316 results about "Pyridinium" patented technology

The disclosure aims to provide a method for producing a refined polytetrafluoroethylene powder, in which a short-chain fluorine compound is reduced from low-molecular-weight polytetrafluoroethylene. The disclosure relates to a method for producing a refined polytetrafluoroethylene powder, including a step of reducing a short-chain fluorine compound from a low-molecular weight polytetrafluoroethylene powder obtained by radical polymerization. The step includes at least reducing a compound represented by the following formula (1) to 179 ppb or less and a compound represented by the following formula (2) to 6900 ppb or less:         Formula (1):     (H-(CF2)m-COO)pM1 wherein m is 3 to 20; M1 is H, a metal atom, NR54 (where R5s are optionally the same as or different from each other and each represent H or a C1-C10 organic group), imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; and p is 1 or 2, and         Formula (2) :     (H-(CF2)n-SO3)qM2 wherein n is 4 to 21; M2 is H, a metal atom, NR54 (where R5 is as defined above), imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; and q is 1 or 2.

The present invention provides a method for preparing an amphoteric ion-modified PVDF polymer electrolyte, belonging to the technical field of lithium metal batteries. Specifically, PVDF particles, a lithium salt, pyridinium propane sulfonate and a polar organic solvent are mixed and stirred to obtain a uniform viscous solution, which is coated on the surface of a substrate and dried under vacuum to obtain an amphoteric ion-modified PVDF polymer electrolyte. Among them, the concentrations of PVDF particles, lithium salt and pyridinium propane sulfonate in the uniform viscous solution are 80-120 g / L, 10-120 g / L and 5-60 g / L respectively. The present invention uses pyridinium propane sulfonate as an additive for the PVDF electrolyte. While promoting ion transport, it takes into account the stability of PVDF and the lithium negative electrode, inhibits the side reactions of dehydrogenation and defluorination, and improves the stability of the lithium negative electrode and the performance and cycle stability of the polymer electrolyte-based lithium metal battery.

The invention relates to the technical field of electro-coppering additives, and particularly discloses a PCB electro-coppering additive and a preparation method and application thereof.The PCB electro-coppering additive comprises an accelerator, an inhibitor and a leveling agent, the accelerator is sodium 3, 3 '-dithiodipropane sulfonate, the inhibitor is polyethylene glycol-6000, and the leveling agent is sodium dodecyl benzene sulfonate. The leveling agent is at least one organic matter with a chemical formula containing a pyridinium salt structure, the proportion of the accelerator is 1-10 ppm, the proportion of the inhibitor is 150-300 ppm, and the proportion of the leveling agent is 1-10 ppm; according to the method, the activation energy of electroplating reaction can be remarkably reduced and the reduction deposition of copper ions can be promoted by adding the accelerator (sodium polydithiodipropane sulfonate), so that the electroplating speed is increased, the electroplating period is shortened, the production efficiency is improved, the inhibitor (polyethylene glycol-6000) is adsorbed on the surface of the electrode to inhibit excessive deposition of copper in a specific area, and the production efficiency is improved. And a leveling agent (an organic matter containing a pyridinium salt structure) can further level the surface of the plating layer, so that the plating layer is smoother and finer, and the appearance quality and the mechanical property of the plating layer are improved.

The invention discloses a preparation method and application of an oil-soluble heteropolyacid ionic liquid catalyst. The catalyst is composed of organic cations and inorganic anions, the cations are one of quaternary ammonium, imidazole and pyridine cations containing long-chain alkyl, the anions are heteropolyacid anions, the long-chain alkyl enables the catalyst to have good oil solubility, the catalyst can be efficiently dispersed in the waste grease, heteropolyacid provides active sites, and the catalyst can be used for treating the waste grease. Nano-scale active particles are formed after in-situ vulcanization, and the catalytic hydrogenation effect is achieved. The invention also provides a preparation method of the oil-soluble heteropolyacid ionic liquid catalyst, the catalyst can be prepared from tertiary amine and halogenated hydrocarbon through three-step reaction of alkylation, anion exchange and acid-base neutralization, the preparation process is simple, a highly toxic reagent is avoided, and the cost is low. The catalyst provided by the invention can be used for catalytic hydroisomerization of various waste oils and fats, has the characteristics of high conversion rate, low coking rate and high product calorific value, and has relatively high industrial application potential.

The invention discloses an additive, an electrolyte and a battery. The additive is pyridinium propane sulfonate. The additive provided by the invention can regulate and control the physicochemical properties of the electrolyte. At the interface of the zinc negative electrode and the electrolyte, polar functional groups pyridine and sulfonate ions are adsorbed on the surface of the negative electrode of the battery, so that on one hand, water molecules in the electrolyte can be prevented from being contacted with the zinc electrode, thereby inhibiting hydrogen evolution corrosion and passivation reaction caused by water decomposition; and on the other hand, the diffusion mode of zinc ions on the surface of the electrode can be regulated and controlled, and regular and compact electro-deposition of the zinc ions is induced, so that formation and growth of zinc dendrites are prevented at a relatively large probability. Meanwhile, sulfonate ions can be complexed with zinc ions, water molecules in solvation sheaths are eliminated, and the degree of side reaction is weakened. In conclusion, after the additive is used, the performance of the battery is remarkably improved.

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 relates to a chiral pyridinium salt carbonyl catalyst as well as a preparation method and application thereof, the structural general formula of the catalyst is # imgabs0 #, in the formula, R1 is # imgabs1 #, X1-6 comprises N or C-R6-11; r2, R4 and R6-11 comprise hydrogen, alkyl of C1-24, alkyloxy, # imgabs2 # CO2Rd, halogen, nitryl, cyano or trifluoromethyl; r3 comprises substituted or unsubstituted C1-24 alkyl groups, substituent groups comprise halogen, C1-10 alkyl groups, C3-10 cycloalkyl or aryl groups, C1-8 carbonyl groups, C1-8 sulfonyl or phosphoryl groups, and C1-10 alkoxy or amido groups, and carbonyl groups comprise aldehyde groups, ketone carbonyl groups, ester carbonyl groups, carboxyl groups or amido groups; and R5 has the structural formula of # imgabs3 # X <-> which is an anion. Compared with the prior art, the catalyst disclosed by the invention is used for a bionic aldol reaction of amino acid derivatives to synthesize a series of beta-hydroxyl-alpha-amino acid compounds with extremely high enantioselectivity.

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.

The invention relates to a hydrogen peroxide probe and a preparation method and application thereof, the hydrogen peroxide probe connects pyridinium to a difluoro boron indole electron acceptor, can induce fluorescence quenching by distorting intramolecular charge transfer, generates weak fluorescence when the concentration of hydrogen peroxide in mitochondria is low, and can detect the mitochondria. According to the present invention, the hydrogen peroxide probe is used for detecting the hydrogen peroxide concentration in the mitochondria, the continuous fluorescence response is generated when the hydrogen peroxide concentration in the mitochondria is increased, the qualitative and quantitative analysis of the hydrogen peroxide level in the mitochondria is achieved, and the hydrogen peroxide probe can target the increased lipid droplet migration after the oxidative stress is caused by the increase of the hydrogen peroxide concentration so as to well detect the oxidative stress process; the method has important significance for exploring related damage of cell oxidative stress.

This disclosure provides redox cyclable molecules for energy storage. These molecules belong to either the 4H-pyran-4-ylidene family or include a six-membered aromatic ring with one nitrogen atom at position 1 (pyridinium family) or two nitrogen atoms at positions 1 and 4 (pyrazinium family) or at positions 1 and 3 (pyrimidinium family). Molecules in these families are used as analytes in redox flow batteries.

The invention discloses a pyridine quaternized cellulose derivative and a preparation method thereof, and belongs to the field of modified cellulose derivatives. According to the method, sodium carboxymethyl cellulose is taken as a raw material, and a target product is prepared through a three-step method of epoxy group grafting, sulfydryl-epoxy click chemical reaction and pyridine quaternization reaction in sequence. According to the method, the high efficiency of click chemistry and the modular design concept are innovatively introduced into the field of cellulose derivative modification, the problems that a traditional quaternization method is uncontrollable in substitution degree, many in side reaction and poor in molecular design flexibility are solved, and the method has the advantages of being mild in reaction condition, high in efficiency and clear in product structure.

The invention provides a diesel oil anti-wear agent and a preparation process thereof, and belongs to the technical field of diesel oil additives, and the preparation process comprises the following steps: mixing and stirring diisooctyl maleate and xylene, adding diethylenetriamine and deionized water, carrying out heating reaction, adding toluene, 4-(aminomethyl) pyridine and ethylene oxide, carrying out mixing reaction, filtering, washing, and drying to obtain the diesel oil anti-wear agent. The pyridinium-based polyester hollow capsule is prepared; the preparation method comprises the following steps: mixing xylene, catechol, ethylene phosphonic acid, ammonium persulfate and deionized water, heating, dispersing in cyclohexane, adding polyvinyl alcohol, octadecyl methacrylate and azodiisobutyronitrile, mixing and reacting to obtain catechol phosphonate nano colloidal particles; mixing and stirring the fatty acid ester solution, the oleoyl fluorocarbon copolymer and the pyridinium-based polyester hollow capsule, adding the catechol phosphonate nano colloidal particles, continuously stirring, performing ultrasonic treatment, and degassing to obtain the diesel oil anti-wear agent. The diesel oil antiwear agent can improve the antiwear property and demulsibility of the diesel oil antiwear agent.

The invention provides a non-aqueous electrolyte and a secondary battery containing the non-aqueous electrolyte. The non-aqueous electrolyte comprises an electrolyte salt, a non-aqueous organic solvent and an additive. The additive comprises a sulfonyl pyridinium inner salt compound and a sulfonyl fluoride compound. The structural formula of the sulfonyl pyridinium inner salt compound is as shown in the structural formula I. The structural formula of the fluorosulfonyl compound is shown as a structural formula II or a structural formula III. Wherein R < 1 > to R < 6 > are independently selected from hydrogen atoms and substituted or unsubstituted alkyl groups of C1 to C3, R < 7 > to R < 8 > are independently selected from hydrogen atoms and substituted or unsubstituted alkyl groups of C1 to C3, and R < 9 > is selected from alkylene groups of C1 to C10. The additive of the non-aqueous electrolyte contains a sulfonyl pyridinium inner salt compound and a sulfonyl fluoride compound, so that the high-temperature cycle performance can be improved while the high-temperature storage performance of the battery is improved. # imgabs0 #

The invention relates to a copper cluster scintillator constructed on the basis of diphenyl-2-pyridine phosphine and cuprous iodide and a preparation method and application of the copper cluster scintillator. The preparation method comprises the following steps: constructing a copper cluster scintillator by using diphenyl-2-pyridine phosphine and cuprous iodide, and preparing the copper cluster scintillator into a semitransparent scintillator film by using polyvinylpyrrolidone as a high-molecular polymer matrix and polyethylene glycol terephthalate as a spin-coating substrate; the scintillator film and a photomultiplier are optically coupled and integrated with nuclear electronics equipment to develop an alpha / beta particle pollution monitor. The copper cluster scintillator provided by the invention has excellent X-ray luminescence performance, and can realize high-sensitivity scintillation response to alpha / beta particles; the surface pollution monitor can realize sensitive detection of alpha / beta particles in the environment, and has important application value in the field of environmental radiation detection.

The invention discloses a photocurable pyridinium active monomer as well as a preparation method and application thereof. The preparation method comprises the following steps: adding diisocyanate, a solvent and a catalyst into a container, uniformly stirring, dropwise adding an alcohol compound, uniformly adding an acrylic monomer after stirring for reaction, and stirring for reaction to obtain isocyanate-acrylate; the method comprises the following steps: uniformly adding a pyridine monomer into isocyanate-acrylate, reacting for 2-4 hours, adding an alkylating reagent, reacting for 8-12 hours, and carrying out reduced pressure distillation separation to obtain the photocurable pyridinium active monomer. And uniformly mixing the photocurable pyridinium active monomer, the photoinitiator, the active diluent and the acrylate oligomer to obtain the 3D printing photosensitive resin. The method disclosed by the invention is sufficient in reaction, relatively simple in process and easy to implement, the photocurable pyridinium salt monomers with different functions can be designed according to material requirements, and the antibacterial and antistatic effects of the 3D printing material are good.

The invention discloses a fluorescent probe for targeting mitochondrial ferric ions as well as preparation and application of the fluorescent probe. The fluorescent probe is prepared by reacting cucurbit [7] uril with (E)-4-(4-(dimethylamino) styryl)-1-(3-(triphenylphosphonium) propyl) pyridine-1-onium bromide according to a molar ratio of 1: 1. The fluorescent probe can be used for detecting Fe < 3 + > ions, and has the characteristics of simple preparation method, convenience in operation, high sensitivity, high selectivity, low cost and rapidness in detection.

This invention relates to aggregation-induced emission probes with specific responses to tumor markers and their applications, belonging to the field of biochemistry. This invention utilizes molecular structure modulation to prepare a series of molecules possessing large Stokes shifts, resistance to photobleaching, near-infrared II (NIR-II) emission, and aggregation-induced emission properties. Different self-eliminating groups are attached to the dimethylamino group of the molecule via quaternization or to the pyridine group via pyridinium salting. By controlling the structure of these self-eliminating groups, activatable luminescent probes responding to different tumor markers can be constructed. These probes integrate deep NIR-II imaging, aggregation-point luminescence, large Stokes shifts, and marker-specific responses, providing a new approach for precise imaging diagnosis of tumors.

The invention discloses an application of a cyclochalcone cationic compound as a fluorescent dye in the field of pressing discoloration and detection of trace water or protonic solvents in solvents, the structural formula of the cyclochalcone cationic compound is shown in formula I. The monitoring of the trace water or protonic solvents in the solvents can be realized in the'opening 'process of a fluorescent signal of the dye; the dye fluorescence signal'closing 'phenomenon can be observed through grinding, and the process can be applied to the fields of stress detection, ink-free writing, anti-counterfeiting and the like. The dye can be prepared into test paper, developing powder and other test carriers for portable application, has the advantages of simplicity in operation, low cost, real-time detection and the like, and has the potential of large-scale popularization and application.

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 invention relates to the technical field of catalyst preparation, in particular to a coal-fired catalyst and a preparation method and application thereof.The coal-fired catalyst is at least prepared from, by weight, 180-300 parts of organic salt solution, 200-350 parts of inorganic salt solution and 50-70 parts of water, the organic salt solution at least comprises pyridinium acetate or sodium benzoate, and the inorganic salt solution at least comprises ammonium acetate or sodium benzoate; the problems that an existing oxygen supply combustion-supporting additive is poor in using effect, coal cannot be fully combusted, and the combustion efficiency cannot be remarkably improved are solved, and the application requirement of the subsequent fire coal field is better met.

A polyimide, comprising 1-100 mol % of repeating units of formula (1), based on 100 mol % of total repeating units of the polyimide, wherein each V is as defined herein; and each R1 is independently a divalent group of formula (3), wherein A is anionic, and each A is independently —O, —S, —S(O)2, —S(O)2O, —OS(O)2O, —OP(O) (OR)dO, —P(O)(Re)O, —P(O)(ORf)O, or —OP(O)(Rg)O; and X is cationic, and each X is independently Li, Na, K, Cs, Mg, Ca, Sr, Cr, Mn, Fe, Co, Ni, Cu, Ag, Zn, Cd, B, Al, Ga, In, Ge, Sn, Pb, As, Sb, phosphonium, imidazolium, guanidinium, or pyridinium; and Rd, Re, Rf, and Rg are each independently hydrogen, substituted or unsubstituted C1-8 alkyl, or substituted or unsubstituted C6-12 aryl.

The invention belongs to the technical field of organic synthetic chemistry, and discloses green and mild trifluoromethylated pyridino [1, 2-a] indole, a synthetic method and application, the method comprises the following steps: taking trifluoromethylsulfonyl pyridinium salt as a fluoroalkylation reagent under photocatalysis, and reacting the reagent with N-substituted indole to obtain the trifluoromethylated pyridino [1, 2-a] indole. According to the method, high-temperature reaction is not needed, the condition is mild, and the tolerance to a reaction substrate is good. According to the method disclosed by the invention, a photosensitizer and a metal catalyst are not needed in the reaction process, the synthetic route is green and environment-friendly, and the trifluoromethylated pyrido [1, 2-a] indole derivative can be rapidly and efficiently synthesized.

The present invention provides a fluoropolymer, which is a fluoropolymer of a monomer (I) represented by the general formula (I). Among them, based on all the polymer units constituting the above fluoropolymer, the content of the polymer unit (I) based on the monomer (I) is 40 mol% or more, and the weight-average molecular weight (Mw) is 1.4×10 4 or more. General formula (I): CX2=CX‑O‑Rf‑A (wherein, X is independently F or CF3, and Rf is a fluoroalkylene group having 1 to 40 carbon atoms, or a fluoroalkylene group having 2 to 100 carbon atoms and having an ether bond or a ketone group. A is -COOM, -SO3M, -OSO3M or -C(CF3)2OM (M is -H, a metal atom, -NR 7 4, an imidazolium with or without substituents, a pyridinium with or without substituents, or a phosphonium with or without substituents, and R 7 is H or an organic group).).

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 discloses a nickel pre-plating additive suitable for a high area and an electroplating method. The invention discloses a cleaning agent, which comprises the following five main functional additives: 10-20 wt% of a surfactant, 10-20 wt% of a brightening agent, 4-8 wt% of a leveling agent, 10-15 wt% of a softening agent, 8-12 wt% of a surface cleaning agent, 1-3 wt% of a wetting agent and the balance of five main functional additives. Wherein the brightener mainly comprises one or a mixture of more of pyridinium propyl sulfobetaine (PPS), a sodium allysulfonate aqueous solution (ALS), trichloroacetaldehyde hydrate (TCA), 1, 4-butynediol (BOZ), pyridinium hydroxy propyl sulfobetaine (PPS-OH) and butynediol ethyl oxide (BEO). The leveling machine mainly comprises one or a mixture of more of pyridinium sulfobetaine (PPS), propargyl alcohol ethyl oxide (PME), propargyl alcohol propoxy compound (PAP), butynediol propoxy compound (BMP), N, N-diethyl propargyl amine formate (PABS) and pyridinium hydroxy propyl sulfobetaine (PPS-OH). The softening agent mainly comprises one or a mixture of more of a sodium allysulfonate aqueous solution (ALS), sodium allysulfonate (SAS), N, N-diethyl propynylamine (DEP) and propinyl-3-sulfopropyl ether sodium salt (POPS). The surface cleaning agent mainly comprises one or a mixture of more of sodium gluconate, sodium benzoate, sodium salicylate, sodium acetate, sodium hypophosphite and 2, 5-dimethyl-3-hexyne-2, 5-diol (HD-M). The wetting agent mainly comprises one or a mixture of more of 2-ethylhexyl sodium sulfate (TC-EHS), sodium dihexyl sulfosuccinate and sodium mono (2-ethylhexyl) sulfate. The corresponding substances are classified according to the characteristics of the additive, and the dispersing capacity of the plating solution is remarkably enhanced by utilizing mutual synergism and combined action of different substances and matching with the formula of the Watt plating solution. Meanwhile, matching is carried out according to the characteristics of the nickel pre-plated steel strip, and the nickel pre-plated steel strip has the advantages of being suitable for a high-current-density interval, adjustable in coating glossiness, good in coating ductility, good in compactness, few in pinhole, few in blue point and the like.

Compounds for inhibiting corrosion are provided that include a pyridinium substituent and a hydroxy substituent. Also provided are methods of making the compounds. Also provided are corrosion inhibitor formulations including the compounds. Also provided are processes for inhibiting corrosion of a metallic surface using the corrosion inhibitor formulations.

The present disclosure relates to a composition comprising: (a) a cationic polymerization initiator; and (b) an indene based or cyclopentadiene based resin; wherein the cationic polymerization initiator is selected from the group consisting of (i) an aromatic sulfonium salt-based cationic polymerization initiator; (ii) a phosphonium salt-based cationic polymerization initiator; (iii) a quaternary ammonium salt-based cationic polymerization initiator; (iv) an aluminum complex-based cationic polymerization initiator; (v) an aromatic iodonium salt-based cationic polymerization initiator; (vi) an aromatic diazonium salt-based cationic polymerization initiator; (vii) a pyridinium-based cationic polymerization initiator and (viii) a mixture thereof. Also described are varnishes and coatings formed from said composition.

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 utility model relates to the technical field of chemical production, in particular to a pyridinium hydroxy propyl sulfobetaine production device which is characterized in that mounting rods are fixedly connected to the periphery of the top of a first supporting frame respectively, a stirring assembly is mounted among the mounting rods, a screening assembly is mounted at the bottom of the first supporting frame, and a drying assembly is mounted on the side face of the screening assembly; the screening assembly is matched with the reciprocating assembly to drive a screen to reciprocate, so that in the production process of pyridinium hydroxy propyl sulfobetaine, continuous screening operation of reactants can be achieved, it is not needed to carry out step by step and switch different steps depending on workers any more, the continuity and smoothness of production are greatly improved, and the production efficiency is improved. According to the automatic screening device, the production efficiency is effectively improved, automatic reciprocating motion of the screen is achieved through the arrangement of the reciprocating assembly, manual intervention is reduced, the labor cost is reduced, meanwhile, the automatic screening process is more stable and reliable, the consistency of the screening effect can be ensured, and the production efficiency and the product quality are further improved.

The application discloses a pyridine cation mitochondrial fluorescent probe, the chemical name of the probe is 4-(8-dimethylamino-5-benzocoumarin)-methylpyridine iodine salt, and the chemical structural formula is shown as formula (I). The application further discloses application of the fluorescent probe in labeling or imaging display of mitochondrial distribution or morphology in living cells and in long-range tracking display of mitochondria in living cells and imaging display of nucleoli in cells. Experiments prove that the labeled mitochondrial fluorescent probe has high light bleaching resistance and a high fluorescence quantum yield, can realize long-range tracking of mitochondria in living cells, and can label fixed nucleoli in cells. It is indicated that the fluorescent probe has potential application and development value in the fields of fluorescent probes and tissue imaging, and has a wide application prospect.