dianhydride into the diaminodisulfonic acid solution, fully stirring well at room temperature, heating for reaction, naturally cooling to room temperature, adding a diluent, fully stirring, filtering, washing and drying solid substance which is filtered out to obtain sulfonated polyiminobenzimidazole; 2), dissolving the sulfonated polyiminobenzimidazole in dimethylsulfoxide to obtain a solution, adding dibromodiphenyl ether, mixing well, and allowing reaction to obtain a high-temperature proton exchange membrane; 3), disposing the high-temperature proton exchange membrane in an amino trimethylene phosphonic acid water solution for soaking, washing, and heating for reaction to obtain the phosphonic acid doped cross-linked sulfonated polyiminobenzimidazole high-temperature proton exchange membrane.

The invention discloses perfluoroalkyl group modified solution-processable naphthalimide and a preparation method thereof, the structural formula of the naphthalimide is shown by the formula A (the formula is shown in the description), wherein the R in the formula A represents perfluoroalkyl group substituent group, which is specifically shown as the formula B, and m is selected from 1, 2, 3, 4, 5 and 6; n is selected from 1, 3, 5 and 7; X is H, Cl or Br; the preparation method of the naphthalimide comprises the steps that halogenated 1,4,5,8-Naphthalenetetracarboxylic dianhydride and the perfluoroalkyl group are taken as the starting raw materials, the mole ratio is (1:1)-(1:10), in an organic solvent, the mixture is stirred for 1-24 h under the protection of argon or nitrogen in the temperature range from the room temperature to the backflow temperature of the used solvent, the 1,4,5,8-Naphthalenetetracarboxylic dianhydride and the perfluoroalkyl group are in reaction, and the perfluoroalkyl group modified naphthalimide is generated. According to the perfluoroalkyl group modified solution-processable naphthalimide and the preparation method thereof, the alkyl group and the perfluoroalkyl group are introduced simultaneously on the matrix of the naphthalimide, the solubility of the material in the organic solvent can be enhanced remarkably, and at the same time, the light and heat stability of the naphthalimide and the device stability of the naphthalimide in the field effect transistor are enhanced.

The invention provides a polyimide film for an artificial graphite film, a preparation method of the polyimide film and the artificial graphite film. The polyimide film is formed by polymerizing dianhydride and diamine; the diamine is selected from p-phenylenediamine or 4,4'-diaminodiphenyl ether; the dianhydride comprises dianhydride A and dianhydride B, and the dianhydride A is selected from oneof 3,3',4,4'-biphenyl tetracarboxylic dianhydride or pyromellitic dianhydride; and the dianhydride B is selected from one or two of 1,4,5,8-naphthalene tetracarboxylic dianhydride, binaphthalene dianhydride or perylene anhydride. By regulating and controlling the formula of the polyimide film, the imidization degree is improved, the obtained polyimide film is good in crystal orientation and highin birefringence, and the obtained artificial graphite film is excellent in performance.