452 results about "Fluorene" patented technology

This invention discloses a fluorene-based organic small molecule hole transport material and its applications. The general structural formula of the fluorene-based organic small molecule hole transport material is as follows: where n = 1-4, and R represents the hole transport capacity. This fluorene-based organic small molecule hole transport material is used as an undoped hole transport material in perovskite solar cell devices. By introducing dicarboxylic acid groups onto the fluorene-based organic small molecule hole transport material, when used in an inverted perovskite solar cell device, it can form chemical bonds with the hydroxyl groups of the glass conductive substrate, forming a directionally aligned self-assembled layer on the surface of the glass conductive substrate. This effectively improves the charge transport capability at the interface and increases the photoelectric conversion efficiency of the perovskite solar cell device. Furthermore, since this perovskite solar cell device does not contain lithium salts, it exhibits high water and oxygen stability. In addition, the synthesis process of this fluorene-based organic small molecule hole transport material is simple, and the raw materials are inexpensive and readily available, making it highly valuable for practical applications.

The invention belongs to the field of dielectric materials and dielectric energy storage, and particularly relates to a fluorene polyester and polyaryletherurea blended dielectric energy storage polymer film and a preparation method thereof. The preparation method specifically comprises the following steps: adding fluorene polyester and polyaryletherurea into a solvent, fully dissolving to obtain a mixed solution, uniformly coating a substrate with the mixed solution, and then drying; and carrying out vacuum annealing on the dried film, and then carrying out curing treatment to strip the film from the substrate to obtain the fluorene polyester and polyaryletherurea blended dielectric energy storage polymer film, thereby improving the charge-discharge efficiency and high discharge energy density of the polymer under high temperature and high field, and solving the problems of high electric leakage loss and low cost of the existing polymer film. And the charging and discharging efficiency is low.

The invention discloses an organic compound containing naphthenic fluorene and dibenzofuran, a blue light-emitting composition containing the organic compound and an organic electroluminescent device. The structural general formula of the organic compound is as shown in formula I in the specification. According to the organic compound, electron-rich substituent naphthenic fluorene and electron-deficient substituent dibenzofuran are introduced to specific positions on a boron-nitrogen molecular skeleton, so that electron and hole recombination energy of guest material molecules can be reduced, the transmission capability of carriers on the guest material molecules is improved, the guest material molecules are prevented from becoming traps in carrier transmission, and the transmission efficiency of the guest material molecules is improved. Therefore, the carrier transport process of the light-emitting layer is improved to a certain extent, the guest material is prevented from forming polaritons, the light-emitting efficiency of the light-emitting layer is improved, the host material with the anthracene parent nucleus as the characteristic is used in cooperation, stacking and molecular orientation between the host and the guest can be improved, the carrier transport process and the light-emitting process are improved, and the light-emitting efficiency of the light-emitting layer is improved. Therefore, the organic light-emitting device provided by the invention has more excellent efficiency performance on a top-emitting device. # imgabs0 #

The invention discloses an organic electroluminescent material and an organic electroluminescent device and application thereof.The organic electroluminescent material can serve as a functional layer of the organic electroluminescent device, 9-alkyl-9-phenyl-9H-fluorene serves as a parent nucleus and is directly connected with arylamine on the parent nucleus, one side chain of the arylamine is aryl or heteroaryl, the other side chain of the arylamine is 1, 1, 4, 5, 6-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1, 3-tetramethyl-1 Compared with other compounds, the organic electroluminescent material compound disclosed by the invention has the advantages that the transverse electric leakage is small, and the phenomena that adjacent pixels are lightened, transverse crosstalk is generated between adjacent sub-pixels and color display is influenced due to transverse leakage current of the adjacent pixels in a device can be reduced. The organic electroluminescent material is used as a functional layer of the organic electroluminescent device, and the problems that color display is affected and picture display is abnormal due to transverse electric leakage of an OLED display device can be solved.

The invention relates to a high-efficiency near-ultraviolet heat exciton compound with circular polarization property and application of the high-efficiency near-ultraviolet heat exciton compound in preparation of a circular polarization organic electroluminescent device, and belongs to the technical field of organic photoelectric materials. The organic electroluminescent material is a high-efficiency near-ultraviolet heat exciton compound with circular polarization property, nine pairs of near-ultraviolet enantiomers are successfully designed and synthesized by combining chiral group binaphthol with fluorene with high luminous efficiency, and the nine pairs of near-ultraviolet enantiomers all show obvious circular polarization luminous property and high fluorescence quantum yield. The electroluminescent devices prepared based on the nine pairs of near ultraviolet enantiomers all show near ultraviolet emission, and the external quantum efficiency is 3.9%, 3.1%, 4.5%, 7.5%, 6.3%, 5.0%, 10.3%, 9.2% and 11.6% respectively. A new visual angle is provided for developing a near ultraviolet heat exciton material with circular polarization luminescence and high efficiency at the same time, and 3D and wide color gamut display can be directly achieved in the future.

The invention relates to the field of high polymer materials, and discloses a preparation method and application of high-temperature-resistant transparent modified polyester. The preparation method comprises the following steps: 1) blending 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene with diacid and dihydric alcohol, and carrying out esterification reaction; and 2) carrying out condensation polymerization on the esterification product to obtain the high-temperature-resistant transparent modified polyester with the glass transition temperature of more than 70 DEG C. According to the invention, 9, 9-di-[(4-phenylphenoxy) dibenzoic acid] fluorene is used as a modification monomer, and is copolymerized with other dibasic acids and dihydric alcohols to synthesize the modified polyester, and the modified polyester has high transparency and still has good mechanical properties and dimensional stability at high temperature. Therefore, the high-temperature-resistant transparent modified polyester is applicable to the application fields of optical films, optical lenses, reflective protective films, optical fibers or liquid crystal displays and the like.

The invention relates to the technical field of materials, and discloses silicone rubber for a flame-retardant functional cable accessory and a preparation method thereof.The silicone rubber is prepared by taking methyl vinyl silicone rubber as a base material and maleic anhydride grafted SEBS, a flame-retardant material and the like as auxiliary materials through mixing, extrusion and vulcanization processes, the flame-retardant material is of a fluorene-thioether alternating block structure, and the flame-retardant functional cable accessory has the advantages that the flame-retardant functional cable accessory is obtained; the structure of the flame retardant contains a large number of phosphorus flame retardant elements, fluorene heterocyclic rings can serve as a carbon source, sulfur and phosphorus elements can serve as acid sources, and secondary amine connected with the structure can serve as a gas source, so that the flame retardant has the characteristics of a three-source-integrated intumescent flame retardant, and can interact with a maleic anhydride grafted SEBS structure in the subsequent high-temperature vulcanization process; therefore, the purpose of effectively improving the flame retardant property of the silicone rubber by adding a small amount of the flame retardant is achieved, and the flame retardant long-term effect of the silicone rubber can be guaranteed. In addition, the fluorene heterocyclic ring is high in rigidity, and the mechanical strength of the silicone rubber can be improved to a certain extent.

The invention discloses a synthesis method of a super-crosslinked polymer, which comprises the following steps: putting a FeCl3 solid into a reactor, and keeping the reactor in an oxygen-free and water-vapor-free state; adding a mixed solution of a substrate and reactants into a reactor for first reaction to obtain a first reactant; adding methanol into the first reaction product for quenching, and filtering the quenched product to obtain a second product; washing and drying the second product to obtain a super-crosslinked polymer; wherein the substrate is prepared from 2, 7-bis (nitrogen carbazolyl)-9, 9-difluorofluorene or 2, 7-bis (nitrogen carbazolyl)-9, 9-dimethyl fluorene, or 2, 7-bis (nitrogen carbazolyl)-9, 9-difluorofluorene or 2, 7-bis (nitrogen carbazolyl)-9, 9-dimethyl fluorene; the reactant comprises dimethoxymethane or 1, 4-dimethoxybenzene, and the catalyst comprises a catalyst and a catalyst. The HCP material containing carbazole-fluorenyl is a porous polymer containing N and F atoms, and is an effective CO2 adsorbent. The invention provides a synthesis method of the substance for the first time, and the substance is applied to effective adsorption of CO2.

The invention relates to the technical field of high polymer materials, and discloses a low-VOC (volatile organic compound) polypropylene composite material and a preparation process thereof, the low-VOC polypropylene composite material comprises the following raw materials: polypropylene, maleic anhydride grafted polypropylene, fluorenyl silicone oil, benzophenone coated talcum powder, activated carbon, an antioxidant, a plasticizer and a lubricant; the interface bonding force between a siloxane long-chain flexible structure and a polypropylene matrix material is improved by preparing fluorenyl silicone oil, the thermal stability of the composite material is effectively improved by combining fluorene rings, thermal decomposition products are reduced, VOC components are physically adsorbed and captured through a multilevel porous structure of activated carbon, VOC volatilization can be effectively reduced, and the environmental protection capacity of the composite material can be enhanced. Meanwhile, benzophenone-coated talcum powder is added into the polypropylene composite material matrix, so that the wear resistance and ultraviolet resistance of the polypropylene composite material matrix are enhanced, and the service life of the polypropylene composite material is effectively prolonged.

The invention relates to the field of low dielectric materials, and particularly discloses a BCB-containing fluorene derivative as well as a preparation method and application thereof, and the derivative is specifically shown as follows: in substitution sites 1-10 of fluorene and / or fluorene derivative, substituent groups R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are independently selected from at least one of hydrogen atoms, alkyl groups and aryl groups, and the substituent groups R9 and R10 comprise at least one BCB group. According to the present invention, the BCB group is introduced to the R9 and / or R10 substituent group of the fluorene and / or the fluorene derivative, such that the obtained BCB-containing fluorene derivative has characteristics of good thermal stability and low dielectric property. Meanwhile, the performance of the fluorene derivative containing BCB can be accurately optimized by flexibly regulating and controlling the types of substituent groups, the number of BCB groups on R9 and R10 substituent groups and the structure of the substituent group on the fluorenyl group, so that the problem of meeting low dielectric materials in the fields of high-performance PCBs, electronic packaging and the like in the prior art is solved.

The purpose of the present invention to provide: a novel phosphorus compound; a method for synthesizing the compound; a flame retardant containing the compound; and a resin composition containing the compound and a resin component. The purpose of the present invention is to additionally provide: a prepreg using the resin composition; a resin-equipped metal foil; a thermosetting resin film; a metal-clad laminated board; a printed wiring board; and an adhesive. The present invention relates to a phosphorus compound represented by chemical formula (I), a synthesis method, and a use thereof. (In the formula, the R1's are the same or different and represent a hydrogen atom, a C1 to C10 alkyl group, a C2 to C10 alkenyl group, a C2 to C10 alkynyl group, or an aryl group optionally substituted with a C1 to C10 alkyl group or phenyl group; R2 represents a C1 to C10 alkyl group, a C2 to C10 alkenyl group, a C2 to C10 alkynyl group, or an aryl group optionally substituted with a C1 to C10 alkyl group or phenyl group, and when there are a plurality of R2's, the R2's may be the same or different; Y1 represents a phenylene group optionally substituted with a C1 to C10 alkyl group, a naphthylene group, or a group indicated by formula (A); and the n's are the same or different and represent an integer of 0-3.) (In the formula, the R3's are the same or different and represent a hydrogen atom, a C1 to C10 alkyl group, a C2 to C10 alkenyl group, a C2 to C10 alkynyl group, or an aryl group optionally substituted with a C1 to C10 alkyl group or phenyl group; and Y2 represents a single bond, a C1 to C15 alkylene group optionally substituted with a phenyl group, a C5 to C15 cycloalkylene group, a C5 to C15 cycloalkylidene group optionally substituted with a C1 to c10 alkyl group, a phenylene group, an adamantane-1,3-ylene group, an adamantane-2-ylidene group, an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, or a fluorene-9-ylidene group.)

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 relates to the technical field of high-performance polymer synthesis, in particular to a preparation method of polyaryletherketone, which comprises the following steps: S1, under the condition of inert gas, adding dihalogenated benzophenone and bisphenol fluorene into a solvent, uniformly mixing, adding alkali carbonate, and reacting under the condition of heating to obtain an oligomer; s2, adding aromatic diphenol into the system in the step S1 in batches, and carrying out temperature programming reaction to obtain a block copolymer; and S3, adding an end-capping reagent into the system to carry out end-capping reaction, and after the reaction is finished, carrying out post-treatment to obtain the polyaryletherketone. According to the preparation method of the polyaryletherketone, a feeding mode of gradient segmented feeding is adopted, a polymerization process of low-temperature pre-polycondensation and high-temperature chain extension copolymerization is developed, the reaction rate is controllable, sequence distribution is uniform, and product performance is stable. In addition, the preparation method can effectively reduce energy consumption and is more beneficial to industrial production.

The invention belongs to the technical field of stimuli-responsive materials, and particularly relates to a fluorene derivative as well as a preparation method and application thereof. The structural formula of the fluorene derivative is as shown in formula I. The fluorene derivative disclosed by the invention has a high-contrast three-color force-induced fluorescence discoloration property. The fluorescent powder has a green fluorescence emission characteristic under a room temperature condition, and the color of the fluorescent powder can be obviously changed when the fluorescent powder is subjected to different degrees of mechanical force. Specifically, after slight grinding treatment, the color of the fluorene derivative is changed from green to yellow, and the fluorene derivative emits light; and the heavy grinding operation is continued, the color is further converted from yellow to red to emit light, and the color can be recovered to the initial green under the fumigation of dichloromethane gas, so that the high-contrast three-color force-induced fluorescence discoloration is realized. Due to the unique property, the fluorene derivative has a wide application prospect in the fields of information encryption anti-counterfeiting technology, high-precision sensors, intelligent display equipment and the like. # imgabs0 #

The invention relates to a small molecular boron-10 carrying agent, a preparation method and application. The structural formula of the small molecule boron-10 carrying agent is shown as a formula (I). The invention also provides a preparation method of the small molecular boron-10 carrying agent, which comprises the following steps: carrying out condensation connection on a phenylboronic acid derivative and N-(2-aminoethyl) maleimide hydrochloride, and covalently coupling a boron drug to obtain a first intermediate; n < 2 >-(((9H-fluorene-9-yl) methoxy) carbonyl)-N < 6 >-(tert-butoxycarbonyl)-L-lysine, N-(2-aminoethyl) maleimide hydrochloride and a phenylboronic acid derivative are subjected to condensation connection, and a second intermediate is obtained; carrying out esterification connection on a selenium-containing compound and a DNA repair inhibiting compound to obtain a third intermediate; and carrying out condensation connection on the second intermediate and the third intermediate, and connecting the first intermediate to obtain the small molecule boron-10 carrying agent. The invention solves the problems of limited treatment effect and difficulty in inhibiting DNA damage repair in the existing BNCT. # imgabs0 # (I)

The invention discloses a low-loss resin composition containing active ester, a prepreg and a copper-clad laminate, the resin composition comprises the following main components by weight: 30-70 parts of epoxy resin, 30-70 parts of an epoxy curing agent, 0-3 parts of a curing accelerator, and 20-100 parts of a filler; wherein the epoxy curing agent is tetraphenol fluorenyl active ester; the prepreg is prepared by dipping glass cloth in a glue solution formed by the low-loss resin composition and baking the glass cloth in an oven at 80-200 DEG C for 1-20 minutes after dipping is completed, the copper-clad plate is prepared from the prepreg, fluorine-containing tetrafunctional active ester is synthesized through esterification reaction of tetraphenol fluorene and pentafluorobenzoyl chloride, and the fluorine-containing tetrafunctional active ester is used for preparing the copper-clad plate. A rigid fluorene ring structure is introduced, so that the thermal performance of the cured epoxy composite material is favorably improved; therefore, the invention effectively solves the problems that the existing resin composition for preparing the copper-clad plate is insufficient in heat resistance, and in order to meet the requirement of low polarity, the dosage of the filler is increased, the interfacial compatibility of the resin and the filler becomes poor, and the dielectric loss is further improved.

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 nylon composite materials, in particular to a low-warpage, high-toughness, hydrolysis-resistant, alcoholysis-resistant and weather-resistant nylon composite material and a preparation method thereof.The nylon composite material is prepared from, by weight, 20%-40% of modified glass fibers, 5%-15% of a toughening agent, 0.5%-2% of a weather-resistant agent, 0.5%-2% of a hydrolysis-resistant agent, 0.1%-1% of a processing aid and the balance nylon resin; the modified glass fiber is prepared by coupling a glass fiber through a hydroxyl silane coupling agent or an amino silane coupling agent and then carrying out in-situ polymerization reaction with 4, 4 '-difluorodiphenyl sulfone, dihydroxyl-terminated polyether modified silicone oil, bisphenol fluorene and biphenol; the method has the advantages that the dispersion uniformity of the glass fibers in the nylon matrix and the compatibility of the glass fibers and the matrix are improved.

The invention relates to a tetrafunctional fluorenyl acrylate resin monomer and a preparation method and application thereof, the resin monomer has the following structural formula: # imgabs0 #, OR is-O (CH2) 2OOC-CH = CH2 or-O (CH2) 2OOC-C (CH3) = CH2, and the substitution position on the fluorene ring structure is 2, 7 or 3, 6; the preparation method comprises the following steps: # imgabs 1 # mixing a compound as shown in a formula I with a water-carrying agent, an acid catalyst, an acrylic acid compound and a polymerization inhibitor, and carrying out heating reaction to obtain a tetrafunctional fluorenyl acrylate resin monomer; the obtained four-functional fluorenyl acrylate resin monomer can be used for preparing high-refractive-index brightness enhancement film glue. Compared with the prior art, (methyl) acrylic groups are dispersed, and efficient curing is facilitated. The raw materials are easy to obtain, the synthesis process and the post-treatment process are simple, the product conversion rate is high, industrial preparation is easy, and the application scene is wide.

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.

The invention discloses a preparation method of a high-entropy alloy type negative electrode material for a sodium ion battery. The preparation method comprises the following steps: grinding five kinds of metal powder of antimony powder, tin powder, bismuth powder, germanium powder, lead powder, iron powder, copper powder, nickel powder, aluminum powder and zinc powder and conductive carbon, performing high-energy ball milling, high-speed stirring dispersion, spray drying and annealing treatment in an inert atmosphere to obtain a negative electrode material, and preparing a negative electrode piece and a sodium ion battery from the negative electrode material and a binder. The binder comprises one or more of sodium alginate and a polyimide derivative, and the polyimide derivative is obtained by reacting 3-aminopropane-1-sulfonamide with 9, 9-bis (3, 4-dicarboxyphenyl) fluorene dianhydride. The preparation method is simple in process, low in cost and easy for large-scale production, and the prepared negative electrode material has multiple heterostructures and can effectively improve the conductivity.

The invention discloses a fluorenyl diphosphoric acid type self-assembled monomolecular layer hole transport material which takes a fluorene unit as a core and a diphenylamine group as a donor, and is a self-assembled monomolecular layer hole transport material with two phosphoric acid anchoring groups. The preparation method of the hole transport material comprises the following steps: (a) carrying out substitution reaction on 2, 7-dibromofluorene and dibromo-substituted alkane to obtain an intermediate I; (b) carrying out rearrangement reaction on the intermediate I and triethyl phosphite to obtain an intermediate II; (c) carrying out coupling reaction on the intermediate II and a diphenylamine derivative to obtain an intermediate III; and (d) mixing the intermediate III with a hydrolysis reagent, and carrying out hydrolysis reaction to obtain the fluorenyl diphosphonic acid type self-assembled monomolecular layer hole transport material. The invention also discloses an application of the material in a trans-perovskite solar cell. The hole transport material is low in synthesis cost and simple in route, has dual functions of hole transport and defect passivation, and has two phosphate groups to enhance the self-assembly strength and stability of the hole transport material.

The invention relates to the technical field of high-molecular polymers and surface chemical modification thereof, in particular to a low-dielectric-constant polyaryletherketone material and a preparation method thereof, and a flexible copper foil laminated structure and a preparation method thereof. The low-dielectric-constant polyaryletherketone material is obtained by taking a bisphenol monomer and difluorobenzophenone as reaction monomers and carrying out aromatic nucleophilic polycondensation reaction; wherein the bisphenol monomer is selected from a combination of C3-C8 normal or isomeric alkyl substituted hydroquinone and bisphenol containing at least one aryl group; the bisphenol containing at least one aryl group is selected from one or more of bisphenol AP, bisphenol BP, bisphenol Z and bisphenol fluorene; the low-dielectric-constant polyaryletherketone material forms a thin film, the surfactant treatment layer and the grafting layer are sequentially formed on the thin film, then the thin film is compounded with the copper foil, and the formed flexible copper foil laminated structure has high peel strength and low dielectric constant.

The invention provides a preparation method of polyaryletherketone resin for a 3D printing material, and relates to the technical field of high polymer materials, the polyaryletherketone resin is prepared by taking 4, 4-difluorobenzophenone, hydroquinone, biphenol and bisphenol fluorene as reaction raw materials, taking diphenyl sulfone as a solvent and taking carbonate of alkali metal as a catalyst through nucleophilic polycondensation reaction; the material has the advantages of high melting point, high glass transition temperature, high thermal decomposition temperature and low crystallization speed. According to the preparation method provided by the invention, a certain amount of bisphenol fluorene is added at the later stage of a polymerization reaction, so that on one hand, the introduction of a fluorenyl structure can further destroy the regularity of a molecular chain and reduce the crystallinity and the crystallization speed; on the other hand, the fluorenyl structure can be used for hindering chain segment movement, and the resin melting point can be increased.

The invention provides resin for an anti-reflection coating with a high extinction coefficient and a preparation method of the resin, the resin is prepared by free radical polymerization of styrene, glycidyl acrylate and isopropyl methacrylate, and fused ring structures such as anthracene, fluorene and pyrene are introduced into the resin structure. The PDI of the prepared resin can be within 2.5, the molecular weight distribution is narrowed, the small molecule proportion is reduced, the sensitivity of the resin in exposure and developing solvents is further improved, and the performance requirement of a bottom anti-reflection coating in the semiconductor manufacturing process can be met.

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.

The invention relates to polysulfone resin and a preparation method thereof. The structure of the polysulfone resin is shown as a formula (1), wherein n is more than 0 and less than 1. The polysulfone resin has a specific structure, bisphenol fluorene and bisphenol Z structures are creatively introduced into a traditional polysulfone resin structure, the glass transition temperature and light transmittance of the polysulfone resin can be improved at the same time, the polysulfone resin with high temperature resistance and high light transmittance is obtained, and therefore the application range of a polysulfone resin material can be further widened.