104 results about "Diethylzinc" patented technology

The invention relates to a method of growing a ZnS:Mn phosphor layer suitable for use in thin-film electroluminescent components. According to the method, the ZnS:Mn phosphor layer is grown on a substrate by means of the ALE method using volatile zinc, sulfur and manganese compounds as the precursors. According to the invention, an organozinc compound such as diethylzinc or dimethylzinc is used as precursor for zinc, hydrogen sulfide or an organosulfur compound is used as precursor for sulfur, and an organomanganese compound or organic manganese complex compound is used as precursor for manganese. The invention provides a display component with drive-voltage-symmetrical light emission and stable characteristics of luminance level and turn-on voltage.

The triethylaluminum contained as an impurity in low-purity raw-material diethylzinc, which is inexpensive, is utilized as an additive to reduce the cost of film formation.

Diethylzinc having a low purity (99.99-98% or 99.99-90%) is used as a raw material to produce a ZnO transparent conductive film by the MOCVD (metal-organic chemical vapor deposition) method. Water vapor (H₂O) is used as an oxidizing agent and the triethylaluminum contained as an impurity in the raw material is utilized as an additive (diborane is further added as an additive) to cause the diethylzinc, the water vapor (H₂O), and the triethylaluminum (and the diborane) to undergo a vapor-phase reaction to produce a ZnO transparent conductive film.

The invention discloses a method for preparing a chiral cylopropyl acetenyl tertiary alcohol compound.The steps of the method are as follows: (a) cylopropyl ethylnen or other derivatives react with a chiral induction reagent, a chirality auxiliary reagent and zinc halide in an organic solvent under the action of an alkaline reagent so as to obtain a zinc complex; (b) addition reaction is carried out between the obtained zinc complex and 5-chlorin-2-amino trifluoro-benzophenone; (c) (S)-2-amino-5-chlorin-alpha-cylopropyl ethylnen-alpha-benzyl alcohol trifluoride is collected from reaction liquid. Compared with butyl lithium and diethylzinc, the alkaline reagent adopted in the invention is safer; in addition, the cheap zinc halide is used as a ligand, which greatly reduces the cost. Therefore, the method is suitable for industrial production.

The invention relates to a ZnO:B film grown by utilizing an MOCVD (Metal Organic Chemical Vapor Deposition) gradient doping technology. By utilizing the MOCVD technology, using a glass base sheet as a substrate, using diethylzinc and water as raw materials and using borane as doping gas, a ZnO transparent conducting film without doping B or doping less B grows on the glass base sheet; then, ZnO grows by sectional gradient doping on the basis of the film by utilizing the MOCVD technology as well to prepare the glass base sheet/undoped B or low B doped ZnO/normal B doped ZnO transparent conducting film. The invention has the advantage of realizing the ZnO film with large grain size and high visible light and near-infrared transmissivity by growing undoped or low B doped ZnO film at the initial period and then adopting doping under the normal condition. The film is suitable for being applied to a p-i-n type Si-based film solar cell, especially an a-Si/muc-Si laminated film solar cell andcan further improve the performance of an Si film cell.

The invention provides a preparation method of a zinc oxide doped titanium oxide film for photocatalysis. The preparation method comprises the following steps of: heating to 100-200 DEG C in the rough vacuum of below 20PMa, and cleaning a reaction cavity; cleaning a substrate, drying the substrate, introducing a precursor tetrakis (dimethylamino)titanium to the reaction cavity to pulse for 3 seconds, and cleaning; pulsing steam, and cleaning the steam to finish one cycle of titanium oxide deposition; introducing a precursor diethyl zinc to pulse for 2 seconds, and cleaning; introducing the steam to pulse for 4 seconds, and cleaning to finish one cycle of zinc oxide deposition; and forming a large cycle by a plurality of cycles of the titanium oxide deposition and one cycle of the zinc oxide deposition, and annealing at the temperature of 450 DEG C for 2 hours after a plurality of large cycles are finished, i.e., the zinc oxide doped titanium oxide film deposition process is finished. The film is precise and adjustable in thickness and component and excellent in optical transmittance and photocatalysis efficiency.

The invention relates to a method for obtaining polylactide polyol by a way of ring-opening polymerization of lactide with lactide and a polyol as direct raw materials. The method includes the following steps: A, lactide purification: a crude product lactide is purified, and lactide with the content of more than 99.5% and the optical purity of more than 99% is obtained; B, synthesis of polylactide polyol: the purified lactide and the polyol are added into a reaction kettle, then a catalyst is added according to a lactide weight ratio of 0.5/1000-1/1000 into the reaction kettle for polymerization, and polylactide polyol with the viscosity average molecular weight of 100-5000 is obtained, wherein the catalyst is a composite catalyst comprising one or more of zinc lactate, zinc oxide, zinc powder, diethyl zinc, tin lactate, tin oxide, tin dioxide, stannous oxide, stannous lactate, stannous octoate, stannous chloride, tin powder, propionic acid or tetrabutyl titanate. The method has simple process and easy operation, is suitable for industrialized production applications, and has no 'three wastes' emissions.

The invention relates to a preparation method of a high-purity ZnO/BiVO4 heterogeneous micro-ribbon, and belongs to the technical field of the micro-ribbon. The preparation method includes steps of dissolving polyvinylpyrrolidone, bismuth nitrate pentahydrate, bis(acetylacetone) vanadium oxide and diisopropyl azodicarboxylate in a mixed solvent; stirring and mixing under a room temperature to form a precursor spinning fluid; performing electrostatic spinning on the precursor spinning fluid to obtain a solid precursor micro-ribbon; placing the solid precursor micro-ribbon in an atomic layer deposition system; reacting with water by diethylzinc; after circulation, depositing ZnO on the surface of the precursor micro-ribbon; performing high-temperature calcination on the precursor micro-ribbon coated with ZnO to obtain the ZnO/BiVO4 heterogeneous micro-ribbon material. Compared with the prior art, the method uses diethylzinc to strongly react with water and generate ZnO; through changing the circulation frequency in the atomic layer deposition system, the structure and component of the ZnO/BiVO4 heterogeneous micro-ribbon are effectively controlled.

The invention relates to a ternary polymerization catalyst of norbornene, octafluorocyclopentene and styrene and a ternary polymerization method, wherein the catalyst is prepared through a following method comprising steps of: 1) dissolving neodymium trichloride, diethyl zinc and a ligand compound in a first solvent in a dried single-mouth glass bottle under an inert gas atmosphere; 2) sealing the mouth of the bottle by a latex pipe, performing a reaction at a constant temperature of 40-60 DEG C for 20-30 min to prepare a neodymium/zinc complex catalyst; 3) according to a ratio of 1:1:1, adding a norbornene monomer, an octafluorocyclopentene monomer and a styrene monomer into a high-pressure kettle which is vacuumized for several times and is filled with nitrogen, and adding a second solvent to dissolve the raw materials; 4) adding the neodymium/zinc complex catalyst, and carrying out a reaction at 20-90 DEG C for 0.1-6 MPa for 1-6 h; and 5) washing a reaction product to obtain a terpolymer. The raw materials of the catalyst are low in cost and are easy to obtain. The catalyst can generate catalytic activity at a low temperature and is high in catalytic efficiency. A product is very easy to wash and separate and the method is high in yield of the co-polymer.

The invention provides a preparation method for an ethylene-series random copolymer. The preparation method comprises the following steps: subjecting a reaction vessel to waterless oxygen-free treatment with nitrogen in a vacuum state, then adding a solvent, ethylene, alpha-olefin, unconjugated diene and a molecular weight regulator, and carrying out uniform mixing under stirring; adding a main catalyst, a cocatalyst and an activator for polymerization; adding ethanol to terminate polymerization and then adding an antioxidant; subjecting a glue solution obtained in the previous step to desolventization, and separating glue so as to obtain the product ethylene-series random copolymer; and drying the product so as to obtain dry glue, wherein the dry glue contains 0.8 to 1 wt% of the antioxidant; the main catalyst is alcohol-modified vanadium oxytrichloride; the cocatalyst is a mixture of aluminum diethyl monochloride and triethyldialuminum trichloride; the molecular weight regulator is diethyl zinc or hydrogen; the solvent is aliphatic alkane, cycloalkane or an aromatic compound; the activator is ethyl trichloroacetate; and the antioxidant is 2,6-di-t-butyl-p-cresol.

The invention relates to a norbornene, vinyl ethyl ether and perfluoromethyl vinyl ether ternary copolymerized catalyst and a ternary copolymerizing method. The preparation method of the catalyst comprises the following steps: dissolving bis(cyclopentadiene) vanadium and ligand in a first solvent in a dried container at an inert gas atmosphere to obtain a mixed solution; dripping diethyl zinc into the mixed solution, and stirring for 30-60 minutes at 30-60 DEG C after dripping to obtain a vanadium-zinc complex catalyst; adding norbornene, vinyl ethyl ether and perfluoromethyl vinyl ether into an autoclave which is vacuumized for multiple times and inflated with nitrogen, adding a second solvent and dissolving; adding the vanadium-zinc complex catalyst, and reacting for 1-6 hours at certain temperature and pressure; and pouring the product obtain in reaction into a hydrochloric acid-containing alcohol solution, washing the precipitate to be neutral with alcohol, and drying in vacuum to obtain the norbornene, vinyl ethyl ether and perfluoromethyl vinyl ether ternary copolymerized catalyst.

The invention provides an aminopyrrole zinc-lithium bimetallic catalyst, relates to lactide ring-opening polymerization, in particular to a zinc-lithium bimetallic catalyst by taking 2-tert-butyl-aminomethylpyrrole as a ligand. A preparation method of the catalyst comprises the following steps: under protection of an inert gas and a condition of cold-water bath, using n-butyllithium to conduct lithiation on the aminopyrrole ligand, sequentially dropping diethyl zinc and TMEDA (Tetramethylethylenediamine) with equivalent amount in the obtained solution, after the reaction, filtering the reactant, carrying out vacuum concentration on the filtrate, and at last separating out colorless and transparent crystals. The preparation method of the catalyst is simple, convenient, easy to get the raw materials, mild in the reaction conditions; the obtained catalyst is of a higher catalytic activity on the lactide ring opening polymerization; the obtained polylactic acid is uniform in distribution of molecular weight, so that the catalyst is of a good application prospect.

The invention relates to a norbornene, styrene and maleic anhydride ternary polymerization catalyst and a ternary polymerization method. The norbornene, styrene and maleic anhydride ternary polymerization catalyst is characterized in that a preparation method of the catalyst comprises the steps of dissolving rhodium chloride, iethylzinc and a ligand compound into a first solvent in a single-neck glass bottle with a dry inert atmosphere, sealing the bottleneck, and keeping the constant temperature of 40-50 DEG C for 15-30 minutes to obtain a rhodium-zinc complex catalyst. The ternary polymerization method comprises the steps of adding norbornene monomers, styrenes and maleic anhydride monomers into the multiply vacuumized and dried single-neck glass bottle with the dry inert atmosphere according to the molar ratio of 1:1:1, and then, adding a second solvent to dissolve; and then, adding the rhodium-zinc complex catalyst, and reacting at the temperature of 20-90 DEG C for 1-8 hours. The catalyst provided by the invention is cheap and available in raw materials, capable of generating catalytic activity at a relatively low temperature, low in polymerization reaction temperature and high in catalytic efficiency; and in addition, the catalyst is easily washed and separated, and the yield of copolymers is high.

The invention belongs to the field of piezoelectric thin-film materials, and particularly relates to a preparation method of a surface acoustic wave filter in an AlN/GAZO/self-supporting diamond film structure. The method comprises the following steps: cleaning a self-supporting diamond film used as a substrate, sending the self-supporting diamond film into a vapor deposition reaction chamber, introducing nitrogen gas, trimethyl aluminum, trimethyl gallium and diethyl zinc into the reaction chamber to deposit a GAZO film with the thickness of 80-120nm on the substrate, introducing trimethyl aluminum to deposit an AlN thin film with the thickness of 800nm on the substrate carrying the GAZO film, cooling the inside of the vapor deposition reaction chamber to room temperature, and opening the deposition chamber to obtain the surface acoustic wave filter in an AlN/GAZO/self-supporting diamond film structure. The method provided by the invention is simple, the technique is easy to control, and the prepared piezoelectric thin-film device has the advantages of favorable uniformity and excellent acoustic speed transmission performance and can be used for manufacturing high-power high-frequency surface acoustic wave filters.

The invention discloses a preparation method of a texture structure ZnO thin film on a glass substrate. In the preparation method, by taking diethyl zinc and water as raw materials and taking borane (B2H6) as a doping gas, a texture structure Zno-TCO thin film is grown on the glass substrate by adopting a metal organic chemical vapor deposition method and using two specific steps of: firstly, growing a layer of a pyramid-like-shaped structure ZnO thin film with a large crystal grain size on the glass substrate; and secondly, growing a layer of round-ball-shaped ZnO thin film with a small crystal grain size on the ZnO thin film. The texture structure ZnO thin film on the glass substrate is used for a pin-type microcrystallite silicon thin film solar cell or an amorphous silicon/microcrystallite silicon laminated thin film solar cell. The preparation method has the advantages of simple process and convenience in large-area production and popularization; and by adopting a two-step method growing technology compatible with a process technique, light scattering of visible light and near-infrared region and the subsequent deposition of a silicon-based thin film are facilitated to realize and the photoelectric conversion efficiency of the solar cell can be effectively improved.

The invention provides a suede-structured ZnO film prepared by an alternative growth technology. A suede-structured ZnO-TCO (transparent conductive oxide) film is alternatively grown on a glass substrate by a metal organic chemical vapor deposition method based on diethylzinc and water as source materials and hydrogen used for diluting and doping a gas borane B2H6. The steps are as follows: 1) firstly, growing a layer of undoped ZnO film on the glass substrate; 2), then growing a B-doped type ZnO film on the undoped ZnO film; and 3) repeating the steps 1) and 2), so as to obtain a multi-layer overlapping-grown ZnO film. The suede-structured ZnO film has the advantages that the direct growth of the suede-structured ZnO film on the glass substrate can be realized by using an MOCVD (metal oxide chemical vapor deposition) technology; the preparation method has simple process, and is convenient for large-area production and popularization; through the alternative growth technology compatible to the process technology, the light scattering of visible light and neat infrared regions and subsequent deposition of a silicon-based film are facilitated; and the suede-structured ZnO film can be applied to a film solar battery, thereby effectively improving the photoelectric conversion efficiency.

The invention belongs to the field of the synthesis of anti-hepatitis C virus medicines by using medical intermediates, and particularly relates to an asymmetric synthesis method of a medical intermediate 2-azabicyclo [3. 1. 0] hexane-2, 3-tert-butyl dicarbonate. The asymmetric synthesis method is mainly characterized in that (2R) or (2S)-1, 2-tert-butyl dicarbonate-2, 3-pyrrole alkene is used as a raw material, methylbenzene, benzene or trihalomethylbenzene is used as a solvent, diiodomethane, chlorobromomethane, dibromomethane or diethylzinc is used as a cyclopropanation reagent, and after reaction, the compound 2-azabicyclo [3. 1. 0] hexane-2, 3-tert-butyl dicarbonate is obtained. The asymmetric synthesis method has the advantages that synthesis steps are simple, the yield is high, the cost is low, the cyclopropanation reagent is wide in selectivity, the synthesis process is simple, convenient and practical, and the like.

The invention discloses a catalyst for catalyzing chain shuttle polymerization of ethylene and application thereof. The catalyst mainly comprises a main catalyst, a cocatalyst and a chain shuttle agent, wherein the main catalyst agent is a loaded bis(imino)pyridyl iron complex; the cocatalyst is modified methylaluminoxane; the chain shuttle agent is diethylzinc; the bis(imino)pyridyl iron complexis prepared by loading the bis(imino)pyridyl iron complex onto a modified magnesium chloride carrier; in the loaded catalyst, the molar ratio of the cocatalyst to the bis(imino)pyridyl iron complex is (100-500):1; and the molar ratio of the chain shuttle agent to the bis(imino)pyridyl iron complex is (300-800):1. When the catalyst is applied to an ethylene chain shuttle polymerization reaction, the polymerization reaction temperature can be remarkably increased, high activity is kept at the temperature 50-70 DEG C, the molecular weight of a polyethylene product is increased, and ethylene and terminal group-functionalized ethylene with narrow molecular weight distribution can be obtained.

The invention relates to a chiral linking naphthol siloxane derivative connected by the 6, 6-propylamine amide methyl and the preparation method. The invention is characterized in the structural formula; therein, R is chosen from the - CH2OCH3,-CH3, -C12H25 or - C16H33. After the later graft or copolycondensation to be loaded on the mesoporous silicon dioxide, the chiral linking naphthol siloxane derivative provided in the invention can be used in a plurality of catalytic reactions, such as the asymmetric synthetic reaction of the diethyl zinc and the benzaldehyde, the asymmetric Baylis-Hillman reaction, and so on. Therein, the linking naphthol siloxane derivative protected by the methoxy methyl can be used to prepare the mesoporous material after the copolycondensation or the later graft to protect the easy doffing of the base groups, and can be directly used in the catalytic reaction; the linking naphthol siloxane derivative protected by the long-chain alkyl can be used as the siloxane modifying reagent and the surfactant at the same time to prepare the complex mesoporous material. In the synthesis method of the chiral linking naphthol siloxane derivative, the raw materials are easy to access; the synthesis process is simple and easy.

The invention belongs to the technical field of semiconductor integrated circuit manufacturing, and particularly relates to a method for preparing an ultra-thin copper seed crystal layer on a diffusion barrier layer and an application thereof. According to the method, an atomic layer deposition method is used for preparing the ultra-thin copper seed crystal layer, and the method includes the following steps that Cu (C5HF6O2)2 is adsorbed on the diffusion barrier layer, and the air flow is 100-500 standard milliliter per minute; diethylzinc is adsorbed on the diffusion barrier layer, and the air flow is 100-500 standard milliliter per minute. The method has the advantages that the ALD method is adopted for growing the copper seed crystal layer, under a lower process temperature, only a film with the thickness about 0.02-1nm is formed in each growth cycle, the thickness of the copper seed crystal layer can be effectively controlled, the groove filling performance is good, the adhesion property of electroplated copper and the copper seed crystal layer is improved, the reliability of the method in the integrated circuit copper interconnection application is maintained, and the method provides an ideal interconnection technology solution to technology nodes with the thickness below 22nm.

A process for preparing diethyl zinc includes such steps as activating and drying Zn powder, adding it along with cuporous iodide and a quarter of the mixture of iodoethane and bromoethane into reactor, adding finished diethyl zinc as trigger, heating, adding rest of said mixture, heating, stirring while reacting, vacuum distilling and collecting product at a temp lower than -35 deg.C.

The invention discloses a ternary catalyst for preparing fatty group polycarbonate, comprising three components of boron hydrogenation rare earth, zinc alkyls and glycerol, wherein the structure of the boron hydrogenation rare earth is M(BH4)3, and M is one of rare earth elements of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb and Lu; the zinc alkyls is diethyl zinc, zinc n-propyl, zinc isopropyl, zinc normal-butyl, zinc isobutyl or zinc benzyl. The ternary catalyst has easy acquirement of raw materials, simple preparation method and low cost, the fatty group polycarbonate with the number-average molecular weight exceeding 16000 and the weight-average molecular weight exceeding 45000 can be prepared, and the carbon dioxide fixation rate exceeds 36%.