13 results about "Mercapto compound" patented technology

The invention provides a method for detecting dichromate radicals based on surface enhanced Raman spectroscopy, and belongs to the technical field of analytical chemistry. Comprising the following steps: mixing a to-be-detected sample with a sulfydryl-containing compound solution, and adjusting to an acidic condition, so that dichromate Cr (VI) and the sulfydryl-containing compound are subjected to an oxidation-reduction reaction; constructing an SERS substrate, namely preparing a ZnO / Ag heterostructure substrate; mixing the suspension of the ZnO / Ag heterostructure substrate with a reaction system to obtain a mixed solution, so that the ZnO / Ag heterostructure substrate adsorbs a sulfydryl-containing compound and enhances a Raman signal; dropwise adding the mixed solution to the surface of a solid carrier, acquiring a Raman spectrum signal by using a Raman spectrometer, and quantifying the Cr (VI) concentration through the change of signal intensity. The method realizes rapid and high-sensitivity detection of Cr (VI), has strong selectivity and anti-interference capability, and is suitable for detection in the fields of environmental monitoring, food safety, pharmaceutical analysis and the like.

The invention relates to a click photocuring material as well as a preparation method and application thereof, and relates to the field of heat-conducting insulating materials. The click photocuring material is prepared from the following raw materials: a photocuring monomer, a bifunctional or polyfunctional sulfhydryl compound, a photoinitiator and a modified heat-conducting particle filler, the click photocuring material is prepared through a thiol-ene click reaction. Compared with a traditional free radical and cation photocuring system, the click photocuring material has the advantages that the problems of oxygen inhibition, initiator residue, volume shrinkage and the like do not exist.

The application provides an isomerized eucommia elastomer and a preparation method and application thereof. The isomerized eucommia elastomer forms cis-isoprene structure in the molecular chain through self-isomerization reaction. By regulating the content of cis structure, the regulation of the regularity of the molecular chain is realized, so that the isomerized eucommia rubber no longer crystallizes at room temperature and exhibits high elasticity. Meanwhile, the suitable regularity enables the isomerized eucommia rubber to have self-reinforcing capacity and exhibit excellent mechanical strength. The application also provides a preparation method and application of the isomerized eucommia elastomer. The isomerization modification of the eucommia rubber is carried out by using a mercapto compound or a disulfide compound under the initiation of a free radical initiator. The high-performance isomerized eucommia rubber elastomer material obtained by the application does not change the original chemical structure and polarity of the eucommia rubber, has similar structure and performance to natural rubber, can make up for the problem of insufficient yield of natural rubber, and has wide application prospects in the fields of tires, conveyor belts, sealing rings, wearable devices and the like.

The application provides a perovskite work function regulator, a perovskite solar cell and a preparation method and application thereof, the perovskite work function regulator contains a mercapto compound; the mercapto compound has a mercapto functional group. The perovskite work function regulator has a simple structure, and the cost is also lower compared with a p-type dopant in the prior art. Moreover, the perovskite work function regulator is a small molecule containing a mercapto functional group, and the compatibility with a perovskite precursor solution is higher; the strong interaction between Pb and S can change the work function of the perovskite material, meanwhile, the mercapto group can be oxidized in the air to generate corresponding disulfide, and this process realizes the large-scale regulation of the work function of the perovskite and brings the improvement of the open-circuit voltage of the cell.

The invention belongs to the field of organic synthesis and photocatalysis, and relates to a method for preparing a disulfide compound and producing hydrogen by catalyzing dehydrogenation of a sulfydryl compound through cerium trichloride. A sulfhydryl compound 1 is used as a raw material, cerium salt is used as a photocatalyst, and a photocatalytic reaction is carried out under the irradiation of visible light to prepare a disulfide compound 2 and hydrogen. According to the method, a visible light catalysis system is adopted, cerium trichloride is used as a catalyst, and efficient dehydrogenation coupling reaction of the sulfhydryl compound is achieved under the conditions of normal temperature and normal pressure; in the reaction, an oxidizing agent (such as peroxide or metal high-valence salt) or a free radical initiator does not need to be additionally added, only hydrogen (H2) is used as a unique byproduct in the reaction and can be recycled, the problems of toxic byproducts and metal residues generated by using a strong oxidizing agent in a traditional method are avoided, and the method conforms to the development concept of green chemistry.

The application discloses a diarylethene polymer, and the structure is shown as (formula 1), wherein n is an integer of 2-20, R 1 independently H or F atom, R 2 independently substituted or unsubstituted aryl, and represents cis-trans isomer form. The application further discloses a preparation method of the diarylethene polymer, which comprises the following steps: (1) under the protection of inert gas, carrying out click polymerization of a binary acetylenic compound and a binary mercapto compound in an organic solvent, wherein the polymerization temperature is 20-50 DEG C, the reaction time is 1-4 hours, and the molar ratio of the binary acetylenic compound to the binary mercapto compound is 1:(1-1.1); (2) after the reaction is completed, dissolving the product in an organic solvent, then adding the product into n-hexane to carry out precipitation, collecting the precipitate, and drying to constant weight, so as to obtain the diarylethene polymer. The preparation method is high in efficiency, mild in condition, simple and easy to implement, and good in atom economy, and the obtained diarylethene polymer can be used in anti-fake and copy materials.

The application discloses a capturing device suitable for capturing rare cells and a preparation method thereof. The capturing device suitable for capturing rare cells comprises a substrate with at least a metal surface layer, a coating layer arranged on the surface of the substrate and a capturing agent connected to the coating layer, the capturing agent can specifically combine with target rare cells, and the coating layer comprises mercapto polyethylene glycol carboxyl and a mercapto compound. The application can reduce non-specific adsorption of background cells and proteins, and improve the purity of captured target cells.

The invention relates to the technical field of coatings, in particular to a photocuring hub coating and a preparation method thereof. The invention overcomes the problems of low yield and poor aging resistance of photocureable coatings in the prior art. The preparation method comprises the following steps: preparing modified acrylic resin by taking isophorone diisocyanate, tricyclodecane dimethyl carbinol, trimethylolpropane, fluorine-containing alcohol and hydroxyethyl acrylate as raw materials; dispersing the silane modified nano aluminum oxide into a monomer to prepare a dispersed filler; the modified acrylic resin, the dispersed filler, the reactive diluent, the sulfhydryl compound, the initiator and the like are compounded to prepare an acrylic coating; and finally, carrying out infrared leveling and UV-LED and mercury lamp segmented curing film forming to obtain the photocuring wheel hub coating. According to the invention, a tricyclodecane rigid framework is introduced and is matched with a segmented curing process, so that the problem of low yield of the coating is solved; and meanwhile, by utilizing the surface migration characteristic of the fluorine-containing chain segment and nano inorganic enhancement, the aging resistance of the coating is remarkably improved.

The invention belongs to the technical field of etching solutions, and particularly relates to an MTD / Cu / MoTi etching solution for a liquid crystal panel and a preparation method of the MTD / Cu / MoTi etching solution. The etching liquid comprises the following components in percentage by mass: 3%-15% of hydrogen peroxide, 1%-10% of persulfate, 5%-18% of ascorbic acid, 1%-3% of sodium molybdate, 2%-5% of a sulfhydryl compound, 1%-3% of a sulfonic acid amino compound, 1%-3% of aminophosphonic acid, 0.05%-1% of an anionic surfactant and the balance of water, wherein the sum of the mass percentages is 100%. The obtained etching solution can effectively etch an MTD / Cu / MoTi substrate, when the highest copper load is 8000 ppm, the service time can reach more than 12 h, the quality guarantee period can basically reach 15 days, the production cost is reduced, and the etching solution is widely applied to the liquid crystal panel industry.

This invention belongs to the technical field of thiol compound preparation, and particularly relates to a method for synthesizing 3-mercaptopropionic acid. The method includes the following steps: reacting acrylic acid gas and hydrogen sulfide gas under the action of an acidic catalyst, followed by post-treatment to obtain 3-mercaptopropionic acid. The acidic catalyst is a supported solid acid catalyst containing nickel, molybdenum, and cobalt active components. The support includes one or more of silicon oxide, alumina, magnesium oxide, molecular sieves, titanium oxide, zirconium oxide, and hydrotalcite. This invention selects specific catalysts and improves the reaction form and post-treatment process to achieve a reaction conversion rate >98.5%, selectivity ≥97%, and yield ≥95.74%, effectively reducing production costs and facilitating industrial application.

The present invention relates to the field of environmental catalysis, and in particular to a kind of enrichment material, enrichment column and enrichment method of metal ions, the enrichment material is used to enrich the stable metal ions and active intermediate valence metal ions in the sample; the enrichment material includes an enrichment column filler of a thiol compound bonded modified organosilicon derivative; wherein the metal ions include one or more of the ionic states of Al, Mn, Ni, Ag, Cu, Zn, Sn, Sb, Hg, Pb, Cd, Ca, Cr, and Fe, and the thiol compound includes one of 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, and 3-mercaptopropylmethyldimethoxysilane. The metal ion enrichment material provided by the present invention has a mild material usage, good enrichment and preservation ability for some metal forms that are more easily converted, can well enrich and detect ultra-trace unstable intermediate valence metal ions, and is widely used, and can preserve and detect the forms of metal ions in various solutions including environmental water bodies and biological fluids.

The application discloses a kind of solid acid modified cerium oxide abrasive grains and its preparation method and application in polishing liquid, including the following steps: (1) cerium oxide particles are soaked into sulfur-containing precursor solution, after sulfur-containing precursor is fully adsorbed on the surface of cerium oxide particles, the cerium oxide particles are separated out;(2) the separated cerium oxide particles are dried, crushed to obtain cerium oxide powder, then the cerium oxide powder is calcined to form a solid acid structure, to obtain solid acid modified cerium oxide abrasive grains;The sulfur-containing precursor is sulfur-containing inorganic salt, sulfur-containing inorganic acid, thiol, sulfhydryl, mercapto compound and sulfur-containing heterocycle, etc.In the present application, the calcination conditions of the modification process are relatively mild, which will not significantly change the particle size distribution and morphology characteristics of cerium oxide particles, and the chemical corrosion effect of the modified cerium oxide in the present application is enhanced, thereby accelerating the formation of softening layer on the surface of silicon oxide in the polishing process, which helps to reduce the surface roughness after polishing.

The invention provides a perovskite light-emitting diode device based on interface reaction activation, and belongs to the technical field of perovskite light-emitting display. The perovskite light-emitting diode device comprises a negative electrode, an electron transport layer, a perovskite light-emitting layer, a hole transport layer, a hole injection layer and a positive electrode, wherein the electron transport layer comprises tin oxide and zinc oxide, the tin oxide is arranged on the negative electrode, and the zinc oxide is arranged on the tin oxide; and the perovskite light-emitting layer is prepared by spin coating of a perovskite precursor solution added with a sulfhydryl-containing compound with an acidity coefficient of 16.0-22.0. Compared with a traditional method, the method has the advantages that the activity of passivation molecules is regulated and controlled through an interface chemical reaction, controllable in-situ powerful passivation of perovskite is achieved, the obtained perovskite thin film has excellent light stability and thermal stability, the service life of a device prepared on the basis of the perovskite thin film is remarkably prolonged, and a new strategy is provided for improving the stability of a perovskite photoelectric device.