126 results about "Dibenzofuran" patented technology

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.

The invention discloses an organic compound, a composition, an electronic device and a display panel. The organic compound has a structure as shown in formula (1): (1); the organic compound provided by the invention is an arylamine compound taking dibenzofuran or dibenzothiophene substituted by a heterocyclic group containing a nitrogen atom, an oxygen atom or a sulfur atom as a core structure, and can have a relatively high refractive index; when the organic compound provided by the invention is used in a covering layer of an electronic device, the refractive index of the covering layer can be effectively improved, so that the luminous efficiency of the electronic device is improved, and the electronic device with excellent performance can be realized.

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 the technical field of organic photoelectric material preparation, and particularly relates to a compound, an organic electroluminescent device containing the compound, and an illumination or display device. The compound of the present application is used as a light-emitting auxiliary layer material, is obtained by using a dibenzofuran containing a limited aryl combination as a key group, is convenient for the evaporation process of a device, can effectively improve the light-emitting efficiency of an organic light-emitting device, and has a good application prospect.

According to the arylamine compound with the structure shown in the formula (1), the compound is applied to an organic electroluminescent device as a second hole transport layer material, and performance improvement of the organic electroluminescent device can be achieved. Wherein A1 is selected from a substituted or unsubstituted C6-C14 aromatic ring, A2 is selected from a substituted or unsubstituted C10-C14 aromatic ring, L1 and L2 are respectively and independently selected from a single bond, a substituted or unsubstituted C6-C30 arylene group and a substituted or unsubstituted C3-C30 heteroarylene group, L3 and L5 are respectively and independently selected from a substituted or unsubstituted C6-C30 arylene group, and L5 is selected from a substituted or unsubstituted C6-C30 heteroarylene group. L4 is selected from substituted or unsubstituted dibenzofuranylidene and substituted or unsubstituted dibenzothienyl, and Ar1 and Ar2 are respectively and independently selected from hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C10 cycloalkyl, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl.

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 application provides a light-emitting auxiliary material and a preparation method and application thereof, and belongs to the field of organic electroluminescence. The light-emitting auxiliary material of the application is connected with triarylamine on a para-folded biphenyl bridged adamantane, one side chain of the triarylamine is an aryl-bridged dibenzofuran, and the other side chain is selected from specific groups. The adamantane has high spatial symmetry and a rigid structure, and can improve the service life of a device to a certain extent. The dibenzofuran is extended through the buffer of an arylene group, the molecular fluidity is enhanced, and thus the light-emitting efficiency of the device is improved. In addition, the dibenzofuran itself has excellent electrochemical stability, is beneficial to improving the mobility of the compound, improving the light-emitting efficiency, and also improving the service life. The organic electroluminescent device using the light-emitting auxiliary material of the application has low driving voltage, high light-emitting efficiency and long service life.

The present invention discloses a blue luminescent composition and an organic electroluminescent device comprising the blue luminescent composition. The blue luminescent composition comprises a host material with a general structural formula as represented by Formula I and a guest material with a general structural formula as represented by Formula II. In the present invention, a composition composed by rational combination of a compound containing a dibenzofuran group and deuterium-substituted anthracene as a host material and a compound containing a cycloalkyl group and a steric hindrance group such as thiophene as a guest material is capable of significantly enhancing the stability and lifetime of a blue-light organic electroluminescent device while enhancing the electron migration and transfer efficiency and eliminating a host luminescence phenomenon.

The present application belongs to the technical field of organic photoelectric material, and relates to 1,3,4-triaryl-substituted dibenzofuran compound and a light-emitting device thereof. Specifically, the compound of the present application is represented by the following general formula I, and has excellent film-forming property and thermal stability, and can be used as a host material of a light-emitting layer to prepare an organic electroluminescent device, especially a blue organic electroluminescent device. More importantly, the compound of the present application has excellent transport property and light-emitting property, when used as a blue light-emitting layer material, the voltage of a single-layer electroluminescent device and a stacked-layer electroluminescent device is effectively reduced, and the light-emitting efficiency and the life performance are improved.

The invention discloses a preparation method of dibenzofuran. The preparation method comprises the following steps: melting and charging: heating a dibenzofuran raw material to completely melt the dibenzofuran raw material into liquid, and then filling the liquid into a crystallization tower, the dibenzofuran raw material being a crude product obtained after o-phenylphenol is separated from a product obtained after a dibenzofuran hydrogenation reaction or a dibenzofuran fraction separated from washing oil processing; cooling crystallization: cooling the temperature in the crystallization tower at a preset cooling rate to a crystallization final temperature, keeping the constant temperature for a preset time, and discharging a crystallized liquid; sweating and discharging: fully opening a valve at the bottom of the crystallization tower, and raising the temperature of the crystallization tower to sweating final temperature at a preset temperature raising rate for sweating; and after perspiration is completed, closing a valve at the bottom of the crystallization tower, heating crystals in the crystallization tower until the crystals are completely molten, and collecting the product dibenzofuran. According to the present invention, the dibenzofuran fraction separated from the dibenzofuran hydrogenation reaction by-product or washing oil processing is adopted as the raw material, such that the industrial dibenzofuran product with the purity of more than 99% can be obtained.

The present invention discloses an organic light-emitting doping material and a preparation method thereof and an organic electroluminescent device, and relates to the technical field of optoelectronic devices. The organic light-emitting doping material provided by the present invention has a structural formula of A The structure of the ligand changes some electrons and groups, changes the molecular space structure, improves the spin-orbit coupling effect of the luminescent molecule, makes it conducive to the generation of phosphorescence, enhances its quantum efficiency, and B By introducing a trifluoromethyl group into the dibenzofuran on the ligand and adding an aromatic group compound, the compound of the present invention can improve the intermolecular symmetrical dipole moment by adjusting the electrochemical properties of the compound, while also improving the phosphorescence quantum efficiency and electroluminescence efficiency of the material. Compared with the comparative example, the organic electroluminescent device prepared by using the compound of the present invention as the doping material for the light-emitting layer has a significantly lower driving voltage, and a significantly improved luminous efficiency and lifespan.

The present invention relates to OLED materials containing aza-dibenzofuran or aza-dibenzothiophene; to the use thereof in organic electronic devices; to mixtures containing these materials; and to electronic devices containing these compounds, in particular organic electroluminescent devices containing these compounds as matrix materials, electron-transport materials or hole-blocking materials.

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.

The invention belongs to the field of catalytic synthesis, and particularly discloses a treatment method of a dioxin compound generated after medical waste incineration, which comprises the following steps: S1, mixing the dioxin compound, alkali and electrolyte in a solvent in a glove box at room temperature to obtain a mixed solution; s2, electrifying an electrode by using the power supply to electrolyze the mixed solution to obtain an electrolytic reaction product; and S3, washing the electrolytic reaction product with a saline solution, extracting with an extractant after washing, and removing the solvent by rotary evaporation after extraction to obtain the high-boiling-point solvent dibenzofuran compound, according to the invention, the cis-virulent dioxin compound is converted by a simple, efficient and green method, and the common high-boiling-point solvent dibenzofuran compound is finally obtained; the gram-level reaction can be realized through electrolysis at room temperature, and the yield is high; the reaction is economical and environment-friendly, high-temperature conditions are not needed, operation is convenient, and reaction conditions are mild.

The invention discloses a compound containing a nitrogen heterocyclic structure and an organic electroluminescent device. The dibenzofuran directly connected with the triazine group is completely deuterated, so that the chemical stability, the photoelectric stability and the thermal stability of the material structure are greatly improved, the stability of a device is improved, and the service life is further prolonged. According to the present invention, the P-type compound can form the good Premix material, the P-type compound has good P / N stability and mass production stability during the evaporation process, and the formed Premix material has more balanced carrier mobility, such that the efficiency of the device is substantially improved, and the service life of the device is substantially prolonged.

The invention relates to an organic electroluminescent compound with triazinyl, which is shown in the following formula I: # imgabs0 #, in the formula I, R1-R5 are respectively and independently hydrogen, deuterium, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C5-C30 heteroaryl, a and b are respectively and independently selected from integers of 0-5, c is selected from integers of 0-4, d is selected from integers of 0-8, e is selected from integers of 1-6, at least one R5 is deuterium, and at least one R5 is hydrogen, deuterium, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C5-C30 heteroaryl. The substituent group is selected from at least one of the following atoms or groups: deuterium, hydroxyl, cyano, monodeuterium methyl, dideuterium methyl, trideuterium methyl, C1-C4 linear chain or branched chain alkyl, C6-C18 aryl and C5-C24 heteroaryl. The dibenzofuran directly connected with the triazine group is completely deuterated, so that the chemical stability, the photoelectric stability and the thermal stability of the material structure are greatly improved, the stability of a device is improved, and the service life is further prolonged.

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.

The application relates to a high-color-purity near-ultraviolet hot exciton compound with circular polarization properties and application in preparation of circular polarization organic electroluminescent devices, and belongs to the technical field of organic photoelectric materials. The electroluminescent material is a high-color-purity near-ultraviolet hot exciton compound with circular polarization properties. Two pairs of near-ultraviolet enantiomers are successfully designed and synthesized by combining a chiral group binaphthol, a weak donor dithiophene and a weak donor dibenzofuran, and an acceptor benzonitrile. The two pairs of near-ultraviolet enantiomers all show obvious circular polarization luminescence properties and high fluorescence quantum yields. Electroluminescent devices prepared based on the enantiomers all show near-ultraviolet emission, and the CIE coordinates are (0.168, 0.040) and (0.166, 0.040) respectively, and the external quantum efficiencies are 4.3% and 3.4% respectively. The application provides a new perspective for developing near-ultraviolet hot exciton materials with circular polarization luminescence and high color purity, and is favorable for directly realizing 3D and wide color gamut display in the future.

The present disclosure relates to the field of organic electroluminescent materials. An aromatic amine compound and an organic electroluminescent device and an electronic apparatus containing the same are provided. In the aromatic amine compound of the present disclosure, aryl is connected to the 1-position of dibenzofuran (or dibenzothiophene) and arylamine is connected to the 2-position. This method ensures that a benzene ring connected to a nitrogen atom contains ortho substituted aryl, which can improve the mobility of molecules. By changing the conjugated group of substituents to adjust the injection and transport balance of holes between a hole transport layer and an luminescent layer, the luminous efficiency of the device is improved.

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 a bis-dibenzofuran compound and a luminescent device thereof. The compound provided by the invention has a structure as shown in a formula (I). The compound has a bis-dibenzofuran mother nucleus and a structure similar to bridged biphenyl, has high thermal stability, high chemical stability and high carrier transport property, and also has proper singlet state, triplet state and molecular orbital energy level and high light-emitting quantum efficiency, and when the compound is used as a main body material, a light-emitting device generally has more excellent performance, and the application prospect is wide. The driving voltage, the luminous efficiency and the service life are obviously improved. Therefore, the compound is an organic electroluminescent device material with good performance.