71 results about "Pyrylium salt" patented technology

The invention discloses a negative ion antibacterial polyester fiber composite fabric and a production process thereof.The composite fabric comprises modified base cloth, a reinforced antibacterial layer and a protective layer, the composite fabric is of a multi-layer antibacterial structure, the modified base cloth contains tourmaline powder, the tourmaline powder contains a large number of negative ions, and the protective layer is made of polyester fibers. The negative ions can change cell wall structures and cell membrane functions of bacteria, further destroy life activities of microorganisms, and combine with biomolecules such as proteins, nucleic acids and enzymes in the bacteria to denature, solidify or inactivate the biomolecules, thereby causing death of the bacteria. A terpyridyl structure on the surface of the modified base cloth and a terpyridyl structure in the modified ligand are matched with neodymium trichloride hexahydrate, and a rare earth complex of pyridine neodymium is formed on the surface of the modified base cloth and is matched with benzimidazolyl pyridinium on the surface, so that the antibacterial efficiency is greatly improved.

The invention provides 6-site polysubstituted aminoethoxy phenyl pyridinium salt-gamma-cyclodextrin with a structure as shown in a formula (I). The preparation method of the 6-site poly-substituted aminoethoxy phenyl pyridinium salt-gamma-cyclodextrin is simple and convenient, and the prepared 6-site poly-substituted aminoethoxy phenyl pyridinium salt-gamma-cyclodextrin has good biocompatibility, and can be used for preparing the 6-site poly-substituted aminoethoxy phenyl pyridinium salt-gamma-cyclodextrin. In in-vitro pig plasma experiments and in-vivo mouse experiments, the 6-site polysubstituted aminoethoxy phenyl pyridinium-gamma-cyclodextrin can well neutralize heparin and shows neutralizing activity better than that of protamine, and the cyclodextrin derivative has wide application prospects in the fields of biology and medicine.

Provided is a cosmetic containing ascorbic acid and / or a salt thereof, which has excellent stability and reduced irritation to the skin. The cosmetic according to the present invention contains ascorbic acid and / or a salt thereof, ultrapure water, and an antioxidant, and the salt of ascorbic acid is at least one selected from the group consisting of a trimethylamine salt, a triethylamine salt, a monoethanolamine salt, a triethanolamine salt, a pyridinium salt, an arginine salt, an ammonium salt, a sodium salt, a potassium salt, a calcium salt, a magnesium salt, and an aluminum salt of ascorbic acid. The antioxidant is glutathione or sodium pyrosulfite, the pH of the cosmetic material is adjusted to 5.0-7.0, and the dissolved oxygen content of the cosmetic material is 0-5 mg / L.

The invention provides a preparation method of trifluoromethanesulfonic acid ionic liquid. According to the preparation method, trifluoromethanesulfonic acid, pyrrole salt, pyridinium salt, pyrazine salt and the like are subjected to substitution reaction, static layering, organic phase water washing and organic phase drying to achieve the purpose of generating the trifluoromethanesulfonic acid ionic liquid. The prepared trifluoromethanesulfonic acid ionic liquid is high in purity, good in yield and suitable for large-scale industrial application. The method provided by the invention is green and environment-friendly, and does not use harsh reaction conditions and organic solutions; meanwhile, the cost is low, the yield is high, and the purity of a crude product can reach 99.95% or above after the crude product is purified; and the method has the advantages of less required equipment, small occupied area and low investment, and can realize industrial production.

The present application relates to the field of macromolecular compounds connected to the polymer of styrene or alkyl-substituted styrene, in particular to a LED-sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridine salt and its manufacturing method and application. The LED-sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridine salt is characterized in that: a styryl group is connected to a pyridine ring to form a diaryl ethylene structure, and a ketoxime ester is connected to the para position of the double bond on the benzene ring. The manufacturing method of the LED-sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridine salt is characterized in that: the reaction is carried out according to the reaction formula (a), (b), (c) and (d) in sequence. The present application has good light absorption performance and good matching with LED light source.

The invention relates to a pyridinium-based hypochlorite detection probe and a preparation method thereof. The structure of the fluorescent probe is as shown in a formula I. The fluorescent molecular probe is prepared by taking o-alkynyl aldehyde as a raw material and carrying out condensation reaction on the o-alkynyl aldehyde and pyridinium salt. The probe synthesis method is simple, the reaction condition is mild, and the yield of the target compound is high. The fluorescent molecular probe is stable in optical performance, high in hypochlorite detection sensitivity and low in lower detection limit, the detection limit is 0.38 mu M, and the response range is 5-200 mu M. The selectivity is good, and no response is caused to fluorine ions, iodide ions, perchlorate ions, hydrogen sulfate ions, sulfate ions, acetate ions, thiocyanate ions, sulfur ions and the like. The fluorescent molecular probe provided by the invention has practical application value in the fields of biochemistry and environmental chemistry, especially detection of hypochlorite ions in water and the like. # imgabs0 #

The invention provides a method for degrading a retired wind power blade material by using a composite solvent, and belongs to the technical field of solid waste recycling. The method comprises the following steps: physically crushing the retired wind power blade to obtain a sample; mixing the sample with an organic solvent and an ionic liquid for reaction; the ionic liquid is imidazole salt ionic liquid or pyridine salt ionic liquid. According to the method disclosed by the invention, the retired wind power blade material is degraded by adopting the ionic liquid-organic solvent, so that oligomer or micromolecular monomer substances which are easy to separate are generated, and different components are effectively separated. After the reaction is finished, a glass fiber, balsa wood and rigid foam mixed material can be recovered and obtained, the mixed material can be used as a filler, a thermosetting resin degradation product can be converted into a useful chemical product and has high utilization value, and a catalyst is easy to recycle and reuse.

The invention belongs to the technical field of organic synthesis, and relates to an electron donor-double receptor type fluorescent compound as well as a preparation method and application thereof, the electron donor-double receptor type fluorescent compound has the following structural formula: # imgabs0 #, R1 is at least one of the following functional groups: # imgabs1 # R2 is H,-CH3,-COOCH2CH3,-COOCH3 or-NO2; x1 is a halogen ion; the preparation method comprises the following steps: # imgabs2: mixing a compound as shown in a formula 2, a compound as shown in a formula 3 and organic alkali, and carrying out a Knoevenagel reaction to obtain the electron donor-double receptor type fluorescent compound. Compared with the prior art, the photosensitizer structure disclosed by the invention can efficiently generate active oxygen and shows an efficient photodynamic killing effect on methicillin-resistant staphylococcus aureus and escherichia coli. Due to the characteristics, the donor-double acceptor pyridinium salt derivative has important application value in the development of novel antibacterial materials.

The application provides a static spinning solution containing pyridinium propane sulfonate, a preparation method thereof and a static spinning method thereof. The static spinning solution comprises an additive pyridinium propane sulfonate, PAN polyacrylonitrile and DMF. Experiments prove that the static spinning solution has low cost, can improve the entanglement degree between molecular chains, inhibits the breakage of a solution jet in a static spinning process, and the micro-morphology is improved.

The invention relates to the technical field of biomedical detection and functional organic fluorescent materials, in particular to synthesis and application of a single-molecule probe combining BODIPY (boron dipyrromethene) and a semi-cyano dye. Comprising the following steps: preparing an intermediate 1: reacting 4-hydroxybenzaldehyde with 2, 4-dimethyl pyrrole to generate BDP-OMe, and then reacting with pyridinium chlorochromate to obtain the intermediate 1; preparation of an intermediate 2: carrying out reflux reaction on 2, 3, 3-trimethyl-3H-indole and 2-bromoethanol in ethanol to obtain the intermediate 2; and synthesizing a final product: heating the intermediate 1 and the intermediate 2 in toluene to react, and performing post-treatment and column chromatography purification to obtain the probe CyB-C. The bimodal detection capability enables the probe to simultaneously distinguish the microenvironment difference between normal cells and cancer cells and monitor diseases related to viscosity abnormity.

The invention discloses a chitosan bipyridine group acid-resistant adsorbent as well as a preparation method and application thereof, and belongs to the technical field of electroplating sludge treatment. According to the invention, chitosan is selected as a matrix, and grafting of amido and pyridyl is carried out on the basis of the matrix, so that the adsorbent containing amido and pyridyl is prepared, and the problems that hydroxyl and amido on a chitosan body are protonated in an acid solution, so that the ability of chelating metal cations is poor, and the adsorption effect is poor are solved. The heavy metal in the acid solution cannot be effectively separated. In addition, amido and a reagent 2-chloromethylpyridine hydrochloric acid (2-CPD) with lower price are used for substitution reaction, and compared with existing M4195 commercial resin, the production cost is reduced, and the preparation method is suitable for large-scale popularization and application.

The present application relates to a kind of hypochlorite detection probe based on pyridine salt and preparation method thereof.The fluorescence probe structure is as shown in formula I.The fluorescent molecular probe of the present application is prepared from o-alkynyl aldehyde as raw material, by condensation reaction with pyridine salt.The probe synthesis method is simple, and the reaction condition is mild, and the yield of target compound is high.The fluorescent molecular probe described in the present application has stable optical performance, high sensitivity for hypochlorite detection, low detection lower limit, detection limit is 0.38 μM, response range is 5-200 μM.It has good selectivity, and has no response to fluoride ion, iodine ion, perchlorate ion, bisulfate ion, sulfate ion, acetate ion, thiocyanate ion, sulfur ion, etc.The fluorescent molecular probe described in the present application has practical application value in the field of biochemistry and environmental chemistry, especially the detection of hypochlorite ion in water, etc.

A compound represented by a formula (I) or a formula (II):(in the formulas (I) and (II), A represents an oxygen atom or a sulfur atom, X1 represents a halogeno group or the like, m represents the number of X1 groups and is any integer of 0 to 5, Z represents a group represented by a formula (Z-1) or a formula (Z-2), a bond marked with a symbol * means a bond with a carbonyl group or a thiocarbonyl group in a pyridinium salt, Y represents a substituted or unsubstituted C2-6 alkenylene group, Q represents a naphthalene ring or a 6- to 10-membered heteroaryl ring, X2 represents a substituted or unsubstituted C1-6 alkyl group or the like, X3 represents a halogeno group or the like, n represents the number of X3 groups and is any integer of 0 to 4, Zq− represents a counter ion, and q represents a valence of the counter ion and is 1 or 2.)

The invention discloses a pyridyl-based water-soluble dual-response fluorescent probe as well as a preparation method and application thereof, and relates to the technical field of fluorescent probes. The technical scheme is as follows: the pyridyl-based water-soluble dual-response fluorescent probe has the following structure: # imgabs0 #. According to the invention, acetyl is used as a recognition site of carboxylesterase, terminal benzyl pinacol ester is used as a reaction site of hypochlorite, and the fluorescent probe capable of simultaneously responding to on-off and ratio of hypochlorite and carboxylesterase is prepared; in addition, pyridinium provides an effective mitochondrial targeting site, so that the probe can detect mitochondrial hypochlorite and carboxylesterase in living cells.

The invention discloses a method for preparing p-(1-ethoxyethoxy) styrene, and belongs to the technical field of organic compound preparation. The method comprises the following steps: reacting p-hydroxystyrene with vinyl ethyl ether in an organic solvent under the catalysis of a catalyst to generate p-(1-ethoxyethoxy) styrene; the catalyst is a composite catalyst containing a sulfonic acid pyridine salt catalyst and a phase transfer catalyst. Compared with the prior art, the method has the advantages that the compound catalyst containing the faintly acid pyridine sulfonate catalyst and the phase transfer catalyst is used for replacing the pyridine sulfonate catalyst in the prior art, so that lower reaction cost, shorter reaction time, higher yield and higher purity can be realized.

The present invention discloses a pyridine-based water-soluble dual-response fluorescent probe and a preparation method and application thereof, and relates to the technical field of fluorescent probes. The technical scheme is as follows: the pyridine-based water-soluble dual-response fluorescent probe has the following structure:. The present invention uses acetyl as the recognition site of carboxylesterase and terminal benzyl pinacol ester as the reaction site of hypochlorite to prepare an on-off and ratio fluorescent probe that can simultaneously respond to hypochlorite and carboxylesterase; in addition, the pyridinium salt provides an effective mitochondrial targeting site, which enables the probe to detect mitochondrial hypochlorite and carboxylesterase in living cells.

The invention discloses a fireproof flame-retardant fiber and a preparation method thereof, and relates to the technical field of fibers. When the fireproof and flame-retardant fiber is prepared, luteolin and 3-chloro-1-propylene are subjected to a reaction, and modified luteolin is prepared; the modified luteolin and zinc acetate are subjected to a reaction, and a luteolin complex is prepared; the preparation method comprises the following steps: reacting pyridinium salt dimethyl pimelate, dimethyl terephthalate, 1, 6-hexanediol and dihydroxy DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) to obtain copolyester; acrylic acid is polymerized and coated on the surface of magnesium hydroxide to prepare modified magnesium hydroxide; and uniformly mixing the modified magnesium hydroxide, a luteolin complex and copolyester, carrying out melt spinning, and treating with azodiisobutyronitrile to obtain the fireproof flame-retardant fiber. The fireproof flame-retardant fiber prepared by the invention has excellent flame retardance, antibacterial property and mechanical strength.

The present invention discloses a temperature-responsive two-photon MOF-based fluorescent probe, its preparation method, and application, relating to the field of fluorescent probe technology. MOF-199 is used as a nanocarrier, simultaneously loaded with a photothermal agent, gold nanorods (Au NRs), and a temperature-responsive pyridinium salt molecule (B). MOF-199 can degrade in the acidic tumor microenvironment, and the released copper ions react with overexpressed H2O2 through a Fenton-like reaction to generate ·OH, inducing tumor cell apoptosis and achieving chemodynamic therapy. Au NRs, with high photothermal conversion efficiency, can achieve photothermal therapy under near-infrared light irradiation, and local hyperthermia can further accelerate ·OH generation, thereby accelerating the chemodynamic therapy process. B, with its two-photon response characteristics, can achieve real-time temperature monitoring under near-infrared light irradiation, and the coated phase change material film can effectively prevent B leakage, achieving temperature-controlled release.

The invention provides a high-voltage quick charge binder and a preparation method thereof, positive electrode slurry, a positive electrode plate and a battery, and relates to the field of binders. The high-voltage quick charge binder comprises poly (4-cyano-2-butenoic acid N-cyano-2-trifluoropropyl pyridinium salt), and a binding agent, the structural formula of the poly (4-cyano-2-butenoic acid N-cyano-2-trifluoropropyl pyridinium salt) is shown in the specification. The high-voltage quick charge binder can effectively improve the voltage window of the binder, so that the stability of a high-voltage positive electrode system is improved.

The present invention discloses a method for preparing an organic ketone compound by synergistic catalysis of light and metal. The method realizes the reaction of keto acid and pyridinium tetrafluoroborate to generate an organic ketone compound under the synergistic catalytic conditions of a photocatalyst and a metal catalyst. The keto acid is oxidized to generate an acyl radical by a photocatalyst, and then the pyridinium tetrafluoroborate is reduced by a reduced photocatalyst to generate a carbon radical. Finally, the metal catalyst captures the generated acyl radical and carbon radical, and the metal catalyst further eliminates the product of the generated ketone compound by reduction. The present invention utilizes cheap and readily available keto acid and pyridinium salt as raw materials, and uses them in the synergistic action of metal and photocatalysis to prepare organic ketone compounds with potential biological activity in synthetic applications, and has the value of developing functional ketone compounds that can be used for industrial synthesis.

The application provides a monovalent ionic liquid fiber membrane, a preparation method and application in recovery of palladium, and belongs to the technical field of adsorbing materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate and ionic liquid in the first solution to obtain a second solution; the ionic liquid is any one of an alkenyl imidazole salt, a quaternary ammonium salt containing an alkenyl group, a quaternary phosphonium salt containing an alkenyl group, a pyridine salt containing an alkenyl group or a morpholine salt containing an alkenyl group; N,N'-methylene bisacrylamide and benzoyl peroxide are added into the second solution, heated, stirred and warmed to obtain a third solution, and the third solution is subjected to high-pressure electrospinning to obtain the monovalent ionic liquid fiber membrane; or the second solution is subjected to high-pressure electrospinning and then irradiation to obtain the monovalent ionic liquid fiber membrane. The monovalent ionic liquid fiber membrane prepared by the application can realize rapid adsorption and easy regeneration and desorption, and can efficiently and selectively adsorb and recover palladium from a complex acidic solution.

The application provides a light conversion agent, a preparation method and application thereof, and a light conversion film, and belongs to the technical field of chemical synthesis. The light conversion agent is an organic salt ion-rare earth Eu (III) anion type, is an ion pair type light conversion agent, has absorption of organic and inorganic complexes, has stronger ultraviolet absorption capacity, and is synthesized by introducing an electron-donating group N,N-dimethyl into a para position of a pyridine nitrogen and introducing a bromohexyl group to form a corresponding electron-withdrawing pyridine group to synthesize a pyridine salt, and is synthesized by taking 2-thiophene formyl trifluoroacetylacetone as a ligand to synthesize a rare earth anion complex Eu (HTTA) 4 ‑ By ion exchange, bromine ions in the pyridine salt are replaced by the complex anions, and by electrostatic interaction between the pyridine cation and the anion complex, sensitization of rare earth luminescence is realized, and the ultraviolet absorption capacity is improved. Moreover, the light conversion agent has a long alkyl flexible chain, can be better blended with LLDPE, and enhances the stability and dispersibility of the light conversion agent in resin.

The invention relates to an epsilon-alkyl alpha, beta-gamma, delta-diunsaturated ester compound, and belongs to the field of organic synthesis, the epsilon-alkyl alpha, beta-gamma, delta-diunsaturated ester compound has the following structural general formula: the compound structurally has multiple reaction sites, and has wide application in multiple fields due to reaction activity and structural diversity; a series of epsilon-alkyl alpha, beta-gamma, delta-diunsaturated ester compounds can be prepared by taking gamma-functionalized olefine aldehyde and pyridinium salt as starting raw materials under the synergistic catalysis of light and carbene, and a target compound can be subjected to certain chemical conversion; the compound can be used for synthesizing complex natural products, drug intermediates and the like as a dienophile in the fields of organic synthesis and fine chemical engineering. Besides, the substance also has wide application prospects in the aspects of polymer science and materials, and can be used as a comonomer to be used in the fields of coatings, adhesives, hydrogels and the like.

The alkyl pyridine salt compound disclosed by the invention has good nematicidal activity on Bursaphelenchus xylophilus and Meloidogyne incongnita, and the alkyl pyridine salt compound has the value of being further researched and developed into a nematicidal agent, and can be used for preparing the nematicidal agent. Compound with structural formula as follows: # imgabs0 #

The invention discloses a preparation method of a deuterated pyridinium salt participated photo-induced bicyclo [1.1. 1] pentane derivative, which comprises the following steps: putting a compound shown in a formula 1 and a compound shown in a formula 2 into an organic solvent, and carrying out illumination reaction on the compound shown in the formula 1 and the compound shown in the formula 2 and a bicyclo [1.1. 1] pentane compound shown in a formula 3 in an alkaline environment to obtain the deuterated pyridinium salt fragment-containing bicyclo [1.1. 1] pentane derivative shown in a formula 4, the reaction process is as follows: a substituent R1 is selected from an ester group or substituted amide, a substituent R2 is selected from phenyl or substituted phenyl, and the substituent of the substituted phenyl is methyl, methoxyl, cyano, an ester group, phenyl, halogen, tertiary butyl, phenoxyl, trifluoromethoxyl or trifluoromethyl. The method has the advantages of mild reaction conditions, no need of a catalyst, complete reaction at room temperature, economy, practicability, environmental friendliness and no generation of harmful substances; the efficiency is high after reaction amplification.

The invention relates to the field of high-molecular compounds connected to polymers of styrene or alkyl-substituted styrene, in particular to an LED-sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridinium as well as a preparation method and application of the LED-sensitive ketoxime ester type water-soluble photoinitiator. An LED sensitive ketoxime ester type water-soluble photoinitiator based on styryl pyridinium is characterized in that a styrene group is connected with a pyridine ring to form a diarylethene structure, and ketoxime ester is connected to the para-position of a double bond on a benzene ring. The invention relates to a preparation method of an LED-sensitive styryl pyridinium-based ketoxime ester type water-soluble photoinitiator. The preparation method is characterized by being implemented in sequence according to reaction equations (a), (b), (c) and (d). The light absorption performance is good, and the matching performance with an LED light source is good.

This patent application discloses a benzophenone-modified triphenylamine pyridinium salt organic photosensitizer, its preparation method, and its application. This photosensitizer is a triphenylamine-based compound, specifically synthesized into four compounds: CHO-TPAP-BP, CHO-pTPAP-BP, CHO-eTPAP-BP, and 2CN-eTPAP-BP. This organic photosensitizer combines the strong electron-withdrawing ability of pyridinium salts with the electron-donating properties of triphenylamine, resulting in greater separation of the HOMO-LUMO orbitals in the molecule. This is beneficial for reducing ΔE. ST Secondly, by utilizing the strong intersystem crossing ability of benzophenone, orbital spin coupling (SOC) can be enhanced, thereby increasing the efficiency of reactive oxygen species production and thus improving the photodynamic therapy effect; furthermore, it is hoped that anthracene and singlet oxygen ( 1 The characteristics of O2 reaction to generate internal peroxides and controllable release of oxygen under thermal conditions alleviate hypoxia during photodynamic therapy; at the same time, the multi-rotor structure and the multiple rotations and vibrations of bonds in the molecules are conducive to the construction of a photothermal conversion platform, thereby realizing multimodal synergistic therapy of tumors.

The invention provides a method for preparing 1, 2-disubstituted 1, 2-dihydro-3H-pyrazol-3-ketone, which comprises the following steps: by taking 1, 2-disubstituted pyrazol-3-ketone as an initial raw material, 1, 2-dichloroethane as a reaction solvent and pyridinium chlorochromate as an oxidizing agent, carrying out dehydroaromatization reaction on the 1, 2-disubstituted pyrazol-3-ketone to obtain the 1, 2-disubstituted 1, 2-dihydro-3H-pyrazol-3-ketone, and reacting the 1, 2-disubstituted 1, 2-dihydro-3H-pyrazol-3-ketone with 1, 2-dichloroethane to obtain the 1, 2-disubstituted 1, 2-dihydro-3H-pyrazol-3-ketone. The synthesis method comprises the following steps: preparing 1, 2-dihydro-3H-pyrazole-3-ketone. According to the present invention, the 1, 2-disubstituted 1, 2-dihydro-3H-pyrazole-3-ketone can be prepared, the reaction conditions are mild, the process is simple, the yield of the product 1, 2-disubstituted 1, 2-dihydro-3H-pyrazole-3-ketone is high, and the method is suitable for industrial production.

Chemical compounds that include a pyridinium-based compound functionalized by including a sulfur-containing substituent are provided. Also provided are materials and formulations including such pyridinium-based compounds. Also provided are corrosion-resistant substrates and films including such pyridinium-based compounds. Also provided are processes for inhibiting corrosion of a metallic surface using the formulations and processes of acidizing a subsurface formation using the pyridinium-based compounds.

A process for inhibiting microbial growth comprising administering a formulation comprising a pyridinium chloride compound of Formula (I), described herein, wherein R1-R6, independently comprise hydrogen, substituted or unsubstituted C1 to C24 alkyl, substituted or unsubstituted alkylaryl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, sulfonate, aryl sulfonate, C1 to C24 alkyl sulfonate, taurine, carboxylate, amine, alkylamine, arylamine, alkylammonium, arylammonium, sulfonamide, halogen, hydroxy, amide, nitro, cyano, azide, O-alkyl, S-alkyl, silyl, trialkylsilyl, O-silyl, haloalkyl, alkylsulfhydryl, trifluoromethyl, hydrazide, substituted or unsubstituted aryl, heteroaryl, or heterocyclic alkynyl, carboxyalkyl, aminoalkyl, haloalkyl, azidoalkyl, amide, amino acid, or peptide; and X and Y independently comprise a heteroatom selected from oxygen, nitrogen, or sulfur, or a heterocarbyl comprising one or heteroatoms selected from oxygen, nitrogen, or sulfur.