36 results about "Diethyl chlorophosphate" patented technology

The invention relates to a detection diethyl chlorophosphate (DCP) fluorescent probe compound based on boron dipyrromethene (BODIPY) and preparation and application of the detection diethyl chlorophosphate (DCP) fluorescent probe compound. The detection diethyl chlorophosphate (DCP) fluorescent probe compound has the structure shown in the formula I. A preparation method includes the steps that an acetonitrile solution containing 4-(4-hydroxyphenyl)benzonitrile, anhydrous magnesium chloride, paraformaldehyde and triethylamine is subjected to heating and refluxing under protection of nitrogen to obtain white solid III; the obtained solid III and pyrrole are mixed and dissolved in dichloromethane; grey white solid II is obtained under catalysis of trifluoroacetic acid; and the obtained grey white solid II is subjected to DDQ oxydehydrogenation and boron trifluoride diethyl etherate coupling to obtain orange solid I. The probe compound has very good selectivity and sensitivity for DCP, the detection limit is low, and the probe compound can be applied to DCP content measurement.

A single step method for producing a redox shuttle having the formula 2,5-di-tert-butyl-1,4-phenylene tetraethyl bis(phosphate) is provided, the method comprising phosphorylating tert butyl hydroquinone with a phosphate-containing reagent. Also provided is method for producing 2,5-di-tert-butyl-1,4-phenylene tetraethyl bis(phosphate), the method comprising solubilizing tert-butyl hydroquinone and tetrabutylammonium bromide with methyltetrahydrofuran to create a mixture; heating the mixture while adding base to the mixture in an amount to turn the mixture orange; and adding diethyl chlorophosphate to the orange mixture in an amount to phosphorylate the hydroquinone.

The invention discloses functional pyrophyllite powder and an application of the functional pyrophyllite powder in a reinforced and toughened PC-ABS (polycarbonate-acrylonitrile butadiene styrene) alloy. The functional pyrophyllite powder is prepared by performing acid treatment and alkali treatment on pyrophyllite powder, and then adding methacrylamide, silicane, triphenyl phosphate and diethyl chlorophosphate for functional modification. Compared with the prior art, the functional pyrophyllite powder is applied to preparation of the toughened and reinforced electroplated PC-ABS alloy, and aprepared toughened and reinforced electroplated PC-ABS alloy material has good electroplating performance, and higher tensile strength, bending strength, impact toughness and flame retardance, is extensive in application scope, and can be used for the field of forming various products that have requirements of higher comprehensive performance and good flame resistance on materials and higher surface requirements and are required to be electroplated.

The invention discloses a phosphorylated polymer composite film for a full vanadium flow battery and a preparation method thereof. The polymer composite film has a structure shown as a formula (I). The preparation method comprises the following steps of: mixing a monomer mixture, chloromethylate polysulfone, cuprous chloride, genin and a solvent; performing deoxidization; perfomring polymerization; dissolving the obtained polymer into dioxane; adding triethylamine and the cuprous chloride; adding diethyl chlorophosphate dropwise; reacting and filtering; adding filtrate into norml hexane to precipitate; redissolving the precipitate into chloroform; adding the solution into the norml hexane again to precipitate; washing the precipitate; drying to obtain the phosphorylated polymer; dissolving the phosphorylated polymer into a high-boiling-point solvent to obtain phosphorylated polymer solution; forming a film on a glass plate; demoulding in water to obtain a phosphorylated polymer film; placing the phosphorylated polymer film into concentrated hydrochloric acid to perform reflux and hydrolysis; taking out the phosphorylated polymer film to wash with water; and drying to obtain the product. The phosphorylated polymer composite film has low vanadium ion permeability, high proton conductivity, stable mechanical and chemical properties and low cost.

The invention belongs to marine chemical engineering technology, in particular to a chitosan oligosaccharide derivative containing thiourea and diethoxyphosphoramide structure and a preparation method thereof. The chitosan oligosaccharide derivative containing thiourea and diethoxyphosphorhydrazide structure is shown in formula I, wherein, n=2‑20. In the present invention, at first by chitosan oligosaccharide and 1,2-dibromoethane reaction generates bromoethyl chitosan derivative, then adds ammonium thiocyanate, reacts with bromoethyl to produce isothiocyanate ethyl shell Oligosaccharide derivatives, the isothiocyanate group is further reacted with hydrazine hydrate to obtain aminothiourea ethyl chitooligosaccharide derivatives containing thiourea groups, and finally reacted with diethyl chlorophosphate to obtain thiourea and chitosan oligosaccharide derivatives with diethoxyphosphoramide structure. The resulting derivatives were analyzed by infrared spectroscopy to determine their structure. Chitooligosaccharides were effectively combined with the inserted groups to generate chitosan oligosaccharide derivatives containing thiourea and diethoxyphosphoramide structures, which improved the biological activity of chitosan oligosaccharides. .

The invention provides a new method of the one-pot synthesis of methylthio aryl alkynye 1 based on 4-sulfenyl-1-aryl-1,3-butanedione substrates. lithium hexamethyldisilazide (LiHMDS) is added in tetrahydro furan (THF) solution containing 4-sulfenyl-1-aryl-1, 3-diacetyl under the protection of low temperature nitrogen, and the stirring is carried out; in addition, diethyl chlorophosphate [ClP(O)(OEt)2] is dripped into the above-mentioned reaction system, the temperature rises to reach the room temperature naturally after the dripping is finished, and stirring is carried out continuously. The reaction system is cooled down to get low temperature again, then LiHMDS is dripped into the reaction system, and stirring is carried out continuously for reaction under the temperature. Reaction mixtures are processed through conventional post-processing and column chromatography separation, and then methylthio aryl alkynye is obtained. The new method is simple, convenient and economical to prepare methylthio aryl alkynye.

The invention relates to a fluorescent probe for detecting sarin and an analogue thereof. The fluorescent probe comprises a compound which is loaded on a substrate and has a structure shown as a formula I, wherein the formula I is shown in the description. The invention further provides a synthesis method and application of the fluorescent probe for detecting the sarin and the analogue thereof. According to the application provided by the invention, when a compound with the structure shown as the formula I in the fluorescent probe is in contact with the sarin or the DCP (Diethyl Chlorophosphate) in air, the fluorescence intensity and the emission wavelength are both changed, and gas-phase detection of the sarin and the DCP can be realized. The compound with the structure shown as the formula I can have one or more terpyridines; when the sarin or the DCP reacts with one certain pyridine in one certain terpyridine in a molecule, charge transferring from the fluorescent probe to the sarin or the DCP occurs; meanwhile, energy transferring from a polymer core to a peripheral radical occurs, and fluorescent quenching of the whole molecule is caused, so that the fluorescent probe has excellent sensing performance.

The invention provides a one-pot synthesis method of conjugate eneyne thioether based on 1-hydrocarbon sulfenyl-4-aryl-butene-2-ketone substrate. The method includes feeding Lithium Hexamethyldisilazide (LiHMDS) to a tetrahydrofuran (THF) solution of 1-hydrocarbon sulfenyl-4-aryl-butene-2-ketone under protection of low-temperature nitrogen; stirring; adding [C1P(O) (OEt)2] dropwisely to the reaction system, increasing the temperature to a room temperature after the addition and continuing to stir; after the reaction system cools again to a low temperature, dripping the LiHMDS to the reaction system and stirring for reaction under the temperature; and obtaining the conjugate eneyne thioether from the reaction mixture after normal aftertreatment and column chromatographic separation. The method is a convenient and economical processing method for the conjugate eneyne thioether.

The invention discloses a structure controllable phosphorylated polymer composite film used for a vanadium battery and a preparation method thereof. The polymer composite film has the structure shown in the formula (I). The preparation method of the polymer composite film comprises the steps of: preparing a copolymer containing an alkynyl; preparing polysulfone containing an azide group; preparing a polymer; preparing a polymer containing an oxhydryl; dissolving the polymer containing the oxhydryl in dioxane, adding triethylamine and cuprous chloride, dropping diethyl chlorophosphate, filtering after reaction, adding filtrate in normal hexane to be precipitated, dissolving the precipitate in chloroform again, adding the solvent in the normal hexane to be precipitated again, and washing and drying the precipitate to obtain a phosphorus-esterificated polymer; dissolving the phosphorus-esterificated polymer in a high-boiling-point solvent to obtain a phosphorus-esterificated polymer solution; forming a film on a glass plate, and demolding in water to obtain a phosphorus-esterificated polymer film; and putting the film in concentrated hydrochloric acid for back flow and hydrolysis, taking the film out, washing and drying the film to obtain a product. The composite film has low permeability of vanadium ions, good proton conductivity, stable mechanical performance and chemical performance, and low cost.

The invention provides an intumescent flame retardant functionalized hydrotalcite flame retardant. The flame retardant is good in flame retardant effect, and adopts a halogen-free system, so that secondary harm during combustion of materials is reduced. The intumescent flame retardant functionalized hydrotalcite flame retardant is prepared through the steps as follows: a silane coupling agent containing amine groups and hydrotalcite powder particles react with each other to prepare silane coupling agent modified hydrotalcite, and then, the silane coupling agent modified hydrotalcite and diethyl chlorophosphate react with each other. The flame retardant is wide in application range, good in flame resistant effect, and stable in performance; the preparation process of the flame retardant is simple and convenient in operation, the cost is low, the solvent recycling is convenient, and obtained products are easy to separate, so that the industrial production is facilitated.

The invention provides an organic fluorescent molecule and its preparation method, a fluorescent sensor and its application, and a standard fluorescent card, belonging to the technical field of fluorescent sensing. The skeleton of the organic fluorescent molecule provided by the present invention is made of 2,2′:6′,2″ terpyridine (TPY) and an electron-donating group, and the TPY group is used as an electron-accepting group. After the A group in formula I), an intramolecular charge transfer state (CT) can be formed to construct a donor-acceptor type organic fluorescent material; at the same time, the TPY group can also be used as a recognition site for a sensing reaction to the parent Electrical nerve agent molecules are detected. After the organic fluorescent molecules are made into sensors, efficient and rapid fluorescence / production of trace sarin poison (Sarin) and / or diethyl chlorophosphate (DCP) in liquid and gas phases can be realized. Color dual-channel detection, fast response, good selectivity, high sensitivity and reusable.

The invention discloses a synthesis method of 1, 4-bis [4-(di-p-toluene amino) styryl] benzene. The method comprises the following steps that: 4-(di-p-toluene) benzaldehyde, p-dibenzyl benzene diethyl chlorophosphate, sodium tert-butoxide and N, N-dimethyl acetamide are added into a reaction bottle at room temperature, after the materials are dissolved through stirring, the reaction bottle is placed into a microwave chemical reactor, the reaction lasts 3 to 10 minutes at the microwave radiation power being 800W, the reaction liquid is poured into 100mL methanol solution, filtration is carried out, and the 1, 4-bis [4-(di-p-toluene amino) styryl] benzene is obtained after the methylbenzene recrystallization. The synthesis method is mainly used for preparing the 1, 4-bis [4-(di-p-toluene amino) styryl] benzene.