73results about How to "Yi Shenghua" patented technology

The invention discloses a preparation method of porous nano CuFe2O4. The preparation method includes the steps that iron salt, copper salt and deionized water are mixed, stirring and dissolving are conducted, and a mixed solution of the iron salt and the copper salt is obtained, alkali and deionized water are mixed, stirring and dissolving are conducted, and aqueous alkali is obtained; under stirring, the mixed solution of the iron salt and the copper salt is dropwise added to the aqueous alkali, a stirring reaction continues after the mixed solution is dropwise added till the reaction is complete, a product is washed and eccentrically washed, and CuFe2O4 sol is obtained; after the CuFe2O4 sol is mixed with deionized water, ultrasonic dispersion is conducted, an organic solvent and a sublimable compound template are added, a reaction is conducted through a water-organic solvent mixed solvothermal method, and after the mixed solvent of the product is removed through distillation, the porous nano CuFe2O4 powder is obtained through the technological processes of calcining, cooling, grinding, washing, filtering, drying and grinding. The method is simple and feasible in process, low in investment and beneficial for application and popularization.

The invention discloses a preparation method of porous nano-scale BiFeO3. According to the method, an iron salt, a bismuth salt and an acid are mixed with deionized water; the mixture is stirred until the materials are dissolved, such that a mixed solution of the iron salt, the bismuth salt and the acid is obtained; an alkali is mixed with deionized water and is dissolved by stirring, such that an alkali solution is obtained; under stirring, the mixed solution of the iron salt, the bismuth salt and the acid is added dropwise into the alkali solution, such that a reaction is carried out; a reaction product is subjected to washing and centrifugal separation, such that BiFeO3 sol is obtained; the BiFeO3 sol is mixed with deionized water; ultrasonic dispersion is carried out; an organic solvent and a sublimable compound as a template are added; a solvothermal reaction is carried out in a water-organic solvent mixed solvent; the product is subjected to distillation, such that the mixed solvent is removed; and roasting, cooling, grinding, washing, filtering, drying and grinding processes are carried out, such that porous nano-scale BiFeO3 powder is obtained. The method has the advantages of simple and feasible process, and low investment. The method is suitable for popularization and application.

The invention discloses a light-emitting metal iridium complex and an organic electroluminescence device prepared from the same. The light-emitting metal iridium complex is characterized in that the structure of the complex is as shown in a formula (1) in the specification, in the formula (1), Ar is an aromatic pentabasic ring or hexahydric ring; n is 1 to 2; X is fluorine-containing alkyl of which the carbon atoms are less than 12 and comprises CF3, CF2CF3, CH2CF3, CF2CF2CF3, CH2CF2CF3, CF(CF3)2, CH(CF3)2, CF2CF(CF3)2, CH2CF(CF3)2; p is a substituted integer of 1-4; L is bidentate coupled light-emitting ligand containing N atoms.

An organic electroluminescent package is composed of substrate, anode, cathode, hole transmission layer, electron transmission layer and a luminescent layer consisting of primary and secondary luminescent bodies.

The invention discloses a vacuum evaporation process of a high-brightness transparent light reflecting film. A plated plant base film is mounted in an evaporation chamber, then a cooling roller carries out low-temperature cooling, molybdenum boats where evaporation targets are arranged are put into an evaporation tank, it is guaranteed that the distance between each evaporation target and the bottom end of a center main drum is the same, after a cover plate is closed, the evaporation tank is fed into the evaporation chamber, and the evaporation chamber is vacuumized; the evaporation targets are heated to the melting point and are vaporized, the cover plate of the evaporation tank is opened, the plated plant base film is controlled to move in the evaporation chamber at a constant speed, andstep-by-step evaporation operation is carried out; and equipment is shut down after evaporation is completed. According to the vacuum evaporation process of the high-brightness transparent light reflecting film, the light reflecting brightness of the finally-obtained light reflecting film is far higher than that of a common transparent light reflecting film, a good light reflecting effect is achieved, the surface is light, thin and transparent, the vacuum evaporation process is suitable for later deep processing treatment, and meanwhile a metal film is firm and not prone to falling off.

The invention belongs to the field of photoelectric materials, and discloses a non-aromatic amine small molecule photoelectric material and preparation and application thereof. The non-aromatic aminesmall molecule photovoltaic material has a structural formula as shown in the formula (I). In the formula, R1 is selected from H or -CH3; and R1, R2, R3, and R4 are independently selected from S or O.The non-aromatic amine small molecule photoelectric material of the invention has good hole transport ability, can be applied to a hole transport layer of an organic photoelectric device, and can also be combined with a common electron transport type material to generate an exciplex for luminescence, exhibits high fluorescence quantum yield and exhibits the property of thermally activated delayedfluorescence.

The present invention is one kind of metal complex capable of being used as the dopant in the light emitting layer of organic electroluminescent display device or the electron barrier between the light emitting layer and the hole transmitting layer. The chemical expression of the metal complex is shown.

The invention relates to a preparation method of a poly[2, 5-dyhydroxy-1, 4-phenylene pyridine diimidazole] polymer. The preparation method comprises two steps of prepolymerization reaction and post-polycondensation reaction. The reaction time of a prepolymer in a double-screw extruder is 10-60 minutes, and the double-screw extruder is provided with three temperature zones according to a sequence from a feeding port to a discharging port, wherein the temperatures of the tree temperature zones are respectively 160-180 DEG C, 180-190 DEG C and 190-200 DEG C. According to the preparation method, the double-screw extruder is used for carrying out the post-polycondensation reaction, and specific temperature and time are used for controlling parameters, so that the intrinsic viscosity [eta] of the PIPD polymer obtained in the end is 28-30dL/g, the molecular weight of the polymer is greatly increased, meanwhile, the stirring is facilitated, and the PIPD polymer can be easily conveyed and transferred to a spinning working section, thus the production efficiency is improved, and the production cost is reduced.

The invention belongs to the technical field of organic photoelectric materials, and discloses a preparation method and an application of a 4,4'-substituted benzil core-based luminescence and host material. The luminescent material is prepared through a Buchwald-Hartwig coupling reaction from 4,4'-dibromobenzil as an initial reaction raw material under the protection of nitrogen. The luminescent material adopts 4,4'-substituted benzil as a host structure, and the connection mode of a donor is changed to adjust the molecular weight, the pi conjugacy and eletrophilicity, the charge transfer ability and the photochromism of the material and effectively solve the carrier imbalance problem of unipolar luminescent materials. The material can be used in organic light-emitting diodes to greatly improve the external quantum efficiency of traditional fluorescent organic light-emitting diode devices.

The invention discloses a biceptor organic luminescence small molecule material. Carbonyl is connected with sulfuryl by a benzene ring to form a novel receptor framework unit; one benzene ring is connected to each of two sides of the novel receptor framework unit so as to add reactive sites. The invention also discloses a preparation method and application of the biceptor organic luminescence small molecule material. The luminescence material connected with a receptor can realize a transfer effect of intramolecular charges; with a bipolar transmission characteristic of the luminescence material, the unbalance of a unipolar luminescent material charge carrier is reduced, and the structure of a device is simplified and the performance of the device is improved. The biceptor organic luminescence small molecule material disclosed by the invention is simple in preparation; various target products are obtained by a series of simple reactions. The material has the advantages of determined molecular weight, single structure, high decomposition temperature and lower sublimation temperature, and can be applied to an organic light-emitting diode.

The invention discloses a preparation method of compound salvia tablets. The preparation method is characterized by comprising the following process steps: (1) putting 450g of salvia into an extraction tank, adding 95% ethanol of which the weight is 4-6 times that of the salvia for soaking for 4-6 hours, performing continuous countercurrent extraction for 1-1.5 hours, filtering the extracting solution, recovering the ethanol from the filtrate, and concentrating the ethanol to an appropriate amount for later use; adding 50% ethanol of which the weight is 3-5 times that of dregs of a decoction into the dregs, performing continuous countercurrent extraction for 1-1.5 hours, filtering the extracting solution, recovering the ethanol from the filtrate, and performing vacuum concentration on the ethanol to an appropriate amount for later use; adding water of which the weight is 3-5 times that of dregs of the decoction into the dregs, performing countercurrent extraction for 1-1.5 hours, filtering the extracting solution, recovering the ethanol from the filtrate, and performing vacuum concentration on the ethanol to an appropriate amount for later use; (2) mixing 141g of notoginseng ultrafine micropowder with a concentrated solution prepared in the step 3, adding an appropriate amount of an auxiliary material, pelletizing through a pelletizing machine, and drying for later use, wherein the percentage is mass percentage; (3) uniformly mixing 8g of borneol ultrafine micropowder with the particles prepared in the step 4, tabletting and coating sugarcoats or film-coats to obtain the compound salvia tablets. The preparation method disclosed by the invention can ensure that active ingredients of the salvia can be extracted out to the utmost extent, and the notoginseng and borneol can give play to drug effects more quickly.

The invention discloses a self-host organic light-emitting small molecule material connected with a sulfur-containing non-conjugated unit by a carbonyl group, and increasing reaction sites by connecting benzene rings on two sides separately. The invention further discloses a preparation method and application of the self-host organic light-emitting small molecule material. The self-host organic light-emitting small molecule material disclosed by the invention realizes the intramolecular charge transfer function, and the sulfur-containing non-conjugate unit owned by the self-host organic light-emitting small molecule material can act as a part of a host to show high device performances in a simplified device structure. The self-host organic light-emitting small molecule material disclosed by the invention is simple in preparation method, and various target products are obtained through a series of simple reactions. Furthermore, the material disclosed by the invention is determined in molecular weight, single in structure, very high in decomposition temperature and lower in sublimation temperature, thereby being easily sublimated into a high-purity light-emitting material.

The invention belongs to the technical field of cosmetics, and relates to compound ligustrazine ferulate whitening cream and a preparation method and application thereof. In the whitening cream of the invention, plant extracts capable of effectively inhibiting tyrosinase activity, namely ferulic acid and ligustrazine, are served as a whitening agent in preparing the cosmetics. The raw material composition of the moisturizing and whitening cream taking the ferulic acid and the ligustrazine as the whitening agent consists of the following raw materials: emulsifier, grease, TranscutolP, hyaluronic acid, glycerol, the ferulic acid, the ligustrazine, thickener, antiseptic and water. The preparation method comprises the following steps: mixing the emulsifier, the grease, enhancer with the ferulic acid, and melting the mixture through water bath at temperature of 80 DEG C to obtain an oil phase A; dissolving moisturizer, the ligustrazine and the antiantiseptic in the water through hot water bath to obtain a water phase B; adding solution A into solution B, and homogenizing to obtain solution C; and adding the thickener into the solution C after the solution C is cooled to room temperature, and stirring to obtain the whitening cream.

The invention discloses an improved type evaporation groove of a rainbow film electroplating technology. The improved type evaporation groove of the rainbow film electroplating technology comprises anevaporation groove and a cover plate covering the top end of the evaporation groove. Two rows of first copper column electrodes and second copper column electrodes are fixedly installed uniformly ina spaced manner on the two side walls inside the evaporation groove. A molybdenum boat is placed between each set of first copper column electrode and second copper column electrode, and each molybdenum boat is distributed between the corresponding first copper column electrode and the corresponding second copper column electrode in a spaced manner. Electrode connecting heads are formed respectively on the two sides of each molybdenum boat. Conductive connection is conducted through placement of copper pieces between each first copper column electrode, each second copper column electrode and the corresponding electrode connecting heads. Multiple target materials are tightly arranged on each molybdenum boat correspondingly. The lower end of each molybdenum boat is also cushioned with an upper supporting cushion block and a lower supporting cushion block, and both the upper supporting cushion blocks and the lower supporting cushion blocks are insulated cushion blocks. The evaporation groove assembly provided is matched with a vacuum evaporation plating technology, and the processing technological process of the transparent reflective rainbow film can be achieved.

The invention relates to an injection preparation containing camptothecin analogue, and the injection, the preparation and the application thereof. The injection preparation comprises a solid part and a liquid part which are separately and independently packaged, wherein the solid part adopts a freeze-dried powder; the freeze-dried powder comprises an active component and one or more pharmaceutically acceptable excipients; the active component adopts the camptothecin analogue or pharmaceutically acceptable salt; the liquid part at least comprises the following components: a solubilizer and water for injection; the camptothecin analogue has the structure as shown in the specification.

An organic metal complex and the organic electroluminescent device containing said organic metal complex are disclosed.

The invention relates to application of a polymer and a photoresist containing the polymer, and belongs to the field of environment-friendly materials. According to the application of the polymer as a degradable material, the polymer contains a plurality of repetitive units, and the structural formula of each repetitive unit is shown as a formula I. The polymer is subjected to photo-oxidative degradation into an oligomer or dicarboxylic acid by placing the polymer in the presence of illumination and oxygen. According to the polymer, the molecular weight of the polymer can be greatly reduced, and the burden on the environment is reduced.

The invention provides an organic electrophosphorescent material, a preparation method and applications thereof, and an OLED device containing the organic electrophosphorescent material, wherein the organic electrophosphorescent material is a compound with a structure represented by a formula I, a formula II or a formula III, the compound with the structure represented by the formula I is a greenlight-emitting material, and the compounds with the structures represented by the formula II and the formula III are red light-emitting materials. The organic electrophosphorescent material provided by the invention is easy to sublimate and dissolve, and is beneficial to large-scale production of OLEDs; and an OLED device taking the organic electrophosphorescent material provided by the inventionas a luminescent layer object material has the advantages of high efficiency and long service life.