100 results about "Vinyl carbazole" patented technology

An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.

The invention discloses a method for modifying epoxy resin by using amphiphilic copolymer modified graphene. The method comprises the steps of preparing a graphene oxide from graphene serving as a raw material by adopting a Hummers oxidation method; polymerizing glycidyl methacrylate and vinylcarbazole by adopting a free radical polymerization method to obtain an amphiphilic polymer; dispersing the graphene oxide and the amphiphilic polymer into a solvent together, adding hydrazine hydrate, and reducing to obtain the amphiphilic copolymer modified graphene. The operation process is simple and convenient, and the amphiphilic copolymer modified graphene is easily synthesized in large batch. The prepared amphiphilic copolymer modified graphene has good dispersion performance in the epoxy resin, and can significantly improve the toughness of the epoxy resin. The mechanical properties of a graphene / epoxy resin composite material prepared by the method disclosed by the invention are greatly improved, wherein the tensile property is improved by over 30%, and the bending property is improved by over 50%.

The invention relates to a synthesis method of macromolecular white light phosphor powder containing europium and terbium. Firstly, a reactive europium complex compound and a reactive terbium complex compound are prepared, and then the polymerization is carried out. The synthesis method mainly comprises the following steps: firstly, an aqueous solution of sodium hydroxide, an ethanol solution of azodiisobutyronitrile, an oil phase solution, an oil-in-water normal microemulsion are prepared; then in a four-mouth flask, an europium-terbium-vinylcarbazole-methylmethacrylate tetra-copolymer is synthesized in a nitrogen atmosphere in a water bath while heating and stirring are carried out under such conditions that the water is cyclically condensed and the pH value is neutral; and the reaction product is de-emulsified with methanol, washed, dried, ground, sieved, purified and dried in vacuum to form tetra-copolymer white powder with the grain size less than or equal to 100 nm. The synthesis method has advanced process and high parameter accuracy and precision, and increases the product purity up to 98.6%. The product emits white light, and the color coordinate X is equal to 0.3538 and the color coordinate Y is equal to 0.3356. The synthesis method is an ideal method for synthesizing the macromolecular white light phosphor powder containing europium and terbium.

Disclosed is a holographic recording medium and methods of manufacturing the holographic recording medium. The example of the medium has a recording layer containing a three dimensionally cross-linked polymer matrix including an epoxy resin, a radically polymerizable monomer, and a photo radical polymerization initiator. The radically polymerizable monomer comprises both N-vinylcarbazole (VC) and N-vinylpyrrolidone (VP) or N-vinylcarbazole alone. The weight ratio of N-vinylcarbazole (VC) to the sum of N-vinylcarbazole (VC) and N-vinylpyrrolidone (VP), i.e., (VC / (VC+VP)), is not smaller than 0.75 and not larger than 1.0.

The invention relates to a polyvinyl carbazole / graphene composite material and a synthetic method and an application thereof. The synthetic method comprises the following steps: firstly oxidizing natural graphite to obtain graphite oxide; grafting an initiative and reversible addition-fragmentation chain transferred and polymeric group on the surface of the graphite oxide; and finally initiating a polymerization reaction of the N-vinyl carbazole on the surface of the graphite oxide by virtue of an initiating group to obtain the polyvinyl carbazole / graphene composite material via different reducing agents. The invention has remarkable characteristics as follows: the condition for initiating reversible addition-fragmentation chain transfer and polymerization on the surface is simple, the operation is easy, the polyvinyl carbazole can be firmly combined on the surface of the graphene by a covalent bond, controllable synthesis of macromolecular weight and molecular weight distribution can be achieved, the compatibility of the two materials can be effectively improved to a certain degree, and the current carrier transmission performance of the composite material is improved, thus having better application prospect and better economic benefits in the photoelectric information material field.

An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.

The invention discloses a rare earth polymer luminescent material with Tpy as a neutral ligand and preparation and application thereof, belonging to the field of luminescent materials. The invention overcomes the problems of great preparation difficulty, a long period, instable quality and performance, low brightness and efficiency, etc. of rare earth electroluminescent polymer materials in the prior art. According to the invention, a polymerizable Tpy rare earth complex and N-vinyl carbazole are used as monomers and subjected to radical copolymerization so as to obtain the rare earth polymer luminescent material with Tpy as the neutral ligand. The rare earth polymer luminescent material with Tpy as the neutral ligand is applied as a luminescent layer material or luminescent layer doping material for an electroluminescent device, and the prepared electroluminescent device has turn-on voltage of 12 to 37 V, electroluminescent brightness of 0.1 to 70 cd / m<2> and maximum external quantum efficiency of 0.37%. The prepared polymer can also be applied to an electroactive layer of a polymer electrical memory device. A synthetic method used in the invention is simple and easily practicable and is easy to industrialize.

An optical element having a diffraction shape uses an optical material comprising at least N-vinylcarbazole, polyvinylcarbazole, and the light polymerization initiator. By using such optical material, it is possible to suppress crystallization of the optical material during molding even at room temperature and appropriately control the dropping amount suited for replica molding. It is possible to provide the optical material also suited for replica molding at room temperature by setting a ratio of N-vinylcarbazole to polyvinylcarbazole, i.e. N-vinylcarbazole / polyvinylcarbazole, to a range between 90 / 10 and 70 / 30.

The invention discloses a film former for seed coating and the preparation method thereof. The preparation method comprises the steps as follows: subjecting diacetone acrylamide and unsaturated monomer to copolymerization reaction to obtain polymer, and reacting with dihydrazide compound to obtain film-forming material for seed-coating. The unsaturated monomer compound can be one or more selected from methyl methacrylate, styrene, vinyl acetate, vinyl chloride, maleic anhydride, N-vinyl pyrrolidone, vinylidene chloride, acrylonitrile, methyl vinyl ketone, methacrylic acid, acrylamide, methyl acrylate, ethyl acrylate, butyl acrylate, dihydrazide, N-vinylcarbazole and butadiene. The film former prepared by the method has good film physical chemical properties such as forming property, water resistance, air permeability, water permeability, etc., and drug slow release function to prolong drug effect and protect healthy growth of crops.

The invention discloses a degradable photoelectric material and a preparing method for the degradable photoelectric material. The degradable photoelectric material comprises, by mass, 10 parts to 20 parts of manganese phthalocyanine, 8 parts to 15 parts of silicon dioxide, 1 part to 6 parts of dimethyl sulfoxide, 2 parts to 8 parts of polyaniline, 20 parts to 40 parts of polylactic acid, 1 part to 8 parts of zinc stearate, 2 parts to 8 parts of vinylcarbazole, 5 parts to 15 parts of PTC, 1.2 parts to 3.7 parts of methylamine, 0.18 part to 1.25 parts of light stabilizers and 1.8 parts to 3.5 parts of ultraviolet absorbents, and further comprises, by mass, 0.31 part to 1.92 parts of N,N'-dimethyl-3,4,9,10-perylenetetracarboxylic diimide. The degradable photoelectric material has the dual-conduction performance and is small in toxicity, small in environment pollution, degradable, high in photoelectric conversion efficiency, light in weight, simple and practicable in preparing method and low in production cost.

The disclosed subject matter provides a filter that is modified by a polymer-carbon based nanomaterial nanocomposite intended to significantly enhance the performance of filtration, separation, and remediation of a broad variety of chemicals, heavy metal ions, organic matters, and living organisms. Polymeric materials, such as but not limited to poly-N-vinyl carbazole (PVK), are combined with (1) graphene (G) and / or graphene-like materials based nanomaterials and (2) graphene oxide (GO) chemically modified with a chelating agent such as but not limited to EDTA. The nanocomposite is homogenously deposited on the surface of the membrane.

The invention discloses a preparation and application of a europium base polymer with long fluorescence lifetime and capable of selective recognition of anion, and belongs to the technical field of detection. The method is as below: reacting a polymerizable neutral ligand vinyl-phen, a beat-diketone anion ligand and rare earth europium ions to obtain polymerizable europium monomers; adding the polymerizable europium monomers and N-vinyl carbazole monomers in a molar ratio of 1:10-100 into a polymer tube; adding an organic?solvent for complete dissolution; then adding a radical initiator; reacting at 60-80 DEG C for 10-72 h; and conducting reprecipitation, filtering, extraction, drying and solvent removal to obtain the europium base polymer with long fluorescence lifetime. The obtained europium base polymer with long fluorescence lifetime has fluorescence lifetime of 0.62-1.53 ms, good selectivity on fluorinions, acetate ions and dihydrogen phosphate ions and important application value in bioscience and environmental sciences.

The invention relates to a concrete water reducing agent. The concrete water reducing agent is characterized by being prepared from the following raw materials in parts by weight: 10 to 20 parts of acarboxyl modified N-vinyl carbazole / polyethylene glycol mono-allyl ether / 5-vinyl-1,2,4-oxadiazole-3-carboxylic acid ethyl ester copolymer, 5 to 10 parts of 3-aminopyrazine-2-carboxylic acid modified epoxy terminated hyperbranched poly(amine-ester), 2 to 4 parts of rare earth metal organic framework, 3 to 6 parts of N-sulfo chitosan and 30 to 40 parts of water. The invention also provides a preparation method of the concrete water reducing agent. The concrete water reducing agent is low in mixing amount, strong in water reducing performance and good in plasticizing effect, has no negative influence on the comprehensive performance of concrete, can obviously improve the flowability and the working performance of cement concrete of machine-made sand, improves the strength, the durability andthe thawing-freezing resistance of concrete, and is good in adaptability to the concrete.

The invention discloses a fluorescent probe for identifying hydrogen sulfide in lysosome. The fluorescent probe is 2-(9-(2-ethoxy ethyl ester)-2-(pyridyl-4-yl)vinyl)-9H-carbazolyl-3-yl)vinyl)-1-ethyl-3,3-dimethyl-3H-indolyl-1-iodine which is called PCAI for short, and the chemical structural formula is disclosed as Formula (I). The invention also discloses application of the fluorescent probe in detecting H2S in lysosome. The experiment proves that the fluorescent probe can identify lysosome and H2S in the lysosome through fluorescence enhancement; and the probe has potential application value in the field of targeted molecular markers of acidic regions of living cells.

The invention relates to a polymer electroluminescent material containing an amide iridium metal complex and a preparation method thereof, which belong to the synthetic material and electroluminescent material technology field. The invention discloses the polymer electroluminescent material containing the amide iridium metal complex, the metal complex of the polymer adopts a metal complex containing a 2-phenylpyridine structure, the molecular structural formula is (L<2>)2Ir(MA), wherein the L<2> signifies bidentateligand containing the 2-phenylpyridine, and the MA signifies bidentateligand containing amide structure and double bonds. The synthesized polymer is divided into two types, one is the homopolymer Poly (L<2>)2Ir(MA), of the metal complex, or the other is the homopolymer Poly VK-(L<2>)2Ir(MA) of the metal complex and the N-vinyl carbazole (N-VK). All the polymers containing the iridium metal complex synthesized in the invention have higher luminescence performance in the solution at room temperature, and can be used as the functional material in organic electroluminescent devices.

The invention discloses a lithium-sulfur battery cathode composite material and a preparation method thereof. According to the cathode composite material, elemental sulfur is cladded by an electric-conduction polymer poly(N-vinylcarbazole), the sulfur cathode material is guaranteed to have good electric conductivity, also sulfur and electro-discharge products thereof are constrained in the sulfur cathode material, so that relatively high sulfur utilization rate and cycling stability are obtained. According to the technical scheme, the disadvantages of sulfur as a lithium ion secondary cell cathode material are overcome, the lithium-sulfur battery cathode composite material, which is long in cycling life, high in capacity, green, environment-friendly, and simple in method, is prepared. The preparation method is simple, equipment is simple, raw material source is wide, cost is low, and the preparation method is in favor of industrial production.

The invention discloses a method for preparing N-vinyl carbazole. The method comprises the following reactions: carrying out a reaction of carbazole and acetylene to produce N-vinyl carbazole under conditions of taking DMSO as a solvent and adjusting the pH value with KOH, wherein the reaction temperature is 160-170 DEG C. The method has the advantages of simple process, easy operation, low cost, and high product yield.

The invention relates to a synthetic method of a polyvinylcarbazole / graphene composite material with the storage effect, which comprises the following steps: firstly preparing functionalized graphite oxide, further blending and dispersing polyvinylcarbazole and the functionalized graphite oxide in an organic solvent, finally adopting different reducing agents for reduction, and obtaining the polyvinylcarbazole / graphene composite material. The polyvinylcarbazole / graphene composite material with the storage effect has the following significant characteristics: 1) the preparation method can uniformly disperse the graphite oxide and the polyvinylcarbazole in the organic solvent through the functionalization of the graphite oxide, the experimental conditions are simple, and the operation is easy; 2) grapheme with excellent performances is introduced in the conductive polymer polyvinylcarbazole as an electron acceptor, thereby improving the transmission performance of a current carrier of the composite material and having better application prospects and economic benefits in the field of optoelectronic information materials.

A process for making a lithographic printing plate is provided that includes a step of producing a negative-working lithographic printing plate precursor comprising, above a support, a photopolymerizable photosensitive layer comprising a vinylcarbazole compound-derived monomer unit-containing acrylic polymer and / or a urethane-acrylic hybrid polymer, a step of imagewise exposing the negative-working lithographic printing plate precursor, and a step of developing the exposed negative-working lithographic printing plate precursor using a developer comprising (Component A) an organic solvent having a solubility in water at 20° C. of 1.5 to 7.0 g / 100 mL, (Component B) an amphoteric surfactant represented by Formula (I) below and / or Formula (II) below, and (Component C) water.

A process for making a lithographic printing plate enables a one-bath processable lithographic printing plate having excellent printing durability, ink laydown and resistance to staining during printing. The process includes a step of producing a negative-working lithographic printing plate precursor having, above a support, a photopolymerizable photosensitive layer containing a vinylcarbazole compound-derived monomer unit-containing acrylic polymer and / or a urethane-acrylic hybrid polymer, a step of image-wise exposing the negative-working lithographic printing plate precursor, and a step of developing the exposed negative-working lithographic printing plate precursor by means of a developer having a pH of 4 to 10, comprising (Component A) a compound represented by Formula (I) and / or Formula (II) below and (Component B) water, and having an organic solvent content of less than 5 mass %. The process does not comprise a washing step or a gumming step before or after the development step.

The invention belongs to the field of an organic-inorganic composite material and particularly relates to a polyvinyl carbazole intercalated hydrotalcite fluorescent film and a preparation method thereof. The poly(N-vinyl carbazole) and p-tert-butyl benzoic acid radical intercalated hydrotalcite film has a supermolecular structure, the crystal structure of the poly(N-vinyl carbazole) and p-tert-butyl benzoic acid intercalated hydrotalcite film is a crystal structure of hydrotalcite-like materials, the chemical formula of the poly(N-vinyl carbazole) and p-tert-butyl benzoic acid intercalated hydrotalcite film is [(M<2+>)[1-x>](M<3+>)][x](OH)2]<x+>(PTBBA<->)[x](PVK)[y].mH2O. By utilizing a benzene ring-enriched hydrophobic environment provided by p-tert-butyl benzoic acid radicals among hydrotalcite layers, the poly(N-vinyl carbazole) with excellent fluorescence property can be assembled among the hydrotalcite layers, in-situ polymerization can be realized under the irradiation of a mercury lamp, and the poly(N-vinyl carbazole) intercalated hydrotalcite film material can be prepared. The material is stable in intercalated structure, high in mechanical strength, and strong in corrosion resistance, obvious fluorescence is seen in a visible light area, and the polyvinyl carbazole intercalated hydrotalcite fluorescent film has wide application prospects as an optical material.

It is an object of the present invention to provide a process for making a lithographic printing plate that enables a one-bath processable lithographic printing plate having excellent printing durability, ink laydown and resistance to staining during printing.A process for making a lithographic printing plate is provided that includes a step of producing a negative-working lithographic printing plate precursor comprising, above a support, a photopolymerizable photosensitive layer comprising a vinylcarbazole compound-derived monomer unit-containing acrylic polymer and / or a urethane-acrylic hybrid polymer, a step of imagewise exposing the negative-working lithographic printing plate precursor, and a step of developing the exposed negative-working lithographic printing plate precursor by means of a developer having a pH of 4 to 10, comprising (Component A) a compound represented by Formula (I) below and (Component B) water, and having an organic solvent content of less than 5 mass %, wherein the process does not comprise a washing step or a gumming step before or after the development step. In Formula (I), R1 denotes a substituted or unsubstituted phenyl group, 1-naphthyl group, or 2-naphthyl group, and n denotes an integer of 4 to 20.

The invention provides an unconjugated organic phosphorus, oxide and rare earth coordination polymer as well as a preparation method and application thereof, which relate to an organic phosphorus, oxide and rare earth coordination polymer as well as a preparation method and application thereof and solve the problems that the traditional rare earth electroluminescent coordination polymer has large preparation difficult, long cycle, unstable quality and property, low brightness and efficiency, and the like. The polymer has the structural formula that the polymer can be prepared by using a polymerizable organic phosphorus, oxide and rare earth compound and vinyl carbazole as monomers and copolymerizing by free radicals; the polymerizable organic phosphorus, oxide and rare earth compound monomer is prepared from a polymerizable organic phosphorus and oxide compound neutral ligand, a beta-diketone anion ligand and rare earth center metal ions through matching reaction. The polymer is used for the luminescent layer material or the luminescent layer doping material of an electroluminescent device. The light starting voltage of the manufactured electroluminescent device is 12.5-21V, and the electroluminescent brightness is 15-150cd / m<2>. The polymer can be used as an electric active layer of a polymer electric storing device. The cycle of the method is short.

Disclosed is a soft and hard multi-block polymer and its synthesis method, which comprises using substituted aromatic ring, acrylic acid, methacrylic acid, vinylcarbazole and caprolactone monomers as raw material, carrying out organic metal coupling and atom transfer free radical polymerization reaction, and synthesizing a series of block polymers comprising conjugated oligomers and flexible water soluble / oil soluble soft segments, which can be used as the luminescent layer of organic electroluminescent material (OLED) and biological fluorescence detector.

The invention discloses an environment-friendly waterproof material which is characterized by being prepared from the following raw materials in parts by weight: 30-50 parts of 3, 6-dibromo-9-vinyl carbazole / bisphenol S polycondensate, 15-20 parts of vinyl-terminated polyurethane prepolymer modified coal pitch, 10-15 parts of vinyl-terminated nitrile rubber, 3-6 parts of hyperbranched polysiloxaneand 0.07-0.1 part of initiator. The invention also provides a preparation method thereof. The environment-friendly waterproof material disclosed by the invention is good in comprehensive performance,remarkable in waterproof effect, good in performance stability, weather resistance and high and low temperature resistance, and relatively small in environmental pollution.

The invention relates to preparation of monodispersed magnetic fluorescent core-shell nano-microspheres. The nano-scale monodispersed magnetic fluorescent core-shell microspheres with high magnetic response, high magnetic content and epoxy groups on surfaces are prepared by taking monodispersed high-magnetic response Fe3O4 prepared by a solvent thermal method as cores (CN1645530), taking GMA (glycidyl methacrylate) and polymerizable fluorescent monomers NVCz (vinyl carbazole) as functional monomers, simultaneously adding a quantity of cross-linking agent monomers and performing precipitation polymerization. The nano-scale monodispersed high-crosslinked magnetic fluorescent core-shell microspheres with good magnetic response, high surface cleanliness and active groups which can act with bioactive substances are obtained.

The invention relates to a method for synthesizing a metal-free heavy-atom-free long-life room-temperature phosphorescent polymer through microwave radiation. According to the method, the room-temperature phosphorescent polymer material with long service life is prepared from vinyl carbazole and an acrylamide monomer through free radical copolymerization under the action of microwaves, the phosphorescent service life is long at room temperature, meanwhile, the raw materials are easy to obtain, the preparation method is simple and convenient, the reaction time is short, and the product is non-toxic, pollution-free, heavy metal-free, halogen-free, good in water solubility and wide in application prospect.

The invention discloses a method for improving the thermal stability of alpha-AlH3, which comprises the following steps: carrying out acid pickling treatment on alpha-AlH3, and coating the acid-pickled alpha-AlH3 with a carbazole group-containing polymer to improve the thermal stability of alpha-AlH3; wherein the carbazole group-containing polymer is a single component or a mixed component of polyvinyl carbazole, poly(9-vinylcarbazole), poly(n-vinylcarbazole) and poly(N-ethyl-2-vinylcarbazole). According to the method for improving the thermal stability of the alphaAlH3, the thermal stabilityof the alpha-AlH3 is further improved on the basis of acid pickling, the alpha-AlH3 treated by the method has a lower decomposition rate, and the thermal stability is improved. The product can serve as a solid propellant fuel. The method is carried out at normal temperature and is safe, reliable and suitable for large-scale production.

The invention relates to a preparation method for carbazole and a derivative thereof. The preparation method comprises the following steps of: taking a phenylhydrazine derivative shown in structural formula (I) and a cyclohexanone derivative shown in structural formula (II) as raw materials, reacting in organic carboxylic acid to prepare an intermediate A, and then performing a dehydrogenation reaction to prepare carbazole or a derivative thereof. A carbazole derivative containing an olefin group can be obtained after reacting the carbazole or the derivative thereof with a compound.

The invention relates to a method for preparing a one-dimensional magnetic fluorescent nanochain by the induced precipitation condensation of a magnetic field. The method taking monodisperse high-magnetic responsiveness Fe3O4, prepared by adopting a solvent thermal process, as a core (CN1645530) and taking GMA (glycidyl methacrylate) and polymerizable fluorescent monomer NVCz (vinylcarbazole) as functional monomers comprises the steps of: adding certain crosslinking monomers, self assembling through magnetic field induction, and preparing the one-dimensional magnetic fluorescent nanochain with clean surfaces and permanent links in the precipitation condensation process.