191 results about "Carbazole derivative" patented technology

The invention belongs to the field of photovoltaic materials, and provides a self-assembly hole transport material and application thereof.The self-assembly hole transport material is a novel carbazole derivative and has a phosphonic acid anchoring group capable of achieving monomolecular layer self-assembly, meanwhile, hydrophilic groups containing aromatic rings are introduced to one sides of two benzene rings in carbazole, and therefore the hole transport efficiency is improved. Comprising methoxyphenyl, methylthiophenyl, cyanophenyl, formylaminophenyl or carboxyphenyl, can effectively improve the good wettability of a perovskite precursor solution on a self-assembled monomolecular layer, and can form a good complexing effect with a perovskite component, thereby achieving the purpose of passivating a lower interface of perovskite; meanwhile, the aromatic ring added in the added carbazole can regulate the energy level of the self-assembled micromolecules and the perovskite layer, so that the perovskite can be better matched, the charge transfer efficiency of the cell is optimized, and the effect of improving the conversion efficiency and stability of the perovskite cell is finally achieved.

The invention belongs to the field of photovoltaic materials, and provides a preparation method and application of a self-assembly hole transport material.The preparation method synthesizes a class of new carbazole derivatives through a new process synthesis route, five classes of self-assembly hole transport materials can be synthesized and prepared through four steps, the legal method is simple, the cost is low, and the method is suitable for large-scale production. And expensive raw materials can be avoided, the yield is high, and the method is suitable for large-scale preparation. In the third step of the preparation method, a bromocarbazole substituent coupling substitution reaction is taken as a purpose, so that the process of connecting the hydrophilic group containing the aromatic ring is realized, and equivalently, a method for introducing the hydrophilic functional group containing the aromatic ring to the upper end of carbazole is included and provided. The self-assembled hole transport material obtained by the preparation method can achieve the effects of improving hydrophilicity and optimizing a passivated perovskite lower interface, so that the conversion efficiency and the stability of a perovskite battery can be further improved.

The invention belongs to the technical field of perovskite solar cells, and provides a dibenzofuranyl carbazole derivative and a preparation method and application thereof.The dibenzofuranyl carbazole derivative takes dibenzofuranyl carbazole as a functional group, molecular ordered accumulation is optimized, and hole mobility is remarkably improved; an alkyl carbon chain is used as a linking group, a phosphate group at the tail end is an anchoring group, perovskite interface defects can be effectively passivated, the energy loss at the interface can be reduced, single molecule self-assembly can be realized, the cell performance can be improved, and as a self-assembly monomolecular layer hole transport material, a perovskite solar cell has relatively high photoelectric conversion efficiency, and the photoelectric conversion efficiency can be improved. The service life is long; and the stability is high.

Disclosed are a perovskite solar cell and a fabrication method thereof. The perovskite solar cell includes an electron transport layer, a perovskite layer, and a hole transport layer, where the hole transport layer includes an inorganic substance serving as a hole transport material, and an organic layer including a carbazole derivative is formed on the hole transport layer. A combination of a carbazole derivative and an inorganic material serving as a hole transport layer can allow the preparation of a perovskite solar cell with a high conversion efficiency.

The invention provides a self-assembled monomolecular layer hole transport material based on a polycarbazole derivative and a preparation method and application thereof, and the self-assembled monomolecular layer hole transport material has a structure as shown in a formula I. The self-assembled monomolecular layer hole transport material is simple in structure, high in hole transport property, strong in interface passivation ability, high in thermal stability, and suitable for large-scale application; a polycarbazole derivative is taken as a mother nucleus, an alkyl / aryl chain is taken as a linking group, phosphoric acid is taken as an anchoring group, and rigid conjugated large-plane polycarbazole with a specific structure is taken as the mother nucleus, so that molecular accumulation can be improved, and the hole transport performance of the material can be improved. By taking a phosphate group as a tail end, single-molecule self-assembly can be realized, a perovskite interface can be passivated, the energy loss at the interface is reduced, and the battery performance is improved.

The invention provides a benzobis (thiadiazole) near-infrared two-region fluorescent dye molecule and a preparation method thereof, and the preparation method comprises the following steps: by taking a benzobis (thiadiazole) derivative as a raw material, introducing 3, 4-ethylenedioxythiophene through a Stille cross-coupling reaction; the preparation method comprises the following steps: carrying out bromination with N-bromosuccinimide, introducing a cyanated dibenzocarbazole derivative through a Suzuki cross-coupling reaction, and finally carrying out reduction and cyclization reactions to synthesize the end cyano-functionalized near-infrared two-region fluorescent small molecular dye. The receptor-donor-receptor-donor-receptor (A '-D-A-D-A') structure near-infrared two-region fluorescence molecule disclosed by the invention has the properties of long absorption wavelength, high fluorescence quantum yield, high fluorescence brightness and the like, and has a wide application prospect in the field of near-infrared two-region fluorescence imaging.

The invention discloses application of carbazole derivatives C1-1 to C1-12, C2-1 to C2-5, C3-1 to C3-10, C4-1 to C4-3 and C5-1 to C5-2 to prevention and treatment of pathogenic bacteria of cow mastitis, and belongs to the field of natural medicinal chemistry. The compound disclosed by the invention has good inhibitory activity on the pathogenic bacteria, such as Streptococcus agalactiae ATCC27956, Streptococcus dysgalactiae ATCC27957 and Staphylococcus aureus, of the mastitis of the dairy cow, and the compound disclosed by the invention has good inhibitory activity on the pathogenic bacteria, such as Streptococcus agalactiae ATCC27956, Streptococcus dysgalactiae ATCC27957 and Staphylococcus aureus. The carbazole derivative has the characteristics of simple structure, easiness in synthesis, low price, wide application and the like, and has further research and development values in the aspect of preventing and treating the cow mastitis.

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to a carbazole derivative and an organic electroluminescent device thereof. The carbazole derivative provided by the invention has proper HOMO energy level and LUMO energy level, can be well matched with an adjacent organic functional layer, also has proper charge transfer performance, also has good thermal stability and chemical stability and good film-forming property, and can be used as a main body material in a luminescent layer to improve the luminous efficiency of the luminescent layer. And the driving voltage, luminous efficiency, service life and other performances of the device can be improved.

The invention discloses a polymer-doped blue organic long-afterglow material as well as a preparation method and application thereof, and relates to the field of organic long-afterglow materials, and the polymer-doped blue organic long-afterglow material is prepared from a polymer, a host material and a guest material through solvent evaporation; the polymer is polymethyl methacrylate; the main body material is an electron-rich material diphenylamine derivative; the object material is an electron-rich carbazole derivative, the prepared material belongs to an organic afterglow material and can meet the application requirements in the fields of information encryption, high-end anti-counterfeiting and the like, research on the polymer-doped blue organic long-afterglow material provides a new thought for design and synthesis of a novel blue light-emitting long-afterglow material, and the application prospect of the polymer-doped blue organic long-afterglow material is wide. And a theoretical basis and a material basis can be provided for practical applications such as data encryption and afterglow anti-counterfeiting.

The invention belongs to the field of organic afterglow materials, and particularly relates to a polymer-doped blue organic long-afterglow thin film material as well as a preparation method and application thereof. According to the polymer-doped blue organic long-afterglow thin film material provided by the invention, an electron-rich material diphenylamine derivative which is easy to crystallize and is low in price and easy to obtain is selected as a host material, and meanwhile, an electron-rich carbazole derivative of the same type which is similar in structure and is low in price and easy to obtain is introduced as a guest material; a novel flexible film blue afterglow material is constructed by using a polymer polyvinyl alcohol (PVA) as a matrix, the material can be excited by a 365nm ultraviolet lamp, the afterglow time exceeds 10s in a room temperature atmospheric environment, the afterglow color is blue, the material has good afterglow luminescence performance and flexibility, the application potential of the material in the fields of information encryption and afterglow anti-counterfeiting is shown, and the application prospect is broad. And a theoretical basis and a material basis can be provided for practical applications such as data encryption and anti-counterfeiting.

The invention provides a light-emitting composition film material and application thereof.The light-emitting composition film material comprises a main material and a doping material, the doping material is a compound with the structure shown in the formula I. The main material comprises a first main material and a second main material, the first host material comprises at least one carbazole derivative having a structure represented by any one of formulas (H-1) to (H-4), the second host material comprises at least one compound represented by a formula Ph-2CN-1, Ph-2CN-2, Ph-2CN-3, Ph-2CN-4, Ph-2CN-5 or Ph-2CN-6, or the second host material comprises at least one phosphorescent compound containing metal Ir. The light-emitting film material of the composition has a narrow spectrum and is used for an organic electroluminescent device, so that the device realizes narrow-spectrum TADF emission, the electroluminescent external quantum efficiency of the device reaches up to 35% or above, and the service life of the device is 500 h or above.

The embodiment of the invention provides a perovskite cell and a preparation method thereof, a laminated cell and a photovoltaic module. The perovskite cell comprises a substrate, a first hole transport layer, a second hole transport layer, a tunneling layer, a perovskite functional layer, an electron transport layer and an electrode layer which are sequentially arranged in a preset direction, and the first hole transport layer comprises a carbazole derivative with a carboxyl anchoring group. The second hole transport layer comprises a compound of foldable molecules containing phosphonic acid groups, and the tunneling layer is of a network structure. The technical scheme provided by the embodiment of the invention at least has the following advantages: 1, foldable molecules containing phosphonic acid groups cover the gaps of the first hole transport layer after being folded to serve as the second hole transport layer, so that the wettability (contact angle lt: 10 degrees) of the perovskite precursor is improved;

The invention discloses a carbazole derivative as well as a preparation method and application thereof, a pi conjugated system of carbazole is expanded by introducing a thiophene unit, and (4-(3, 6-di (thiophene-3-yl)-9H-carbazole-9-yl) butyl) phosphonic acid (4PAThCz) is designed. Compared with classical 2PACz, the 4PAThCz shows long-range orderliness and compact pi-pi accumulation, and the molecular dipole moment is enhanced. In addition, the distorted molecular structure of 4PAThCz is helpful to improve solubility and inhibit excessive self-aggregation. The characteristics facilitate hole extraction and transmission, inhibit carrier recombination in a photovoltaic device, and facilitate preparation of an efficient and stable solar cell.

The invention relates to the technical field of electroluminescent materials and devices, in particular to an alcohol-soluble host material for a carbon dot electroluminescent device as well as a preparation method and application of the alcohol-soluble host material. The alcohol-soluble host material for the carbon dot electroluminescent device has a structure as shown in a formula I. According to the invention, phosphate ester is introduced into the alcohol-soluble host material as a side chain, so that on one hand, the solubility of the host material in ethanol can be effectively improved, and on the other hand, the film-forming ability of the host material can be effectively improved. Diphenylamine, carbazole and carbazole derivatives are used as donors, triazine is used as an acceptor, and the host material can be endowed with the characteristic of bipolar transmission. Test results show that the alcohol-soluble host material provided by the invention has excellent alcohol solubility and film-forming ability comparable to that of a polymer host material, and also has good hole and electron transport ability, so that carrier transport is effectively balanced, and the luminous efficiency of a host-guest doped electroluminescent device is improved.

This invention relates to a method for synthesizing N-H functionalized carbazole products based on Fe catalysis at room temperature and pressure. The method involves mixing α-aryl-α-diazo ester with carbazole or a carbazole derivative in an organic solvent, adding an Fe catalyst and additives, and reacting at room temperature and pressure to obtain the N-H functionalized carbazole product. This invention uses metallic Fe as a catalyst to react α-aryl-α-diazo ester to generate α-(N-carbazole)-α-aryl ester compounds under nitrogen atmosphere at room temperature and pressure. It also offers a wider range of selectable substrates and, compared to traditional synthesis methods, has many advantages such as high yield, simple conditions, low waste emissions, simple reaction equipment, and ease of industrial production.

The invention provides an organic compound and application thereof, the organic compound is a phosphorescent host compound containing a carbazole derivative, the triplet state energy level of a molecule is improved, and efficiency loss caused by the fact that triplet state energy of a doped material is transmitted back to a host material is effectively prevented; meanwhile, the molecular steric hindrance designed by the invention is relatively large, the glass-transition temperature and thermal stability of the material molecules are improved, the stability and service life of the organic electroluminescent device are greatly improved, and the organic electroluminescent device has a good industrialization prospect.

The invention discloses the field of organic electronic materials, and particularly discloses a chain terminating molecule for straight-chain polyphosphocarbazole and a polymerization terminating method. The chain termination molecule is a carbazole derivative containing boronic acid pinacol ester, the core structure is'carbazole matrix-linking group-diethyl phosphate group ', and the linking group can be a butyl chain or a benzene ring; after a chain termination molecule is synthesized through a three-step reaction, a Suzuki coupling reaction is utilized to completely replace a residual Br site of straight-chain polyphosphocarbazole, and polymerization termination is realized. The bromine residual quantity of the product is less than or equal to 0.01 wt%, the molecular weight is stabilized at 6-7 monomeric units, and the molecular weight change rate is less than or equal to 5% after the product is dried and stored at 25 DEG C for 6 months; when the material is used as a hole transport layer, the laboratory small-area film thickness deviation is less than or equal to 10%, the corresponding perovskite assembly efficiency is greater than or equal to 23%, the 1000-hour attenuation rate is less than or equal to 15%, the defects of self-agglutination, poor stability and device performance fluctuation of the existing material are solved, the process is simple, and industrialization is easy.

The application discloses a kind of tetrahydrocarbazole derivatives and its photocatalytic synthesis method, belong to organic synthesis technical field, 2-arylene phenyl isonitrile compound, cyclopropyl aniline compound and photocatalyst are added to solvent, after photocatalytic reaction, again separation and purification, obtain tetrahydrocarbazole derivative.This method is more simple compared with the method for using no tetrahydrocarbazole synthesis N-substituted tetrahydrocarbazole derivative, and no additional various additives in reaction, the atomic utilization rate of cyclopropyl aniline compound and 2-arylene phenyl isonitrile compound reaches 100%, reflects atomic economy, raw material is cheap and easy to obtain, reaction cost is low, and environment friendly;It is easy to operate, and target product can be efficiently obtained.The photocatalytic synthesis method of the tetrahydrocarbazole derivative is good in universality of raw material, and raw material is widely sourced, under optimized reaction condition, target product is easy to separate, and has potential application value in material and pharmaceutical field.

This invention discloses an amino compound containing a carbazole derivative and its synthesis method, as well as a perovskite solar cell and its preparation method, belonging to the field of solar cell technology. The general chemical formula of the amino compound of this invention is as follows: Wherein: R1 is a straight-chain alkyl group, with 3 to 4 carbon atoms; R2 is a straight-chain alkyl group, with 3 to 4 carbon atoms. Based on the introduction of long-chain alkyl groups and carbazole groups, both water and oxygen barrier properties and electron transport capabilities can be improved simultaneously, thereby enhancing the stability and photoelectric conversion efficiency of perovskite solar cells and solving the problem of poor stability in existing perovskite systems.

The invention discloses a carbazole derivative embedded with a boron-nitrogen unit, a synthesis method and application. The synthesis method comprises the following steps: respectively carrying out nucleophilic substitution reaction on a raw material 1 or 6 and 4-bromo-1-butene, and separating and purifying to obtain a corresponding intermediate 2 or 7; further adding the intermediate 7, reduced iron powder and ammonium chloride into a solvent for reduction reaction, and quenching, separating and purifying to obtain an intermediate 8; respectively adding the intermediate 2 or 8 and a boronizing reagent into a solvent to carry out electrophilic boronizing reaction, and separating and purifying to obtain a corresponding intermediate 3 or 9; respectively adding the intermediate 3 or 9 and a Grubbs catalyst into a solvent for olefin metathesis reaction, and separating and purifying to obtain a corresponding intermediate 4 or 10; the intermediate 4 or 10, a dehydrogenation reagent and a sacrificial reagent are added into a solvent for an oxidative dehydrogenation reaction, separation and purification are performed to obtain a corresponding compound 5 or 11, and the carbazole derivative embedded with the boron-nitrogen unit has good fluorescence and can be efficiently applied to the fields of OLED and OPD.

Provided is a practically useful organic electroluminescent element having low voltage, high efficiency, and long life characteristics. Specifically, the organic electroluminescent element includes a light-emitting layer containing a first host that is an indolocarbazole derivative represented by general formula (1), a second host that is a dicarbazole derivative represented by general formula (2), and a light-emitting dopant material. (Ring G is represented by formula (1a), Ring H is represented by formula (1b), L1 is a single bond or the like, X is N or the like, Ar1 and Ar2 are aromatic hydrocarbon groups, aromatic hetero groups or the like and at least one is phenyl dibenzofuranyl groups or the like, and R1 and R2 are deuterium or the like. ) (Ar3 and Ar4 are aromatic hydrocarbon groups or the like, L is a single bond or the like, and R3, R6 and R7 are deuterium or the like. > # imgabs0 #

Provided herein are crystalline carbazole derivatives, pharmaceutical compositions and methods of treatment thereof.

This invention belongs to the field of organic electroluminescence technology, specifically relating to a luminescent crystal material, its preparation method and application, and laser-prefabricated luminescent devices. The preparation method of the luminescent crystal material includes the following steps: a first reaction is carried out with an amino-containing spirodifluorene monomer, a halogenated nitrogen heterocyclic compound, and a fluorinated organic acid to obtain a first intermediate; the first intermediate undergoes a second reaction with a gallium halide to obtain a second intermediate; a third reaction is carried out with a carbazole derivative, a naphthenic acid derivative, a luminescent bandgap modulating organic compound, and the second intermediate to obtain a third intermediate; the third intermediate is dissolved in an organic solvent for a fourth reaction, followed by multi-directional condensation separation; the material is collected in a pre-designed receiving dish in a 90-110°C condensation zone, and then subjected to a fourth post-processing to obtain the luminescent crystal material. The prepared luminescent crystal material exhibits high quantum efficiency, excellent thermal stability, and achieves balanced red, green, and blue performance.

Disclosed in the present application are a carbazole derivative monomolecular layer, a preparation method thereof, a transistor memory and a fabrication method therefor, relating to the technical fields of organic storage and information. The transistor memory comprises a source / drain electrode, a semiconductor layer, a carbazole derivative monomolecular layer, a gate insulating layer, a substrate and a gate electrode which are sequentially arranged. The present application prepares a carbazole derivative monomolecular layer and applies same to organic field effect transistor memories to act as a charge trapping layer of devices. The present application involves a simple operation process and low cost, shortens preparation periods while reducing the difficulty in fabrication of transistor memories, and improves the storage performance and stability of transistor memories.

To provide a light-emitting element having high emission efficiency and to provide a light-emitting device and an electronic device that have low power consumption and are driven at low voltage, a carbazole derivative represented by General Formula (1) is provided. In the formula, α 1 , α 2 , α 3 , and α 4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar 1 and Ar 2 each represent an aryl group having less than or equal to 13 carbon atoms; R 1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R 2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n each independently are 0 or 1.

The invention discloses a carbazole derivative-based inlaid composite carbon wave-absorbing material and a preparation method thereof, and relates to the technical field of electromagnetic wave absorbing materials. The preparation method comprises the following steps: by taking a boric acid-based carbazole derivative as a precursor, carrying out free radical polymerization reaction on the precursor and a cross-linking agent in the presence of PMMA microspheres; the reaction comprises local modification on the surface of the microsphere and copolymerization in a solvent at the same time, and a composite precursor composed of the surface modified microsphere and a copolymer is obtained; and then carrying out pre-oxidation and carbonization treatment on the composite precursor to obtain the embedded composite carbon wave-absorbing material. The unique structure creates a rich heterogeneous interface, cooperates with dipole polarization, interface polarization, conductive loss and multiple scattering, and jointly constructs an efficient multiple electromagnetic wave loss mechanism, so that the material realizes efficient electromagnetic wave absorption performance on the premise of not depending on magnetic components.

The invention discloses a boron-containing polycyclic compound and an organic photoelectric element containing the same, and belongs to the field of organic photoelectricity. The boron-containing polycyclic compound has a structure as shown in a formula (1) or a formula (2). According to the compound, a boron-containing skeleton and a carbazole derivative are fused through intramolecular conjugation expansion, and a novel rigid unit is constructed. The conjugated fusion not only integrates the electron transport capability of a boron-containing skeleton and the hole transport characteristic and high triplet state energy level of carbazole, but also effectively increases the orbital delocalization range and significantly reduces the singlet state-triplet state energy level difference (delta EST) by reconstructing the distribution of a front line molecular orbital, thereby enhancing the reverse intersystem crossing rate (kRISC) of the compound, and enhancing the efficiency of the compound. And the utilization efficiency of triplet excitons is obviously promoted. When the material is used as a host material to be applied to an organic light-emitting diode, efficient and directional transfer of energy to an object can be ensured, the efficiency of a device is improved, the stability of the device is improved, and the material has a good commercialization prospect.

The invention provides a self-assembled monomolecular layer hole transport material of an indenocarbazole derivative and a preparation method and application thereof, the hole transport material has a structure shown in a formula I. The self-assembled monomolecular layer hole transport material is simple in structure, high in hole transport property, strong in interface passivation ability and high in thermal stability, and can be applied to the field of hole transport. Indenocarbazole with a rigid conjugate large plane is used as a parent nucleus, so that molecular accumulation can be improved, and the hole transport performance of the material can be improved. By taking a phosphate group as a tail end, single-molecule self-assembly can be realized, a perovskite interface can be passivated, the energy loss at the interface is reduced, and the battery performance is improved. When the synthesized material is used as a hole transport layer of an inverted perovskite solar cell, gt can be obtained without doping; and meanwhile, the service life of the perovskite solar cell is greatly prolonged, the stability of the perovskite solar cell is greatly improved, and industrialization of the perovskite solar cell is expected to be achieved.

The invention discloses an organic phosphorescent material based on a dithipyrrole derivative modified by a carbazole derivative as well as a preparation method and application of the organic phosphorescent material, belongs to the technical field of luminescent materials, and overcomes the defects that the existing pure organic phosphorescent material is low in luminous efficiency, short in service life and high in environmental sensitivity through molecular structure design. Meanwhile, the problems of toxicity and biological incompatibility of heavy metal materials are avoided. By introducing carbazole and derivative groups thereof, the optical performance and application value of the material are remarkably improved, and the material has a wide application prospect in the fields of biological imaging and phototherapy. Therefore, the method has important innovative significance and practical value in the fields of organic photoelectric materials and biomedical materials.