240 results about "Electron acceptor" patented technology

A long-persistent luminescence emitter containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein, 70 mol % or more of an electron donor structural unit and less than 30 mol % of an electron acceptor structural unit, or containing a polymer that contains, relative to the total molar amount of an electron donor structural unit and an electron acceptor structural unit therein. 70 mol % or more of an electron acceptor structural unit and less than 30 mol % of an electron donor structural unit. The emission decay after stopping light irradiation to the emitter is power law decay.

The invention relates to the technical field of biological denitrification, in particular to a nitrogen-doped carbon dot-based microbial electronic control denitrification system and application thereof. The system comprises electron donor microorganisms, electron acceptor microorganisms and nitrogen-doped carbon dots, the nitrogen-doped carbon dots serve as electron mediators outside cells, an efficient extracellular electron transfer network is constructed, and interspecific electron transfer resistance is reduced; meanwhile, the nitrogen-doped carbon dots can regulate and control intracellular electron transport chains and the energy metabolism process, the improvement of the reducing power and the energy level is promoted, and the metabolism mode optimization is realized. By cooperatively regulating and controlling generation, transmission and utilization of electrons under an extreme electron donor limited oligotrophic condition, the system disclosed by the invention can realize efficient denitrification, avoid nitrite accumulation, remarkably inhibit generation of nitrous oxide (N2O), reduce dependence on an external organic carbon source and an electron source, and improve the denitrification efficiency. And a new technical approach is provided for improving the deep denitrification efficiency under the low-carbon condition.

The invention discloses an acridine-derived thermally activated delayed fluorescent material and an electroluminescent device thereof, and belongs to the technical field of organic luminescent materials. According to the fluorescent material, any electron withdrawing group is used as a receptor, an acridine derivative is used as a donor, nitrogen atoms of the acridine derivative are directly connected with the receptor, a dihedral angle between an electron donor and the electron receptor is increased, the dihedral angle is kept at an angle close to 90 degrees, meanwhile, the large-rigidity donor structure further reduces intramolecular vibration relaxation, and the fluorescence intensity is improved. In addition, HOMO delocalization can be further realized through side conjugation modification of acridine, so that large antiintersystem crossing rate and radiation decay rate are realized, the luminescence property of molecules is further improved, and the efficiency roll-off is reduced. The material provided by the invention can be used as an active material to be applied to organic electroluminescent devices.

The invention discloses a molecular assembly method of a D-A type blending system, which comprises the following steps: by taking indolo [3, 2-B] carbazole as an electron donor (D) and N, N '-bis (4-pyridyl)-1, 4, 5, 8-naphthalene tetraformyl diimide as an electron acceptor (A), dispersing the electron donor (D) and the electron acceptor (A) in an organic solvent, heating, and carrying out ultrasonic treatment to dissolve the electron donor (D) and the electron acceptor (A) to obtain clear and transparent D-A type blending system assembly liquid; vertically inserting a cleaned conductive substrate into the D-A type blending system assembly liquid, soaking for a period of time, lifting the conductive substrate at a constant speed by using a lifting instrument until the conductive substrate is completely separated from the liquid level, horizontally placing, and naturally volatilizing the solvent until the conductive substrate is completely dried to obtain a completely assembled D-A type assembly film; the invention also provides an application of the D-A type assembled film as multi-system information storage. The micromolecule blending assembly system provided by the invention can realize an ultrahigh-density information storage function.

The invention discloses a calcium nitrate slow-release filler for strengthening restoration of black and odorous bottom mud of a river channel and a preparation method of the calcium nitrate slow-release filler. The calcium nitrate slow-release filler is prepared by physically mixing Ca (NO3) 2.4 H2O, PVA (Polyvinyl Alcohol) and sodium carboxymethyl cellulose. The calcium nitrate slow-release filler disclosed by the invention not only can controllably slowly release calcium nitrate and prevent the calcium nitrate from quickly escaping to overlying water to cause secondary pollution after being put into the bottom mud, but also can provide an electron acceptor for the bottom mud, effectively remove sulfide and ferrous ions in the black and odorous bottom mud and relieve the black and odorous phenomenon of the bottom mud in urban river channels; the method has a wide application prospect in the restoration of the black and odorous bottom mud of the river channel.

The invention discloses a biological agent for preventing and treating panax notoginseng root rot, and relates to the technical field of biological prevention and treatment, the biological agent is composed of four layers of functional florae: an A layer of sentinel-decoding flora is used for identifying a pathogen quorum sensing signal and is used as an event trigger source, a B layer of metabolic countering flora is used for decoupling conversion of disease-promoting saponin and controllable release of a metabolic false substrate, and a C layer of functional florae is used for controlling root rot of panax notoginseng. The C-layer self-healing conductive biological membrane construction flora forms a biological membrane with conductivity and self-healing capability on the root surface, and the D-layer electrically-enabled flora constructs stable biological micro-current at the rhizosphere by using ferric oxide particles as external electron acceptors. The layer A triggers to cause controlled release of the layer B, a conversion product of the layer B provides a carbon source and a structural unit for the layer C, and a conductive network of the layer C and the layer D form an electronic path. The biological agent is used for early recognition and continuous inhibition of pathogens in panax notoginseng planting soil, can start defense response in the early stage of quorum sensing signal occurrence, and keeps action stability under complex environmental conditions.

This invention relates to the field of wastewater treatment technology, and more particularly to a method for anaerobic ammonia oxidation denitrification in a conductive membrane bioreactor for wastewater with low concentrations of nitrite. Anaerobic ammonia-oxidizing bacteria are inoculated into a conductive membrane bioreactor; the bioreactor is connected to a DC power supply, with a conductive membrane assembly as the cathode and a three-dimensional porous or fibrous conductive carbon material with a high specific surface area as the anode, and a positive bias is applied to the anode; nitrogen-containing wastewater with a nitrite to ammonia nitrogen molar ratio of 1:1.5 to 1:5 is introduced into the electro-enhanced membrane bioreactor, where the anaerobic ammonia-oxidizing bacteria use the conductive carbon material at the anode as an extracellular electron acceptor for biological denitrification. This invention, based on a conductive membrane bioreactor, achieves efficient denitrification even under nitrite-deficient conditions through a dual approach of "electroadsorption enrichment + electrostimulation enhancement." This method is simple to operate, energy-saving, and has broad application prospects.

The invention discloses a synthesis method and application of a non-condensed ring electron acceptor, which are different from a traditional condensed ring structure or a single alkyl chain side chain, and a dichlorobenzene unit is introduced as a conformation regulating group. As chlorine atoms have strong electronegativity and proper atomic radius, remarkable non-covalent interaction such as Cl-S and Cl-pi can be generated among molecules. The interaction is similar to a set of precise molecular guide rails, molecules are guided to perform highly ordered pi-pi accumulation, so that electron cloud overlapping is remarkably enhanced, and an efficient electron transmission channel is constructed. According to the organic solar cell prepared based on the non-condensed ring electron acceptor material designed by the invention, the electron mobility is remarkably improved, and meanwhile, the charge recombination loss of a device is effectively reduced.

To provide a novel light-emitting device. A light-emitting device with high emission efficiency is provided. A light-emitting device with a long lifetime is provided. A light-emitting device with low driving voltage is provided.SOLUTION: The EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side, the first layer includes a first organic compound and a second organic compound, the fourth layer includes a seventh organic compound, and the first organic compound has an electron-accepting property with respect to the second organic compound; HOMO levels of the second organic compounds are greater than or equal to - 5. 7eV and less than or equal to - 5. 2eV, and electron mobilities of the seventh organic compounds are greater than or equal to 1 * 10 - 7cm2 / Vs and less than or equal to 5 * 10 - 5cm2 / Vs when a square root of an electric field intensity [V / cm] is 600.SELECTED DRAWING: Figure 1

Disclosed is a composition for forming a hole transport layer, the composition containing a charge transport polymer having a unit which is represented by a specific structural formula, tetraaryl borate ions, a first solvent that is an aromatic compound containing an oxygen atom, and a second solvent that does not contain an oxygen atom.　The present invention can provide: a composition which contains a polymer having an aromatic amine structural unit and an electron-accepting compound that improves conductivity, contains a mixed solvent that sufficiently dissolves the polymer and the electron-accepting compound, and can be suitably applied to the formation of a hole transport layer; and a photoelectric conversion element which has a hole transport layer that is formed using the composition.

The invention discloses a phenanthroimidazole-based Fe < 3 + > specific recognition fluorescent probe and application thereof. The fluorescent probe takes a phenanthroimidazole group as an electron donor unit and takes a benzene ring and a fluorine atom substituted benzene ring as an electron acceptor unit. An imidazole group and a fluorine atom are respectively introduced in the directions of a short axis and a long axis of a molecule, so that fine regulation and control of excited state properties are realized, vibration coupling in a first singlet excited state is effectively inhibited, high-purity blue light emission is obtained, and the photophysical properties of the material are remarkably improved. The fluorescent material is simple and convenient in synthesis method, easy to purify, excellent in thermal stability and remarkable in signal response, and has a wide application prospect in detection of Fe < 3 + > in a high-temperature industrial environment.

The present application belongs to the technical field of soil environment regulation, and particularly relates to a paddy soil carbon fixation and emission reduction regulation method based on a ferrihydrite-organic matter complex. The ferrihydrite-organic matter complex is prepared through coprecipitation, the mineral combination degree of organic carbon in soil is improved, and the biological availability thereof is reduced, so as to alleviate the process of organic carbon decomposition and greenhouse gas emission mediated by microorganisms. Under the condition of redox fluctuation, the complex can maintain good structural stability, slow down the process of iron reduction and dissolution and the process of organic carbon release accompanying the same. In addition, the ferrihydrite as an electron acceptor can participate in the electron competition process under anaerobic conditions, so as to inhibit the production of methane to a certain extent. Therefore, the ferrihydrite-organic matter complex can realize the synergistic regulation of organic carbon stabilization and greenhouse gas emission reduction in paddy soil.

The invention discloses a method for rapidly constructing denitrification type anaerobic methane oxidation through hydrogen type methanogens, and relates to the technical field of sewage treatment. According to the method, anaerobic digestion sludge of a sewage treatment plant is taken for inoculation, and a methanogen-mediated denitrification type anaerobic methane oxidation process is constructed. Hydrogen-type methanogens in the anaerobic digestion system excite a reverse methanogenesis function under the condition that organic matters are deficient, and denitrification anaerobic methane oxidation is realized by coupling sulfate and nitrate with nitrogen and sulfur circulating microorganisms. Sulfate is used as a potential electron acceptor in sewage, and dissoluble methane is removed while sulfate is indirectly utilized through recessive biological sulfur cycle catalytic bridging anaerobic methane oxidation and denitrification. In addition, the anaerobic digestion sludge can be continuously inoculated with hydrogen-type methanogens, and compared with traditional denitrification type anaerobic methane oxidation archaea culture, the method is more convenient. Therefore, the denitrifying anaerobic methane oxidation rapidly constructed by the hydrogen-type methanogens is an effective measure for breaking through the deep denitrification of the sewage treatment plant and synchronously controlling and discharging the greenhouse gas.

The invention discloses an organic solar cell based on a dihalogen benzene additive, and a forward device of the organic solar cell comprises a transparent conductive substrate ITO, a hole transport layer, an organic active layer, an electron transport layer and a metal electrode which are sequentially stacked from bottom to top, the organic active layer comprises a polymer donor PM6, a non-fullerene electron acceptor L8-BO and a dihalogenated benzene additive TCBB. According to the organic solar cell based on the double-halogen benzene additive and the preparation method of the organic solar cell, the double-halogen benzene is introduced into the active layer of the organic solar cell as the active layer additive, and the aggregation state structure of the active layer film is optimized, so that the phase separation degree of a donor-acceptor material is improved, and the charge separation and transmission efficiency is improved. According to the organic solar cell prepared by adopting the technical scheme, the photoelectric conversion efficiency can reach 20.11%, the photoelectric conversion efficiency is obviously superior to that of a control group device with a DIO additive, and the device has good stability.

Provided is an organic electroluminescence device including an emission layer between a first electrode and a second electrode, wherein the emission layer includes a first host represented by Formula 1, a second host which is different from the first host, a first dopant which is a thermally activated delayed fluorescence material having an electron donor and an electron acceptor, and a second dopant represented by Formula 2.

Light-emitting device comprising: an anode; a cathode; and an EL layer between the anode and the cathode, wherein the EL layer comprises a first layer, a second layer, a third layer, a light-emitting layer and a fourth layer in that order from an anode side, where the first layer is in contact with the anode, where the fourth layer is in contact with the light-emitting layer, wherein the first layer contains a first organic compound and a second organic compound, the second layer contains a third organic compound, the third layer contains a fourth organic compound, wherein the light-emitting layer includes a fifth organic compound and a sixth organic compound, the fourth layer contains a seventh organic compound and an eighth substance, wherein the first organic compound has an electron-accepting property with respect to the second organic compound, where the fifth organic compound is an emission center substance, where the HOMO level of the second organic compound is higher than or equal to -5.7 eV and lower than or equal to -5.4 eV, and the eighth substance is an organic complex.

The application discloses a kind of high-performance pure organic magnetic composite material and preparation method thereof, the composite material is poly (3-hexyl thiophene) as electron donor, using fullerene as electron acceptor, synthesis poly (3-hexyl thiophene) / fullerene composite charge transfer object.Then after 4" -n-pentyl-4-cyanotriphenyl subsequent doping, poly (3-hexyl thiophene) / fullerene / 4" -n-pentyl-4-cyanotriphenyl composite material.The method and material used in the application enhance the degree of charge transfer between pure organic composite material and solid state structure order, so that composite material obtains high room temperature ferromagnetism and Curie temperature, overcome the shortcoming that organic magnetic material is unstable in performance in air, low Curie temperature.Through poly (3-hexyl thiophene), fullerene and 4" -n-pentyl-4-cyanotriphenyl three composite, provide a kind of simple operation, solid state structure packing order, good stability high magnetic pure organic component composite material preparation new method.

The invention discloses a fluorescent probe for high-sensitivity monitoring of cell mitochondrial autophagy as well as a preparation method and application thereof. The structure of the fluorescent probe is as shown in formula I in the specification. According to the fluorescent probe provided by the invention, a phenol group is used as an electron donor and a pH response unit, hydroxyl tricyanopyrrole is used as an electron acceptor, triphenylphosphine is used as a mitochondrial targeting group, fluorine atoms are introduced to a benzene ring to improve the response rate and the fluorescence intensity, and meanwhile, a thiophene ring is introduced to further expand the fluorescence emission wavelength. The probe can rapidly target mitochondria and emit corresponding fluorescence signals based on pH differences of different autophagy stages, so that real-time, high-sensitivity and high-selectivity monitoring of the mitochondria autophagy process is realized. In addition, the fluorescent probe is simple in molecular structure, small in molecular weight and easy to synthesize, purify and subsequently modify. Cell experiment results show that the probe can accurately trace the mitochondrial autophagy process in cells, and has good application potential in the field of biological imaging and detection.

This invention discloses a green and efficient bioreduction method for quinone-structured natural compounds used in textile dyeing. This method utilizes biosensor-regulated electrode microbial communities of *Shewanella putrefactiveis* and *Saccharomyces cerevisiae* as whole-cell biocatalytic reduction staining conditions. It constructs an electron transport system centered on cable bacteria and redox factors, and a dispersed staining system of quinone-structured natural compounds acting as electron acceptors. This provides a green and efficient bioreduction method for quinone-structured natural compounds used in textile dyeing. Electrons generated by biosensor-regulated electrode microbial communities are directly transferred between microbial species to cable bacteria and redox factors, and then efficiently transferred to highly dispersed natural compounds acting as electron acceptors, resulting in novel structures with dyeing properties.

The patent application discloses an orange-red light thermal activation delayed fluorescence material and a preparation method and application thereof, and relates to the field of organic luminescent materials. The thermal activation delayed fluorescence orange-red light material is composed of an electron acceptor fragment and two same electron donor fragments (triphenylamine), the electron acceptor fragment is quinoxaline-6,7-dicyanide, and the electron donor fragment is triphenylamine. The material has the thermal activation delayed fluorescence characteristic, and the maximum external quantum efficiency of the prepared device is 23.2%.

This invention discloses a small-molecule pyroptosis inducer for tumor cells. It utilizes an N,N-diethylimine group as an electron acceptor (A), a rhodamine scaffold as a π-conjugated system, thiophene and triphenylamine groups as the first electron donor (D1) and second electron donor (D2), respectively, and a rotatable vinyl and C-C single bond to increase intramolecular motion, forming a novel A-π-D1-D2 type small-molecule pyroptosis inducer, Rd-TTPA, with enhanced D-A structure and intramolecular motion. This small-molecule pyroptosis inducer can efficiently target tumor cell mitochondria, inducing pyroptosis through ultrasound-mediated reactive oxygen species production. It can serve as an enhanced sonodynamic deep tumor therapeutic agent guided by near-infrared II (NIR-II) fluorescence imaging.

The present application relates to a white phosphorescent organic light emitting diode with simple structure, which has an organic light emitting unit composed of a pair of electron donor material layer / electron acceptor material layer capable of forming an exciplex at the interface and several light color complementary phosphorescent ultra-thin layers embedded in the interface of the electron donor material layer / electron acceptor material layer and stacked together. Through the sensitization of the interface exciplex host to the phosphorescent ultra-thin layer guest, the complementary light emission of the phosphorescent ultra-thin layer is realized, and the white light emission is formed by combination. The present application utilizes the simple preparation process of the interface exciplex and the phosphorescent ultra-thin layer, effectively simplifies the device structure and the preparation process, and stabilizes the luminescence spectrum of the white light device through the limiting effect of the interface exciplex on the carriers and excitons.

This invention discloses a chemiluminescence gas sensor based on polyoxometalates (POMs), and relates to its fabrication method and application. The sensor is suitable for detecting ammonia at room temperature. The gas sensor includes an adapter base and a sensing element, wherein the sensing element consists of interdigitated electrodes and a sensitive material loaded on the electrode surface. This sensitive material is a composite material of POMs and SnO2. POMs, as excellent electron acceptors, possess good redox properties, thermal stability, and photosensitivity. When combined with SnO2, they can effectively suppress electron-hole recombination, thereby significantly improving the gas-sensing performance of the semiconductor material. Compared with existing technologies, the sensor provided by this invention exhibits high response characteristics to ammonia at room temperature, while also demonstrating excellent selectivity and repeatability.

The invention relates to the technical field of fruit wine fermentation, and discloses a Sanhua plum fruit wine polyphenol substance fermentation extraction process, which adopts an electron acceptor mediated yeast metabolism reprogramming technology, and realizes in-situ conversion and enrichment of polyphenol by controlling the oxidation-reduction potential (ORP) of a fermentation system. According to the method disclosed by the invention, the extraction of polyphenol is successfully upgraded from a simple physical and chemical process to a controllable and efficient biological manufacturing process. The method is not only an'extraction 'process, but also a'conversion' and'strengthening 'process. By precisely regulating and controlling the vital activities of microorganisms, more polyphenols are obtained, and ultimate products which are better in quality, higher in activity, more stable and easier to absorb by human bodies are obtained. Meanwhile, the process has the characteristics of greenness, accuracy and recycling, conforms to the high-efficiency, energy-saving and sustainable development direction of the modern food industry, and has extremely high market application value and industrialization prospect.

This invention belongs to the field of water environment treatment and restoration technology, specifically involving a method for simultaneous restoration of water bodies and sediments using a microbial electrochemical restoration device. The restoration method provided in this invention differs from traditional methods that enhance the transport of electron acceptors such as oxygen or nitrates into the sediment. Instead, it can sequentially form two reaction zones, aerobic and anaerobic, in the longitudinal section of a device. In the anaerobic zone (sediment), electrons from pollutants are directionally pumped out to the water body driven by the redox potential difference between the sediment and water phases. Therefore, pollutants in the sediment and water body can undergo oxidative degradation and reductive degradation, respectively, thereby achieving simultaneous restoration of water bodies and sediments.

The invention belongs to the technical field of organic light-emitting materials and semiconductors, and particularly relates to a difluoro-boron imidazole heterocyclic compound and an electroluminescent device thereof. The structural general formula of the difluoro-boron imidazole heterocyclic compound is as shown in the general formula 1. According to the difluoro-boron imidazole heterocyclic compound provided by the invention, a TADF object structure material taking a benzimidazole difluoro-boron heterocyclic ring as a skeleton is subjected to precise functional modification on a 12-site of a host structure, so that the TADF object structure material can be used as an electron acceptor when being connected with an electron-donating group; and when connected with an electron withdrawing group, the compound can be used as an electron donor to form a bidirectionally adjustable D-A type TADF molecular design, so that the difluoro-boron imidazole heterocyclic compound and an electroluminescent device prepared by taking the difluoro-boron imidazole heterocyclic compound as a guest luminescent material are obtained, and the technical problems that the existing TADF is low in luminous efficiency, short in service life and poor in luminous color purity are solved.

The present application relates to an electroactive compound, a composition comprising the same, and a pattern forming method, and more particularly, to a composition comprising an acid-sensitive polymer comprising a first repeating unit derived from a monomer containing an acid-decomposable group; a photoacid generator compound; a non-polymeric electron acceptor compound, the non-polymeric electron acceptor compound having an electron affinity greater than that of the photoacid generator compound, where the non-polymeric electron acceptor compound does not generate a photoacid, and where the non-polymeric electron acceptor compound does not include a plurality of diazonaphthoquinone (DNQ) groups; and a solvent, where the solvent is present in the composition in an amount greater than 50% by weight, based on the total weight of the composition, where the composition is a positive EUV photoresist or an electron beam photoresist.

The invention relates to a high-voltage-resistant anti-breakdown automobile wire sheath and a preparation method thereof, and relates to the technical field of automobile wire harnesses, and the high-voltage-resistant anti-breakdown automobile wire sheath comprises a modified styrene-ethylene-butylene-styrene block copolymer, polypropylene, functionalized magnesium hydroxide, melamine polyphosphate, white oil and a functional auxiliary agent. An N-vinylcarbazole group grafted on a styrene-ethylene-butylene-styrene block copolymer molecular chain is used as an electron donor, an anthraquinone derivative chemically bonded on the surface of a magnesium hydroxide particle is used as an electron acceptor, and the N-vinylcarbazole group and the anthraquinone derivative form a large number of charge transfer complexes at an interface through pi-pi interaction. According to the charge transfer complexes, a high-density deep energy level trap is introduced into an energy band structure of the material, so that the charge behavior of the material in a high electric field is changed, and high-performance high-voltage-resistant and anti-breakdown effects are realized.

The application provides a sulfate-reducing bacteria culture medium and application thereof, and components of the culture medium include: a carbon source, a nitrogen source, a phosphorus source, calcium chloride, magnesium chloride, an inorganic sulfur source, an organic sulfur compound with reducibility, inorganic trace elements, agar and water; wherein the mass content of the organic sulfur compound with reducibility is 5-30 mg / L, the mass content of the inorganic trace elements is 152-365 mg / L; the organic sulfur compound with reducibility includes lipoic acid and / or thiamine hydrochloride; and the inorganic trace elements include a combination of zinc elements, manganese elements, molybdenum elements and boron elements. The application introduces inorganic trace elements required by biological cell metabolism and rich sulfur electron acceptor species, promotes the growth and metabolism process of sulfate-reducing bacteria, and enables SRB cells to form visible colonies at a faster speed.

The present application belongs to the technical field of organic framework materials, and particularly relates to a kind of covalent organic framework material and its preparation method and application.The present application covalent organic framework material includes electron donor and electron acceptor;Electron donor and electron acceptor are connected by covalent bond;Electron donor includes organic ligand containing aldehyde group terminal group;Electron acceptor includes organic ligand containing amino terminal group.The present application is constructed by specific kind of electron donor-electron acceptor structure, so that the redox center in the covalent organic framework material is separated in space, which is beneficial to the rapid separation and migration of photo-generated carriers and improves the lifetime of photo-generated carriers, thereby efficient photocatalysis-piezoelectricity synergistic catalytic reaction is generated H2O2, and the yield of hydrogen peroxide can be obviously improved, and under the synergistic effect of photocatalysis-piezoelectricity, the efficiency of hydrogen peroxide produced by the material is higher than that under the condition of photocatalysis.