15 results about "Diphenyl sulfide" patented technology

This invention discloses a method for preparing diphenyl sulfide compounds from arylsulfonyl chlorides, comprising the following steps: using a sulfonyl chloride compound as shown in formula (I) as a raw material, adding a catalyst, ligand, additive, base, and solvent to a reactor, and reacting under a nitrogen atmosphere to obtain a diphenyl sulfide compound as shown in formula (II). The reaction equation is as follows: wherein the H on the benzene ring is substituted or not substituted by a substituent R, and when substituted, R is fluorine, chlorine, bromine, methyl, tert-butyl, or trifluoromethyl. This invention provides mild reaction conditions, uses inexpensive and readily available raw materials, and efficiently promotes the preparation of sulfide compounds.

The invention belongs to the field of agricultural acaricides. In particular to a biphenyl thioether (sulfoxide) compound and application thereof. The structure is shown as a general formula I, wherein each substituent group in the formula is defined in the specification. The compound as shown in the general formula I has excellent acaricidal activity and can be used for preventing and treating various pest mites.

The invention discloses a synthesis method of a high-abundance C-13 ethylene oxide compound, which comprises the following steps: (1) carrying out reaction on 13CH3I and diphenyl sulfide to obtain [13C] diphenylmethyl iodide; and (2) reacting the [13C] diphenylmethyl iodide with a carbonyl compound to obtain the high-abundance [13C] ethylene oxide compound. Diphenyl sulfide is adopted to replace dimethyl sulfide, the obtained [13C] methyl diphenyl sulfonium iodide avoids C-13 loss in the subsequent reaction process, and the abundance of C-13 is effectively improved.

The application discloses a battery pack fireproof and heat-insulating coating and a preparation method thereof, and relates to the technical field of fireproof coatings. The battery pack fireproof and heat-insulating coating prepared by the application comprises a composite flame-retardant charring agent, modified phenolic resin, fillers, a silane coupling agent and a defoaming agent. The modified phenolic resin is prepared by the reaction of double-end hydroxyl polyphenyl ether, amino-phenolic resin and polythioacetal. The double-end hydroxyl polyphenyl ether is prepared by the reaction of 2,6-dimethylphenol and tetramethyl bisphenol A. The polythioacetal is prepared by the polymerization of 1,3-dimercapto-2-propanol and cinnamaldehyde. The thermal stability is improved, and the coating has the ability of self-repairing. The composite flame-retardant charring agent is prepared by the reaction of a sulfonamide piperazine compound, 4,4'-dimercaptodiphenyl sulfide and diamino diphenyl methane modified ammonium polyphosphate. The sulfonamide piperazine compound is prepared by the reaction of chlorosulfonyl isocyanate and piperazine, and then the reaction with chloroacetyl chloride. The carbonization property and thermal stability of the coating are improved.

The embodiment of the application provides a sulfur-containing polymer electrolyte and a preparation method thereof, relates to the technical field of supercapacitors, and the preparation method comprises the following steps: mixing double-hydroxyl-terminated polyether sulfone, 4,4'-dimercaptodiphenyl sulfide and an N,N-dimethylformamide solution, the N,N-dimethylformamide solution comprising an electrolyte salt and N,N-dimethylformamide, and stirring at a constant temperature under the protection of an inert atmosphere to generate a monomer mixture; adding terephthaloyl chloride to the monomer mixture to perform a polycondensation reaction, so as to obtain a prepolymer solution; heating the prepolymer solution to perform a post-polymerization reaction, cooling the prepolymer solution to room temperature, adding trimethylolpropane triacrylate and a photoinitiator and uniformly dispersing, so as to obtain a mixed system; performing a cross-linking reaction on the mixed system under ultraviolet light irradiation, so as to form a three-dimensionally cross-linked sulfur-containing polymer electrolyte film; and performing drying treatment on the sulfur-containing polymer electrolyte film, so as to remove residual solvents and obtain a target sulfur-containing polymer electrolyte.

The invention relates to the technical field of polymer synthesis, in particular to polyarylether containing pyridine groups and thioether groups as well as a preparation method and application of the polyarylether. A pyridine-containing bisphenol monomer, a 4, 4 '-dihydroxy diphenyl sulfide monomer and a dihalo monomer X-Ar-X are used as raw materials, alkali, alkali metal or salt of alkaline earth metal is used as a catalyst, and solution polycondensation is carried out in an aprotic polar solvent to prepare the pyridine-containing dihydroxy diphenyl sulfide. The diphenyl sulfide structure in the molecular chain of the obtained polymer endows the molecular chain with flexibility, the regularity of the molecular chain can be improved, crystallization is more facilitated to obtain a partially crystallized polymer, the limitation of pyridyl-containing agglomerated arylether on application is overcome, swelling of water or a solvent and the like on a membrane can be effectively inhibited, and the polymer has good application prospects. Particularly, the adverse effect of poor membrane stability caused by high swelling of the membrane due to water when the membrane serves as an ion exchange membrane to be applied to a flow battery is avoided. And the polyarylether containing the pyridine group and the thioether group can provide potential thioether crosslinking points with accurate and controllable quantity, so that the swelling resistance and the chemical stability of the membrane material are improved.

As described herein, the dark count rate (DCR) of perovskite photon-counting detectors (PCDs) was dominated by charge de-trapping from shallow traps located at the grain boundaries and surface, and the ultra-low DCR was achieved by suppressing the shallow traps by enhancing grain size and passivating film surface with diphenyl sulfide. The suppression of shallow traps made the perovskite PCDs have 100-1000 times lower DCR and much better response linearity to weak light than SiPMs. and the DCR was not sensitive to temperature due to small activation energy of charge traps. The zero-bias operating perovskite PCDs were demonstrated as γ-ray spectrum detectors with better energy resolution under 57Co source than commercial SiPMs at room temperature. At higher temperature up to 85° C. the perovskite PCDs are much superior to SiPMs by maintaining the energy resolution, showing their potential of working in harsh environment. This study discovered regular surface passivation also dramatically impact shallow charge traps, which should have implication of perovskite stability and doping.

The invention relates to the technical field of compound preparation, in particular to a preparation process of 2, 2, 2-trifluoroethyl diphenyl sulfonium trifluoromethanesulfonate. Comprising the following steps: reacting 2, 2, 2-trifluoroethanol, formic acid and acetic anhydride, rectifying the reaction liquid, and collecting a target fraction to obtain 2, 2, 2-trifluoroethyl formate; according to the method, 2, 2, 2-trifluoroethyl formate, diphenyl sulfide and trifluoromethanesulfonic acid are subjected to a reaction, reaction liquid is cooled, solids are separated out, organic solvent washing is carried out, 2, 2, 2-trifluoroethyl diphenyl sulfonium trifluoromethanesulfonate is obtained, the purity can reach 99.7%, and the total reaction yield can reach 78.93%. The preparation process provided by the invention has the advantages of cheap and easily available raw materials, simple operation, high reaction yield, mild reaction conditions, high safety and simple reaction post-treatment, and is suitable for industrial large-scale production.

The invention belongs to the field of functional macromolecules, and particularly relates to a detachable and repairable epoxy vitrimer based on a dynamic carbon-sulfur bond and a preparation method of the detachable and repairable epoxy vitrimer based on the dynamic carbon-sulfur bond, and the detachable and repairable epoxy vitrimer is prepared by taking diphenylmethane bismaleimide, trimethylolpropane triglycidyl ether, dimercaptodiphenyl sulfide or octyldithiol and triethylamine as raw materials, and carrying out curing reaction at 50-150 DEG C for more than 4 hours. After complete curing, the epoxy vitrimer has good solvent resistance, can be completely disassembled in a specific sulfydryl solvent at the same time, and in addition, can realize hot-pressing recovery and remolding at a high temperature.

The invention relates to an electrostatic spraying process for a flame-retardant electrical cabinet metal plate, and belongs to the technical field of electrical cabinet surface treatment. The electrical cabinet sheet metal part is sequentially subjected to degreasing, acid pickling, phosphating, water washing and drying treatment; the preparation method comprises the following steps: putting epoxy resin, a modified aliphatic amine curing agent, 4-ferrocenyl butyl methacrylate, 4, 4 '-dimercaptodiphenyl sulfide, benzoyl peroxide, a composite flame retardant, a pigment filler, a carboxyl-terminated nitrile rubber flexibilizer, an acrylate leveling agent, an antioxidant and a diluent into a mixing machine, and mixing to obtain plastic spraying powder; the pretreated sheet metal part is placed in a spraying room, electrostatic spraying, curing forming and aftertreatment are conducted on the surface of the sheet metal part, and the flame-retardant electrical cabinet sheet metal part is obtained; the prepared plastic spraying coating is high in oxygen index, the vertical combustion grade reaches the V-0 grade, the flame retardant effect is excellent, and combustion accidents caused by high temperature and electric sparks of an electrical cabinet can be effectively prevented.

The embodiment of the invention provides a sulfur-containing polymer electrolyte and a preparation method thereof, and relates to the technical field of supercapacitors. The method comprises the following steps: mixing 4, 4 '-dimercaptodiphenyl sulfide with an N, N-dimethylformamide solution which comprises an electrolyte salt and N, N-dimethylformamide, and stirring at a constant temperature under the protection of an inert atmosphere to generate a monomer mixture; paraphthaloyl chloride is added into the monomer mixture for condensation polymerization, and a pre-polymerization solution is obtained; heating the pre-polymerized liquid to carry out post-polymerization reaction, cooling the pre-polymerized liquid to room temperature, adding trimethylolpropane triacrylate and a photoinitiator, and uniformly dispersing to obtain a mixed system; the mixed system is subjected to a cross-linking reaction under ultraviolet irradiation, and a three-dimensional cross-linked sulfur-containing polymer electrolyte membrane is formed; and drying the sulfur-containing polymer electrolyte membrane, and removing the residual solvent to obtain the target sulfur-containing polymer electrolyte.

The present application relates to the technical field of perovskite solar cells, and particularly relates to a diphenyl sulfide derivative, a preparation method thereof and a perovskite solar cell. The compound has dual functions of defect passivation and carrier transport through unique molecular structure design, and can effectively regulate the crystallization behavior of a perovskite thin film. When the compound is added to a perovskite precursor solution, the coordination of sulfur atoms and lead ions in the perovskite and the interaction of halogen atoms and lattice defects can significantly reduce the defect state density of the perovskite thin film, inhibit non-radiative recombination and ion migration, and optimize the charge transport path, thereby improving the open-circuit voltage, fill factor and power conversion efficiency of the perovskite device. In addition, the synthesis path and application method of the diphenyl sulfide derivative provided by the present application have the advantages of simple operation, controllable cost and great industrialization potential, and provide a new scheme for the preparation of high-efficiency and stable perovskite solar cells.

The invention discloses an optical monomer as well as a preparation method and application thereof, the structural general formula of the optical monomer is shown as the following formula: R is a sulfur-containing group; the sulfur-containing group is selected from one of the following groups: C2-C5 saturated aliphatic chains substituted by at least two sulfur, diphenyl sulfide substituted by two sulfur, phenyl substituted by two sulfur, biphenyl substituted by two sulfur and naphthyl substituted by two sulfur. According to the optical monomer provided by the invention, the optical monomer has two thiophene groups, so that the stacking performance of molecules can be improved, the refractive index can be increased, and the molecular rigidity can be increased; the sulfur-containing groups can bring more thioether bonds, so that the electron cloud density and polarizability in unit volume are increased, and the refractive index of the optical monomer can be improved. The thiophene ring is matched with sulfur-containing groups through NHS = C-, the chain length of the total molecular chain is appropriate, no characteristic absorption exists in a visible light area as far as possible, and high light transmittance is achieved. The sulfydryl group can be used as a reactive functional group to react with other groups.

This invention discloses a method for preparing asymmetric diphenyl sulfide compounds. Disubstituted phenyl disulfide and lithium chloride-containing substituted phenyl magnesium halide (Knochel-type Grignard reagent) are dissolved in an organic solvent, and the reaction is stirred at room temperature while the reaction progress is monitored using gas chromatography. After approximately 2 hours, the reaction proceeds completely. The reaction solution is extracted with ethyl acetate, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain a crude product. Subsequently, the crude product is purified by column chromatography to obtain the desired asymmetric diphenyl sulfide compounds. This method uses disubstituted phenyl disulfide and lithium chloride-containing substituted phenyl magnesium halide (Knochel-type Grignard reagent) as starting materials to synthesize asymmetric diphenyl sulfide compounds. The synthetic route is simple, requires no external transition metal catalyst, exhibits good functional group tolerance, can be scaled up, and is easy for industrial production.

The invention belongs to the technical field of antioxidants, and particularly relates to an amide hindered phenol antioxidant as well as a preparation method and application thereof. According to the present invention, the traditional hindered phenol antioxidant preparation process is improved, such that the 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate and the aromatic amine compound (such as aniline and 4, 4-diaminodiphenyl sulfide) are directly subjected to the reaction to prepare the antioxidant having the specific structure and the excellent antioxidant effect, a new thought is provided for design and preparation of a novel high-performance phenol antioxidant.