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161 results about "Polyfluorene" patented technology
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Polyfluorenes are a class of polymeric materials. They are of interest because similar to other conjugated polymers, they are currently being investigated for use in light-emitting diodes, field-effect transistors, and plastic solar cells. They are not a naturally occurring material, but are designed and synthesized for their applications. Modern chemistry has enabled adaptable synthesis and control over polyfluorenes that has facilitated use in many organic electronic applications.
Compound luminous layer and manufacturing method thereof, and white light organic electroluminescence device
ActiveCN103500803AHigh fluorescence efficiencyWide range of choicesSolid-state devicesSemiconductor/solid-state device manufacturingElectricityQuantum dot
The embodiment of the invention provides a compound luminous layer and a manufacturing method thereof, and a white light organic electroluminescence device, relates to the technical field of electroluminescence, and can be used for meeting the requirement of multiple color domains and increasing the brightness of the device simultaneously. The compound luminous layer comprises a first luminous layer and a second luminous layer, wherein the first luminous layer comprises polyfluorene or a polyfluorene derivative; the second luminous layer comprises quantum dots. The compound luminous layer is applied to organic electroluminescence devices.
Owner:BOE TECH GRP CO LTD
Methods to purify polymers
InactiveUS6894145B2Efficient removalImprove solubilityDyeing processPolymer dissolutionChemical reaction
The present invention discloses methods to remove impurities in polymeric materials in order to improve the opto-electronic characteristics of devices fabricated from these polymers. The polymers include but not limited to polyarylenes, polyarylenevinylenes, polyaryleneethylnylene, polyfluorenes, polyanilines, polythiophenes, polypyrroles, and any conjugated co-polymers. The methods involve the selection of a scavenger or chelating agent and use it to remove metallic impurities from the polymers. The methods involve dissolving the polymer in a suitable solvent, adding a scavenger, mixing to form a scavenger, containing phase, and finally separating the scavenger containing phase from the polymer phase. According to this invention, it is preferable for the selected scavengers to have functional groups which can chemically react with metallic species and form a coordination compound that is not soluble in a selected solvent. The selected scavenger can be used in a free stand form or carried by either organic or inorganic media.
Owner:XIAO STEVEN SHUYONG +1
Compound of nanostructures and polymer for use in electroluminescent device
A compound for use in an electroluminescent device, including 0.001% to 10% by weight of nanostructure and a polyfluorene polymer. The compound can be used as a light emitting layer of an EL device including a cathode, an anode, and the light emitting layer disposed between the cathode and the anode. The EL device can be manufactured by providing a substrate, providing an anode or cathode on the substrate, and depositing the emitting layer on the substrate. The compound can be manufactured by ultrasonically cutting nanostructures and mixing the nanostructures with a polymer, such as the polyfluorene polymer.
Owner:YAZAKI CORP
Methoxytriphenylamine-fluorene-containing copolymer, and preparation method and application thereof
InactiveCN103396533AGood light and heat stabilityImprove luminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingSolubility1,3-Propanediol
The invention provides a methoxytriphenylamine-fluorene-containing copolymer, and a preparation method and application thereof, relates to an organic electroluminescent material, a preparation method and application thereof, and aims to solve the problems that the existing polyfluorene electroluminescent polymer is low in light and heat stability, blue light emitted by the material is insufficient in saturation chroma and the solubility in organic solvent is poor. The methoxytriphenylamine-fluorene-containing copolymer provided by the invention is poly[2,7-(9,9-dioctylfluorene)-alternated-N-phenyl-N-(4-methoxyphenyl)aniline]. The preparation method comprises the following steps: 1, synthesizing a monomer from 4-methoxyaniline and 1-bromo-4-iodobenzene; and 2, synthesizing the methoxytriphenylamine-fluorene-containing copolymer from 9,9-dioctylfluorene-2,7-diboronic acid cis(1,3-propanediol)ester and the monomer. The polyfluorene luminescent material has favorable light and heat stability; the solubility in organic solvent can be up to 15-35%; and the material is applied to an electrogenerated blue light device, the emitted light approximates saturated deep blue.
Owner:HEILONGJIANG UNIV
Polyfluorene conjugated polymer with thiophene and other aromatic heterocycle at C9 side chain, and preparation method and applications thereof
InactiveCN101775123AGood film formingImprove thermal stabilityFinal product manufactureSolid-state devicesSide chainPolyfluorene
The invention discloses a polyfluorene conjugated polymer with thiophene and other aromatic heterocycle at C9 side chain, and a preparation method and applications thereof. The polyfluorene conjugated polymer with thiophene and other aromatic heterocycle at C9 side chain has the structural formula shown as the formula (I) or the formula (II), wherein R1, R2, R3 and R4 are selected from the group consisting of C1-C20 alkyl, alkoxy, phenyl or phenoxy; Ar1 and Ar2 are identical or different heterocyclic compounds containing at least one atom of the group consisting of sulfur, nitrogen and selenium; Ar3 is a heterocyclic compound containing at least one atom of the group consisting of sulfur and nitrogen; x is not less than 15 but not more than 85, y is not less than 15 but not more than 85; and n is a natural number. The polymer according to the invention has excellent film forming performance, thermal stability and chemical stability, includes outstanding carrier injection and transfer ability, and can be used for the preparation of polymer solar cells, electroluminescent devices or field effect transistors.
Owner:SOUTH CHINA NORMAL UNIVERSITY
Luminescent device, manufacturing method thereof and display panel
InactiveCN103779509AImprove thermal stabilityGood chemical stabilitySolid-state devicesSemiconductor/solid-state device manufacturingQuantum yieldQuantum dot
The invention discloses a luminescent device, a manufacturing method of the luminescent device and a display panel. By means of the manufacturing method of the luminescent device and the display panel, the manufacturing process of the luminescent device is simplified, and the performance of the luminescent device is improved. The luminescent device comprises a white light emitting layer, the white light emitting layer comprises polyfluorene blue light emitting materials, red light quantum dots and green light quantum dots, and the red light quantum dots and the green light quantum dots are mixed in the polyfluorene blue light emitting materials. The white light emitting layer is of a single film layer structure, the film can be formed once, respective preparation of a red luminescent layer, a green luminescent layer and a blue luminescent layer is not needed, and therefore the process of the luminescent device is simplified and the structure of the luminescent device is simple. Besides, the polyfluorene blue light emitting materials have high heat stability and chemical stability and have a high fluorescent quantum yield, so that the luminescent device is high in luminous efficiency.
Owner:BOE TECH GRP CO LTD
Dual-electron and dual-hole transport layers-based organic solar cell and preparation method thereof
The invention provides a dual-electron and dual-hole transport layers-based organic solar cell and a preparation method thereof, and belongs to the technical field of organic solar cells. The organic solar cell sequentially comprises an ITO conductive glass substrate, a PFN / polyfluorene material PFBT dual-electron transport layer, a PCDTBT:PCBM active layer, an MoO3 / graphene oxide dual-hole transport layer and a graphite anode from bottom to top. According to the method, an amphiphilic polyfluorene material PFBT with high conductivity and PFN are combined as the dual-electron transport layer; traditional inorganic transport layers of TiO2, ZnO and the like are replaced; interface contact with ITO is improved; interface composition is reduced; and the organic solar performance is improved. Meanwhile, MoO3 and graphene oxide are combined as the hole transport layer; a layer of graphite electrode is sprayed on the surface of the graphene oxide by an inkjet printing technology; the method is simple in use and suitable for large-area popularization; meanwhile, traditional materials of Au, Ag, Al and the like are replaced with graphite; and a metal-semiconductor contact does not exist, so that the interface is free of a schottky barrier; the energy loss in a device is reduced; and the performance of the device is improved.
Owner:JILIN UNIV
Composite film and production method thereof as well as photoelectric element and photoelectric device
ActiveCN103525406ASelectiveImprove uniformityLiquid surface applicatorsSolid-state devicesComposite filmFluorescence
The embodiment of the invention provides a composite film and a production method thereof as well as a photoelectric element and a photoelectric device, and relates to the field of manufacturing. The composite film has the advantage that the phenomena such as the agglomeration and the fluorescence quenching can be avoided. The composite film production method comprises the following steps: preparing a polyfluorene compound solution which comprises polyfluorene or polyfluorene derivatives; preparing a quantum dot solution; mixing the polyfluorene compound solution and the quantum dot solution together so as to prepare a mixed solution; removing a solvent in the mixed solution, and preparing the composite film.
Owner:BOE TECH GRP CO LTD
9-Aryl and bisayl substituted polyfluorenes
ActiveUS20060228576A1Facilitates electron injectionImprove performanceDischarge tube luminescnet screensElectroluminescent light sourcesArylPolyfluorene
A polymer formed from optionally substituted first repeat units of formula (I) wherein Ar is selected from (a) aromatic hydrocarbon substituted with at least one electron withdrawing group or electron withdrawing heteroaryl. The polymers have application in electroluminescent devices.
Owner:CAMBRIDGE DISPLAY TECH LTD
Novel polyfluorene derivative-polysilicofluorene and method for preparation thereof
InactiveCN1654496AImprove luminous performanceImprove stabilityLuminescent compositionsPolyfluoreneEthylene Homopolymers
The present invention belongs to the field of optoelectronic material technology, and is especially polysilico fluorene with the carbon atom in the ninth position in polyfluorene substituted with silicon atom and its preparation process. Industrial materials are made to pass through four high yield reaction steps to synthesize serical silico fluorene products, and the serical silico fluorene products are then are polymerized through Suzuki, Heck, Sonogashira, Yamamoto and other processes to obtain silico fluorene homopolymers and copolymers. These polymers have excellent light emitting performance and are efficient and stable light emitting polymer materials with latent excellent application foreground in the fields of electroluminescence, photovoltaic cell, non-linear optics and sensor.
Owner:FUDAN UNIV
Hyperbranched poly-fluorene material containing space steric hindrance group and manufacture method thereof
InactiveCN101245131AExacerbated distortionInhibit aggregationElectroluminescent light sourcesSolid-state devicesOrganic field-effect transistorPolyfluorene
The invention pertains to the technical field of organic and organometalic electro-active material, which more particularly relates to a hyperbranched polyfluorenes material comprising steric blockade and a preparation method thereof. The material introduces high blockade on the basis of hyperbranched polyfluorenes structure to distort considerately the synthesis molecular chain, thus efficiently inhibiting molecular aggregation, avoiding formation of excimer and fluorescence quenching, improving the material with luminous efficiency. As organic electro-active material with high inoxidability, thermal shock resistance and photostability, the material can be widely used in organic electronics industry such as organic / synthesis electroluminescent, photovoltaic cell, organic field-effect transistor and laser etc.
Owner:FUDAN UNIV
Aromatic Ether-Containing Fluorene Monomers, Processes for their Preparation and Polymerization Thereof
Novel aromatic ether-containing monomers are described along with processes for their preparation and their polymerization into corresponding aromatic ether-containing polyfluorenes. These polyfluorenes exhibited stable blue-emission and therefore have application in polymer light-emitting devices.
Owner:THE GOVERNORS OF THE UNIV OF ALBERTA
Polymer nanoparticles capable of detecting hypochlorous acid and copper ions as well as preparation method and application of polymer nanoparticles
ActiveCN106221107AExcellent ratio detectionDecreased fluorescence intensityFluorescence/phosphorescenceMethacrylateIsothiocyanic acid
The invention discloses polymer nanoparticles capable of detecting hypochlorous acid and copper ions. The polymer nanoparticles are novel polymer nanoparticles prepared by taking a polyethylene glycol monomethyl ether chain transfer agent, styrene, 2-aminoethylmethacrylate hydrochloride, rhodamine B isothiocyanate and a 9,9-dioctyl polyfluorene-benzothiadiazole alternate copolymer as raw materials. The polymer nanoparticles can realize high-sensitivity ratio fluorescence detection on the hypochlorous acid and the copper ions in a pure water solution. Compared with an existing fluorescence detection technology, the prepared polymer nanoparticles have a double-ratio detection function and good biocompatibility; a synthetic route is simple and a detection method is simple and convenient; the polymer nanoparticles are applicable to amplified synthesis and actual production application, and have a great application prospect in the technical fields including analytical chemistry, life science, environmental science and the like.
Owner:HUNAN UNIV OF SCI & TECH
Preparation method for carboxylic acid type polyfluorene/titanium dioxide nano-hybrid materials
ActiveCN104945858AObvious fluorescence quenching phenomenonPromote formationTitanium dioxideFluorescenceNano hybrid
The invention relates to a preparation method for carboxylic acid type polyfluorene / titanium dioxide nano-hybrid materials. The preparation method comprises the steps that a dibromo fluorene monomer which contains carboxyl is compounded, carboxylic acid type polyfluorene is compounded, and a sol-gel method is adopted to prepare the carboxylic acid type polyfluorene / TiO2 nano-hybrid materials. The preparation method has the advantages that the anionic type polyfluorene is compounded, the sol-gel method is adopted to prepare the carboxylic acid type polyfluorene / titanium dioxide nano-hybrid materials, the method is simple, the reaction condition is gentle, two-phase mixing is conducted to approach the molecular level, and the hybrid materials are facilitated to form a homogeneous system; according to the prepared carboxylic acid type polyfluorene / titanium dioxide nano-hybrid materials, an obvious fluorescence quenching phenomenon can be observed, separating and transmitting process of electric charges are generated on the interfaces of the polyfluorene and titanium dioxide particles, the film-forming property is good, and therefore the hybrid materials have potential application in the field of photoelectricity.
Owner:CHANGZHOU UNIV
OLED device
InactiveCN103413893AImprove quantum efficiencyImprove carrier transport abilitySolid-state devicesSemiconductor/solid-state device manufacturingQuantum efficiencyElectron injection
The invention provides an OLED device. The OLED device structurally comprises a substrate (1), a transparent anode (2), a hole injection layer (3), a luminescent layer (4), an electron injection layer (5) and a cathode (6), wherein the luminescent layer (4) is formed by host fluorescent materials and object phosphor materials in a doping mode, and polyfluorene materials which have both hole transport groups and electro-transport groups are adopted by the host fluorescent materials. The OLED device can effectively reduce barriers of hole injection and electron injection and has high quantum efficiency and carrier transport capability.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS
Preparation method of zinc oxide quantum dot modified polyfluorene blue polymer luminescent material
InactiveCN102295745AImprove luminous efficiencyImprove thermal stabilitySolid-state devicesSemiconductor/solid-state device manufacturingHeat stabilityPolyfluorene
The invention relates to a preparation method of a polyfluorene blue high-molecular luminescent material modified by zinc oxide quantum dots. The method comprises the synthesis of 1,4-di-n-butoxybenzene, the synthesis of 1,4-dibutoxy-2, 5-bis(bromomethyl)benzene, the synthesis of 1,4-dibutoxy phenyl-2,5-tri phenylphosphine bromine, the synthesis of 1,4- dibutoxy-2,5-divinyl benzene, the synthesisof 2,7-dibromofluorene, the synthesis of 2,7-dibromo-9,9-dioctyl benzene and the synthesis of a polymer-based nanocomposite. Compared with the prior art, the present invention has the following advantages that the preparation technology is simple and the cost is low; the heat stability of the polymer is excellent; the unique quantum confinement effect and the fluorescent characteristic of the added ZnO quantum dots enable the polymer fluorescent emission spectrum to make an obvious blue shift, and the fluorescent strength is obviously enhanced; in addition, ZnO is a good electron transport material, ZnO introduced into a luminescent layer polymer is capable of effectively balancing the ratio of electron and hole for forming exciton and increasing the luminescent efficiency of the devices.
Owner:SHANGHAI UNIV
Novel synthesis method of polyfluorene derivative and application in immunosensor for detecting tumor marker
InactiveCN103033618AGood blu rayHigh fluorescence efficiencyChemiluminescene/bioluminescenceFluorescence/phosphorescenceFlow cellPolymethyl methacrylate
The invention discloses a novel synthesis method of a polyfluorene derivative and an application in a flow injection fluorescent sensor for a tumor marker. The synthesis method of the polyfluorene derivative comprises the following steps that: 1,4-dibromo p-phenylenediamine (a compound 1) is synthesized; 2,7-dibromo-9,9-bi(3'-(N,N'-dimethylamino) propyl)-fluorene (a compound 2) is synthesized; p-vinyltoluene (a compound 3) is synthesized; the three monomers are polymerized into the polyfluorene derivative by a Heck reaction. A fabrication method of the sensor comprises the following steps that polymethyl methacrylate is adopted to fabricate a flow injection fluorescent flow cell; ferroferric oxide magnetic particles and gold nanoparticles are prepared and assembled into gold covered ferroferric oxide; a primary antibody is modified on gold cladded ferroferric oxide; the polyfluorene derivative is subjected to silicon cladding treatment; a secondary antibody is modified on the surface of the silicon cladded polyfluorene derivative; an immune reaction is conducted; and flow injection fluoroscopic detection is conducted on the tumor marker. The sensor is strong in specificity, high in sensitivity, simple to operate, and low in detecting line.
Owner:UNIV OF JINAN
Alcohol soluble high molecular material in poly-fluorene group containing phosphate group and preparation method
An alcohol-soluble high-molecular polyfluorene material containing phosphate radicals used for electroluminescent device, flat display and fluorescent sensor is prepared through linking the high-polar phosphate radical with the side chain of polyfluorene, and Yamamoto or Suzuki reaction for grafting the fluorescent dye (dibenzothiadiazole or dithiophene dibenzothiadiazole) to polyfluorene.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Blue light-emitting electroluminescent polyfluorene material and its prepn process
ActiveCN1637112AAchieving Horizontal DispersionRealizing pure blue electroluminescenceLuminescent compositionsEnergy transferImide
The present invention relates to blue electroluminescent polymer material and its preparation process. Based on the thought that deep blue polymer molecule can transfer energy effectively to blue light or blue-green light fluorescent dye molecule, the present invention adopts polyfluorene as deep blue mother body and naphthyl imide with high blue light or blue-green light fluorescence quantum efficiency as doped object unit, and grafts the doped unit onto the mother body to disperse the doped unit inside the mother body in molecule level. By means of regulating the content of the blue light or blue-green light fluorescent dye, the present invention realizes the energy transfer from the blue polymer molecule to the blue light or blue-green light fluorescent dye partially or completely and the pure blue electroluminescence, and constitutes one kind of molecularly dispersed blue polymer electroluminescence material.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Synthetic method of brush type homopolymer and copolymer containing conjugate oligomeric branched chains
InactiveCN102617768AOptimal Control StructureLarge range of performance adjustmentSilicon organic compoundsOrganic compound preparationBenzeneCarbazole
The invention discloses a synthetic method of a brush type homopolymer and a brush type copolymer containing conjugate oligomeric branched chains. In the synthesis process of a novel monomer, a metal catalysis coupling reaction and an esterification reaction are adopted, so that conjugate alkene monomers such as oligo-containing polyfluorene, oligomeric benzene, oligomeric benzyne, oligomeric carbazole, oligomeric thiophene and the like are synthesized; and a way for grafting and grafting to is adopted, and radical polymerization (including atom transfer radical polymerization) are performed, so that a series of brush type homopolymers and copolymers with conjugate branched chains are obtained, homopolymerization, binary irregular copolymerization and block copolymerization, and ternary irregular copolymerization and block copolymerization of a monomer containing a conjugate branched chain are realized, and special brush type homopolymers and brush type copolymers are obtained. The synthetic method disclosed by the invention is simple, convenient and practicable; a synthesized brush type polymer has a controllable structure; and a three-dimensional structural design of a large molecular strain is realized, and combination of a conjugate structure and a brush type structure is realized, so that a polymer with excellent comprehensive performance is obtained.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Polyfluorene derivative and organic light-emitting device thereof
InactiveCN108530418AHigh glass transition temperatureImprove film formationOrganic chemistrySolid-state devicesPolyfluoreneGlass transition
The invention provides a polyfluorene derivative and an organic light-emitting device thereof, and belongs to the technical field of organic photoelectric materials. The derivative has a structure shown as a formula (I). The polyfluorene derivative disclosed by the invention has a larger conjugate plane structure, so that high electron fluidity can be provided; electron-deficient group dibenzofuran, dibenzothiophene, acridine, phenoxazine and phenothiazine structures are introduced to better facilitate the acception of electrons and enable the polyfluorene derivative to have good transmissionperformance; by introducing a bridged structure, on the one hand, the molecular weight of the compound can be enlarged, and the obtained material is enabled to have high glass transition temperature and prevent the crystallization effect; on the other hand, the derivatives are enabled to have certain distortion in three-dimensional stereoscopic structure, and the film-forming property of the derivative is improved. The organic light-emitting device, which is prepared by using the compound as a main body material in a luminescent layer, shows the advantages of low driving voltage and high luminous efficiency; the polyfluorene derivative is an organic luminescent material with excellent performance.
Owner:CHANGCHUN HYPERIONS TECH CO LTD
Organic solar cell based on polyfluorene cathode interface self-assembly anode plasma resonance effect and preparation method of organic solar cell
InactiveCN105470396AImprove performanceIncrease profitFinal product manufactureSolid-state devicesOrganic solar cellPlasma effect
The invention belongs to the technical field of polymer solar cells, and particularly relates to an organic solar cell based on the polyfluorene cathode interface self-assembly anode plasma resonance effect and a preparation method of the organic solar cell. According to the method, an amphipathic polyfluorene material with high conductivity serves a cathode transmission layer, interface contact with ITO is increased through self-assembly of the cathode transmission layer, the cathode transmission layer replaces a traditional TiO2 or ZnO inorganic transmission layer, interface combination is reduced, and the performance of the organic solar cell is improved; meanwhile, a vacuum evaporation method is adopted for directly arranging a layer of gold nanoparticles on an active layer in an evaporation mode, light scattering is increased by utilizing the surface plasma effect of the layer of gold nanoparticles, the light path is increased, then the light utilization rate is increased, and thus the performance of a device is improved. The efficiency of the organic solar cell is effectively improved through the method, and the method is of great reference significance for nanoimprint lithography and development of organic solar cells in the future.
Owner:JILIN UNIV
Local dense quaternized polyfluorene ether ketone compound and preparation method thereof
The invention relates to a local dense quaternized polyfluorene ether ketone compound and a preparation method thereof. A novel bisphenol monomer containing eight benzyls and flourenyls is firstly designed; then, the monomer, and different proportions of 9,9-bi(4-hydroxy phenyl)fluorine and 4,4'-difluorobenzophenone take condensation polymerization reaction to prepare a polyfluorene ether ketone compound containing benzyl; through N-bromo-succinimide, the benzyl is converted into bromomethyl; further, through trimethylamine, the bromomethyl is converted into quaternary ammonium salt groups; aseries of local dense quaternized polyfluorene ether ketone compounds is prepared. The series compound has good solubility in polar aprotic solvents such as N,N-dimethylacetamide, N,N-dimethylformamide, N-methyl pyrrolidone and dimethyl sulfoxide; the compound can be cast into a membrane by a solution; a prepared anion exchange membrane has the characteristics of high heat stability, high oxidation stability, high anion conductivity, good mechanical property and the like.
Owner:FUZHOU UNIV
Functional polyfluorene compound and intermediate and application thereof
InactiveCN101591219BEasy to prepareHigh yieldHalogenated hydrocarbon preparationSolubilityCarbon nanotube
Owner:INST OF CHEM CHINESE ACAD OF SCI
Electron transport layer for improving stability of reverse perovskite solar cell and preparation method
ActiveCN110416412AImprove stabilitySolid-state devicesSemiconductor/solid-state device manufacturingChlorobenzenePerovskite solar cell
The invention belongs to the technical field of solar cells, and particularly relates to an electron transport layer for improving the stability of a reverse perovskite solar cell and a preparation method of the electron transport layer. The preparation method comprises the following steps: synthesizing fluorine-containing polyfluorene by adopting Suzuki coupling reaction, dissolving the preparedfluorine-containing polyfluorene, fullerene and derivatives thereof in chlorobenzene to obtain a fluorine-containing polyfluorene, fullerene and derivative solution thereof, and then carrying out thespin-coating of the fluorine-containing polyfluorene, fullerene and derivative solution thereof on a perovskite layer of a solar cell device to obtain an electron transport layer. Compared with a common electron transport layer material, the electron transport layer provided by the invention can obviously improve the stability of the reverse perovskite solar cell.
Owner:CHANGZHOU UNIV
Green-light copolymer material as well as preparation method thereof and organic light-emitting device
InactiveCN104017174AEasy transferGood hole transport propertiesSolid-state devicesSemiconductor/solid-state device manufacturingPolyfluoreneGreen-light
The invention belongs to an organic light-emitting material, and discloses a green-light copolymer material as well as a preparation method thereof and an organic light-emitting device. The material has a formula shown in the specification, wherein each of R1 and R2 is C1-C20 alkyl, and n is an integer of 10-100. Oxadiazole of the green-light copolymer material provided by the invention is an electron transfer unit, so that charge transfer is facilitated; carbazole has better hole transfer performance; a fluorene derivative is a compound with a rigid planar biphenyl structure, and has higher heat stability; by introducing oxadiazole and carbazole on a fluorene main chain, the defect that polyfluorene carrier transfer is not balanced is relieved, thereby facilitating improving efficiency of the organic light-emitting device.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +2
Memory elements using organic active layer
A memory element includes a first electrode, a passive layer on and in contact with the first electrode, a polyfluorene active layer on and in contact with the active layer, and a second electrode on and in contact with the polyfluorene active layer. The chemical structure of the polyfluorene active layer may be altered to take different forms, each providing a different memory element operating characteristic.
Owner:SPANSION LLC +1
Di-polyfluorene graft polystyrene
InactiveCN102060947ARegulated contentLow reaction temperatureOrganic compound preparationHydroxy compound preparationFluorescenceRoom temperature
The invention relates to a di-polyfluorene graft polystyrene which is prepared in the following steps of: 1, synthesizing 2-iodo-fluorenone; 2, synthesizing di-polyfluorene; and 3, synthesizing the di-polyfluorene graft polystyrene. The invention has the following performance that the reaction temperature is low, the reaction can be implemented at room temperature so as to achieve the advantages of less byproducts and easiness for purification; a synthesizing progress is simple and the total yield is higher up to 20% to 30%; and the content of di-polyfluorene fluorescence components in the di-polyfluorene graft polystyrene can be adjusted.
Owner:SHENYANG UNIV
Polyfluorene polymer with main chain containing non-conjugated units and preparation method and application of polyfluorene polymer
ActiveCN106146807AHigh color purityImprove efficiencySolid-state devicesSemiconductor/solid-state device manufacturingThin film morphologyQuantum efficiency
The invention discloses a polyfluorene polymer with a main chain containing non-conjugated units and a preparation method and application of the polyfluorene polymer. The polymer is characterized in that the non-conjugated structural units are introduced into the main chain of polyfluorene so as to achieve induction to generate a beta-phase. As everyone knows, the polyfluorene polymer is one of the most promising blue-light-emitting polymers and is considerably researched due to the fact that the polyfluorene polymer is high in fluorescence quantum efficiency, relatively good in thermal stability and electrochemistry stability, easy to functionalize at carbon-9 site of fluorene, and the like, and the beta-phase has far-reaching influence on thin film morphology, carrier transporting and device performance.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of cross-linked polyfluorene piperidine anion exchange membrane
The invention discloses a preparation method of a cross-linked polyfluorene piperidine anion exchange membrane. The method comprises the following steps: dissolving 9,9-dimethyl fluorene, N-methyl piperidone and trifluoroacetone in dichloromethane to obtain a homogeneous solution, adding trifluoroacetic acid and trifluoromethanesulfonic acid as catalysts, performing reacting for 24-36 hours at 0-10 DEG C in a nitrogen atmosphere, performing precipitating with a K2CO3 aqueous solution, and performing washing with deionized water to obtain light yellow solid polyfluorene piperidine polymer powder; dissolving the obtained polyfluorene piperidine and iodomethane in chloroform, performing heating and refluxing for 24-36 hours under a dark condition and a nitrogen atmosphere, then pouring a reaction solution into diethyl ether to precipitate, and performing washing with deionized water to obtain a quaternized polyfluorene piperidine polymer; and dissolving the obtained solution in dimethyl sulfoxide, adding a brominated amino siloxane cross-linking agent solution, performing reacting for 12-24 hours at 50-60 DEG C, adding iodomethane, performing reacting for 24-48 hours at 30-40 DEG C in a dark nitrogen atmosphere, adding ethanol, performing standing for 24-36 hours at room temperature, performing standing for 12-24 hours at 80 DEG C, standing for 3-6 hours at 100 DEG C, and performing standing for 1-3 hours at 120 DEG C to obtain the cross-linking type polyfluorene piperidine anion exchange membrane.
Owner:WUHAN UNIV OF TECH
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