210 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 invention belongs to the field of organic electroluminescence, and discloses an organic electroluminescence material as well as a preparation method and application thereof. The structure of the organic electroluminescent material is as shown in a chemical formula I: # imgabs0 #. According to the organic electroluminescent material compound provided by the invention, an aryl-substituted dibenzofuran group and a triarylamine group are bridged through a naphthylene group to form a mother nucleus main body, the rigid dibenzofuran structure can effectively enhance the structural stability, and the existence of the triarylamine group can improve the hole transport efficiency of the material; furthermore, the naphthylene group is bridged between the two main body structures, so that a more efficient conjugated system can be formed, the electron mobility of the whole material is improved, and the device has high luminous efficiency and long service life, and can maintain lower driving voltage at the same time.

The invention discloses a high-color-purity near ultraviolet heat exciton compound with circular polarization property and application thereof in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The electroluminescent material disclosed by the invention is a high-color-purity near ultraviolet heat exciton compound with circular polarization property, and two pairs of near ultraviolet enantiomers are successfully designed and synthesized by combining a chiral group binaphthol, a weak donor dibenzothiophene, dibenzofuran and an acceptor cyanophenyl; the compounds show obvious circular polarization luminescence property and high fluorescence quantum yield. The electroluminescent devices prepared based on the enantiomers all show near ultraviolet emission, CIE coordinates are respectively (0.168, 0.040) and (0.166, 0.040), and the external quantum efficiencies are respectively 4.3% and 3.4%. According to the near ultraviolet heat exciton material, a new visual angle is provided for developing the near ultraviolet heat exciton material with circular polarization luminescence and high color purity at the same time, and 3D and wide color gamut display can be directly achieved in the future.

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 electroluminescent devices, in particular to an organic metal iridium complex, a preparation method of the organic metal iridium complex, a luminescent material and an organic electroluminescent device. The organic metal iridium complex is selected from a compound shown in the following structural formula: # imgabs0 #, wherein R1 to R14 are respectively and independently selected from any one of hydrogen, deuterium, tritium, halogen, cyano, trimethyl silicon, trimethyl germanium, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C3-C8 cycloalkyl, substituted or unsubstituted C6-C20 aryl and substituted or unsubstituted 4-membered to 8-membered heterocyclic radical; the number of R10 on a benzene ring of dibenzofuran in the formula 1 is 1 or 2; s1 is selected from substituted or unsubstituted dibenzofuran, and S1 is fused with any position on a benzene ring of adjacent dibenzofuran. The organic metal iridium complex is low in synthesis cost, simple in synthesis process and difficult to purify, and an organic electroluminescent device formed by the organic metal iridium complex is high in luminous efficiency, long in service life and low in driving voltage.

The invention discloses a doping material for an organic electroluminescent layer, a preparation method and an organic electroluminescent device, a compound in the doping material adopts a specific structure, phenyl dibenzofuran groups at specific positions are introduced on dibenzofuran, and some groups are added, so that the doping material is prepared. According to the present invention, the doping material compound changes the molecular space structure, the electrochemical characteristics of the compound are adjusted, the dipole moment of the intermolecular structure is improved, the prepared compound is used as the light emitting layer doping material in the organic electroluminescent device, the driving voltage is significantly reduced, and the light emitting efficiency and the service life are significantly improved.

The invention provides a compound, a light-emitting device, a display substrate and a display device, the structural formula of the compound is as shown in a general formula (1): # imgabs0 #, the structural formula of G is as shown in a general formula (2), and two wavy lines respectively represent connection positions of G with a triazine structure and L in the general formula (1); the proportion of the electron cloud of the LUMO energy level of the compound on G is 3%-60%; x is O, S, C (R1) (R2) or N (R3); a is phenyl or naphthyl, and Het is substituted or unsubstituted dibenzofuran at least containing one N atom, substituted or unsubstituted dibenzothiophene at least containing one N atom, substituted or unsubstituted benzodibenzofuran at least containing one N atom, and substituted or unsubstituted benzodibenzothiophene at least containing one N atom.

Provided are an organic compound having a structure shown in formula 1, an organic light-emitting device comprising the compound, and an electronic device. The compound comprises a parent nucleus structure formed by fusing 7H-benzo[C]carbazole with dibenzofuran or dibenzothiophene by means of a pyrrole ring. When used as a hole transport host material in a mixed host material, the compound can improve the carrier balance in a light emitting layer, broaden a carrier recombination area, improve the exciton generation and utilization efficiency, improve the light-emitting efficiency of the device, and prolong the service life of the device.

The present invention discloses a blue luminescent compound, a blue luminescent composition, and an organic electroluminescent device, display device and lighting device comprising the blue luminescent compound or blue luminescent composition. The blue luminescent compound is selected from one of the following structures. The blue luminescent compound provided by the present invention is used as a host material in a blue luminescent layer. A triplet-triplet fusion process (TTF effect) of the material is improved by using an α-naphthalene substituent. The theoretical exciton utilization rate of the material is increased to 62.5%. The electron transmission rate of the material is improved by introducing an oxygen atom with a large electronegativity, thereby improving the carrier balance. Furthermore, by deuteration of at least part of naphthyl and an anthracene nucleus and combination with semi-deuterated dibenzofuran, the thermal stability of the material is significantly enhanced and at the same time an exciton energy rise caused by vibration in the material is reduced, thereby weakening the problems of damage and deterioration of a material in an adjacent layer by excitons, so that the lifetime of the organic electroluminescent device can be significantly improved, and defects in the prior art are overcome.

The present invention discloses a luminescence assisting material, the general structural formula of which is shown in Chemical Formula 1: and a preparation method of the above luminescence assisting material and an electroluminescent device containing the same. By introducing triarylamine functional groups, the present invention greatly improves the hole transport efficiency. The amine unit has steric hindrance to prevent electrons from overflowing. Moreover, by introducing a benzodibenzofuran or benzodibenzothiophene structure, the molecular symmetry is reduced, the conformational isomers of the molecule are increased, and the molecule has a rigid planar structure, so that the molecules are not easily crystallized or aggregated, and the yield of manufacturing the organic EL device is improved.

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.

A highly unsaturated fatty acid or a highly unsaturated fatty acid ethyl ester that has been produced using as a feedstock oil a fat or oil that contains highly unsaturated fatty acids as constituent fatty acids and which has been reduced in the contents of environmental pollutants, wherein among the dioxins contained, polychlorinated dibenzoparadioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are contained in amounts of less than 0.05 pg-TEQ / g and coplanar PCBs (Co-PCBs) in amounts of less than 0.03 pg-TEQ / g. Also disclosed is a method for producing the highly unsaturated fatty acid or highly unsaturated fatty acid ethyl ester by the steps of removing free fatty acids and environmental pollutants by thin-film distillation from a feedstock oil, ethyl esterifying the resulting fat or oil, and refining the same by rectification and column chromatography.

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 invention discloses a production process method of o-phenylphenol, which comprises the following steps: by taking cyclohexanone as a raw material, sequentially carrying out dehydration reaction and dehydrogenation reaction through a fixed bed reactor, carrying out post-treatment, and adopting a rectification-melt crystallization coupling refining continuous production process to prepare high-purity o-phenylphenol, and meanwhile, byproducts including biphenyl and dibenzofuran. According to the method, the cyclohexanone and the water are separated by taking magnesium nitrate as a dehydrating agent, so that the environmental protection pressure is reduced, the cyclohexanone is recycled and reused, and the production cost is reduced. Compared with a petroleum ether recrystallization refining process, the rectification-melt crystallization coupled refining process is adopted, so that a petroleum ether recovery procedure is omitted while continuous production is realized, the production process is simplified, and the explosion risk is reduced.

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.

An organic light-emitting device including a compound of Chemical Formula 1 and a compound of Chemical Formula 2:wherein: X1 is O or S; Cy1 is a substituted or unsubstituted dibenzofuran or a substituted or unsubstituted dibenzothiophene; Ar1 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; and the other substituents are as defined in the specification;where Ar2 is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; Ar3 is Chemical Formula A, and Z10 or Z11 of Chemical Formula A is linked to L2 of Chemical Formula 2:where X2 is O or S; Cy2 is a substituted or unsubstituted benzene or a substituted or unsubstituted naphthalene; and the other substituents are as defined in the specification.

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 invention provides a green phosphorescent host material and an organic electroluminescent device, and belongs to the field of electroluminescent materials, the structural general formula of the green phosphorescent host material is a chemical formula I. The green phosphorescent host material provided by the invention takes a rigid dibenzofuran group or dibenzothiophene group as an intermediate bridging group; a carbazole group and a triazine group are respectively connected to the first position and the fourth position of a dibenzofuran group or a dibenzothiophene group, and the structure can effectively improve the hole and electron transmission capability, enables holes and electrons to reach a balance state, enables a material device to maintain low driving voltage, and has high luminous efficiency and long service life.

A compound is provided that has a formula M(LA)m(LB)n, having the structure of Formula II,where LB is a different ligand from LA. In Formula II, M is Ir; m is 1 or 2, and m+n is 3; R is hydrogen, deuterium, alkyl, cycloalkyl, or a combination; each R1 and R2 is independently hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; and LB is selected from a variety of phenyl-imidazole and pyridinyl-dibenzofuran the ligands. OLEDs and consumer products containing the compound are also provided.

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 present invention relates to a compound and an organic electroluminescent element comprising the same. The present invention relates to: a novel dibenzofuran-based compound having excellent thermal stability, carrier transport ability, light-emitting ability, and the like; and an organic electroluminescent element having a low driving voltage and improved luminous efficiency, lifespan characteristics, and the like by comprising the same as a material of one or more organic material layers.

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.