1578results about "Silicon organic compounds" patented technology

The invention belongs to the technical field of OLEDs, and provides a polycyclic compound containing triphenyl silicon and a polyalkyl substituent group and an organic electroluminescent device containing the polycyclic compound. The structural general formula of the polycyclic compound is as shown in formula I in the specification. Benzofuran with higher electronegativity is introduced to a ring structure composed of nitrogen atoms and boron atoms, triphenyl silicon is introduced to the para-position of boron, and the synergistic effect of benzofuran and triphenyl silicon can significantly enhance the multiple resonance of a light-emitting core and reduce vibration relaxation. Due to simultaneous use of the benzofuran and the triphenyl silicon, the problems of vibration relaxation increase, spectrum widening and the like caused by introduction of the polyalkyl substituent are remarkably improved, the luminous efficiency of the material is remarkably improved, and the color purity is improved, so that the requirement of BT.2020 wide color gamut display standard on a luminescent spectrum is met. I

The invention belongs to the technical field of pharmaceutical chemical processes, and particularly relates to a preparation method of a penem antibiotic intermediate 4-BMA, which comprises the following steps: adding Zn powder, chlorosilane, aliphatic tertiary amine, zinc salt and 4-AA in a formula (I) into THF (tetrahydrofuran), uniformly stirring, dropwise adding a THF solution of alpha-haloamide with an induction group in a formula (II) for reaction, filtering the reaction solution, removing the zinc powder, and drying to obtain the penem antibiotic intermediate 4-BMA. Extracting the filtrate to obtain a THF phase, washing with an aqueous solution of potassium oxalate, and recovering THF to obtain a formula (III); and carrying out oxidative hydrolysis, sulfur dioxide quenching, sulfur dioxide acid regulation crystallization and recrystallization on the formula (III) to obtain the intermediate 4-BMA. According to the preparation method disclosed by the invention, a zinc salt is used as a catalyst during preparation of the formula (III), potassium oxalate is used for removing residual Zn (II) in a THF phase, SO2 is used for quenching hydrogen peroxide and acid regulation and crystallization of 4-BMA, the oxygenolysis problem of 4-BMA is solved, and the preparation method has the characteristics of greenness, safety and high efficiency, is strong in product competitive advantage and is suitable for industrial production.

A surface treatment agent containing a hydrocarbon-terminal-group-containing compound of the following formula makes it possible to form a cured film that is exceptional in water repellency, slipperiness, dirt removability, and abrasion resistance, particularly steel wool abrasion resistance and wet abrasion resistance. (R1 is a C12-80 monovalent hydrocarbon group that includes a C12 or higher monovalent or divalent linear unsubstituted aliphatic saturated hydrocarbon group and does not contain a hydrocarbon branched structure, R2 is H, a halogen atom, a hydroxyl group, a siloxy group, an -OSi(CH3)3 group, an -OSi(C2H5)3 group, an amino group, an SH group, a monovalent hydrocarbon group, R1, -V-Z-(Y-A)m, or -Y-A, U is a single bond, C, or a trivalent or tetravalent organic group, V is a single bond or a divalent hydrocarbon group, Z is a single bond, C, Si, N, S, or a trivalent to octavalent organic group, Y is a single bond or a divalent hydrocarbon group, A is a monovalent reactive group, k is 0, 1, or 2, and m is 1-7.)

To provide a coolant which exhibits relatively excellent fluidity even at low temperatures and can be easily handled and stored due to having a high flash point.SOLUTION: This coolant contains an organopolysiloxane represented by formula (1) (wherein R1 moieties are each independently a methyl group or an ethyl group, and n is 2 or 3), and is characterized in that the organopolysiloxane has a kinematic viscosity of 100 mm2 / s or less at -80°C and 300 mm2 / s or less at -100°C.SELECTED DRAWING: None

The invention relates to a compound, a composition, an organic optoelectronic device, and a display device. The compound is represented by Chemical Formula 1, where X1 and X2 are each independently NRa, O, S, Se, or Te, any one of R1 to R10 is a group represented by Chemical Formula A, the remaining ones of R1 to R10 and Ra are each independently hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, a substituted or unsubstituted amine group, a substituted or unsubstituted silyl group, a cyano group, or a halogen, and R1 to R10 and Ra are each independently present, or adjacent two of R1 to R10 and Ra are linked to form a ring.

The utility model relates to the technical field of chemical separation, and provides a dividing wall column and a rectification device.The dividing wall column comprises a column body, a partition plate, a first distributor and a first liquid collection tray, the partition plate is arranged in the column body and extends in the height direction of the column body, and the top face of the partition plate and the inner top wall of the column body are arranged at intervals in the height direction of the column body; the bottom surface of the partition plate and the inner bottom wall of the tower body are arranged at intervals; in the height direction intersecting with the tower body, one side wall face of the partition plate and a part of the inner wall of the tower body define a feeding section, the other side wall face of the partition plate and the other part of the tower body define a discharging section, the first distributor is arranged in the feeding section and connected with the tower body and the partition plate, and the first liquid collecting disc is arranged in the discharging section and connected with the tower body and the partition plate. According to the invention, the problems of high energy consumption and large occupied area when silicate ester is separated in a double-tower rectification mode can be solved.

Novel compositions and systems for closure of wounds with antimicrobial effectiveness are disclosed. The compositions provide devices of improved flexibility and elasticity and are readily applied to wound sites or over wound closure devices. The present invention is also directed to a novel platinum catalyst for use in such compositions. The catalyst provides for rapid curing on topical surfaces such as skin and bonds to such surfaces in about 2-5 minutes.

The invention relates to a continuous production method of high-purity tetraethoxysilane, and belongs to the technical field of tetraethoxysilane preparation. The method comprises a raw material pretreatment stage and a purification and rectification stage: in the pretreatment stage, silicon tetrachloride and ethanol are subjected to an esterification reaction in a molar ratio of 1: (3-4) under the protection of nitrogen, the pH is adjusted to be neutral through triethylamine, and triethylamine hydrochloride is removed through reduced pressure distillation; then, a cerium oxide-molecular sieve composite adsorbent with the specific surface area larger than or equal to 800 m / g and the pore diameter of 2-5 nm is adopted for dehydration under the pressure of 0.8-1.2 MPa till the water content is smaller than or equal to 5 ppm, and volatile impurities are removed through high-purity nitrogen purging; in the purification stage, metal ions and Cl are synergistically removed through a titanate modified resin layer and a nano TiOtube layer, and then step-by-step separation is performed through a four-stage differential pressure rectifying tower. Through collaborative optimization of structural design of the composite adsorbent, construction of an organic-inorganic hybrid interface of the resin layer and pressure gradient rectification, 72-hour continuous production is achieved, the single-pass yield of the product is 92%, and the total amount of metal impurities is smaller than or equal to 5 ppb.

The invention provides a boron-containing organic compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. According to the boron-containing organic compound as shown in the formula 1, a spiro structure is added on a classic boron-nitrogen parent nucleus, and arylamine / carbazole groups are introduced on the spiro structure, so that steric hindrance is increased, molecular vibration is reduced, and pi-pi accumulation interaction among planar boron-containing / nitride molecules is effectively inhibited. The boron-containing organic compound as shown in the formula 1 is applied to the organic electroluminescent device as a doping material, not only can the spectrum be narrowed and the color purity be improved, but also the quenching caused by aggregation can be overcome, the luminous efficiency of the organic electroluminescent device is improved, and the service life of the organic electroluminescent device is prolonged. The material can be applied to the fields of information display, illumination, organic solar cells and the like, and has a very good market prospect.

The invention provides a sulfinate organic positive alkali metal ion supplement for a secondary battery, and relates to the technical field of secondary batteries. The organic positive electrode alkali metal ion supplement has a structure as shown in the following general formula: [R-SO2]-M < + >, wherein M < + > is a metal cation and is selected from at least one of Li < + >, Na < + > and K < + >; [R-SO2]-is a sulfinate anion, and wherein R is an organic group. The supplement compensates irreversible capacity loss by efficiently releasing active ions, so that the energy density of the battery is improved; the oxidation potential is proper, the environmental stability is excellent, and the catalyst is not needed to decompose and easy to process; decomposition products are harmless, an electrode interface can be optimized, and the cycle life of the battery is remarkably prolonged.

The present disclosure provides siloxane derivatives of amino acids that have surface-active properties. The amino acid can be naturally-occurring or synthetic, or they may be obtained via a ring-opening reaction of a lactam, such as caprolactam. The amino acid may be functionalized with a siloxane group to form a compound that is surface-active and has surfactant characteristics. The compounds have low critical micelle concentrations (CMC) as well as the ability to lower the surface tension of a liquid.

The invention discloses an ether chain modified rhodamine fluorescent dye, an ether chain modified rhodamine fluorescent dye probe and a preparation method and application thereof, through modification of an ether chain, the water solubility of the rhodamine dye is improved, the aggregation quenching effect is reduced, meanwhile, the intramolecular torsional charge transfer (TICT) is reduced through the electron withdrawing effect of oxygen atoms, and the fluorescence sensitivity is improved. Finally, the quantum yield of the rhodamine dye is greatly improved. The quantum yield of ether chain modified oxygen rhodamine water is increased from 0.31 to 0.70, and the quantum yield of silicon-based rhodamine water is increased from 0.19 to 0.41. The rhodamine dye disclosed by the invention has the characteristics of high brightness, easiness in functional derivation and the like, and has application prospects in the fields of fluorescent probes, fluorescent labels, super-resolution fluorescence imaging and the like.

The invention provides a host material, a dual-host-containing organic electroluminescent material and a preparation method and application thereof, the host material has a structure as shown in a general formula 1, the dual-host-containing organic electroluminescent material comprises a first host material and a second host material, and the mass ratio of the first host material to the second host material is 1: 99-99: 1, the first main body material is a compound with a structure as shown in a general formula 1, and the second main body material has a structure as shown in a general formula 2. Triplet excitons are dispersed on two main bodies by using the double main body material, so that triplet-triplet annihilation (TTA) is reduced, the driving voltage of the organic electroluminescent device is reduced, and the driving efficiency of the organic electroluminescent device is improved. And the luminous efficiency and the service life of the device can be improved.

Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20° C. to about 45° C. The reaction product is separated and washed with saturated alkali carbonate solution.

The present disclosure provides siloxane derivatives of amino acids that have surface-active properties. The amino acid can be naturally-occurring or synthetic, or they may be obtained via a ring-opening reaction of a lactam, such as caprolactam. The amino acid may be functionalized with a siloxane group to form a compound that is surface-active and has surfactant characteristics. The compounds have low critical micelle concentrations (CMC) as well as the ability to lower the surface tension of a liquid.

The invention discloses a fluorescent probe as well as a preparation method and application thereof. The invention provides a series of fluorescent probes with novel structures, and the fluorescent probes take 2-(isoquinoline-1-yl) pyrrole boron difluoride as fluorophores, so that the fluorescence quantum yield of the probes is improved, the detection resolution of nitric oxide is increased, and the detection sensitivity is improved. The fluorescent probe disclosed by the invention has the characteristics of large Stokes displacement, high fluorescence quantum yield, good selectivity and short response time.

Synthesis reactions are described to efficiently and specifically form compounds of the structure RSnL3, where R is an organic ligand to the tin, and L is hydrolysable ligand or a hydrolysis product thereof. The synthesis is effective for a broad range of R ligands. The synthesis is based on the use of alkali metal ions and optionally alkaline earth (pseudo-alkaline earth) metal ions. Compounds are formed of the structures represented by the formulas RSn(C≡CSiR′3)3, R′R″ACSnL3, where A is a halogen atom (F, Cl, Br or I) or an aromatic ring with at least one halogen substituent, R′R″(R″′O)CSnL3 or R′R″(N≡C)CSnZ3.

The application discloses a high-efficiency environment-friendly foam extinguishing agent for a converter station or a transformer substation and a preparation method thereof. A structural formula of a quaternary ammonium salt modified tetrasiloxane surfactant used in the extinguishing agent is shown in the specification. The surface tension of the quaternary ammonium salt modified tetrasiloxane surfactant is less than or equal to 20.8 mN / m. The quaternary ammonium salt modified tetrasiloxane surfactant can be specifically applied to development of the high-efficiency environment-friendly foam extinguishing agent for the converter station or the transformer substation. The high-efficiency environment-friendly foam extinguishing agent has excellent foaming performance, stability, extinguishing performance and film forming performance.

The invention belongs to the technical field of organic synthesis, and particularly relates to an alkyl pentafluorosulfenyl compound and a preparation method and application thereof.The preparation method comprises the following steps that in the protective gas atmosphere, in a solvent, SF5Cl serves as a pentafluorosulfenyl source, an olefin compound serves as a reaction substrate and a free radical trapping agent, a thiol compound serves as a hydrogen source, and the alkyl pentafluorosulfenyl compound is obtained through a one-step reaction; under the action of an olefin additive, the alkyl pentafluorothio compound is constructed by a one-step method through a visible light-induced free radical process, and the olefin additive is used for inhibiting generation of a pentafluorothio chloride byproduct from a pentafluorothio source and an olefin compound. According to the method disclosed by the invention, a series of alkyl pentafluorosulfenyl compounds can be prepared by only needing olefin double bonds in substrates and selecting more substrates through the reaction, the reaction is simple, the reaction condition is mild, the reaction can be completed under visible light, the reaction time is short, the implementation is easy, and the method is suitable for industrial production. And a method support is provided for further screening the alkyl pentafluorosulfenyl compound with excellent biological activity.

The invention discloses an organic silicon cooling liquid and a preparation method thereof, the chemical structural formula of the organic silicon cooling liquid is shown in the following formula (1), (2), (3) or (4), and the organic silicon cooling liquid is prepared by mixing micro-molecular siloxane containing methoxy or ethyoxyl and a single silicon hydrogen reagent containing long-chain alkyl in a solvent and carrying out condensation reaction under the action of a catalyst. Experimental results show that compared with existing organic silicon cooling liquid, the organic silicon cooling liquid has excellent thermal stability, the overall performance of the organic silicon cooling liquid cannot be affected by low polymers or high polymers generated in the reaction process, and the organic silicon cooling liquid has good repeatability in production; the organic silicon cooling liquid has an exact molecular structure, is a single compound, and can be applied to liquid cooling in the fields of data centers and the like, so that the application range of organic silicon molecules with exact structures is expanded; in addition, the preparation method of the organic silicon cooling liquid is simple in post-treatment and relatively low in energy consumption, so that the organic silicon cooling liquid has a wide application prospect.

The invention provides a carbazole ring-containing compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The carbazole ring-containing compound provided by the invention has relatively high glass transition temperature and molecular thermal stability, and has a proper HOMO energy level, so that the distribution of electrons and holes in a luminescent layer is more balanced, and the recombination efficiency of excitons in the luminescent layer is improved; when the compound is applied to a light-emitting layer of an organic light-emitting device, the light-emitting efficiency and the service life of the device can be effectively improved. Meanwhile, the preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

The invention relates to a boron-containing resonance type organic compound and an organic electroluminescent device containing the same, and belongs to the technical field of semiconductors. The structure of the boron-containing resonance type organic compound is shown as a general formula (1). When the boron-containing resonance type organic compound disclosed by the invention is used as a doping material in a luminescent layer material of an organic electroluminescent device, the boron-containing resonance type organic compound disclosed by the general formula (1) can be used as a luminescent layer green light doping material of the organic electroluminescent device; the efficiency of the organic light-emitting device is improved, and the high-temperature service life is remarkably prolonged.

The invention discloses an electrolyte additive and an electrolyte for improving the high temperature performance of a lithium battery, the high temperature performance of the lithium battery is improved through combined use of a first additive and a second additive, the first additive can effectively form a solid electrolyte membrane containing S and F components on the surface of a positive electrode, and the second additive can effectively form a solid electrolyte membrane containing S and F components on the surface of a negative electrode; the electrolyte membrane can effectively prevent the oxidation side reaction of the electrolyte on the surface of the positive electrode and inhibit high-temperature gas expansion; the molecular structure of the second additive is stable, the second additive has excellent oxidation resistance, and the second additive can be complexed with transition metal atoms dissolved out from the positive electrode active material, so that the damage of transition metal ions to an SEI film on the surface of the negative electrode active material is weakened, and the high-temperature stability of the battery is greatly improved.

Disclosed herein are methods of synthesizing compounds of the formula (I) wherein the variables are defined herein. Also provided are compounds produced using these methods. In some aspects, the methods provided herein may be used to install aryl bioisosteres.

The invention discloses a light-emitting auxiliary material, a preparation method thereof and an organic electroluminescent device, and relates to the technical field of organic photoelectric materials. According to the light-emitting auxiliary material disclosed by the invention, on the basis of a 9-phenylfluorene derivative group, triarylamine is connected to phenyl, and meanwhile, deuterium-substituted aromatic rings are connected to the triarylamine, so that the energy level can be effectively reduced, carrier migration localization can be avoided, and a hole transport energy barrier can be reduced, thereby increasing the migration rate and improving the light-emitting efficiency; triarylamine has excellent hole transport performance, a triarylamine material is used as a light-emitting auxiliary layer, a group with a high triplet state energy level is introduced, the energy range between energy levels can be reduced, and the service life of the device is greatly prolonged.

The present application relates to photostabilized or “self-healing” dyes that are constructed by attaching an azoaryl unit to a parent dye such that its optical properties are improved, particularly its optical properties that are most relevant in highly-demanding imaging, including instant brightness, signal stability, photon budget, and rate of detecting localisations. Therefore the compounds of the invention can be useful for high-performance imaging, e.g. delivering higher spatial and temporal resolution, within a shorter experimental acquisition time, and with more confidence, whether in oxygen-free conditions or in aerated conditions.

The invention relates to a synthesis method of functionalized (poly) silazane, which comprises the following steps: providing heat energy or light energy under the action of an iron catalyst, and completely reacting in a corresponding solvent in the presence of an additive and a functionalization reagent to realize the breakage and functionalization of carbon-hydrogen bonds on a chain in the (poly) silazane compound so as to obtain a polar functionalized product; a (poly) silalkane (oxo) compound; according to the method, commercialized silane, siloxane and polysiloxane compounds are directly used as raw materials, carbon-hydrogen bond functionalization is carried out in a catalytic mode, the method has the advantages of being simple in reaction, easy to operate, short in reaction time, mild in reaction condition, high in reaction efficiency, easy in product separation and purification, good in substrate universality and the like, and a large amount of precious metal and heavy metal salt are prevented from being used; the method is suitable for industrial production in the fields of small molecule synthesis, polymer modification, new material synthesis, luminous silica gel, waste silica gel recovery and the like.

The invention discloses a single-phase immersed modified organosiloxane cooling liquid. The general formula of the single-phase immersed modified organosiloxane cooling liquid is as follows: R1 (CH3) 2SiO-[(CH3) 2SiO] n (CH3) 2SiR2, wherein n is equal to 1-20, and R1 and R2 are alkyl groups of 8-16. The invention also discloses a preparation method of the single-phase immersed modified organosiloxane cooling liquid, which comprises the following steps: under nitrogen purging and at 20-30 DEG C, uniformly mixing olefin and a catalyst, heating to 35-45 DEG C, dropwise adding hydrogen-containing siloxane, and controlling the temperature of the reaction liquid within the range of 60-150 DEG C; after adding, continuously stirring; and cooling after the reaction is finished, and removing residual olefin to obtain a final product. The prepared single-phase immersion type modified organosiloxane cooling liquid has the performance of high flash point and low viscosity, is low in surface tension, good in fluidity, more comprehensive in coverage, better in heat dissipation effect, good in compatibility with materials of a data center, free of swelling and other damage with related materials and high in safety and long-term effectiveness.

The invention discloses a multistage separation method of oil in dimethyl dichlorosilane hydrolysis byproduct acid, which is used for removing organic oil impurities in dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid, and comprises the following steps: S1, static pre-separation: introducing the dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid to be treated into a static settling tank; most easily separated oil drops in the byproduct hydrochloric acid are removed; s2, introducing the byproduct hydrochloric acid treated in the step S1 into a high-shear device, adding a polymer demulsifier, and stirring to promote oil drop coalescence; s3, deeply filtering the demulsified acid liquor by adopting a strong acid-resistant, temperature-resistant and anti-pollution ceramic membrane, and intercepting fine oil drops; and S4, introducing the byproduct hydrochloric acid filtered in the S3 into an activated carbon adsorption column, and adsorbing residual trace soluble organic matters and pigments. Compared with the prior art, the multi-stage separation method for the oil in the dimethyl dichlorosilane hydrolysis byproduct acid has the advantages of being convenient to operate and use, efficient, low in cost and environmentally friendly.