38results about How to "Strong rigid structure" patented technology

The invention discloses a method for preparing a diethylstilbestrol molecularly imprinted electrochemical sensor based on electropolymerization of a p-aminothiophenol film. The method comprises sequential steps such as glassy carbon electrode pretreatment, electrode modification by multi-wall carbon nanotubes, electrode modification by nano gold, functional monomer self-assembly, template molecular pre-assembly, electropolymerization of the p-aminothiophenol film, and template molecule elution, and an organic phase as a polyelectrolyte solvent improves the number and selectivity of binding sites in a polymer film, and is beneficial to formation of a stable host-guest compound from a template molecule and a function monomer, so that the template molecule can maintain a good rigid structurein a polymer network structure and form a cavity with a memory effect. The preparation method is simple and easy to control, and the sensor has strong selectivity and stability, high sensitivity and low cost. The sensor is suitable for analysis and detection of diethylstilbestrol residues in animal-derived foods, feeds and other samples.

The invention discloses a method for preparation of triazole molecularly imprinted electrochemical sensor based on an electropolymerized OPD / OAP composite membrane. The method includes glassy carbon electrode pretreatment, electropolymerization of OPD / OAP composite membrane, template molecule elution and other steps in order. According to the invention, a triazole substance is taken as the template molecule, OPD and OAP are adopted as the mixed functional monomer, the use of the composite functional monomer improves the selection performance of the binding site in a polymer film, and is conducive to forming a stable host-guest compound from a template molecule and a functional monomer, so that the template molecule can maintain a good rigid structure in a polymer network structure and form a cavity with memory effect. The preparation method is simple and easy to control, and the sensor has the advantages of strong selectivity, good stability, high sensitivity, low cost, and fast response. The invention also provides application of the sensor in adsorption of triazole substances. The sensor prepared by the method provided by the invention is suitable for analysis and detection of residual triazole pesticide in vegetables, fruits and other agricultural products.

The invention provides a photodynamic sterilization polymer as well as a preparation method and application thereof. The polymer is composed of a main chain and a side chain; the side chain is composed of a long alkyl chain with a quaternized tail end and can be combined with the surface of bacteria with negative charge to form a tight combined body, so that a bacterial membrane is transparent; the main chain is composed of benzene, fluorene and thiophene and has a relatively strong rigid structure; under a light illumination condition, the main chain is excited by light to sensitize air in the periphery to generate active oxygen, so that an efficient sterilization effect is realized. The polymer can be used as an antibacterial agent and can be used for killing gram positive bacteria and gram negative bacteria; the polymer also can be used for killing fungi and has a broad-spectrum antibacterial function. The polymer is simple to prepare and moderate to react and has relatively high yield. The polymer is used as an efficient photodynamic antibacterial material, concentration needed by sterilization is low and the light dosage is small; common white illumination can reach an efficient sterilization effect. The polymer provided by the invention emits fluorescent light in a long-wave region and also can be used for biological fluorescent imaging.

The invention relates to the field of the fuel cell, and discloses a preparation method of a carbon / polymer composite bipolar plate. The bipolar plate is composed of polystyrene resin, hydrogenated ethylene-butylene-styrene triblock copolymer, conductive filler and fiber reinforced material. The composite bipolar plate is low in air permeability, good in machining, and excellent in conductivity and corrosion resistance. The composite plate provided by the invention can be applied to a proton exchange membrane fuel cell, alkaline anion-exchange membrane fuel cell and methanol fuel cell.

The invention discloses a temperature control and magnetic screen device for a rubidium atomic frequency standard. An outer magnetic screen bottom plate is mounted on the upper surface of the temperature control bottom plate, and a magnetic screen covers the temperature control bottom plate and is fixed on the side surface of the temperature control bottom plate; a heating film is fixed below theouter temperature control bottom plate through silica gel; a thermistor is embedded into a hole of the external temperature control bottom plate; leads of the heating film and the thermistor are connected with the temperature control circuit; the heat conduction gasket is mounted between the outer temperature control bottom plate and the complete machine bottom plate through screws; and the temperature control circuit can be mounted on the temperature control bottom plate. According to the design of the device, on the premise that effective heat dissipation of the core assembly can be ensured,the stable environment temperature and the excellent magnetic shielding effect are provided for a physical system and a sensitive circuit assembly of the rubidium atomic frequency standard, so that the temperature sensitivity and the magnetic sensitivity of the rubidium atomic frequency standard are further overcome, all the assemblies are firmly installed, the anti-seismic requirement is met, and finally the long-term stability level of the rubidium atomic frequency standard can be remarkably improved.

The invention belongs to field of an electrochromic material, and particularly relates to a terpyridyl-fluorene metal hybrid polymer and an electrochromic device containing the same. The solubility of a rigid conjugate structure of a main chain can be improved by a flexible side chain group of the terpyridyl-fluorene metal hybrid polymer prepared by the invention, so that the terpyridyl-fluorene metal hybrid polymer has good solubility in common solvents such as chlorobenzene, dimethyl formamide (DMF) and the like, and can be easily processed to form a film by a solution method; meanwhile, the terpyridyl-fluorene metal hybrid polymer has the characteristics of an inorganic material, namely high heat stability by the rigid main chain structure and organic and inorganic metal complexes; terpyridyl and fluorenyl are in conjugated connection by metal ion coordination, so that electron cloud delocalization is facilitated, and the photoelectric response sensitivity is improved; the all-solid state electrochromic device prepared from the terpyridyl-fluorene metal hybrid polymer is significant in color change, and obvious in aberration, and has important application value in the field of organic electrochromism.

The invention discloses a sulfonated poly(arylene ether phosphine oxide) polymer containing phenolphthalein and a preparation method of a sulfonated poly(arylene ether phosphine oxide) polymer membrane containing phenolphthalein. The method comprises the following steps: with a sulfonated dihalogen triphenyl phosphine oxide monomer and / or a dihalogen triphenyl phosphine oxide monomer and phenolphthalein in equal molar as reaction raw materials, adding reaction raw materials, reaction solvents, a catalyst and a dehydrating agent together to a reactor, introducing protective gas, and conductingstirring, heating, dehydration and polymerization, cooling, precipitation and washing to obtain the sulfonated poly(arylene ether phosphine oxide) polymer; and dissolving the obtained sulfonated poly(arylene ether phosphine oxide) polymer, and conducting casting into a membrane to obtain the sulfonated poly(arylene ether phosphine oxide) polymer membrane containing phenolphthalein. The polymer membrane obtained by the method not only maintains high proton conductivity, but also the swelling of the polymer membrane is effectively reduced, and the comprehensive properties of the membrane are improved.

The invention provides a compound and application thereof, and an organic electroluminescent device comprising the same, the compound has a structure of formula (I), and the compound is used as a material of a luminescent layer in the organic electroluminescent device; and the organic electroluminescent device comprises a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, and the organic layer contains any one or a combination of at least two of the compounds. The compound provided by the invention can further reduce the efficiency roll-off of the device and prolong the service life of the device on the premise of ensuring proper driving voltage.

The invention relates to a ship adopting sea surface micro structure measuring device, which comprises an underwater optical device consisting of a light source and a measuring coder, and an information transmission and treating system consisting of a CCD camera and a computer. The invention is characterized in that the ship adopting sea surface micro structure measuring device further comprises a lifting device which is connected with the underwater optical device; the guide rail of the lifting device is welded and tightly leaned on a guide rail rack; a motor arranged at the upper part of the guide rail rack pulls lifting chains arranged at the two ends of the guide rail rack; the guide rail rack is connected with a base through two parallel blocking rings; the base is vertically fixed on the ship board. The measuring coder comprises glass windows arranged at the two ends of the drawtube; a Fresnel lens is close to the lower part of the glass window at the upper end; a color coding sheet is tightly leaned on the glass window at the lower end; the Fresnel lens, the color coding sheet and the Fresnel lens are on a same optical shaft. The invention is suitable for the ship voyage and operation, thereby monitoring the big size sea surface gradient field in real time with a space resolution of 0.5mm and a slope measuring precision reaching up to 0 degree or 2 degrees.

The invention discloses diamine with an antibacterial effect and a preparation method thereof. According to the invention, a two-halogen-atom-substituted xanthone monomer is grafted with an amino-containing group through the Suzuki reaction, or grafted with a nitro-containing group through the Suzuki reaction and then reduced to obtain a diamine monomer containing a xanthone structure. The xanthone structure has high electron density and a good rigid structure; and the planar rigid structure is beneficial for regular stacking of polymer molecular chains and induction of polymer crystallization, and a polymer with tightly stacked molecular chains, small free volume and high barrier property can be prepared. Meanwhile, the diamine disclosed by the invention takes the xanthone structure as acore and has good antibacterial and bacteriostatic effects, and the polymer prepared by taking the diamine as a raw material also has a certain antibacterial property.

The invention provides a compound, application thereof and an organic light-emitting device comprising the compound. The compound has a structure as shown in a formula (I), wherein carbonyl, a phosphorus atom, a phosphine oxide group, a phosphine sulfur group or a phosphine selenium group jointly serve as an acceptor group; the application of the compound is as a material of a light-emitting layerin an organic light-emitting device; the organic light-emitting device comprises a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, wherein the compound is contained in the organic layer. The compound has good electron transport capability, proper carrier mobility and low injection energy barrier, and can effectively reduce the turn-onvoltage and improve the luminous efficiency when used in organic electroluminescent devices.

The invention provides a compound, applications thereof, and an organic light-emitting device comprising the compound. The compound has a structure as shown in a formula (I), wherein carbonyl and arylboron are jointly used as acceptor groups; the application of the compound is as a material of a luminescent layer in an organic electroluminescent device; the organic electroluminescent device comprises a first electrode, a second electrode and an organic layer between the first electrode and the second electrode; the compound is contained in the organic layer. The compound has good electron transport capability, proper carrier mobility and low injection energy barrier, and can effectively reduce the turn-on voltage and improve the luminous efficiency when used in organic electroluminescentdevices.

The invention discloses an easy-to-move steel structure temporary house. The house comprises a base plate, an outer box is fixedly connected to the upper surface of the base plate, a door plate is hinged to the side surface of the outer box through hinges, and first reinforcing ribs and second reinforcing ribs are fixedly connected to the lower surface of the base plate; fixing blocks are fixedlyconnected to the side surface of the base plate, a first bearing is clamped with the upper surface of each fixing block, a first rotating shaft is inserted into each first bearing, a wheel is fixedlyconnected to one end of each first rotating shaft, and a mounting plate is fixedly connected to the lower surface of the base plate. According to the house, through the arrangement of the base plate,the fixing blocks, the first bearings, the first rotating shafts and the wheels, an integrated house is formed with the base plate as a basis; the base plate is supported by the wheels and suspended,the wheels can roll to drive the base plate to move in a small range and achieve short-distance transportation, and therefore the trouble of disassembly and recombination when the position of the house needs to be changed is avoided.

The invention discloses polyimide for an FOLED substrate and a preparation method of the polyimide. The method comprises the following steps: reacting an intermediate containing two halogen atom substituted xanthone with ammonia water to convert halogen atoms into amino groups; and then grafting a nitro-containing group through a Ullmann coupling reaction, then reducing to obtain the diamine monomer containing the xanthone structure, and then polymerizing the prepared diamine monomer with dianhydride to obtain the polyimide containing the xanthone structure. The planar rigid structure and thepolar groups of xanthone are creatively introduced into a polyimide main chain, the planar rigid structure is beneficial to regular stacking of molecular chains and induction of polymer crystallization, and the polar groups can enhance the hydrogen-bond interaction of the molecular chains and promote close stacking of the molecular chains so that polyimide has excellent barrier property, high glass-transition temperature and thermal stability and low thermal expansion coefficient.

The present invention provides a liquid crystal composition and a display device thereof. The liquid crystal composition comprises one or more compounds represented by general formula I which is shownin the description, wherein m is 0, 1 or 2; R1 and R2 each are C1-10 straight-chain or branched-chain alkyl, or C2-10 straight-chain or branched-chain alkenyl; and one or more of non-adjacent CH2 groups in R1 and R2 are replaced by oxygen atoms. The liquid crystal composition can be used for various types of liquid crystal display devices, for example, black and white displays such as TN, STN andthe like, and TFT displays and bistable liquid crystals such as TN, IPS, FFS, VA and the like, and has the characteristics of small dielectric, high clearing point and moderate refractive index.

The invention provides a compound and application thereof, and an organic electroluminescent device comprising the same, the compound has a structure of formula (I), and the compound is used as a material of a luminescent layer in the organic electroluminescent device; and the organic electroluminescent device comprises a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, and the organic layer contains one or a combination of at least two of the compounds. According to the compound provided by the invention, the LUMO orbital energy level of the compound can be improved, direct injection of electrons is reduced, reverse intersystem crossing is facilitated, the luminous efficiency is improved, part or all hydrogen atoms in the compound are subjected to heavy hydrogenation, the molecular structure stability can be greatly improved, and the vibration coupling strength of molecules is reduced; therefore, the energy loss of molecular non-radiative transition is reduced, and the service life of the device is prolonged; and when the compound is applied to an organic electroluminescent device as a luminescent material, the efficiency roll-off of the device can be further reduced, and the service life of the device is prolonged.

The invention relates to a grain unloading device of a harvester. The grain unloading device comprises a grain box and a grain unloading cylinder, the grain box is fixed to a machine frame platform, the grain unloading cylinder is located above the grain box, and the end of the grain unloading cylinder is fixedly connected with a rotating bend; an inlet of the rotating bend corresponds to the position of an outlet of the grain box, and a hydraulic oil cylinder is located outside the grain box; the end of a cylinder rod of the hydraulic oil cylinder is hinged to the rotating bend; the end of a cylinder body of the hydraulic oil cylinder is hinged to a fixing base. The hydraulic oil cylinder is arranged outside the grain box, so that the problem that grains in the grain box are contaminated due to oil leakage of the hydraulic oil cylinder is fundamentally solved.

The invention relates to a ship adopting sea surface micro structure measuring device, which comprises an underwater optical device consisting of a light source and a measuring coder, and an information transmission and treating system consisting of a CCD camera and a computer. The invention is characterized in that the ship adopting sea surface micro structure measuring device further comprises a lifting device which is connected with the underwater optical device; the guide rail of the lifting device is welded and tightly leaned on a guide rail rack; a motor arranged at the upper part of the guide rail rack pulls lifting chains arranged at the two ends of the guide rail rack; the guide rail rack is connected with a base through two parallel blocking rings; the base is vertically fixed on the ship board. The measuring coder comprises glass windows arranged at the two ends of the drawtube; a Fresnel lens is close to the lower part of the glass window at the upper end; a color coding sheet is tightly leaned on the glass window at the lower end; the Fresnel lens, the color coding sheet and the Fresnel lens are on a same optical shaft. The invention is suitable for the ship voyage and operation, thereby monitoring the big size sea surface gradient field in real time with a space resolution of 0.5mm and a slope measuring precision reaching up to 0 degree or 2 degrees.

The invention discloses rosinyl anion macroporous adsorption resin and a preparation method thereof, and the rosinyl anion macroporous adsorption resin is prepared by taking dimethylaminoethyl methacrylate as a monomer and hydrogenated rosin (beta-acryloyloxyethyl) ester as a cross-linking agent through a suspension polymerization method. The rosinyl anion macroporous adsorption resin is a spherical porous material, the average pore size is 3-10 nm, the specific surface area is 5-10 m < 2 > / g, the resin is non-toxic, green and environment-friendly and uniform in particle, and a functional group is of a tertiary amine anion structure. The rosin-based anion macroporous adsorption resin has the unique advantage of separating substances with negative charges, so that the rosin-based anion macroporous adsorption resin can be used for separating hexose pigments, Maillard pigments or other pigments with negative charges in food.

The invention discloses a double-bond-containing cholesterol zwitterionic compound, a preparation method thereof and an ionic liquid based multiphase emulsion prepared from the double-bond-containing cholesterol zwitterionic compound. The structural formula of the compound is shown in the specification, wherein R in the formula represents C1-C4 alkyl groups, m is an integer in the range of 6-12, and n is 3 or 4. The double-bond-containing cholesterol zwitterionic compound has obvious amphipathicity, the ionic liquid based multiphase emulsion can be prepared from the double-bond-containing cholesterol zwitterionic compound only serving as a stabilizer and an ionic liquid serving as one phase with a one-step method, the preparation method is simple, and the obtained multiphase emulsion has good stability and is applicable to various oil-phase systems.

The invention belongs to the technical field of lubricating oil, and particularly relates to a preparation method of wear-resistant anti-corrosion gear oil. The method comprises the following steps: adding titanium sulfate into water and mixing; mixing with a roasted powder, a modified nano-powder, toluene and other assistants; after mixing, adding oil, and stirring at high temperature to obtain the wear-resistant anti-corrosion gear oil. Titanium sulfate is used as a raw material, and is reacted with ammonia water and is calcined at high temperature to generate titanium dioxide ultrafine powder, zinc ions are introduced and are react with sodium sulfide to improve the wear resistance and friction reduction performance of an oil product, and meanwhile, the corrosion resistance of the gearoil is improved by combining the good chemical corrosion resistance of titanium dioxide and zinc sulfide; zinc nitrate hexahydrate and urea are mixed and subjected to a high-temperature water boilingreaction, zinc oxide ultrafine powder has a good rigid structure and is dispersed in the gear oil, the wear resistance and friction reduction performance of the gear oil can be enhanced, meanwhile, electrostatic repulsion can be formed among ultrafine powder particles, the wear resistance and friction reduction performance of the gear oil are improved, and wide application prospects are achieved.

The invention discloses antibacterial diamine prepared from a medical intermediate and a preparation method thereof. According to the preparation method, a grafting reaction is conducted on halogenated phenothiazine to enable halogenated phenothiazine to have an amino group, so a diamine monomer containing a phenothiazine structure is prepared; the diamine containing the phenothiazine structure iseasy to form a D-pi-D or A-pi-A system and has high planarity and relatively high rigidity; and the planar rigid structure is beneficial for regular stacking of molecular chains, induction of polymercrystallization and promotion of tight stacking of the molecular chains, and can improve the barrier property of a polymer prepared from the diamine. Meanwhile, the diamine disclosed by the inventiontakes the phenothiazine structure as a core and has good antibacterial and bacteriostatic effects, and the polymer prepared from the diamine also has a certain antibacterial property.

The invention discloses a double-bond-containing cholesterol zwitterionic compound, a preparation method thereof and an ionic liquid based multiphase emulsion prepared from the double-bond-containing cholesterol zwitterionic compound. The structural formula of the compound is shown in the specification, wherein R in the formula represents C1-C4 alkyl groups, m is an integer in the range of 6-12, and n is 3 or 4. The double-bond-containing cholesterol zwitterionic compound has obvious amphipathicity, the ionic liquid based multiphase emulsion can be prepared from the double-bond-containing cholesterol zwitterionic compound only serving as a stabilizer and an ionic liquid serving as one phase with a one-step method, the preparation method is simple, and the obtained multiphase emulsion has good stability and is applicable to various oil-phase systems.

The invention discloses diamine with a novel structure and a preparation method and application thereof. According to the invention, starting from dihalogenated phenoxazine, a diamine monomer is prepared through a Suzuki reaction and a reduction reaction. The lowest-energy-state molecular structure of the novel diamine monomer has high planarity and a certain antibacterial property; and the molecular chains of a polymer taking the diamine monomer as a monomer are tightly piled up, and the polymer is small in free volume and has high barrier property and antibacterial property. The diamine disclosed by the invention can be used for synthesizing high-performance and functionalized polymers such as polyamide, polyimide, polyamideimide, polyesterimide and the like.

The invention discloses a high-barrier polyimide containing a 9,10-dihydroacridine structure, and a preparation method and an application thereof. The preparation method comprises the following steps:converting halogen atoms of dihalogenated 9,10-dihydroacridine into cyano groups, hydrolyzing to obtain a dicarboxylic acid monomer, performing acylating chlorination, grafting with a nitro-containing groups through an amidation reaction, performing reduction to obtain a diamine monomer, and polymerizing the prepared diamine monomer with dianhydride to obtain the polyimide containing the 9,10-dihydroacridine structure. The diamine containing the 9,10-dihydroacridine structure has a planar rigid structure and also contains many structures capable of generating hydrogen bonds, and polyimide prepared by taking the diamine as a monomer has the advantages of tight molecular chain stacking, small free volume and high barrier property.

The invention discloses thioxanthone polyimide with high planar rigidity and a preparation method of the thioxanthone polyimide. According to the preparation method, halogen atoms of dihalogenated thioxanthone are converted into cyano groups, then hydrolysis and acylating chlorination are carried out and then groups containing nitro groups are grafted through an amide reaction; then diamine monomers containing thioxanthone structures are obtained through reduction, and the thioxanthone polyimide with high planar rigidity is obtained through polymerization of the diamine monomers and dianhydride. According to the invention, a large-volume planar rigid thioxanthone structure is introduced into a polyimide main chain, so that a polyimide molecular chain can be piled up more tightly, the freevolume of a polymer is reduced, and the barrier property of polyimide is effectively improved. Meanwhile, the conjugated structure of the thioxanthone structure can improve the heat resistance and oxidation resistance stability of the polymer and improve the stability of the polymer in an extreme environment.

The invention provides a photodynamic sterilization polymer as well as a preparation method and application thereof. The polymer is composed of a main chain and a side chain; the side chain is composed of a long alkyl chain with a quaternized tail end and can be combined with the surface of bacteria with negative charge to form a tight combined body, so that a bacterial membrane is transparent; the main chain is composed of benzene, fluorene and thiophene and has a relatively strong rigid structure; under a light illumination condition, the main chain is excited by light to sensitize air in the periphery to generate active oxygen, so that an efficient sterilization effect is realized. The polymer can be used as an antibacterial agent and can be used for killing gram positive bacteria and gram negative bacteria; the polymer also can be used for killing fungi and has a broad-spectrum antibacterial function. The polymer is simple to prepare and moderate to react and has relatively high yield. The polymer is used as an efficient photodynamic antibacterial material, concentration needed by sterilization is low and the light dosage is small; common white illumination can reach an efficient sterilization effect. The polymer provided by the invention emits fluorescent light in a long-wave region and also can be used for biological fluorescent imaging.

The invention provides a preparation method of a silica gel immobilized quaternary phosphonium salt. A silica gel type inorganic material is taken as a carrier, and the surface of the carrier is grafted with a quaternary phosphonium salt type sterilization group so as to synthesize a water-insoluble quaternary phosphonium salt. The quaternary phosphonium salt has good sterilization performance, isinsoluble in water, is easy to separate after sterilization, does not have residual poisons, and can be reused after being treated by hydrochloric acid. Furthermore, because an inorganic material such as silica gel is taken as a microcarrier, the defect that an organic polymer serving as the carrier is easily affected can be overcome; the prepared quaternary phosphonium salt has the advantages ofrigid structure, wide carrier source, low cost and better thermal stability; and the prepared quaternary phosphonium salt can be widely applied to sterilization and disinfection of fluid mediums suchas various industrial and civil water as well as preparation of antibacterial materials.

The invention provides an organic compound, an organic light-emitting display panel and application thereof. The organic compound provided by the invention has a structure as shown in a formula I; in the organic compound provided by the invention, the separation of a charge donor and a charge acceptor of a molecule realizes a smaller Est, so that the molecule has a TADF property; the organic compound provided by the invention is a blue thermal activation delayed luminescent material and has a relatively strong rigid structure, molecules are not easy to twist and rotate, intersystem crossing and anti-intersystem crossing can be quickly generated in the molecules, and the transient fluorescence lifetime is shortened, so that the organic compound shows relatively high efficiency; the organic compound provided by the invention is used as a main body material of a light-emitting layer, so that the device has higher efficiency and longer service life.