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48 results about "Azo polymer" patented technology
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N-doped carbon spheres with lignin as raw material and preparing method and application thereof
ActiveCN106276848AReduce manufacturing costIncrease the utilization of high added valueCarbonizationAniline
The invention belongs to the field of nanometer material preparation, and particularly discloses N-doped carbon spheres with lignin as the raw material and a preparing method and application thereof. The preparing method comprises the steps of dissolving alkali lignin in water, and then adding hydrogen peroxide for reaction to obtain demethoxy lignin reaction liquid; making aniline or aniline derivatives react with sodium nitrite to obtain diazonium salt reaction liquid; mixing the reaction liquid for reaction; adding dilute sulphuric acid for sedimentation, and conducting washing and drying to obtain a lignin-based azo polymer, dissolving the polymer in an organic solvent, and adding water to change the microfacies environment to obtain lignin azo polymer colloidal spheres; calcining the lignin azo polymer colloidal spheres under inert gas shielding, and conducting cooling to obtain the N-doped carbon spheres. The porous N-doped carbon spheres with uniform structure can be obtained through carbonization of the lignin azo polymer colloidal spheres, and the N-doped carbon spheres show excellent initial coulomb efficiency and long-term circulation stability when applied to a lithium ion battery negative electrode active material and are an environment-friendly reproducible nano electrode material.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method and application of NCO functionalized graphene/azo polymer composite waveguide thermo-optical material
InactiveCN105294987AHigh thermo-optic coefficientLow driving powerNon-linear opticsOptical coefficientWaveguide
The invention belongs to the field of organic / inorganic composite material synthesis and relates to preparation of azo polymer and functionalized graphene oxide series compounds, in particular to a preparation method and application of an NCO functionalized graphene / azo polymer composite waveguide thermo-optical material. The preparation method comprises the steps of firstly, preparing graphite oxide through a Hummers method, and obtaining graphite oxide dispersion liquid through ultrasonic peeling; then, making toluene diisocynate react with disperse red-19 containing two hydroxyl groups under the action of T-12, and obtaining azobenzene prepolymer with the end capped through hydroxy; subsequently, making IPDI react with the graphite oxide dispersion liquid, and preparing and obtaining isophorone diisocyanate functionalized graphite oxide; then, adding the graphite oxide to the obtained azobenzene prepolymer with the end capped through hydroxy for coducting a reaction, and finally obtaining the azo polyurethane / isophorone diisocyanate functionalized graphite oxide nanometer composite material. The material has a high thermo-optical coefficient (dn / dT) and can be applied to research of a novel digital thermo-optical switch which is low in driving power and high in response speed.
Owner:JIANGSU UNIV
Light-responding methyl methacrylate azo polymer and synthetic method thereof
The invention relates to light-responding methyl methacrylate azo polymer and a synthetic method thereof; azobenzene is dissolved in dichloromethane and is dropwise added at 0 DEG C into a system with methacrylic acid and a catalyst 4-dimethylamino-pyridine, and nitrogen is introduced to remove air in the system; a dewatering agent dicyclohexylcarbodiimide is dropwise added into the system and is reacted at 0 DEG C for 2-5 hours, and the temperature is raised to 25 DEG C for reacting for 12-24 hours to obtain an azo monomer with olefin group at one end; methyl methacrylate and an initiator AIBN (azodiisobutyronitrile) are added into a container, nitrogen is introduced to remove oxygen in the system, the azo monomer of step 1 is dropwise added into the system to enable reacting at 60-90 DEG C, and reacting is carried out for 3-8 hours to obtain the light-responding methyl methacrylate azo polymer. The preparation method is simple, the azo polymer material has good light response and high stability, and the synthetic method for the light-responding methyl methacrylate azo polymer is provided.
Owner:TIANJIN UNIV
Preparation method and applications of hyperbranched azo polymer
InactiveCN103193967AHigh thermo-optic coefficientLow driving powerTenebresent compositionsBenzoic acidPolymer science
The invention relates to a preparation method and applications of a hyperbranched azo polymer, belonging to the organic synthesis field. The preparation method comprises the steps: firstly, performing nitroreduction and carboxyl acylation by taking p-nitrobenzoic acid as a raw material, to obtain an A2 type monomer azo-bi(benzoyl chloride) with an azobenzene structure, and then reacting the A2 type monomer azo phthaloyl dichloride with a B3 type monomer glycerol according to certain mole ratio to obtain the hyperbranched azo polymer. The materials of the obtained hyperbranched azo polymer has higher thermo-optical coefficient which is more than ten times of that of inorganic materials such as borosilicate glass, zinc silicate glass, silica glass and the like, and the material provides a possibility for developing a novel digital thermo-optical switch with low driving power.
Owner:JIANGSU UNIV
Main chain type azobenzene polymer and preparation method thereof
The invention discloses a main chain type azobenzene polymer and a preparation method thereof. According to the preparation method, the main chain type aromatic azo polymer is prepared by adopting nitro reduction coupling reaction for the first time. The preparation method comprises the following steps: firstly synthesizing different types of monomers through a series of reactions, namely conjugate monomers and non-conjugate monomers; secondly, synthesizing a photocatalyst required by a polymerization system, namely gold nanoparticles loaded on zirconium oxide, and characterizing the photocatalyst through a series of tests; and finally carrying out nitro reduction coupling reaction of the monomers in the presence of a methylbenzene-isopropanol mixed solvent and potassium hydroxide, thus obtaining the main chain type aromatic azo polymer. The preparation method disclosed by the invention needs few polymerization reaction components, is simple, practicable, convenient in a purification process, mild in reaction conditions and has the advantages of low toxicity, high efficiency and environmental protection. The main chain type aromatic azo polymer prepared by using the method has good solubility and functionality and high optical application value.
Owner:苏州吉尼尔机械科技有限公司
Method for preparing light-controlled solid-liquid transformed azo polymer
ActiveCN110437383AHigh molecular weightGood film formingHeat-exchange elementsDendrimerUltraviolet lights
The invention relates to a method for preparing a light-controlled solid-liquid transformed azo polymer, and belongs to the field of polymer functional materials. The azo polymer is prepared by azobenzene acrylate and polyamidoamine (PAMAM) dendrimer through michael addition reaction. The azobenzene in the azo polymer has reversible trans-cis photoisomerization properties. The azo polymer can realize reversible solid-liquid phase transformation under light control, specifically, azobenzene changes from a trans structure to a cis structure under ultraviolet light irradiation, and the azo polymer changes from a solid state to a liquid state; and the azobenzene under visible light irradiation transforms from the cis structure to the trans structure, and the azo polymer changes from a liquid state to a solid state. The method provides a new strategy for developing novel light-induced solid-liquid transformed materials, light-induced phase change heat storage and molecular photothermal storage materials.
Owner:UNIV OF SCI & TECH BEIJING
Polyaryletherketone containing boric acid ester, azo polyaryletherketone and preparation method thereof
The invention discloses polyaryletherketone containing a boric acid ester, azo polyaryletherketone and a preparation method thereof, and belongs to the technical field of preparation of a high polymer material. The method comprises the following steps: firstly, synthetizing bisphenol A polyaryletherketone, and carrying out catalytic boriding reaction under a 1,5-cyclooctadiene chloride iridium dipolymer by using the polyaryletherketone and boron pinacol ester; secondly, synthetizing a 4-iodine-4'-(N,N-dimethyl amine) azobenzene monomer; finally, reacting with the 4-iodine-4'-(N,N-dimethyl amine) azobenzene monomer under catalysis of tetrakispalladium by using a polyaryletherketone material containing the boric acid ester, so as to prepare the azo polyaryletherketone. By adopting the method, an azo monomer can be successfully led to the polyaryletherketone, but the performance of the polyaryletherketone is not affected, biphenyl structure azo polyaryletherketone with stable performance also can be generated, and the storage stability of the azo material can be improved. Therefore, the method is expected to be applied in the aspect of preparation of a novel azo polymer material.
Owner:JILIN UNIV
Optical storage anti-fake element, manufacturing method, application and optical elements applied to manufacturing process
ActiveCN103625153AImprove anti-counterfeiting reliabilityAvoid repeated useInformation cardsOptical elementsConvex structureAzo polymer
The invention relates to the field of optics, and provides an optical storage anti-fake element. The optical storage anti-fake element at least comprises a pattern layer, the pattern layer is provided with azo polymers, the azo polymers at least comprises one kind of azobenzene chromophore, the upper surface of the pattern layer is provided with a continuous or discontinuous concave-convex structure, and optical information which is erasable, capable of being read, written and changed, and capable of being read and identified by machines is written in the concave-convex structure. The optical storage anti-fake element has high anti-fake reliability.
Owner:CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
Chiral azobenzene polymer and production method thereof
InactiveCN107868201AAdjustable main chain structureAdjustable molecular weightRecord carrier materialsSide chainP-Aminobenzoic acid
The invention relates to a chiral azobenzene polymer and a production method of the chiral azobenzene polymer. The chiral azobenzene polymer is a polyurethane material with a chiral group and an azobenzene group on a side chain. The production method of the chiral azobenzene polymer takes S-2-methyl-1-butanol as a chiral source, the S-2-methyl-1-butanol and 4-aminobenzoic acid react to obtain 4-aminobenzoic acid-S-2-methyl butyl ester, the polyurethane is prepared through condensation polymerization of diisocyanate and N,N-dihydroxyethylaniline, and finally the 4-aminobenzoic acid-S-2-methyl butyl ester and the polyurethane are subjected to a diazo coupling reaction to obtain the corresponding chiral azobenzene polymer. The main chain structure of the chiral azobenzene polymer is changed by changing the structure of the diisocyanate, and the molecular weight of the chiral azobenzene polymer is regulated by controlling the reaction time of condensation polymerization and the reactant ratio of the diazo coupling reaction. The surface of the chiral azobenzene polymer realizes holographic optical storage of information under the radiation of interference laser of 450-550 nm, and a formed holographic pattern can be erased and rewritten.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Organic polymer electronic memory and manufacturing method therefor
ActiveCN101339974ASimplify the preparation and implementation processLow costSolid-state devicesSemiconductor/solid-state device manufacturingPolymer scienceIndium
The invention discloses an organic polymer electronic memory which comprises an upper electrode, a lower electrode and an organic polymer layer arranged between the upper electrode and the lower electrode, wherein, the upper electrode is made from aluminum, the lower electrode is made from nanometer indium tin metal oxide, and the organic polymer is chosen from an azo polymer which is obtained by free radical polymerization of one of acrylate azo monomers which takes nitryl or bromine substituent or methoxy group as an terminal substituent group, and the average molecular weight of the azo polymer is 2,500-15,000. The azo polymer memory device has the advantages of simple structure and preparation process, rapid storage speed and good stability; and the storage classes of the azo polymer device can be correspondingly adjusted by adjusting the terminal substituent group of the azo polymer.
Owner:SUZHOU UNIV
Photochromic hyperbranched azopolyamide and preparation method thereof
InactiveCN110343242APhotoresponsiveSpecial Photoelectric PropertiesTenebresent compositionsPhotoisomerizationAzo polymer
The invention provides a photochromic hyperbranched azopolyamide and a preparation method thereof. The method includes: taking 4, 4'-azodianiline and trimesic acid as the raw materials, firstly converting trimesic acid into trimesoyl chloride, and then utilizing the reaction activity of acyl chloride group and amino to synthesize hyperbranched azopolyamide by low temperature solution polycondensation. The photochromic hyperbranched azopolyamide has the optical activity of azo group, and also has good thermodynamic stability and excellent processability of polyamide substances, and a UV-Vis spectrum is employed to study the photoisomerization characteristics and photo-trans-cis isomerization kinetics of the synthesized azo polymer.
Owner:LINGNAN NORMAL UNIV
Preparation and application of amino-functionalized graphene oxide/azo polymer composite waveguide material
InactiveCN105218779AImprove thermo-optic performanceImprove mechanical propertiesNon-linear opticsEthylenediaminePolymer science
The invention belongs to the field of polymeric nanocomposite material synthesis, and relates to preparation and application of an amino-functionalized graphene oxide / azo polymer composite waveguide material. The preparation comprises the following steps: firstly preparing azo chromophore 4-(4-nitro-alkenyl)phenyl-1,3-diamine from paranitroaniline and m-phenylenediamine, and then preparing a isocyano-terinated azobenzene prepolymer from NAPD and IPDI in the presence of T-12; afterwards ultrasonically exfoliating graphite oxide to obtain graphene oxide dispersion liquid, and reacting with quadrol under the action of 2-(7-azo benzo triazole)-N, N, N minute, N minute-tetramethyluronium hexafluorophosphate, so as to obtain amino-functionalized graphene oxide; adding the carbimide radical blocked azobenzene prepolymer into EAGO, and performing vacuum drying. A thermo-optical coefficient (dn / dT) of the prepared amino-functionalized graphene oxide / azo polymer composite waveguide material is greater than that of a common organic material and is more than 10 times that of a traditional inorganic material, and the composite waveguide material can be applied to the development of novel digital thermal optical switches with low drive efficiency and higher response speed.
Owner:JIANGSU UNIV
Preparation method of anisotropic azo polymer/carbon tube composite thin film with photo-responsitivity
The invention relates to a preparation method of antisotropic azo polymer / carbon tube composite thin film with photo-responsitivity. An azo polymer and a modified carbon tube composite film are prepared into a flexible polymer thin film with in plane anisotropy through synthesis of the azo polymer and modification of a carbon tube film; a flexible thin film with in-plane conducting anisotropy can be obtained through polymer molecular chains are orientated along a carbon tube under the induction of the carbon tube, and the conductivity in the in-plane horizontal direction is higher than that in the direction which is vertical to the carbon tube by one order of magnitude; under UV (Ultraviolet) irradiation, the conductivity of an azo polymer-carbon tube composite film is changed, and since azo molecules are in cis-trans isomerization under the UV irradiation and the molecular distance of a cis structure is reduced, higher conductivity is obtained; the conductivity of the azo polymer-carbon tube composite flexible thin film has good repeatability along with the change of irradiation, and good photo-responsitivity is expressed by the azo polymer-carbon tube composite flexible thin film; the antisotropic azo polymer / carbon tube composite thin film is expected to be applied to many fields of aerospace, organic photoelectric devices and the like.
Owner:TIANJIN UNIV
Polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and preparing method of polyarylester liquid crystal material
InactiveCN105524274AGood photoelectric activityGreat application potentialLiquid crystal compositionsSolubilityHydrazine compound
The invention discloses a polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments and a preparing method of the polyarylester liquid crystal material, belonging to the filed of functional polymer materials. The method comprises: reacting azobenzene diacyl chloride with different substituent groups with parahydroxydiphenylamine to prepare an azo ester monomer, then performing oxidative coupling polymerization on the azo ester monomer and p-phenylenediamine to prepare oxidation azo polyarylester liquid crystal material, and through reducing of hydrazine hydrate and ammonium hydroxide, obtaining the polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments. The polyarylester liquid crystal material with photoelectricity activity and containing azo and aniline segments has good solubleness and thermal stability, has electrochemical activity similar to an aniline oligomer and photoinduced isomerism of an azo polymer, and can produce lyotropic liquid crystal in organic solvents such as N,N-dimethylacetamide and dimethylsulfoxide. The material has good application potential in aspects of biosensors, optical elements and electromagnetic materials, and the like.
Owner:ANYANG INST OF TECH
Fixing method of surface relief gratings (SRGs) on azo polymer film
The invention relates to a new fixing method of surface relief gratings on an azo polymer film. The fixing method of surface relief gratings on the azo polymer film is realized by introducing an N-hydroxy succinimide carboxylic ester group into an azo polymer and reacting with a diamine or polyamine solution. The fixing method for SRGs on the azo polymer film is mild in conditions, fast in speed and small in reaction system toxicity, the fixed SRGs structure is not influenced and has the advantages of good thermal stability and solvent resistance, and the like. The fixed surface relief gratings have wide application prospect in the fields such as optical storage, micro / nanofabrication, chemical sensors and the like.
Owner:NANKAI UNIV
Conjugated Azopolymers Made From Aromatic Azides And Methods For Making Same
A conjugated azopolymer and methods for making same. The azopolymer includes a plurality of monomer units containing isoindigo with R1 and R2 substituent groups, wherein R1 can be one or more C1 to 30 hydrocarbons; and R2 can be H or F. The azopolymer can have a number average molecular weight (Mn) of 4 to 20 kDa; a weight average molecular weight (Mw) of 12 to 50 kDa; and a poly dispersity index (PDI) of 2 to 3. The polymer can further have selected maximal wavelengths (λmax) of 481 to 709 nm and electrochemical reduction events of −0.4 to −1.0 V against an Ag / AgCl reference electrode.
Owner:PURDUE RES FOUND INC
A nitrogen-doped carbon sphere using lignin as raw material and its preparation method and application
ActiveCN106276848BReduce manufacturing costIncrease the utilization of high added valueCarbon preparation/purificationCarbonizationAniline
The invention belongs to the field of nanometer material preparation, and particularly discloses N-doped carbon spheres with lignin as the raw material and a preparing method and application thereof. The preparing method comprises the steps of dissolving alkali lignin in water, and then adding hydrogen peroxide for reaction to obtain demethoxy lignin reaction liquid; making aniline or aniline derivatives react with sodium nitrite to obtain diazonium salt reaction liquid; mixing the reaction liquid for reaction; adding dilute sulphuric acid for sedimentation, and conducting washing and drying to obtain a lignin-based azo polymer, dissolving the polymer in an organic solvent, and adding water to change the microfacies environment to obtain lignin azo polymer colloidal spheres; calcining the lignin azo polymer colloidal spheres under inert gas shielding, and conducting cooling to obtain the N-doped carbon spheres. The porous N-doped carbon spheres with uniform structure can be obtained through carbonization of the lignin azo polymer colloidal spheres, and the N-doped carbon spheres show excellent initial coulomb efficiency and long-term circulation stability when applied to a lithium ion battery negative electrode active material and are an environment-friendly reproducible nano electrode material.
Owner:SOUTH CHINA UNIV OF TECH
A photoresponsive methyl methacrylate azo polymer and its synthesis method
The invention relates to light-responding methyl methacrylate azo polymer and a synthetic method thereof; azobenzene is dissolved in dichloromethane and is dropwise added at 0 DEG C into a system with methacrylic acid and a catalyst 4-dimethylamino-pyridine, and nitrogen is introduced to remove air in the system; a dewatering agent dicyclohexylcarbodiimide is dropwise added into the system and is reacted at 0 DEG C for 2-5 hours, and the temperature is raised to 25 DEG C for reacting for 12-24 hours to obtain an azo monomer with olefin group at one end; methyl methacrylate and an initiator AIBN (azodiisobutyronitrile) are added into a container, nitrogen is introduced to remove oxygen in the system, the azo monomer of step 1 is dropwise added into the system to enable reacting at 60-90 DEG C, and reacting is carried out for 3-8 hours to obtain the light-responding methyl methacrylate azo polymer. The preparation method is simple, the azo polymer material has good light response and high stability, and the synthetic method for the light-responding methyl methacrylate azo polymer is provided.
Owner:TIANJIN UNIV
Method for manufacturing optical waveguide by using azobenzene polymer
InactiveCN101762847AEasy to manufactureThe synthesis process is simpleOptical waveguide light guideEpoxyN dimethylformamide
Owner:TSINGHUA UNIV
Method for achieving azo polymer film surface patterning through laser
InactiveCN109251344AGood repeatabilityAvoid Manufacturing ComplexityCoatingsSurface patternElastomer
The invention discloses a method for achieving azo polymer film surface patterning through laser. The method comprises: preparing a PDMS elastomer; preparing a 30 mg / mL polyaminoazobenzene / tetrahydrofuran solution and a polyethyleneimine / ethanol solution having a mass fraction of 3%; taking the polyethyleneimine / ethanol solutionr, and carrying out spin-coat to form a uniform film as a polymer middle layer on the surface of the PDMS elastomer; continuously taking the polyaminoazobenzene / tetrahydrofuran solution, and carrying out spin-coat to form a PAAB film so as to finally obtain a compositefilm coated with a uniform polyaminoazobenzene layer; and treating the surface of the film system by using 256 mw and 405 nm unpolarized light, and controlling the morphology of the pattern generatedon the surface by regulating the illumination time and the substrate modulus. According to the present invention, the pattern on the surface of the film-based system is adjusted by regulating the illumination time and the substrate modulus through the simple and rapid operation, such that the complicated and cumbersome operation steps, the long preparation time, the expensive equipment and the experiment consumable loss are avoided.
Owner:TIANJIN UNIV
Preparation and Application of Amino-functionalized Graphene Oxide/Azo Polymer Composite Waveguide Material
InactiveCN105218779BImprove thermo-optic performanceImprove mechanical propertiesNon-linear opticsEthylenediaminePolymer science
The invention belongs to the field of polymeric nanocomposite material synthesis, and relates to preparation and application of an amino-functionalized graphene oxide / azo polymer composite waveguide material. The preparation comprises the following steps: firstly preparing azo chromophore 4-(4-nitro-alkenyl)phenyl-1,3-diamine from paranitroaniline and m-phenylenediamine, and then preparing a isocyano-terinated azobenzene prepolymer from NAPD and IPDI in the presence of T-12; afterwards ultrasonically exfoliating graphite oxide to obtain graphene oxide dispersion liquid, and reacting with quadrol under the action of 2-(7-azo benzo triazole)-N, N, N minute, N minute-tetramethyluronium hexafluorophosphate, so as to obtain amino-functionalized graphene oxide; adding the carbimide radical blocked azobenzene prepolymer into EAGO, and performing vacuum drying. A thermo-optical coefficient (dn / dT) of the prepared amino-functionalized graphene oxide / azo polymer composite waveguide material is greater than that of a common organic material and is more than 10 times that of a traditional inorganic material, and the composite waveguide material can be applied to the development of novel digital thermal optical switches with low drive efficiency and higher response speed.
Owner:JIANGSU UNIV
Preparation method of azo porous material/carbon nanotube composite electrode material
ActiveCN108807939AHigh nitrogen contentRich pore structureCell electrodesSecondary cellsCarbon nanotubeSolvent
The invention provides a preparation method of an azo porous material / carbon nanotube composite electrode material. A nano-scale cuprous chloride catalyst is prepared by adopting a solvothermal method; aromatic type amino compounds including 1,3,5-triaminobenzene and the like, which have a similar symmetrical structure, are selected as monomer molecules and subjected to amino coupling reaction under the catalysis of a cuprous chloride nano-crystal to prepare an azo polymer. The method disclosed by the invention can be carried out at room temperature, and an azo group is introduced into a porous polymer system to synthesize the azo porous material / carbon nanotube composite electrode material by adopting an in-situ composite technology, and very high nitrogen element content and abundant pore structures are realized; a prepared azo porous material can be subjected to reversible lithiation / lithium removal by high electrochemical performance in a charging / discharging cycle; the preparationmethod has the characteristics of simplicity in preparation, low cost and easiness for industrialized batch production.
Owner:聚源材料科技(遵义)有限公司
Holographic optical storage polymer and manufacturing method thereof
ActiveCN108047369AThe preparation method is simple and controllableLow costRecord carrier materialsPolymeric surfacePolymer science
The invention relates to a holographic optical storage polymer and a manufacturing method thereof. The holographic optical storage polymer is a pseudo-stilbenes type azo polymer material containing chiral groups. The manufacturing method of the holographic optical storage polymer comprises the following steps: using S-2-methyl-1-butanol as a chiral source to react with 4-aminobenzoic acid to obtain an aniline derivative with chiral groups, then preparing a pseudo-stilbenes type azo monomer containing chiral groups through a diazo coupling reaction, and finally, polymerizing the synthesized azomonomer by polymerization to obtain the corresponding polymer. The flexible spacer groups between the azo group of the holographic optical storage polymer and the polymer main chain are 2-16 methylene groups. The molecular weight of the holographic optical storage polymer can be adjusted, and under the irradiation of a 532-nanometer interference laser, the surface quasi-crystal structure of 12 times or more can be processed on the surface of the holographic optical storage polymer, holographic optical storage can be performed on the film surface of the holographic optical storage polymer in 1minute, and the formed holographic pattern can be erased and rewritten.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Lignin-based amphiphilic azo-polymer colloidal spheres as well as preparation method and application thereof
Owner:SOUTH CHINA UNIV OF TECH
Azo monomer, and azo polymer prepared by polymerization of the azo monomer
According to one embodiment of the present invention, an azo polymer forms a complex with a lithium ion and a sodium ion among alkali metal ions, but does not form a complex with a potassium ion. Therefore, the azo polymer is expected to be utilized as a material for a sensor capable of selectively detecting a specific alkali metal ion, or as a novel material capable of selectively trapping a specific alkali metal ion from a solution in which metal ions are mixed.
Owner:LG CHEM LTD +1
Preparation method of photoresponsive anisotropic azo polymer/carbon tube composite film
The invention relates to a preparation method of antisotropic azo polymer / carbon tube composite thin film with photo-responsitivity. An azo polymer and a modified carbon tube composite film are prepared into a flexible polymer thin film with in plane anisotropy through synthesis of the azo polymer and modification of a carbon tube film; a flexible thin film with in-plane conducting anisotropy can be obtained through polymer molecular chains are orientated along a carbon tube under the induction of the carbon tube, and the conductivity in the in-plane horizontal direction is higher than that in the direction which is vertical to the carbon tube by one order of magnitude; under UV (Ultraviolet) irradiation, the conductivity of an azo polymer-carbon tube composite film is changed, and since azo molecules are in cis-trans isomerization under the UV irradiation and the molecular distance of a cis structure is reduced, higher conductivity is obtained; the conductivity of the azo polymer-carbon tube composite flexible thin film has good repeatability along with the change of irradiation, and good photo-responsitivity is expressed by the azo polymer-carbon tube composite flexible thin film; the antisotropic azo polymer / carbon tube composite thin film is expected to be applied to many fields of aerospace, organic photoelectric devices and the like.
Owner:TIANJIN UNIV
Method for manufacturing optical waveguide by using azobenzene polymer
InactiveCN101762847BEasy to manufactureThe synthesis process is simpleOptical waveguide light guideEpoxyN dimethylformamide
The invention relates to a method for manufacturing optical waveguide by using an azobenzene polymer, and belongs to the technical field of optical device manufacturing. The method comprises the following steps: firstly, cleaning an underlayer; mixing an epoxy resin prepolymer, isocyanate and N,N-Dimethylformamide so as to obtain first blended solution, then spin-coating the first blended solution on the cleaned underlayer to obtain a lower cladding; mixing the azobenzene polymer, isocyanate and N,N-Dimethylformamide so as to obtain second blended solution, then spin-coating the second blended solution on the lower cladding to obtain a sandwich layer; placing a mask on the sandwich layer, irradiating the mask with a laser so as to form the optical waveguide; and coating a curing glue on an upper cladding of the optical waveguide. The method has the advantages of simple manufacturing process, easily controlled quality and low product cost.
Owner:TSINGHUA UNIV
Synthesis of hyperbranched azo polymer and modification method of same
InactiveCN103483519BEasy to getLow priceTenebresent compositionsRecord carrier materialsDiphenylmethaneQuinone
The invention relates to a synthesis and modification method of a hyperbranched azo polymer, which uses azoresorcinol sulfonic acid and 4,4'-diphenylmethane diisocyanate (MDI) as raw materials and utilizes azo The hydroxyl group of quinone sulfonic acid, the sulfonic acid group and the isocyanate group in the MDI molecule are polycondensed under specific reaction conditions to form a hyperbranched azo polymer. During the reaction, the change of the absorbance of the system at a wavelength of 430nm is used to track the synthesis hyperbranch The reaction process of the azo polymer. The hydroxyl group on the periphery of the synthesized polymer molecule reacts with succinic anhydride / trimellitic anhydride to improve the solubility of the hyperbranched azo polymer; the maximum absorption peak of the π→π* transition of the synthesized hyperbranched azo polymer is 425? nm, trimellitic anhydride modified hyperbranched azo polymer is basically the same as the hyperbranched azo polymer π→π* transition maximum absorption peak, succinic anhydride modified hyperbranched azo polymer azo group π→π* transition is the largest Absorption peak from 425? nm? Redshifted to 501nm.
Owner:ZHANJIANG NORMAL UNIV
A kind of main chain type azobenzene polymer and preparation method thereof
The invention discloses a main chain type azobenzene polymer and a preparation method thereof. According to the preparation method, the main chain type aromatic azo polymer is prepared by adopting nitro reduction coupling reaction for the first time. The preparation method comprises the following steps: firstly synthesizing different types of monomers through a series of reactions, namely conjugate monomers and non-conjugate monomers; secondly, synthesizing a photocatalyst required by a polymerization system, namely gold nanoparticles loaded on zirconium oxide, and characterizing the photocatalyst through a series of tests; and finally carrying out nitro reduction coupling reaction of the monomers in the presence of a methylbenzene-isopropanol mixed solvent and potassium hydroxide, thus obtaining the main chain type aromatic azo polymer. The preparation method disclosed by the invention needs few polymerization reaction components, is simple, practicable, convenient in a purification process, mild in reaction conditions and has the advantages of low toxicity, high efficiency and environmental protection. The main chain type aromatic azo polymer prepared by using the method has good solubility and functionality and high optical application value.
Owner:苏州吉尼尔机械科技有限公司
Optical storage anti-counterfeiting element, manufacturing method, application and optical element used in manufacturing process
ActiveCN103625153BImprove anti-counterfeiting reliabilityAvoid repeated useInformation cardsOptical elementsConvex structureAzo polymer
Owner:CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
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