31 results about "Imidogen" patented technology

The invention discloses a method for improving the crystallinity and catalytic water decomposition performance of a polyheptazine imino carbon nitride photocatalyst, and belongs to the technical field of photocatalytic material preparation. The preparation method comprises the following steps: firstly, by taking melamine as a precursor, carrying out thermal polymerization to obtain an oligomer melt consisting of heptazine units; then carrying out high-temperature fused salt calcination treatment in a nitrogen atmosphere to obtain carbon nitride with a certain crystallinity; and adding sodium chloride as a structure regulator, fully grinding, calcining in vacuum, washing with water, and drying to obtain the crystalline-phase carbon nitride photocatalyst with high crystallinity. The method is simple, the cost is low, the actual production requirement is met, and the synthesized photocatalyst has good polymerization degree and light absorption performance, has excellent activity of fully decomposing water to produce hydrogen and oxygen under the condition of no sacrificial agent, and has the potential of realizing photocatalytic full-decomposition water diversion and the prospect of industrial application.

The invention relates to the technical field of adsorption materials, and discloses a post-modified imine-COF adsorbent and a preparation method and application thereof, the adsorbent comprises the following structural units: a COF skeleton, which is a two-dimensional or three-dimensional porous skeleton formed by an aromatic aldehyde monomer and an amino monomer through a Schiff base reaction; the imine group is formed in a COF skeleton through a post-modification reaction, and the imine group is-C = NR, r is selected from one or more of a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkenyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted heterocyclic group and a hydrogen atom. The adsorbent retains excellent structural characteristics of the COF material, realizes high density and uniform distribution of functional groups, and avoids interference of functional monomers on crystal nucleation and growth, so that the adsorption performance of the adsorbent is improved, and the adsorbent can efficiently capture rare earth when being applied to a rare earth-containing solution.

The invention provides a preparation method and application of a donor-receptor type two-dimensional imino CTF photocatalyst, and belongs to the technical field of photocatalyst preparation.The preparation method of the CTF photocatalyst comprises the following steps that 2, 4, 6-tris (4-aminophenyl)-1, 3, 5-triazine, terephthalaldehyde and 2, 4, 6-tris (4-aminophenyl)-1, 3, 5-triazine are mixed according to a certain proportion, and the donor-receptor type two-dimensional imino CTF photocatalyst is obtained. The preparation method comprises the following steps: by taking 2, 5-dimethoxy terephthalaldehyde or 2, 5-dihydroxy terephthalaldehyde as a raw material, reacting in a mixed solution of mesitylene / dioxane / acetic acid in a certain proportion for 3 days by adopting an inert gas sealing-solvothermal method, centrifuging the obtained product, sequentially washing with tetrahydrofuran and acetone for multiple times, and carrying out vacuum drying, thereby obtaining the 2, 5-dimethoxy terephthalaldehyde / 2, 5-dihydroxy terephthalaldehyde. The two-dimensional triazine CTF photocatalysts with different donor-receptor types are obtained. The preparation method comprises the following steps: by taking acetonitrile as a solvent, dispersing a photocatalyst into an arylamine solution with a certain concentration, stirring for 0.5 hour in a dark place, and carrying out catalytic reaction under visible light (lambda is greater than or equal to 420 nm), so that the preparation of the high-efficiency catalytic arylamine oxidative coupling reaction under the visible light is realized.

The invention discloses a carboxymethyl beta-cyclodextrin modified D-A COF material and a preparation method and application thereof.Benzotrithiophene is used as an electron donor, triazine is used as an electron withdrawing unit, imine-connected D-A COFs are successfully synthesized through a solvothermal method, the imino COFs and carboxymethyl beta-cyclodextrin are treated through a Ugi multi-component reaction, and the COF material is prepared. And the COFBTT-TAPT photoactive material containing the beta-cyclodextrin group is obtained through preparation. COFBTT-TAPT-beta-CD and Mxene form a heterojunction to further enhance the photoelectric conversion efficiency of the photoactive material, and the photoactive material is used for preparing a photoelectrochemical sensor, so that high-sensitivity field screening of PFOS (perfluorooctane sulfonate) can be carried out in a low concentration range.

Hybrid organic-inorganic MXenes (h-MXenes) having amido, imido, alkoxy, or aryloxy surface terminating groups and methods for synthesizing the hybrid organic-inorganic MXenes are provided. The synthesis of h-MXenes having a broad scope of erminal organic functional groups is carried out via the displacement of halide atoms from halide-terminated MXenes by deprotonated primary organic amines or deprotonated alcohols.

The invention discloses a 3-imido-4, 5-diaryl boron oxygen heterocyclic ring onium salt derivative as well as a preparation method and application of the 3-imido-4, 5-diaryl boron oxygen heterocyclic ring onium salt derivative. The 3-imido-4, 5-diaryl boron oxygen heterocycle onium salt derivative is prepared by taking acetylenic ketone potassium fluoborate, organic amine and 2-(trimethylsilyl) phenyl trifluoromethanesulfonate as raw materials, inorganic alkali and a weak acid buffer as accelerators and water and acetonitrile as solvents through a one-pot two-step reaction, and the compound can be used for preparing organic fluorescent materials, such as organic fluorescent materials, organic fluorescent materials, organic fluorescent materials, organic fluorescent materials, organic fluorescent materials and organic fluorescent materials. The compound has obvious aggregation-induced emission (AIE) property, high quantum yield and wider fluorescence range. The target product is prepared with high atom economy reaction and high yield, and the method has the advantages of cheap and easily available raw materials, mild reaction conditions, short synthetic route, wide universal range of substrates and the like.

The invention relates to the technical field of chemical synthesis, and provides a 1H-pyrazole-5-alcohol copper complex as well as a synthesis method and application thereof. The molecular formula of the complex is Cu (L) 2, and L is a dehydrogenated anion ligand of 3-methyl-1-phenyl-4-(1-imido-2-phenethyl)-1H-pyrazole-5-alcoholic hydroxyl group. The synthesis method comprises the following steps: adding 3-methyl-1-phenyl-5-pyrazolone, copper acetate monohydrate and phenylacetonitrile into a hydrothermal container, sealing, carrying out constant-temperature reaction in a drying oven, cooling to room temperature, and volatilizing filtrate to obtain the green flaky Cu (L) 2 single crystal, the invention also provides a method for realizing the introduction of the 4-position imine group of the 5-pyrazolone by using the nitrile. The complex Cu (L) 2 provided by the invention has an excellent inhibition effect on three tested strains.

The application relates to the technical field of photoelectric functional materials, in particular to an interface modification layer material and a synthesis method and application thereof. The interface modification layer material provided by the application increases the steric hindrance of the molecule by introducing a functional group at the para-position of the benzene ring in the BPhen molecular structure, and reduces the aggregation and crystallization of the molecule; the molecular weight of the synthesized phenanthroline derivative is large, the glass transition temperature is higher than that of BPhen, and the thermal stability of the material is better; the synthesized phenanthroline derivative exists in the form of ionized quaternary ammonium salt, the reactivity of the imine group in the molecular structure is weaker than that of BPhen or BCP, and the stability of the device is improved; and the synthesis method of the interface modification layer material provided by the application is simple, the yield is high, the purification is easy, the price is low, and the interface modification layer material can be prepared on a large scale. The interface modification layer material can be applied in a semiconductor photoelectric device, and is used as an electrode modification layer to reduce the electrode work function.

The invention discloses an imine-based high-performance ultraviolet shielding photoresist and a preparation method thereof. The preparation method comprises the following steps: preparing an intermediate imino diphenol, and synthesizing an imino comonomer by using the intermediate imino diphenol; blending the imino comonomer with resin to obtain a photoresist precursor; and blending the photoresist precursor and an initiator to obtain the photoresist with excellent ultraviolet shielding capability and mechanical properties. According to the prepared imino comonomer containing the imino group and the urethane group, the urethane group provides a hydrogen bond site to increase compatibility, imine induces to form pi-pi accumulation, the formation of the hydrogen bond and the pi-pi accumulation enables the energy required by transition of a system from HOMO to LUMO to be reduced, and the ultraviolet shielding capability of a polymer is improved; the imine and benzene ring conjugated rigid skeleton enhances the strength of the polymer; the weak interaction between molecules increases the energy dissipation capability of the polymer, and the cured photoresist has excellent ultraviolet shielding performance and mechanical properties, and has very wide application prospects.

The present invention provides a preparation method of a phosphorus-containing compound modified imido epoxy resin, comprising the following steps: step 1: reacting phenolphthalein and p-aminophenol to obtain an imido-containing polyphenol compound; step 2: reacting the imido-containing polyphenol compound and epichlorohydrin to obtain an imido-containing multifunctional epoxy resin; step 3: reacting the imido-containing multifunctional epoxy resin with a phosphorus-containing compound to obtain a phosphorus-containing compound modified imido epoxy resin. Imide groups and epoxy groups are gradually introduced into the phosphorus-containing compound, and the generated phosphorus-containing compound modified imido epoxy resin contains more benzene rings and imide structures, thereby improving the heat resistance of the epoxy resin. The N element in the imide group and the P element in the phosphorus-containing compound utilize the N-P synergistic effect to enhance flame retardancy while reducing phosphorus content, thereby reducing the water absorption rate of the resin.

The application relates to an imine-based conjugated microporous polymer with high specific surface area and high conjugation degree and a preparation method and application thereof, three monomers of aryl bromide, arylamine and boric acid are selected, and the imine-based conjugated microporous polymer with high specific surface area and high conjugation degree is synthesized based on a one-pot two-reaction of Buchwald-Hartwig carbon-nitrogen coupling reaction and Suzuki-Miyaura carbon-carbon coupling reaction. In the alkaline condition, the ratio of the aryl bromide and arylamine monomers is kept unchanged, the boric acid monomer is introduced to carry out the Suzuki-Miyaura C-C coupling reaction, the specific surface area, active sites and conjugation degree can be effectively increased. The method is simple in operation, the conjugated microporous polymer with high specific surface area, high conjugation and high redox property has great application potential in energy storage electrode materials, supercapacitors and the like.

The invention provides an imino methyl phosphine reagent and application thereof in preparation of cyclopropylamine compounds, and belongs to the technical field of organic chemistry. A method for preparing a cyclopropylamine compound from the imino methyl phosphine reagent comprises the following steps: dissolving the phosphine reagent in an organic solvent, cooling to a certain temperature, adding alkali, stirring, adding an epoxy compound, heating to a certain temperature, reacting, carrying out acidolysis to obtain cyclopropylamine salt, and carrying out alkali neutralization to obtain free cyclopropylamine. According to the imino methylphosphine reagent and the application thereof in preparation of cyclopropylamine compounds, a target product is synthesized in one step from epoxy compounds, the defects that a traditional method is tedious in step, toxic reagents are used, the yield is low and the like are overcome, the synthesis efficiency and the yield are improved, the use of harmful reagents and organic solvents is reduced, and the cost is reduced. And primary free cyclopropylamine is easy to obtain and is convenient to subsequently convert into medicines and bioactive molecules.

The invention belongs to the technical field of high-performance polyolefin catalysis, and discloses an IVB metal complex containing imidazoline (alkyl)-2-imino, a catalyst system and a method for preparing a polymer from the IVB metal complex, the structural formula of the metal complex is shown in the specification, and in the formula, R1-R6 are the same or different substituent groups; the application comprises the following steps: preparing a catalyst system from the metal complex and the cocatalyst, and then carrying out polymerization reaction on ethylene and a large-volume olefin monomer in an inert solvent under the action of gas protection and the catalyst system, the ethylene / large-volume olefin monomer copolymer (or ethylene is subjected to a polymerization reaction in an inert solvent to obtain an ethylene homopolymer, or cycloolefin is subjected to a polymerization reaction in an inert solvent to obtain a cycloolefin homopolymer). The metal complex disclosed by the invention is excellent in temperature resistance, and shows excellent polymerization activity and relatively high insertion rate of a large-volume olefin monomer in a copolymerization reaction system.

The present application relates to a kind of chiral imide group covalent organic framework material and its preparation method, belong to covalent organic framework material technical field.The chiral imide group covalent organic framework material of the present application is with imide bond as connecting unit, with higher thermal stability and chemical stability, and the precise construction of framework chirality is realized by chiral induction strategy, to give material clear chiral characteristics, with important application potential in chiral recognition, chiral separation and asymmetric catalysis etc.;Its preparation is with R / S-tetrahydrofuran-2-methyl acid as chiral inducer, isoquinoline as catalyst, imidazole as reaction medium, and imide bond connecting type covalent organic framework material with crystallinity and significant chiral signal can be prepared by solvothermal reaction.

The invention relates to a solvent-free synthesis method of thiacloprid, which comprises the following steps: adding 2-cyano imido-1, 3-thiazolidine, 2-chloro-5-chloromethylpyridine and solid alkali into a homogenizer, and reacting while homogenizing under the condition of microwave heating to generate thiacloprid. According to the method, the limitation of chemical reaction in a solvent in the prior art is broken through, a homogenizer is initiatively adopted and matched with a microwave heating mode for reaction without a solvent, the yield and the purity of the product are greatly improved by matching with a purification process of reflux dissolution and cooling recrystallization, and due to the fact that the solvent is not adopted, the wastewater yield is low, and therefore the method is suitable for industrial production. The production cost of thiacloprid is greatly reduced, and the environmental protection pressure is reduced.

The invention discloses a three-dimensional network imino covalent organic framework material as well as a preparation method and application thereof, and belongs to the field of materials. A specific number of multi-aldehyde benzene series and multi-amino benzene series are subjected to a Schiff base reaction, in the preparation process, a mode of combining ultrasonic dispersion and mechanical oscillation is adopted to ensure that reactants are uniformly mixed, and efficient polymerization can be realized at room temperature in cooperation with the synergistic catalysis of acetic acid or cesium carbonate and aniline or benzaldehyde; reaction conditions are mild and easy to control, damage of high temperature and high pressure to a material structure is avoided, meanwhile, directional assembly of a covalent organic framework is promoted through a solvent in a specific proportion and solvent types, formed imine bonds are stably combined, functional groups in a molecular structure endow the material with good chemical activity, and the covalent organic framework material is prepared. The accurate reaction of the multi-aldehyde benzene series and the multi-amino benzene series successfully constructs a three-dimensional network spherical structure.

This invention provides an imide-based silane coupling agent, its preparation method, and modified glass fibers and composite materials prepared therefrom. The method for preparing the imide-based silane coupling agent involves using a mercapto-containing silane coupling agent and maleimide in a molar ratio of 1:0.5-1:1.5 as raw materials to obtain the imide-based silane coupling agent. This invention also provides the imide-based silane coupling agent prepared by the above method, a method for modifying glass fibers using this imide-based silane coupling agent, and the modified glass fibers and composite materials prepared therefrom. The mercapto-olefin click chemistry reaction used in this invention to prepare the imide-based silane coupling agent has mild conditions, is simple to operate, and has a high conversion rate, which can broaden the types and applications of silane coupling agents.

The application discloses a preparation method of an imidolide lithium salt, comprising the following steps: (1) dissolving a lithium salt precursor in an organic solvent; adding Li3N and stirring the reaction at a certain temperature; wherein the lithium salt precursor contains a sulfonyl group; (2) removing the solvent in the reaction solution and drying to obtain the imidolide lithium salt. The method for directly preparing the imidolide lithium salt by using lithium nitride has the highest atomic economic efficiency, a simplified production process and lower cost, and can promote better commercial development of the imidolide lithium salt.

The present invention discloses a preparation method of an iminopyridine COF fluorescent probe and its 2+ The detection application comprises the following steps: dispersing amino monomer (TA) and aldehyde monomer (PD) in an organic solvent, ultrasonically treating, using glacial acetic acid as a catalyst, repeatedly freezing and thawing, and then passing N2 for degassing, heating the container in a vacuum seal for reaction, cooling to room temperature after the reaction is complete, washing, and drying the product to obtain an iminopyridine COF (COF-TAPD) fluorescent probe. The COF-TAPD fluorescent probe of the present invention realizes the detection of Cu in water. 2+ The probe has excellent stability, anti-interference ability and low detection limit, with a LOD of 7.63nM. After five cycles of use, it still maintains more than 85% of the fluorescence response ability, and is effective in detecting heavy metal Cu in water. 2+ It has good practical application potential.

The invention relates to ion transport molecules, pharmaceutical compositions and uses. The ion transport molecule has a structure as shown in the following formula I, and x is equal to 1, 2, 3, 4 or 5; r1 and R2 are respectively and independently a crown ether group, an aza-crown ether group, a cyclodextrin group, a thiourea group, an amide ring group, a benzamide ring group, an aryl triazolyl group, a cholic acid group, a cholesteryl group, CH3CH2 (OCH2CH2) k-O-, hydrogen or an alkyl group, and k is equal to 0-10; and R3 and R4 are each independently a linking group, an alkylene group, an alkylene oxy group, an alkylene acyl group, an alkylene amino group, an alkylene triazole group, an alkynylene group, an imidoalkyl acyl group, a sulfinyl alkyl acyl group, a phosphonite alkyl acyl group, an arylene group, or a heteroarylene group. The ion transport molecule provided by the invention can be inserted into a phospholipid bilayer to inhibit the growth of cancer cells or inhibit the growth of bacteria, so that the effect of treating cancer or bacterial infection is achieved. # imgabs0 #

The invention relates to a D-A type imino conjugated microporous polymer catalyst for persulfate activation as well as a preparation method and application of the D-A type imino conjugated microporous polymer catalyst. The D-A type imino conjugated microporous polymer catalyst is prepared through a Buchwald-Harwig coupling reaction of a benzothiadiazole monomer and an arylamine monomer. The catalyst prepared by the invention has the characteristics of high-efficiency degradation performance on various organic pollutants, wide applicable pH range, confinement enhanced mass transfer and the like; according to the invention, the catalytic membrane with enhanced mass transfer can be further prepared.

The invention discloses application of an imidogen covalent organic framework in adsorption separation of 5-hydroxymethylfurfural, and belongs to the technical field of adsorption separation. The structural formula of the imidogen covalent organic framework is shown as a formula I or a formula II. The imidogen covalent organic framework is used as an adsorbent for adsorbing and separating 5-hydroxymethylfurfural, adsorption sites are provided for the 5-hydroxymethylfurfural through uniform pore channels, rich imidogen groups and high specific surface area of the imidogen covalent organic framework, and the imidogen covalent organic framework has extremely high selectivity on the 5-hydroxymethylfurfural; according to the present invention, the low-concentration 5-hydroxymethylfurfural can be efficiently separated from the mixed solution containing 5-hydroxymethylfurfural, levulinic acid, formic acid and glucose, and the high selectivity and the high stability can be maintained in the pH value range of 1-11;

The invention relates to the field of chemistry, and discloses a synthesis method of four novel imino phosphine ligand Cu (I) complexes and application of the complexes as catalysts in a hydrogen-silicon reduction reaction of ketone. The yield of most of the novel imino phosphine ligand Cu (I) complexes is not lower than 70%, the preparation process is simple, and the product is easy for single crystal culture; and under relatively mild reaction conditions, the catalyst shows certain catalytic activity for catalyzing hydrosilylation reaction of acetophenone. In addition, a copper-based catalyst and a hydride donor (PMHS) are adopted, so that the catalytic system is cleaner and more efficient, and the cost can be greatly saved.

The invention provides a compound monohydrate N-(isopropylimido) guanidine monofluorophosphate and monohydrate N-(isopropylimido) guanidine monofluorophosphate birefringent crystal as well as a preparation method and application thereof, the chemical formula of the compound is (C4N4H11) 2PO3F. H2O, the molecular weight is 346.32, and the compound is prepared by adopting a room temperature solution method; the chemical formula of the crystal is (C4N4H11) 2PO3F. H2O, the molecular weight is 346.32, the crystal belongs to a triclinic system, the space group is shown in the specification, the cell parameters are as follows: a = 7.3372 (6), b = 9.0541 (8), c = 12.6489 (10), alpha = 96.383 (3) degrees, beta = 96.496 (3) degrees, gamma = 97.670 (3) degrees, the unit cell volume is 820.59 (12) 3, and the birefringence is 0.165 at 546 nm. The crystal is grown by adopting a hydrothermal method or a room-temperature solution method, has good chemical stability, can be used for manufacturing polarizing prisms, phase delay devices and electro-optical modulators with various purposes, such as Glan prisms, polarization beam splitters, compensators, opto-isolator circulators, optical modulators and the like, and plays an important role in the fields of optics and communication.

The invention discloses a method for constructing an imino thiazole derivative by using alkali to promote nitrogen removal of 1, 2, 3-triazole, which comprises the following steps: reacting a 1, 4-disubstituted-1, 2, 3-triazole derivative and isothiocyanate as raw materials in the presence of alkali and a solvent at 10-120 DEG C, and performing extraction, concentration and column chromatography separation and purification on the reaction product to obtain the imino thiazole derivative. According to the method, raw materials are easy to obtain, transition metal does not need to participate, operation is easy and convenient, and a convenient and efficient new method can be provided for synthesis of thiazole drugs, pesticides and organic materials.

The present application relates to a kind of D-A type imine group conjugated microporous polymer catalyst activated with persulfate and its preparation method and application, the catalyst is prepared by Buchwald-Hartwig coupling reaction of benzothiadiazole monomer and aromatic amine monomer.The catalyst prepared in the present application has high efficient degradation performance to various organic pollutants, wide applicable pH range and confined enhanced mass transfer etc.Characteristics;The catalytic membrane with mass transfer enhancement can be further prepared by the present application.

The invention provides an electrolyte, a battery containing the electrolyte, an energy storage device and electric equipment, the electrolyte comprises an electrolyte additive, the electrolyte additive comprises at least one of a compound shown in a formula (I) and a compound shown in a formula (II), and in the formula (I), the compound shown in the formula (I) is a compound shown in the formula (II). R1 and R2 are respectively and independently selected from substituted or unsubstituted methylene and substituted or unsubstituted imino, and R3 is selected from substituted or unsubstituted methylene; in the formula (II), R4, R5 and R6 are respectively and independently selected from substituted or unsubstituted methylene and substituted or unsubstituted imino, and R7 is selected from substituted or unsubstituted methine. # imgabs0 #

The invention relates to a preparation method and an application of a 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound. The invention belongs to the technical field of fine chemical synthesis. The invention aims to solve the technical problems that the existing method for preparing the 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound is harsh in reaction condition, high in cost, limited in product derivatization route and the like. The method comprises the following steps: by taking N-acyl diazene as a substrate, reacting the N-acyl diazene with trimethylsilyl cyanide under the action of alkali or a phosphine reagent to prepare the 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound. According to the method disclosed by the invention, the 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound is prepared in one step under the condition of room temperature. According to the preparation method of the 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound, the reaction process is greatly accelerated through selection of alkali and phosphine reagents and synergistic reasonable control of the ratio of various substances, efficient preparation of the 2-imido-3, 5-disubstituted-1, 3, 4-oxadiazole compound is achieved, the substrate is good in applicability, the ring is provided with an imine structure, and the application prospect is wider; the method can be widely applied to synthesis in the fields of medicines in academic circles and the like.

The invention discloses a preparation method and application of an N, O-type nickel olefin polymerization catalyst based on alpha-imine indolone. The invention provides a novel N, O-type nickel olefin polymerization catalyst based on alpha-imine indolone, and the novel N, O-type nickel olefin polymerization catalyst, an alpha-imine group-Ar near a metal center and indole N-R at a far end form a steric hindrance effect together to adjust the polymerization performance of the nickel catalyst. A nickel complex of the nickel catalyst can initiate homogeneous polymerization of olefin such as ethylene in a single component mode, a metal active center is effectively protected through a large-steric-hindrance group, the thermal stability of the nickel catalyst and the activity of catalyzing ethylene are greatly improved, and a low-branched polyolefin material with excellent mechanical and elastic properties is prepared. The molecular weight, branched chain density, melting point and other parameters of the obtained polyethylene material are all adjustable. The N, O-type innovative catalyst opens up a brand new path for the development of a polyolefin catalyst family, and provides a precious choice.