61 results about "Dibenzofuran" patented technology

The application discloses a kind of flame-retardant expandable polystyrene and its preparation method.It includes the following raw materials: styrene, nucleating agent, desalted water, organic compound containing peroxide functional group, inorganic salt, bromine flame retardant, dispersant, solvent.The product powder and bulk material prepared by the application are less, and the prepared polystyrene board has excellent mechanical properties.After one week or even one month, no collapse, deformation and other phenomena occur, the combustion performance completely reaches B level, and has efficient flame-retardant fireproof performance.Meanwhile, the product obtained by the application has high bromine content, good thermal stability, low bleeding, no toxicity, little influence on material mechanical properties, and no toxic gas such as polybrominated dibenzo-p-dioxin and polybrominated dibenzofuran is produced during thermal cracking or combustion, which completely meets the requirements of European dioxin regulations and does not harm the environment.

The invention relates to the technical field of organic light-emitting display, in particular to an asymmetric substituted dibenzofuran compound and application thereof. The asymmetric substituted dibenzofuran compound has a structure as shown in formula (I), and can be used as a hole transport material. The compound has an asymmetric dibenzofuran bis-substituted arylamine parent structure, is high in bond energy between atoms, has good thermal stability, is beneficial to solid-state accumulation between molecules, is high in hole transition capability, and can effectively reduce the voltage of a device and prolong the service life of the material when being used as a hole transport material. The invention also provides an organic electroluminescent device and a display device containing the compound shown in the formula (I).

The application discloses a host material, an organic electroluminescent material containing double hosts and application thereof, and relates to the field of organic electroluminescent materials. The structure of the host material is shown in general formula 1: the first host material with a triazine skeleton is connected with two benzene mother nuclei at different positions of a naphthalene ring, and the rigid planar structure brings high glass transition temperature and thermal decomposition temperature. One benzene is fixed at an ortho position of the triazine ring, and a dibenzofuran is used as a main host group at another position of the triazine ring, which can efficiently transport electrons, balance electrons and holes, realize a wider exciton recombination region and higher exciton utilization, and effectively reduce the driving voltage and efficiency roll-off. Meanwhile, the second host with a triarylamine structure is matched, which can simultaneously enhance the hole transport and electron transport capacity, so that when the holes are injected into the p-type host and the electrons are injected into the n-type host, the driving voltage is reduced, and the luminous efficiency and the service life are also significantly enhanced.

The present invention relates to materials for organic electroluminescent devices. In particular, the present invention relates to amines having dibenzofuran, dibenzothiophene and fluorene groups for use as triplet matrix materials, in particular in organic electroluminescent devices. The invention also relates to a method for producing the compounds according to the invention and to electronic devices comprising said compounds.

The invention relates to the technical field of organic electroluminescent materials, and provides an organic compound, an organic electroluminescent device containing the same and an electronic device. The arylamine compound comprises a dibenzofuran carbazole mother nucleus structure, and when the compound is used as a hole-type main body material in a mixed main body material, the carrier balance in a light-emitting layer can be improved, the carrier recombination area can be widened, the exciton generation and utilization efficiency can be improved, the light-emitting efficiency of a device can be improved, and the service life of the device can be prolonged.

The application discloses a synthesis method of aromatic aldehyde, comprising the following steps: under inert atmosphere, a compound shown in formula I and a compound shown in formula II are reacted in an organic solvent containing a photocatalyst, a nickel catalyst, a ligand, a base and water under blue light irradiation to obtain aromatic aldehyde shown in formula III; formula I, formula II and formula III are structures as follows, ring A is selected from benzene, pyridine, thiophene, furan, pyridazine, indazole, indole, isoquinoline, quinoline, naphthalene, benzothiophene, dibenzofuran or dibenzothiophene; the application generates formyl radicals under the nickel synergistic photo-oxidation and reduction catalytic condition, and the formylation of bromobenzene and its derivatives is realized in a simple and efficient one-pot way, aromatic aldehyde is constructed, and the reaction has the characteristics of cheap and easily available raw materials, mild reaction conditions, controllable synthesis process, high separation yield / yield, green environmental protection, wide substrate applicability and the like.

The present application relates to a kind of device and method for extracting high-purity chemicals from coal tar wash oil fraction, comprising: naphthalene separation column, methylnaphthalene separation unit, acenaphthene-fluorene-dibenzofuran separation unit;Methylnaphthalene separation unit includes methylnaphthalene separation tower, β-methylnaphthalene subunit and α-methylnaphthalene subunit connected in sequence;Acenaphthene-fluorene-dibenzofuran separation unit includes light removal tower, acenaphthene subunit, dibenzofuran subunit and fluorene subunit connected in sequence;The material outlet of the bottom of naphthalene separation column is connected with methylnaphthalene separation tower;The material outlet of the bottom of methylnaphthalene separation tower is connected with the material inlet of light removal tower.The device provided by the present application can effectively extract target chemicals in coal tar wash oil fraction by reasonable configuration of the device and coupling cooperation between devices, and obtain high-purity products.Compared with existing wash oil extraction chemical technology, it has higher efficiency, wider applicability and better product quality.

The invention belongs to the technical field of organic photoelectric materials, and discloses a compound with an electron transmission function, a preparation method and an organic electroluminescent device. The compound with the electron transport function has a structure as shown in a formula I in the specification. According to the invention, triazine is used as a mother nucleus and is connected with a naphthalene ring through dibenzofuran or dibenzothiophene, and a cyano derivative and aryl or heteroaryl are used as a triazine side chain, so that the obtained compound can be used as a material of an electron transport layer or a hole blocking layer, and has the advantages of reducing driving voltage, improving luminous efficiency and prolonging service life.

This utility model relates to a dibenzofuran separation and purification device, including a distillation tank with a heater inside. The top and bottom of the distillation tank are respectively provided with a first discharge port and a second discharge port. A first feed port is provided on the side wall of the distillation tank. The device also includes a preheater, a toluene tank, a finished product tank, a first transfer pump, and a second transfer pump. The preheater has a second feed port and a third discharge port, and a first heat exchange coil is installed inside the preheater. The toluene tank has a third feed port and a fourth discharge port. The finished product tank has a fourth feed port and a fifth discharge port, and a second heat exchange coil is installed inside the finished product tank. The first feed port is connected to the third discharge port via a first pipeline. The first discharge port is connected to a main distillation pipe. The first transfer pump is installed on the main distillation pipe. The third and fourth feed ports are connected to the main distillation pipe via second and third pipelines, respectively. This utility model can improve the separation and purification efficiency and purity of dibenzofuran.

The present invention describes dibenzofuran derivatives substituted by electron-deficient heteroaryl groups, and electronic devices, especially organic electroluminescent devices, comprising these compounds as triplet matrix materials.

The invention belongs to the technical field of organic photoelectric semiconductor materials, and discloses a xanthene-based small organic molecule material as well as a preparation method and application thereof. According to the xanthene-based organic small molecule material structure, triphenylamine is used as a core, a large-volume xanthene spirofluorene unit, a dibenzofuran unit and a carbazole unit are introduced, and the molecular size is increased while the excellent hole mobility of the triphenylamine core is preserved, so that excitons close to an active aromatic amine core are eliminated; the micromolecule has the effect of limiting electron leakage, can keep stable under the action of electrons and excitons, is beneficial to hole injection and transmission, and has the following structural general formula. The xanthene-based small organic molecule material can effectively improve the luminous efficiency and prolong the service life of an organic electroluminescent device.

This application discloses an organic compound, a mixture, a composition, an organic light-emitting device, and a display panel. The general formula of the organic compound is as follows; the molecular structure of the organic compound consists of two of the following: an electrophilically hybridized nitrogen atom combined with a fluorenyl structure, a dibenzofuran structure, and a dibenzothiophene structure. This gives the organic compound sufficiently strong hole transport and stability. When the organic compound of this application is applied to the light-emitting auxiliary layer, it can effectively block excitons and suppress exciton reverse transport, which is beneficial to improving the luminous efficiency and lifetime of the organic light-emitting device.

This invention relates to conjugated polymers containing dibenzofuran (thiophene) and carbazole units, their preparation methods, and applications. To address the problems of poor optical contrast, slow response time, and poor cycling stability of existing conjugated polymers as electrochromic materials, this invention uses 2,8-dibromodibenzofuran or 2,8-dibromodibenzothiophene as reactants, reacting them with 9-hexyl-3,6-bis(4,4,5,5-tetramethyl-1,3,2-dioxoborane-2-yl)-carbazole or 9-phenyl-3,6-bis(4,4,5,5-tetramethyl-1,3,2-dioxoborane-2-yl)-carbazole to form conjugated polymers with dibenzofuran (thiophene) and carbazole units in the main chain. The conjugated polymers of this invention exhibit excellent electrochromic properties, including excellent cycling stability, fast switching time, high optical contrast, and low voltage start-up. This invention is expected to be applied in fields such as smart windows, rearview mirrors, military camouflage, and electronic tags in the construction and automotive industries.

This application relates to the field of organic electroluminescent materials technology, providing an organic compound and an organic electroluminescent device and electronic device containing the same. The organic compound of this application comprises a core structure formed by the fusion of 7H-benzo[C]carbazole with dibenzofuran or dibenzothiophene through a pyrrole ring. When this compound is used as a hole-transporting host material in a hybrid host material, it can improve carrier balance in the luminescent layer, broaden the carrier recombination region, improve exciton generation and utilization efficiency, and enhance the luminous efficiency and lifetime of the device.

The invention relates to the technical field of organic electroluminescent materials, and provides an organic compound, an organic electroluminescent device containing the same and an electronic device. The arylamine compound comprises a mother nucleus structure of phenanthrene dibenzofuran, and when the compound is used as a main body material of a light-emitting layer, the carrier balance in the light-emitting layer can be improved, the carrier recombination area can be widened, the exciton generation and utilization efficiency can be improved, the light-emitting efficiency of a device can be improved, and the service life of the device can be prolonged.

The invention relates to the technical field of organic light-emitting display, in particular to an asymmetric disubstituted dibenzofuran compound, a hole transport material and an organic light-emitting device. The asymmetric disubstituted dibenzofuran compound has a structure as shown in a formula (I), the asymmetric disubstituted dibenzofuran compound has an asymmetric disubstituted dibenzofuran structure, and the structure of 1-dibenzofuran substituted arylamine has a steric effect, so that the HOMO energy level of the compound can be deepened, the energy range between a hole transport layer and a light emitting layer is reduced, and the light emitting efficiency is improved. When used as a hole transport material, the material can effectively reduce device voltage; meanwhile, the asymmetric dibenzofuran disubstituted structure can effectively increase the crystallization temperature of the material, improve the thermal stability and prolong the service life of the material. According to the invention, a plurality of fused heterocycle substituted fragments enable the compound to have a good hole migration speed, and the voltage of a device is reduced. The invention also provides an organic electroluminescent device and a display device containing the compound shown in the formula (I).

This invention provides a pyrene-based compound, its preparation method, and its applications, belonging to the technical field of organic electroluminescent materials. The pyrene-based compound provided by this invention has the structural formula shown in Formula 1, wherein R1 and R2 are each independently selected from substituted or unsubstituted methyl, tert-butyl, phenyl, carbazole, diphenylamino, and dibenzofuranyl. The pyrene-based organic electroluminescent material provided by this invention can be applied in solution-processed OLED technology as a narrow-spectrum luminescent material, effectively improving the aggregation-induced fluorescence quenching effect and the broadening of the full width at half maximum (FWHM) caused by the rigid planar structure of boron-nitrogen fused rings. It reduces the FWHM, ensuring that the luminescent performance and color purity of the device are not only not reduced during the luminescence process but are also significantly improved.

According to the main body material, the organic electroluminescent material containing the double main bodies and the organic electroluminescent device, the main body material contains a triarylamine structure and dibenzofuran binaphthyl, the physical and thermal stability of a compound of the triarylamine structure is good, crystallization and aggregation among molecules are not prone to occurring, and the service life is effectively prolonged; the HOMO / LUMO energy level of the material can be adjusted by introducing a triarylamine structure, and the energy level of the material is better matched with the energy level of other materials; the total reflection loss and waveguide loss of a traditional OLED device can be effectively reduced, and the luminous efficiency is improved. The dibenzofuran binaphthalene can improve the fluorescence quantum yield, and has good thermal stability and a proper energy level structure; the triazine structure has relatively good stability and relatively strong electron accepting capability, energy required during electron injection is reduced, and the voltage required for working of the device is reduced; when the luminescent material is used for the organic electroluminescent device, the driving voltage of the organic electroluminescent device is reduced, the efficiency of the device can be improved, and the service life of the device can be prolonged.

The application discloses a synthesis method of photoelectric material intermediate 1-bromodibenzofuran. ， The synthesis method uses m-bromophenyl methyl ether as a starting material, adds diisopropyl lithium and o-fluoro nitrobenzene to obtain 2-bromo-6-methoxy-2 The intermediate 1-bromodibenzofuran is synthesized by using the application, and from the starting material to the final product, purification is not needed in the middle, loss of intermediate products is reduced, the product yield is high, and the comprehensive yield is more than 78%. In the synthesis method, the raw material is simple and easy to obtain, no strong pollution material is used, the post-treatment operation is simple and easy to implement, and the method is suitable for industrial production.

The present invention describes amines with dibenzofuran, dibenzothlophene and fluorene groups, especially for use as triplet matrix materials in organic electroluminescent devices. The invention further relates to a process for preparing the compounds of the Invention and to electronic devices comprising these.

The invention discloses application of a compound containing a dibenzofuran structure in preparation of a medicine for preventing and / or treating nausea and vomiting, and relates to the technical field of medicinal chemistry. The invention provides application of a compound containing a dibenzofuran structure in preparation of a medicine for preventing and / or treating nausea and vomiting, the molecular formula of the compound is C19H11ClN2O4, and the CAS number is 328255-08-9. The compound can effectively reduce the number of times of canine retching and vomiting caused by cis-platinum, has an effect superior to that of metoprazole, has the potential of preventing and / or vomiting caused by chemotherapy, and has an application prospect in development of drugs for treating vomiting caused by chemotherapy drugs.

The invention belongs to the technical field of organic photoelectric materials, and particularly relates to an aromatic compound and an organic electroluminescent device thereof. Benzene or aza-benzene is used as a center and is respectively connected with three groups, one group is dibenzofuran / thiophene or fused furan / thiophene, and the other group is linear fused aryl formed by fusing benzene or aza-benzene. According to the aromatic compound disclosed by the invention, molecules have relatively regular arrangement, so that the molecules have very good light transmittance and film-forming property, and the aromatic compound can be used as a covering layer to be applied to an OLED (Organic Light Emitting Diode) device, so that the luminous efficiency of the device can be improved. Meanwhile, the aromatic compound provided by the invention is used as an electron transport material or a main body material, and can also improve the performance of an OLED (Organic Light Emitting Diode) device.

The present invention relates to materials for organic electroluminescent devices. In particular, the present invention relates to amines having dibenzofuran, dibenzothiophene and fluorene groups for use as triplet matrix materials, in particular in organic electroluminescent devices. The invention also relates to a method for producing the compounds according to the invention and to electronic devices comprising said compounds.

The invention discloses a compound containing triazine, carbazole and dibenzofuran and an organic light-emitting device, and belongs to the technical field of semiconductors, the structure of the compound is shown as a general formula (1), after the compound is applied to a light-emitting layer of the organic light-emitting device, the service life of the device can be greatly prolonged, and meanwhile the efficiency of the device is improved.

The invention relates to the technical field of organic electroluminescence, in particular to a phosphine-containing TADF compound and a preparation method and application thereof, and the general formula structure of the phosphine-containing TADF compound is shown in the specification. Ar is phenyl, deuterated phenyl, biphenyl, partially deuterated biphenyl, terphenyl, partially deuterated terphenyl, naphthyl, 9-phenyl anthryl, pyrenyl, phenanthryl, phenyl, benzanthryl, dibenzofuranyl, dibenzothienyl, 9, 9-dimethyl fluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9-dimethylfluorenyl, 9, 9 the structural formula is selected from any one of 9-phenyl fluorenyl, 9-diphenyl fluorenyl, 9-phenyl dibenzo carbazolyl and partially deuterated 9-phenyl dibenzo carbazolyl, or partially deuterated 9-phenyl dibenzo carbazolyl. The phosphine-containing TADF compound is high in molecular rigidity, has the advantages of high glass transition temperature and good thermal stability, is high in fluorescence quantum efficiency, and remarkably improves the luminous efficiency of a device. The organic electroluminescent element using the compound as a host luminescent material has higher luminous efficiency and longer service life.

Polyimide containing dibenzofuran (thiophene) and triphenylamine structure and preparation method and application thereof, and application thereof, the present application relates to polyimide containing dibenzofuran (thiophene) and triphenylamine structure and preparation method and application thereof. In order to solve the problem of low solubility of aromatic polyimide in organic solvent, poor optical contrast, slow response time and poor capacitor performance, 2,8-dibromodibenzofuran (thiophene) is used as raw material, and 4-methoxy-4'-nitrodiphenylamine is reacted to obtain a new precursor containing dibenzofuran (thiophene) and triphenylamine structure. The nitro group is reduced to obtain a diamine monomer, which is polymerized with dianhydride to form a new high-performance polyimide. At the same time, the polymer has excellent electrochromic performance, including excellent cycle stability, fast switching time, high optical contrast and low voltage start. It also has excellent capacitor performance, including excellent specific capacity and cycle stability. The present application is expected to be applied in the field of electrochromic supercapacitor.

The application provides a silicon-based substituted compound of a general formula (I). The compound has a 1-dibenzofuran-substituted and phenyl-silicon-substituted arylamine parent structure, high bond energy between atoms, a large conjugated plane, is beneficial to solid-state stacking between molecules, and exhibits good thermodynamic stability. When used as a hole transport material, the compound has strong hole transition ability, can effectively reduce a device driving voltage, and improves a service life of the device. The application also provides a hole transport material containing the silicon-based substituted compound of the general formula (I), an organic electroluminescent device, and a display device.

The present invention relates to a composition comprising an electron transport host and a hole transport host, the use thereof in electronic devices and electronic devices comprising said composition. The electron transport host is more preferably selected from the class of triazine-dibenzofuran-carbazole systems or triazine-dibenzothiophene-carbazole systems. The hole transport host is preferably selected from the class of bis-carbazoles.

The present invention relates to an organic electroluminescent device comprising a mixture comprising an electron-transporting host material and a hole-transporting host material, and to a formulation comprising a mixture of the host materials and to a mixture comprising the host materials. The electron-transporting host material corresponds to a compound of the formula (1) from the class of dibenzofuran or dibenzothiophene derivatives containing a substituted pyridine, pyrimidine or triazine unit and a substituted further dibenzofuran or dibenzothiophene unit.

The invention is applicable to the technical field of aggregation-induced enhanced luminescent materials, and provides a preparation method and application of compounds for specific recognition of tryptophan, the compounds comprise a compound 1 and a compound 2, the compound 1 is specifically 9, 10-bis (bis (dibenzofuran-2-yl) methylene)-9, 10-dihydroanthracene, and the compound 2 is specifically 9, 10-bis (bis (dibenzofuran-2-yl) methylene)-9, 10-dihydroanthracene. According to the present invention, the two compounds prepared by using the method have excellent AIE effects, and the fluorescence emission intensities of the two compounds are higher than the fluorescence emission intensities of the existing fluorescence detection substances, such that the fluorescence emission intensities of the two compounds can respectively achieve 775.9 and 1190.0; the two compounds can instantly respond to tryptophan, so that the working time of tryptophan detection is greatly shortened, and the working efficiency is effectively improved.