226 results about "Fluorene" patented technology

The invention provides a fluorenyl alcohol derivative which can be used as an antibiotic adjuvant with a broad-spectrum synergistic effect. According to the compound, bacteria outer membrane asymmetric protein MlaC and phospholipase A1 PldA are taken as targets, and a series of fluorenyl alcohol derivatives targeting the bacteria outer membrane asymmetric protein MlaC and phospholipase A1 PldA are obtained through screening. The preferable compound WTU-15 can improve the antibacterial activity of antibiotics such as polymyxin, cefepime, tetracycline and the like on negative bacteria such as sensitive and drug-resistant escherichia coli, salmonella, klebsiella pneumoniae, acinetobacter baumannii and the like, and can also improve the in-vivo treatment effect of cefepime on mice infected by the drug-resistant acinetobacter baumannii. And the visceral organs of the mice survived after administration have fewer bacteria, and the mice are better after being healed. Normal physiological and visceral organ functions of the mouse are not affected by single and continuous administration of the WTU-15.

The invention provides a compound with an electron transmission function, an organic electroluminescent device containing the compound and application of the compound, the structure of the compound takes 9-alkyl-9-phenyl fluorenyl, phenanthryl and a triazine group as main components, the 9-alkyl-9-phenyl fluorenyl is one of core structures, fluorene is a polycyclic aromatic hydrocarbon with better planarity, and the triazine group is one of the core structures. Alkyl and phenyl are introduced to the ninth site to generate strong spatial repulsive force with a fluorene ring, a three-dimensional and non-planar propeller-shaped structure is formed, and the non-planar structure can effectively inhibit close packing of molecules in a solid state, so that concentration quenching and excimer formation caused by pi-pi packing are prevented, and the stability of the fluorescent probe is improved. And moreover, the rigid and non-planar structure can also effectively improve the thermal stability of the material, and the service life of the device is prolonged. The compound provided by the invention is used as an electron transport layer and a hole blocking layer in a light-emitting device, so that the device has low driving voltage, high luminous efficiency and long service life.

The invention relates to the technical field of preparation of organic photoelectric materials, in particular to a boron-nitrogen compound and an organic electroluminescent device comprising the same. The boron-nitrogen compound disclosed by the invention has good electron and hole receiving capability, and interaction among luminescent molecules can be effectively inhibited by introducing large-steric-hindrance azafluorene / benzfluorene / azabenzfluorene / silafluorene / germanium heterofluorene and other groups. The energy transmission performance between a subject and an object or a sensitizer can be improved by a large conjugated spiro structure unit, an sp2 aza-aromatic ring and other structures. Specifically, the boron-nitrogen compound provided by the invention is used as a functional layer, especially as an organic electroluminescent device manufactured by a luminescent layer, the current efficiency is improved, the lighting voltage is reduced, and meanwhile, the service life of the device is greatly prolonged. Therefore, after most electrons and holes are compounded, energy is effectively transferred to the boron-nitrogen compound, so that high luminous efficiency is realized.

A resin composition includes 100 parts by weight of a thermosetting resin, 10 parts by weight to 40 parts by weight of a fluorene-containing compound and 210 parts by weight to 400 parts by weight of silica. The resin composition may be used to make various articles, including a resin film, a prepreg, a laminate or a printed circuit board, and at least one or more of the following properties can be improved, including PCT water absorption ratio, dielectric constant, dissipation factor, copper foil peeling strength, thermal conductivity and glass transition temperature.

The invention belongs to the technical field of biosensing of organic electrochemical transistors, and particularly relates to an organic electrochemical transistor based on a spirobifluorene polymer as well as a preparation method and application of the organic electrochemical transistor. An active layer of the organic electrochemical transistor is composed of poly [benzo [2, 1, 3] thiadiazole-4, 7-diyl-[5-[3, 6-bis (octyloxy)-9, 9 '-spirobis [9H-fluorene]-2-yl]-1, 3-phenylene]], an ionic gel layer is prepared by mixing PVDF-HFP, EMIM TFSI and Li TFSI, and a gate electrode is modified with MnO2 nanoparticles and poly [benzo [2, 1, 3] thiadiazole-4, 7-diyl-[5-[3, 6-bis (octyloxy)-9, 9'-spirobis [9H-fluorene]-2-yl]-1, 3-phenylene]-1, 3] thiadiazole-4, 7-diyl-[5 and 2, 3-phenylene]]. The organic electrochemical transistor can be used for detection of hydrogen peroxide, is high in detection sensitivity, good in selectivity and wide in application range, and provides a new solution for detection of hydrogen peroxide.

The application belongs to the technical field of automobile intelligent display and polymer optical material, and relates to a front windshield anti-reflection film for automobile AR-HUD and a preparation method thereof. The anti-reflection film comprises modified optical acrylic resin, 9,9-bis(4-hydroxyphenyl) fluorene, nano-silica sol, ultraviolet absorber, light stabilizer and leveling agent. The modified optical acrylic resin is modified by introducing o-diphenol structural unit, aryl boronic acid structural unit, beta-cyclodextrin structural unit and adamantane structural unit into the acrylate base structure to form a dynamic borate ester bond and a host-guest inclusion synergistic topological network structure through free radical copolymerization. The anti-reflection film significantly improves the reflection efficiency of the target wave band of AR-HUD while maintaining high visible light transmittance, and exhibits excellent optical stability and double image control ability in a humid heat environment, and is suitable for the field of optical functional film of automobile front windshield.

The application provides a preparation method of a diphenylfluorene polyether. The method uses diphenylfluorene as a substrate, butylene oxide as an epoxide monomer, toluene as an organic solvent, and under the action of a composite catalyst, reacts at 110-200 DEG C for 2-6 hours to obtain the diphenylfluorene polyether. The composite catalyst is obtained by reacting a porous aromatic skeleton with a bromoalkyl quaternary ammonium salt to obtain a quaternary ammonium salt functionalized porous aromatic skeleton, and finally, a basic catalyst is limitedly encapsulated in the pore channel of the quaternary ammonium salt functionalized porous aromatic skeleton by electrostatic attraction. The catalyst of the method can be recycled and reused, and the yield retention rate is greater than or equal to 92% after the composite catalyst is used for 5 cycles, and the method is suitable for optical display, high-frequency circuit board, semiconductor packaging and other fields.

This invention discloses a method for preparing sulfonamide-modified benzo[a]fluorene-5-one derivatives, using 1,7-enyne and N Using sulfonylaminopyridine salts as raw materials, a series of sulfonated benzo[a]fluorene-5-one compounds were successfully synthesized by catalyzing the sulfonation / cyclization tandem reaction of 1,7-enynes under photocatalytic conditions. This method has excellent functional group tolerance and high economic applicability.

The invention provides thermochromic microcapsules, thermochromic silica gel, a preparation method of the thermochromic silica gel and a physiotherapy pad. The thermochromic microcapsule comprises a core material and a wall material coating the outer surface of the core material, and the core material comprises stearic acid, crystal violet lactone and bisphenol fluorene. The wall material is formed by in-situ polymerization of an amino resin prepolymer on the surface of the core material. The bisphenol fluorene has a fluorene ring, and the fluorene ring is of a large-size and flat structure, so that the rigidity of bisphenol fluorene molecules is high. When the amido resin prepolymer is subjected to in-situ polymerization on the surface of the core material to form the wall material, part of bisphenol fluorene molecules can be embedded into a cross-linked network of the amido resin, and the rigid bisphenol fluorene molecules can well limit movement and rotation of amido resin polymer molecular chains; besides, in the polymerization process, bisphenol fluorene molecules can serve as cross-linking points to react with the amino resin prepolymer, different polymer chains are effectively connected, the cross-linking density of the wall material is improved, and the bisphenol fluorene molecules can effectively improve the mechanical strength and hardness of the wall material.

The invention discloses a high-temperature-resistant liquid crystal polymer substrate for ultrathin flexible display, which belongs to the technical field of flexible display and comprises a modified liquid crystal polymer and a functional additive dispersed in the modified liquid crystal polymer. The modified liquid crystal polymer is prepared by polymerizing a monomer composition, and is specifically prepared from 38 to 42 parts of p-hydroxybenzoic acid, 28 to 30 parts of 4, 4 '-biphenol, 5.6 to 6.0 parts of terephthalic acid, 4.4 to 5.0 parts of 2, 6-naphthalic acid, 2.7 to 3.3 parts of isophthalic acid, 9 to 11 parts of 2, 2-bis (3, 5-difluoro-4-hydroxyphenyl) hexafluoropropane, 4.5 to 5.5 parts of N, N'-dihydroxypyromellitic diamine, 9 to 11 parts of 9, 9-bis [4-(4-methoxycarbonyl phenoxy) phenyl] fluorene and 1, 2-bis (4-(4-methoxycarbonyl phenoxy) phenyl] fluorene. The component A is prepared from 5.5 to 6.5 parts of 1, 4-cyclohexanedimethanol; the functional additive comprises an azobenzene derivative, a hot acid generator and a hydrogen bond enhancer; through the synergistic effect of a specific monomer combination, a functional additive and an optimization process, the technical bottleneck that heat resistance, transparency, dimensional stability and flexibility of an existing material are difficult to consider at the same time is broken through.

To provide a photosensitive resin composition capable of forming a cured product which hardly becomes cloudy even in a high-temperature and high-humidity environment and can maintain high transmittance, a cured product obtained by curing the photosensitive resin composition, a cured film or a microlens composed of the cured product, and an image display device including the cured product or the microlens.SOLUTION: The photosensitive resin composition contains (A) an alkali-soluble resin, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the alkali-soluble resin (A) is a reaction product of a bisarene fluorene compound (A1), an ethylenically unsaturated group-containing monomer (A2) and an acid anhydride (A3), and the acid anhydride (A3) contains two or more compounds selected from compounds represented by the following general formulae (A3-1) to (A3-3).SELECTED DRAWING: None

The invention belongs to the field of thin film capacitors and related dielectric materials, and particularly discloses an all-organic composite material as well as a preparation method and application thereof, and the all-organic composite material comprises the following components in percentage by mass: 98.00 wt%-99.75 wt% of fluorene polyester and 0.25 wt%-2.00 wt% of hexacyanohexaazabenzophenanthrene. The preparation method comprises the following steps: respectively adding fluorene polyester and hexacyanohexaazabenzophenanthrene into an organic solvent, fully stirring and dissolving, and ultrasonically mixing to obtain a uniformly mixed solution; uniformly coating a substrate with the mixed solution, heating, carrying out vacuum annealing, and stripping to obtain the fluorene polyester / hexacyanohexaazabenzophenanthrene composite film. According to the invention, the charge-discharge efficiency and discharge energy density of the polymer under high temperature and high electric field are improved, the technical problems of high leakage loss and low charge-discharge efficiency of the existing polymer film are solved, and large-scale industrial production is easy to realize.

The invention relates to the technical field of high-frequency and high-speed substrate resin and packaging materials of microelectronic devices, and particularly discloses hydrocarbon resin of dibenzocyclobutene fluorene and derivatives thereof and a preparation method of the hydrocarbon resin, and the hydrocarbon resin is prepared by mixing 9, 9-disubstituent-9H-fluorene and / or the dibenzocyclobutene fluorene derivatives according to a specific proportion, adding a solvent, and stirring to obtain the hydrocarbon resin of the dibenzocyclobutene fluorene and the derivatives of the dibenzocyclobutene fluorene and the derivatives of the dibenzocyclobutene fluorene. And carrying out a thermocuring reaction to obtain the product. The dibenzocyclobutene fluorene derivative is prepared by carrying out Heck reaction on 9, 9-disubstituent-9H-fluorene and halogenated benzocyclobutene under the catalysis of a base catalyst and a modified palladium catalyst, the prepared hydrocarbon resin has very low dielectric constant and dielectric loss and higher softening point and peel strength, and can better meet market requirements.

The invention provides a polyester resin, a resin composition, a curable resin composition, a cured product, a prepreg, a circuit board, a build-up film, a semiconductor sealing material, and a semiconductor device. The present invention addresses the problem of providing a polyester resin, a resin composition, a curable resin composition, and a cured product thereof that can exhibit low dielectric loss tangent and low thermal expansion. A polyester resin as a solution comprising (A) an aromatic polycarboxylic acid or a halide thereof, (B) a monohydroxy aromatic compound, and (C) a polyhydroxy aromatic compound containing fluorene in the structure thereof.

The application belongs to the technical field of high-frequency high-speed materials for electronic packaging, and particularly relates to a low-dielectric acenyl copolymer resin for M9 copper-clad plate and an ATRP preparation method thereof. A two-step method is used for full-process ATRP active controlled polymerization, and the two-step method comprises the following steps: S1, a single-end active bromine end group is prepared on a norbornene macromolecular initiator by ATRP polymerization with 3-bromocyclohexene as an ATRP initiator, and the length and structure of the norbornene segment are controlled; and S2, ATRP controlled copolymerization of acenylene monomers and divinylbenzene crosslinking monomers is carried out through the norbornene macromolecular initiator to obtain an acenyl copolymer resin.

The invention relates to a polymer based on a phenyl spirofluorene branched structure, an anion exchange membrane and a preparation method thereof, the polymer based on the phenyl spirofluorene branched structure is characterized in that the polymer has a repeating unit shown as a formula 1, the spirofluorene compounds are selected from phenyl spirofluorene compound monomers; r is selected from a nitrogen-containing heterocyclic group; x is the molar percentage of linear structure repetitive units in the polymer; y is the molar percentage of a branched structure repeating unit in the polymer; x is 95-99%, and y is 1-5%; x + y = 100%. The limitation that a traditional structure adopts a compound with a mirror symmetry or neutral symmetry structure for branching is broken through, and phenyl spirobifluorene is selected as a branching structure, so that the ion conductivity and long-period chemical stability of the anion exchange membrane are greatly improved.

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.

To provide a compound or a salt thereof which has excellent heat resistance (or stability) and can be produced with high productivity, a resin using the compound or the salt thereof as a raw material (a reactive component), and a method for producing them and use of them.SOLUTION: There is prepared a compound represented by the following formula (1) or a salt thereof. [wherein, R1 represents a substitutent, k1 represents an integer of 0 to 8, Z1a and Z1b each independently represent a substituted or unsubstituted arene ring, A1a and 1b each independently represent an alkylene group, m1a and m1b each independently represent an integer of 0 or more, R2a and R2b each independently represent an alkylene group having 3 or more carbon atoms, R3a and R3b each independently represent a hydroxyl group, a group [-ORh3] (wherein, Rh3 represents a hydrocarbon group) or a halogen atom.]SELECTED DRAWING: None

The invention belongs to the technical field of organic photoelectric semiconductor materials, and relates to a 2.7-bis (triphenylpyrimidine) fluorene compound and application thereof. The invention provides a 2.7-bis (triphenylpyrimidine) fluorene compound which has a linear symmetric structure, and the overall structure has high photoluminescence quantum efficiency and good film forming characteristics. The compound provided by the invention has the characteristic of amplified spontaneous emission, and can realize an extremely low ASE threshold value when being used as an optical gain medium. The 2.7-bis (triphenylpyrimidine) fluorene compound provided by the invention is easy to prepare and has a good application prospect in the fields of organic optical pump lasers and organic semiconductors.

The invention provides a light conversion adhesive film for sunlight wavelength conversion and application thereof, the light conversion adhesive film comprises a compound of formula I and a substrate transparent to visible light, the definition of each group in the compound of formula I is described in the specification, and the mass fraction of the compound of formula I in the light conversion adhesive film is 0.001%-3%. The light conversion adhesive film can be used for a solar cell so as to enhance the efficiency and the stability of the cell.

The invention belongs to the technical field of organic electroluminescent materials, and provides an electron transport material for an organic electroluminescent device and a preparation method of the electron transport material. The 9-alkyl-9-cyanogen-substituted aryl (or cyanogen-substituted nitrogen-containing heteroaryl) fluorene group with a substituent group enables the molecular structure to be twisted and the intermolecular interaction force to be weakened, cyanogen and pyridine enable the compound to have the electron-withdrawing property, electron transmission is facilitated, compounding of electrons and holes in a light-emitting layer is enhanced, and the light-emitting efficiency is improved. Aryl bridged triazine and pyrimidine six-membered nitrogen heterocycle are used for further improving the transmission performance of electrons, and as an electron transmission layer material of the organic electroluminescent device, the organic electroluminescent device has the characteristics of low driving voltage, high luminous efficiency and long service life.

The invention relates to the technical field of photoelectric materials, in particular to an asymmetric Y-series receptor and fluorene coupled compound and a preparation method and application thereof. The invention provides a fluorenyl-cyclic structure-asymmetric Y6 ternary fusion structure with a clear structure-function relationship. The rigid plane structure of fluorene provides excellent hole transport capability and inherent thermal form stability for molecules. The asymmetric Y6 can effectively regulate and control the energy level structure of molecules and enhance intramolecular charge transfer, and meanwhile, the asymmetric structure of the asymmetric Y6 is beneficial to inhibition of excessive crystallization and optimization of phase separation. The combination of the two can generate a synergistic effect. The fluorene unit can compensate voltage loss caused by introduction of bromine, and realizes wider spectral absorption and higher charge generation and transmission efficiency through combined action. A cyclic structure is introduced into a fluorene core, so that the LUMO energy level of the whole molecular receptor is effectively increased. The compound as an acceptor material is excellent in performance, has a three-dimensional charge transfer characteristic, and is beneficial to improvement of charge mobility.

The application discloses a copolymerized rigid structure polymer gas separation membrane, which is obtained by copolymerization of 2,3,5,6-tetrafluoro-p-phenyldinitrile and 4-(9,9'-spirobi[fluorene]-2-yl)-2,3,5,6-tetrafluorobenzonitrile as a double ligand and monomer 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane. The copolymerized rigid structure polymer gas separation membrane contains a large rigid polycyclic aromatic ring structure and a symmetrical twisted spiro ring structure on a main chain structure, increases the interchain distance and the segment rigidity in the membrane, limits the activity of the segment in the membrane, and the bulky aromatic ring can expand the segment, effectively inhibits the swelling and plasticizing effect of the high-pressure easily-condensed gas such as carbon dioxide on the membrane, enhances the anti-plasticizing ability, reduces the loss of the gas flux of the separation membrane, improves the physical aging performance of the membrane, and thus prolongs the service life of the membrane.

The invention provides a newly developed, inexpensive, and bench-stable Cobalt (II)-complexes encompassing phosphine-free N,N-bidentate ligand system. Particularly, the present invention utilizes Co(II)-complexes as catalyzing system for the sole purpose of studying the C-alkylation reaction through borrowing hydrogen strategy. The present invention also provides a catalytic methodology for selective alkylation, alkenylation of fluorene, and inactivated bulky indene utilizing alcohol under mild and benign conditions. In the present invention, fluorene and indene are alkylated using a range of substrates as an alkylating agent, such as primary and secondary aromatic, heteroaromatic, and aliphatic alcohols. The present invention indicates a sophisticated catalytic process with yields that range from high to exceptional yields and excellent regioselectivity of the C3-alkylated indenes.

The invention relates to a thermally activated delayed fluorescence rotaxane polymer as well as a preparation method and application thereof, and belongs to the technical field of organic photoelectric materials. According to the invention, alkyl chain fluorene is packaged in the vertical direction of difluorobenzophenone to form TADF macrocyclic molecules, and then bisphenol A and octanedioyl chloride are used for polymerization in a macrocyclic cavity. Due to the unique controllable motion property and mechanical interlocking structure of rotaxane, polyrotaxane has different mechanical, electronic and optical properties compared with a conventional polymer, so that the polyrotaxane is endowed with unique application, such as elastic tensile property, self-repairing property and the like. More importantly, due to the fact that the non-conductive pu material penetrates through a cavity of a large ring, when the material is applied to a device, a large number of rotaxane polymers are stacked, conductive benzene rings make contact with one another, the conductivity is not affected any more, and due to the fact that the pu material penetrates through the cavity, the insulativity of the pu material does not become the difficult problem that the electroluminescence efficiency of the device is affected any more any more.

The present specification relates to a fluorene-based compound of Chemical Formula 1, a coating composition including the fluorene-based compound of Chemical Formula 1, an organic light emitting device using the same, and a manufacturing method thereofwherein X1 to X4, L1, L2, R1 to R6, Ar1, Ar2, m1, m2, and n1 to n6 are described herein.

The invention discloses a perovskite cell and a preparation method thereof. The perovskite cell comprises a hole transport layer, a perovskite light absorption layer, and an interface passivation layer between the hole transport layer and the perovskite light absorption layer. The interface passivation layer contains a fluorenyl compound. The perovskite cell provided by the invention adopts a fluorenyl compound small molecule as a molecular bridge to connect the hole transport layer and the perovskite layer, and the scheme has the following advantages: (1) the efficiency and the stability are improved; (2) optimizing interface contact; (3) passivating defects; and (4) optimizing energy level arrangement. In conclusion, by adopting the YTA as the molecular bridge, the interface contact characteristic between the perovskite layer and the hole transport layer in the perovskite solar cell can be improved, so that the efficiency and the stability of the perovskite and the related laminated solar cell are improved.

The present invention provides a novel compound and an organic light-emitting device comprising the same, in which a rigid fluorene-based substituent is introduced into 1,10-phenanthroline having a non-shared electron pair. When the compound is applied to one or more organic layers of an electron transport layer (ETL), a hole blocking layer (HBL), and an N-type charge generation layer (N-CGL), the compound enables the implementation of low voltage, high efficiency, and long life of an organic light-emitting device.

The application provides a compound with an electron transport function, an organic electroluminescent device containing the same and application, the structure of the compound mainly comprises a 9-alkyl-9-phenylfluorenyl group, a phenanthryl group and a triazine group, the 9-alkyl-9-phenylfluorenyl group is one of the core structures, the fluorene itself is a condensed ring aromatic hydrocarbon with good planarity, the alkyl group and the phenyl group introduced at the 9th position generate strong steric repulsion with the fluorene ring itself, forming a three-dimensional, non-planar 'propeller' structure, the non-planar structure can effectively inhibit the close packing of molecules in a solid state, thereby preventing concentration quenching and formation of an excimer caused by pi-pi stacking, achieving higher solid-state light-emitting efficiency, and the rigid, non-planar structure can also effectively improve the thermal stability of the material and improve the service life of the device. The compound of the application can be used as an electron transport layer and a hole blocking layer in a light-emitting device, so that the device has low driving voltage, high light-emitting efficiency and long service life.

The application relates to the technical field of film materials, and discloses a kind of tear-resistant and impact-resistant CPP film and a preparation method thereof.The CPP film is prepared by mixing, extruding and cooling and shaping processes using polypropylene as a base material and maleic anhydride grafted polypropylene and functional fiber additives as auxiliary materials.The functional fiber additives are prepared by modifying dendritic macromolecules on the surface of bamboo fibers.The macromolecules can form an interwoven network structure with polypropylene molecular chains, and the bamboo fibers can exist in the CPP film in the form of a crosslinked core.On the one hand, the bamboo fibers can be efficiently utilized to enhance the tear resistance of the CPP film by pulling and stretching, and on the other hand, the crosslinked network structure can effectively improve the density of the CPP film, and the macromolecule structure also contains a rigid fluorene ring, which can make the crosslinked network molecular chain more stable, thereby effectively improving the impact resistance of the CPP film.