843 results about "Substitution reaction" patented technology

The invention belongs to the technical field of flame-retardant materials, and particularly relates to preparation of a phosphorus, nitrogen and silicon macromolecular flame retardant and application of the phosphorus, nitrogen and silicon macromolecular flame retardant in epoxy resin. The preparation method comprises the following steps: firstly, carrying out substitution reaction on chlorosilane and syringaldehyde or vanillic aldehyde to synthesize a silicon-containing intermediate, then carrying out Schiff base reaction on the silicon-containing intermediate and an amine compound, and finally carrying out addition reaction on the silicon-containing intermediate and a phosphorus-containing compound to prepare the phosphorus, nitrogen and silicon macromolecular flame retardant. The flame retardant has a good flame-retardant effect, can be used for preparing flame-retardant epoxy resin, can effectively improve the limit oxygen index and the vertical combustion grade of the epoxy resin, and can endow the epoxy resin with good transparency and molten drop resistance.

The invention discloses a compound containing a urea structure as well as a preparation method and application of the compound in a color developing agent, and relates to the technical field of color developing agents. The compound containing the urea structure is a # imgabs0 # structure as shown in a formula 1. The compound containing the urea structure is synthesized through multiple steps of Suzuki reaction, bromination reaction and substitution reaction. The compound is used as an electron donor to be applied to a thermosensitive color development system and forms a color development composition with a phenolic compound and an acidic material, and the activation temperature is as low as 60-120 DEG C. The ureido structure stabilizes a reaction intermediate through a hydrogen bond network, enhances the electron transfer efficiency, and significantly improves the color developing sensitivity; the aryl / heteroaryl substituent optimizes the color contrast through the conjugation effect, and meanwhile, the synergistic effect of the hot-melt filler ensures the stability of the system. Compared with a traditional color developing agent, the color developing agent has the advantages of low-temperature activation, high color developing intensity and excellent weather resistance, is suitable for the fields of thermal printing, anti-counterfeiting materials and the like, and overcomes the defects of high reaction temperature and insufficient stability in the prior art.

The invention discloses a preparation method of a multifunctional group synergistic modified aluminum silicate nanofiber membrane, which comprises the following steps: modifying aluminum silicate nanofiber by using an amino silane coupling agent to obtain aminated aluminum silicate nanofiber; grafting a polyamino compound to the surface of the aminated aluminum silicate nanofiber by utilizing the cross-linking effect of 1, 3-dichloropropanol through a substitution reaction of amino and chlorine, so as to obtain a multifunctional aluminum silicate nanofiber; 2-butenal is modified on the surface of the multi-functionalized aluminum silicate nanofiber by utilizing an ammonia-aldehyde condensation reaction, so that the multi-functionalized aluminum silicate nanofiber rich in double bonds is obtained; carrying out cross-linking polymerization by taking itaconic acid as a monomer and the multi-functional aluminum silicate nanofiber rich in double bonds as a cross-linking agent, then carrying out suction filtration to form a membrane, and drying to obtain the multi-functional synergistic modified aluminum silicate nanofiber membrane with the gram weight not exceeding 15g / m < 2 >. According to the invention, high-efficiency adsorption of heavy metals is realized, and the problem that aluminum silicate nanofibers are not easy to recover is solved.

The invention provides a method for preparing squaric acid and a method for preparing a lithium supplement agent of lithium squarate. The method for preparing squaric acid comprises the steps of preparing an intermediate I, preparing an intermediate II and preparing squaric acid. The method for preparing the squaric acid is a novel squaric acid synthesis route, and the squaric acid is obtained through cycloaddition / substitution reaction of perchloroprene serving as an initial raw material and morpholine, hydrolysis / rearrangement reaction in a buffer system and acid hydrolysis reaction in sequence. The method for preparing squaric acid has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and the like. The invention also provides a method for preparing the lithium squarate lithium supplement agent, and the prepared squaric acid and lithium-containing alkali are blended in a solvent for reaction to generate the lithium squarate. The method for preparing the lithium squarate lithium supplement has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and the like.

The invention relates to a preparation method of 2-(2-amino-5-bromo-benzoyl) pyridine, which comprises the following steps: by taking 1, 2-diphenyl-1H-benzimidazole (I) as a starting material, oxidizing under the action of chromium trioxide and acetic acid to obtain N-[2-(2-pyridinecarbonyl) phenyl] benzamide (II), hydrolyzing the N-[2-(2-pyridinecarbonyl) phenyl] benzamide (II) under the action of sulfuric acid to obtain 2-(2-aminobenzoyl) pyridine (III), and reacting the 2-(2-amino-5-bromo-benzoyl) pyridine (III) with the 2-(2-amino-5-bromo-benzoyl) pyridine (III) to obtain the 2-(2-amino-5-bromo-benzoyl) pyridine. And (III) performing substitution reaction with NBS in DCM to obtain the target product 2-(2-amino-5-bromo-benzoyl) pyridine. The method has the advantages of mild reaction conditions, higher product purity, high yield, simplicity and convenience in operation, low cost and easiness in industrialization.

The invention provides a preparation method of a bexagliflozin intermediate, and relates to the technical field of organic synthesis. The preparation method provided by the invention comprises the following steps: S1, substitution reaction: under the action of alkali, carrying out substitution reaction on 2-(cyclopropoxy) ethanol and a compound III ((5-halogen-2-chlorphenyl) (4-halophenyl) ketone) to generate a compound II; s2, reduction reaction: under the action of lewis acid, carrying out reduction reaction on a reducing agent and a compound II ((5-halogen-2-chlorphenyl) (4-(2-(cyclopropoxy) ethyoxyl) phenyl) ketone) to generate a compound I; the method has the advantages of mild reaction conditions, high atom utilization rate, high yield, high product quality and the like.

The invention discloses a polyurethane coating and a preparation method thereof, and belongs to the technical field of antibacterial coatings. The preparation method of the polyurethane coating comprises the following steps: carrying out acyl chloride substitution reaction on a phenolic substance and a chlorine donor to obtain an intermediate reactant, and carrying out conjugate addition reaction on the intermediate reactant and an amine substance with hydroxyl groups at two ends to obtain antibacterial diol; reacting the antibacterial diol with isocyanate to obtain a polyurethane coating; the phenolic substance is selected from at least one of thymol, carvacrol, paeonol, catechol and theaflavin. The antibacterial coating is applied to the aspect of an antibacterial coating of a food contact part, the problem that the antibacterial property of an existing antibacterial coating is difficult to last is solved, and the antibacterial coating has the synergistic antibacterial effect of killing and defending bacteria.

The invention relates to a gemini surfactant for thickened oil recovery and a preparation method thereof, and belongs to the technical field of thickened oil recovery. The preparation method of the gemini surfactant for thickened oil recovery comprises the following steps: dissolving ethylene glycol dihydric alcohol and paratoluensulfonyl chloride in a tetrahydrofuran solvent, and carrying out substitution reaction under an alkaline condition to obtain an intermediate I; adding nonyl phenol and the intermediate I into a mixed solvent of tetrahydrofuran and N, N-dimethylformamide, and carrying out etherification reaction under an alkaline condition to obtain a gemini precursor II; and mixing an alkylphenol polyoxyethylene ether surfactant, the gemini precursor II and a formaldehyde aqueous solution, and carrying out a phenolic aldehyde condensation polymerization reaction under an acidic condition to obtain the gemini surfactant. The gemini surfactant prepared by the preparation method has good temperature resistance and salt tolerance, the preparation method is simple, the synthesis cost is low, and the gemini surfactant has good economical efficiency and is beneficial to realizing large-scale industrial production.

The invention discloses a cationic self-assembly high-temperature-resistant clay stabilizer and a preparation method thereof.The preparation method sequentially comprises the following steps that firstly, N-methylbenzylamine, diethylenetriamine and epichlorohydrin are subjected to a substitution reaction, and polyquaternary ammonium containing quaternary ammonium ions and benzyl is prepared; then carrying out a reaction on the mono6-amino-beta-cyclodextrin and epoxy chloropropane, so as to prepare a beta-cyclodextrin-epoxy chloropropane condensation compound; and finally, blending and assembling the two substances to generate the cation assembled compound with relatively high cation degree and high temperature resistance. Polyquaternary ammonium containing quaternary ammonium ions and benzyl in the cation assembly compound provides quaternary ammonium cations combined with anionic charges on the surface of stratum clay minerals on one hand, and provides benzene rings combined with beta-CD holes of the beta-cyclodextrin-epichlorohydrin condensation compound on the other hand. The prepared clay stabilizer has good high temperature resistance, has a good clay anti-swelling effect under a strong alkaline condition, and can improve the crude oil recovery rate.

The invention provides a preparation method and application of an asymmetric dicyclopentadienyl dialkoxy zirconium compound, and the preparation method comprises the following steps: (1) mixing a solvent with ZrCl4 and sodium cyclopentadienyl CpNa, and carrying out a reaction to obtain CpZrCl3; (2) the CpZrCl3 obtained in the step (1) and R1 substituted sodium cyclopentadienyl R1CpNa are subjected to a mixed reaction, and (R1Cp) CpZrCl2 is obtained; and (3) mixing the (R1Cp) CpZrCl2 obtained in the step (2) with alkoxy sodium salt R2Na, and carrying out a reaction so as to obtain the asymmetric dicyclopentadiene dialkoxy zirconium compound. According to the method, the substitution reaction of three sodium salts is used for replacing the ligand replacement reaction in the prior art, so that the reaction steps are shortened, the use of unnecessary raw materials is avoided, the production cost is reduced, and the obtained target product is high in yield and high in purity.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of perfluorohexyl octane. The preparation method comprises the following steps: by taking perfluorohexyl ethyl iodide as a raw material, firstly carrying out Grignard reagent exchange with a reagent A, and then carrying out nucleophilic addition reaction with n-hexanal to obtain a compound III; carrying out esterification and substitution on the compound III to prepare a compound V, or carrying out an Apple substitution reaction to prepare the compound V; and carrying out reduction reaction on the compound V, rectifying and purifying to obtain a target product. The reagent A comprises an isopropyl magnesium chloride tetrahydrofuran solution, a methyl magnesium chloride tetrahydrofuran solution, a methyl magnesium bromide tetrahydrofuran solution, an ethyl magnesium chloride tetrahydrofuran solution, an ethyl magnesium bromide tetrahydrofuran solution and / or a phenyl magnesium bromide tetrahydrofuran solution. According to the method, the perfluorohexyl ethyl iodide and the n-hexanal are used as raw materials to prepare the perfluorohexyl octane, isomer impurities are fundamentally avoided, and the method has the advantages that purification is easy, the yield is high, the product purity is high, and industrial production is facilitated.

The invention discloses a novel BOPP (biaxially-oriented polypropylene) pearlized film loaded with a composite antibacterial material as well as a preparation method and application of the novel BOPP pearlized film, and the specific scheme is as follows: a KH550 coupling agent is hydrolyzed, a hydrolysate is modified on nano titanium dioxide (TiO2) particles, a natural antibacterial material eugenol (Eug) is brominated by a substitution reaction, and an Eug-TiO2 composite antibacterial material is further prepared based on nucleophilic substitution. And finally, carrying out melting plasticizing, extrusion casting and two-way stretching on polypropylene and pearlescent master batch to prepare the novel BOPP antibacterial pearlescent film, so that the strong activity, high stability, long action time, safety and environmental protection of the antibacterial process of the BOPP pearlescent film are realized, the added value attribute of the BOPP product is improved, and the application scene of the BOPP pearlescent film is expanded.

The invention discloses a crown ether cation selective separation membrane and a preparation method thereof. The preparation method comprises the following steps: carrying out super acid catalysis on dibenzo-18-crown-6, terphenyl and isatin in dichloromethane to synthesize a precursor; carrying out affinity substitution reaction on the precursor and a flexible side chain with an ion exchange group through a pre-modification method to obtain a functional precursor; dissolving the functionalized precursor in an organic solvent to form a film casting solution, coating on a glass plate, and heating to volatilize the solvent so as to form a film through curing; and taking down the membrane from the glass plate, acidifying in an acidic aqueous solution, washing with deionized water, and extracting with deionized water to obtain the crown ether cation selective separation membrane. The crown ether cation selective separation membrane has the advantages of relatively high mechanical strength, physical and chemical stability and the like. Meanwhile, the crown ether cation selective separation membrane shows performance superior to that of a commercial membrane in the field of monovalent cation separation, and has wide application prospects in the fields of TMAH purification, salt lake lithium extraction, seawater salt extraction and the like.

The invention provides a preparation method of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine, and belongs to the technical field of sun-screening agent preparation. The preparation method of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine comprises the following steps: carrying out substitution reaction on a compound in a formula I to obtain a compound in a formula II; performing hydrolysis reaction on the compound in the formula II to obtain a compound in a formula III; and carrying out Friedel-Crafts reaction on the compound shown in the formula III and cyanuric chloride to obtain a compound shown in a formula IV. The preparation method comprises the following steps: reacting benzoic acid-3-hydroxyphenyl ester with n-butyl bromide to obtain benzoic acid-3-(butyloxy) phenyl ester, removing benzoyl from the benzoic acid-3-(butyloxy) phenyl ester to obtain 3-(butyloxy) phenol, and reacting 3-(butyloxy) phenol with cyanuric chloride to obtain 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine, so that the yield of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased, and the yield of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased. The yield of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased, and the production cost of the yield of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is reduced.

The invention discloses a smoke-suppression flame-retardant ecological board and a preparation method thereof. The ecological board comprises a base material, a flame-retardant adhesive layer and a facing layer which are sequentially stacked, wherein the flame-retardant adhesive layer is prepared from the following raw materials: 100 parts of urea-formaldehyde resin, 10-15 parts of a phosphorus-nitrogen composite flame retardant and 5-10 parts of flame-retardant filler; the preparation method of the phosphorus-nitrogen composite flame retardant comprises the following steps: carrying out an aminomethylation reaction on p-hydroxybenzoic acid, ethanolamine and paraformaldehyde which are used as raw materials in a molar ratio of 1: (1-1.2): (2-2.2) to prepare a Mannich base intermediate; and carrying out substitution reaction on the Mannich base intermediate and phosphonitrilic chloride trimer serving as raw materials according to the molar ratio of (3-7): 1. The phosphorus-nitrogen flame retardant disclosed by the invention is high in content of phosphorus and nitrogen elements and uniform in distribution ratio, and has more excellent synergistic smoke suppression and flame retardant effects compared with an existing physical compound system.

The invention belongs to the field of chemical synthesis of pesticides, and discloses a preparation method of a benzoxazole intermediate, which comprises the following steps: (1) carrying out substitution reaction on a compound with a structure as shown in a formula III to obtain a compound with a structure as shown in a formula IV; (2) carrying out oxidation reaction on the compound with the structure as shown in the formula IV prepared in the step (1) to obtain a benzoxazole intermediate with a structure as shown in a formula V; # imgabs0 #

The present invention provides a preparation method of lithium difluorooxalate borate, belonging to the technical field of lithium battery electrolyte additives. The present invention obtains a bis(methylsilyl) oxalate compound by a substitution reaction between a methylchlorosilane compound and oxalic acid, and mixes the bis(methylsilyl) oxalate compound with lithium oxalate, a boron trifluoride complex and an organic solvent to obtain lithium difluorooxalate borate; wherein the bis(methylsilyl) oxalate compound is used as a raw material, has strong reaction activity, generates a stable methylfluorosilane gas byproduct while introducing oxalate into the system, and does not cause chloride ions and free acid residues; in addition, when the raw material is bis(trimethylsilyl) oxalate, even if there is a small amount of raw material residue, it can be used as a new multifunctional electrolyte additive, play a certain synergistic role, and can improve the compatibility between electrolytes. The whole process is simple, the product yield obtained by the reaction is high, the product purity is high, and the separation is easy, which is suitable for industrial production.

The invention relates to the technical field of organic dyes, in particular to a novel xanthene dye for blue photoresist color paste and a synthesis method of the novel xanthene dye. The invention relates to a synthesis method of a novel xanthene dye for blue photoresist color paste, which comprises the following steps: 1) taking rigid cyclic amine as a nucleophilic reagent, and carrying out aromatic nucleophilic substitution reaction on a chlorinated xanthene compound to obtain a xanthene intermediate; 2) performing chlorination reaction on the xanthene intermediate by using a chlorination reagent to obtain a chlorinated xanthene intermediate; 3) mixing active amine and the chlorinated xanthene intermediate, and performing substitution reaction under the action of alkali to obtain the novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste has the advantages of being high in solubility, good in thermal stability and high in contrast ratio.

The invention discloses a cellulose acetate based 1, 8-naphthalimide fluorescent probe for detecting Hg < 2 + > as well as a preparation method and application of the cellulose acetate based 1, 8-naphthalimide fluorescent probe. The preparation method comprises the following steps: by taking 4-bromo-1, 8-naphthalic anhydride as a raw material, carrying out condensation reaction on the 4-bromo-1, 8-naphthalic anhydride and 4-aminobutyric acid to prepare 4-(4-bromo-1, 8-naphthalic diimide) butyric acid (BNA-B); the BNA-B and piperazine are subjected to a substitution reaction, and a compound PNA-B is prepared; the PNA-B and 4-(bromomethyl) pyridine hydrochloride are subjected to a substitution reaction, and a compound PNA-B is prepared; and the PNA-B and cellulose acetate (CA) are subjected to an esterification reaction, such that the cellulose acetate-based 1, 8-naphthalimide fluorescent probe PNA-CA is prepared. The compound can specifically recognize Hg < 2 + >, after Hg < 2 + > is added into a PNA-CA acetonitrile / PBS buffer solution under 365nm ultraviolet irradiation, the fluorescence color of the solution is changed from colorless to yellow, the response time is 20s, the detection limit reaches 9.3 * 10 <-8 > M, and the probe has a good application prospect.

The present disclosure provides anionic citrate-based composition for use in regenerative applications. The disclosed composition may take the form of a scaffold and generally includes (i) a citrate component, (ii) a diol, and (iii) an anionic moiety. The anionic moiety may include one or more of a sulfate, sulfonate, phosphate, phosphonate, sulfamate, or carboxylic acid, The sulfate and / or sulfonate containing moiety may be conjugated via an amidation reaction, esterification, and / or substitution reaction with a sulfur trioxide complex. A peptide may be conjugated to a surface of the composition.

The invention provides a synthetic method of an o-carborane compound. The synthetic method is suitable for preparing an ester group substituted o-carborane derivative. The synthesis method comprises the following synthesis steps: by taking 1-carboxyl-2-(substituent)-o-carborane and a hypervalent iodine reagent as raw materials, carrying out hydration and substitution reaction in a solvent at the reaction temperature of 50-120 DEG C for 2-36 hours to generate the 1-ester-2-(substituent)-o-carborane compound. The reactants involved in the invention have good universality, and the functional groups of the substrate have good compatibility; the synthesis method provided by the invention is relatively high in selectivity and yield, single in reaction system composition, simple in post-treatment and easy to implement.

The invention discloses a ruthenium complex as well as a preparation method and application thereof, and belongs to the technical field of organic synthesis. The polypyridine ligand and the ruthenium dimer are combined through the substitution reaction, the chelate of the polypyridine ligand and the ruthenium aromatic hydrocarbon is obtained, the synthesis process is simple, the cost is low, and the chelate can be combined with an existing medicine to improve and enhance the medication curative effect. The prepared ruthenium complex can effectively inhibit cancer cell proliferation, and especially shows an excellent anti-proliferation effect on cervical cancer cells. And the liposome can improve the lipophilicity / lipophilicity of the ruthenium medicines and increase the stability of the medicines, and has better anti-tumor activity compared with platinum medicines and unmodified ruthenium medicines.

The invention relates to a preparation method of (S, S)-2, 8-diazabicyclo [4, 3, 0] nonane and an intermediate of the (S, S)-2, 8-diazabicyclo [4, 3, 0] nonane. Specifically, the invention discloses a method for preparing (S, S)-2, 8-diazabicyclo [4, 3, 0] nonane from a cheap raw material 2-chloronicotinic acid through an esterification reaction, a substitution reaction, a reduction reaction and an asymmetric hydrogenation reaction, and the method is novel in route, simple to operate, high in product yield, good in purity, safe, environment-friendly and very suitable for industrial production.

The invention belongs to the technical field of synthesis of organic compounds, and particularly relates to a benzocrown ether derivative and a synthesis method thereof. According to the invention, carboxylic acid or substituted carboxylic acid as shown in a general formula I, benzocrown ether as shown in a general formula II and substituted terephthalaldehyde as shown in a general formula IV are used as raw materials, and two kinds of benzocrown ether derivatives as shown in a general formula (A) and a general formula (B) are synthesized through Friedel-Crafts acylation reaction, reduction reaction and substitution reaction. The preparation method provided by the invention has the advantages of simple and easily available raw materials, simple post-treatment, high yield, good universality, environmental friendliness and the like. The two benzocrown ether derivatives as shown in the general formula (A) and the general formula (B), which are disclosed by the invention, serve as important organic synthesis intermediates and have great research values in the aspects of ion recognition, material preparation, medicine synthesis and the like.

The invention discloses a synthesis method of helicid, and relates to the technical field of compound synthesis, glucose is taken as an initial raw material, allose is obtained through a series of reactions, pentaacetyl allose is prepared from allose through acetylation reaction, tetraacetyl alloside is prepared through selective deacetylation reaction, substitution reaction and nucleophilic substitution reaction, and the helicid is synthesized through a one-step method. And finally, carrying out a deacetylation reaction on the tetraacetyl alloside to prepare helicid. Helicid has the effects of calming, sleeping, easing pain and resisting inflammation, and can be applied to preparation of medicaments with corresponding effects. The preparation method of the helicid provided by the invention is simple to operate, can be used for large-scale industrial production, and overcomes the defect of insufficient yield of naturally extracted helicid.

The invention provides a preparation method and device of prothioconazole. The preparation method comprises the following steps: carrying out Grignard reaction on o-chlorobenzyl chloride and magnesium powder in a mixed solvent of toluene and 2-methyltetrahydrofuran; the method comprises the following steps: carrying out Grignard addition reaction on a Grignard reagent and 2-chloro-1-(1-chlorocyclopropyl) ethanone; the preparation method comprises the following steps: carrying out substitution reaction on 1-chloro-2-(1-chlorocyclopropyl)-3-(2-chlorphenyl) propanol and hydrazine hydrate in an alcohol solvent; the preparation method comprises the following steps: carrying out ring closing reaction on 2-(1-chlorocyclopropyl)-1-(2-chlorphenyl)-3-hydrazino-2-alcohol, a formaldehyde solution, a sodium thiocyanate solution and a sodium hydrogen sulfate solution; the preparation method comprises the following steps: carrying out oxidation reaction on 2-(2-chlorocyclopropyl)-3-(2-chlorphenyl)-2-hydroxypropyl)-1, 2, 4-triazolidine-3-thioketone, air and inorganic alkali, so as to obtain prothioconazole. The method can improve the efficiency of the oxidation reaction and the yield and purity of prothioconazole, and is more suitable for industrial production of prothioconazole.

The invention discloses a fluorenyl diphosphoric acid type self-assembled monomolecular layer hole transport material which takes a fluorene unit as a core and a diphenylamine group as a donor, and is a self-assembled monomolecular layer hole transport material with two phosphoric acid anchoring groups. The preparation method of the hole transport material comprises the following steps: (a) carrying out substitution reaction on 2, 7-dibromofluorene and dibromo-substituted alkane to obtain an intermediate I; (b) carrying out rearrangement reaction on the intermediate I and triethyl phosphite to obtain an intermediate II; (c) carrying out coupling reaction on the intermediate II and a diphenylamine derivative to obtain an intermediate III; and (d) mixing the intermediate III with a hydrolysis reagent, and carrying out hydrolysis reaction to obtain the fluorenyl diphosphonic acid type self-assembled monomolecular layer hole transport material. The invention also discloses an application of the material in a trans-perovskite solar cell. The hole transport material is low in synthesis cost and simple in route, has dual functions of hole transport and defect passivation, and has two phosphate groups to enhance the self-assembly strength and stability of the hole transport material.

The invention provides a material for heavy metal mineralization as well as a preparation method and application thereof, and belongs to the technical field of soil remediation. The preparation method of the material for heavy metal mineralization provided by the invention comprises the following steps: mixing a silicate solution with insoluble phosphate for substitution reaction to obtain a mixed solution; and mixing the mixed solution with an acidic solution, gelatinizing, and drying to obtain the material for heavy metal mineralization. According to the invention, the silicate solution and the insoluble phosphate are mixed for reaction, so that phosphate radicals in the insoluble phosphate enter the solution, and the reactivity of the material in the use process is improved; the acid solution is added for gelling, so that phosphorus-containing wastewater can be effectively prevented from being generated; the material is changed into a porous structure through drying, more active sites are provided for heavy metal attachment, and then heavy metal is better fixed. The result of the embodiment shows that the prepared material for heavy metal mineralization has a good heavy metal repairing effect.

The present invention belongs to the technical field of covalent organic frameworks, and particularly relates to a method for preparing a single-crystalline vinylidene-bridged covalent organic framework. The method for preparing a single-crystalline vinylidene-bridged covalent organic framework comprises: mixing a single-crystalline imine-linked covalent organic framework, an active monomer, a catalyst and an organic solvent until uniform, and then performing a substitution reaction, wherein the substitution reaction is one or more of an aldol condensation reaction, a Knoevenagel condensation reaction, and a Claisen-Schmidt reaction. The single-crystalline vinylidene-bridged covalent organic framework having good stability, rich active sites, high photoelectric activity and a high conjugation degree is obtained by means of a substitution reaction of the single-crystalline imine-linked covalent organic framework and the active monomer under the action of a catalyst.

The invention discloses a sulfide solid electrolyte of a lithium ion battery, comprising: a sulfide solid electrolyte matrix comprising sulfur; the surface of the sulfide solid electrolyte matrix is coated with the coating layer, and the coating layer is formed by substitution reaction of metal chloride, 1-undecyl mercaptan and sulfur. The sulfide solid electrolyte disclosed by the invention is a sulfide solid electrolyte with high ionic conductivity and good interface stability at the same time. The invention also discloses a preparation method of the sulfide solid electrolyte, a composite sulfide solid electrolyte and a preparation method of the composite sulfide solid electrolyte.