26results about How to "Excellent electrochromic performance" patented technology

The invention belongs to the technical field of electrochromic materials, and provides a red-transparent display electrochromic polymer and a preparation method thereof. The method disclosed by the invention comprises the following steps: carrying out ring formation reaction on N-(2, 5-dibromophenyl)-2-ethylhexyl thioamide, potassium ferricyanide and sodium hydroxide to obtain 4, 7-dibromo-2-(heptane-3-yl) benzothiazole; the preparation method comprises the following steps: carrying out substitution reaction on EDOT, n-butyllithium and tributyltin chloride to obtain EDOT-Sn; the preparation method comprises the following steps: carrying out Stille coupling reaction on 2, 4, 7-dibromo-2-(heptane-3-yl) benzothiazole and EDOT-Sn, and then carrying out electrochemical polymerization reaction to obtain the electrochromic polymer. A pure donor (D) type organic molecule is obtained by the method, a corresponding electrochromic film is prepared by electrochemical polymerization, reversible switching between red and transparency is realized, and the electrochromic film has good cycle stability and high color change response speed.

The invention relates to the technical field of electrochromism, in particular to an orthorhombic crystal phase Nb18V4O55 electrochromic film and a preparation method and application thereof. The orthorhombic crystal phase Nb18V4O55 electrochromic thin film not only has excellent electrochromic capacity, but also can realize a'warm state 'mode of electrochromic dual-band regulation and control by means of intrinsic properties of materials, meanwhile, has a large optical modulation amplitude, further has the characteristics of rapid dynamic response and high cycling stability, and can be applied to the field of electrochromic devices. Due to the characteristics, the method has commercial application potential in the fields of intelligent windows, display equipment and the like.

The invention relates to a preparation method of an amorphous and crystal WO3 double-layer electrochromic film, and belongs to the technical field of oxide films. The preparation method comprises the following steps: ultrasonically cleaning a conductive glass ITO (Indium Tin Oxide) substrate, preparing an amorphous WO3 thin film by adopting a radio frequency magnetron sputtering method, annealing to obtain a crystalline WO3 thin film 3, and continuously preparing the WO3 thin film by adopting the magnetron sputtering method to obtain the double-layer thin film. The preparation method has the advantages that the prepared double-layer electrochromic film not only has good cycling stability of crystalline WO3, but also has large transmittance modulation amplitude and short color change response time of amorphous WO3. The upper amorphous structure layer is beneficial to shortening the response time of film discoloration, meanwhile, the lower crystalline structure layer ensures the cycling stability of the film, and due to the synergistic effect of the amorphous structure layer and the crystalline structure layer, the heterostructure WO3 has the advantages of amorphous WO3 and crystalline WO3, so that the excellent electrochromic comprehensive performance is shown. Meanwhile, the regulation and control mechanism of crystalline and amorphous WO3 materials in the electrochromic process is also studied.

The invention belongs to the technical field of electrochromic materials, and discloses a transparent-red changing viologen derivative as well as a preparation method and application thereof. The preparation method of the transparent-red changing viologen derivative comprises the following steps: reacting 1, 2-bis (4-pyridyl) ethylene, a bromine substitute 1 and a solvent to obtain an intermediate product; reacting the intermediate product, a bromine substitute 2 and a solvent to obtain an intermediate; and mixing the intermediate, halogen-containing salt and water, and reacting to obtain the transparent-red variable viologen derivative. The obtained transparent-red changing viologen derivative shows reversible electrochemical oxidation-reduction properties, meanwhile, shows high contrast ratio and has good electrochromic performance, the synthesis method of the viologen derivative is simple, the yield is high, the color range of viologen compounds is enriched, and the application prospect is wide. The method has potential application prospects in the field of electrochromism.

The invention discloses a silane modified composite electrochromic material and a preparation method thereof, and relates to the field of electrochromic materials, and the silane modified composite electrochromic material is composed of tungsten trioxide, polyaniline, a titanium element, a tantalum element, an anilino silane coupling agent, an organic tin catalyst, a conductive substrate, an ethanol aqueous solution and an aniline electrolyte. The tungsten trioxide-titanium dioxide is doped with elements such as titanium and tantalum, the insertion / output quantity of Li < + > can be increased through proper doping, the optimized tungsten trioxide-titanium dioxide further has the rapid dynamic property and the cycling stability, the double-layer composite thin film is characterized in that the inner layer is a tungsten trioxide nanopore array, and the outer layer is a sputtering-deposited tungsten trioxide-titanium doped film; therefore, the response speed and the coloring efficiency can be improved, and the electrochromic performance of the tungsten trioxide film can be improved.

The invention relates to the technical field of electrochromic materials, and particularly discloses a water vapor blocking electrochromic dimming film and a packaging method thereof. According to the SPD light adjusting film, self-adhesion installation of the light adjusting film is achieved through the arrangement of the press-fit adhesive layer, under the synergistic effect of the water blocking film and the composite water blocking film, the SPD light adjusting film is slightly affected by water vapor, ideal transmittance and haze can be kept for a long time in a high-humidity environment, and therefore the SPD light adjusting film has the long service life and is suitable for popularization and application. Frequent replacement is not needed, and the maintenance cost of a building can be effectively reduced.

The invention relates to a monomer containing 7-methyldibenzo [c, g] carbazole and triphenylamine, namely 4-({9-[(4-aminophenyl) (4-methoxyphenyl) amino]-7-methyldibenzo [c, g] carbazole-5-yl} (4-methoxyphenyl) amino) aniline and a preparation method and application of polyamide. In order to solve the problems that polyamide materials are low in solubility in organic solvents, difficult in film forming, poor in cycling stability, narrow in color changing range and single in function, two triphenylamine groups are constructed on 7-methyldibenzo [c, g] carbazole, and methoxyl is introduced to triphenylamine, so that the solubility and the stability of the polymer are improved; the polymer disclosed by the invention has excellent electrochromic performance, excellent cycling stability, fast switching time and high optical contrast. Meanwhile, in order to solve the multifunctionality of the material, a naphthalene unit is added into the molecular structure, and the polymer has fluorescence emission. The fluorescent probe can be applied to the fields of display, rearview mirrors and camouflage and fluorescence detection of p-trinitrophenol.

The present invention discloses a method for preparing a WO3 nano-cone array electrochromic film, which is applied to the field of electrochromic materials and devices. In view of the fact that the film structure prepared by the existing magnetron sputtering method is too dense and smooth, resulting in a limited effective contact area with the electrolyte, which in turn limits the further improvement of the performance of the electrochromic device, the present invention proposes a targeted solution; the present invention uses glass coated with indium tin oxide (ITO) on the surface as a substrate, places a silver target and a tungsten target at a DC target position and a radio frequency target position respectively, and uses a co-sputtering coating technology to induce the growth of a WO3 nanoparticle seed layer by doping metallic silver; and uses a reactive sputtering coating technology to grow a WO3 nano-cone array structure on the WO3 nanoparticle seed layer by doping europium. The WO3 nano-cone structure film significantly improves the electrochromic performance compared to the WO3 dense film.

The application discloses a kind of double ion modified Bi2WO6 electrochromic thin film materials and preparation method thereof, and relates to the field of electrochromic thin film.The preparation method of the application includes the following steps: (1) hydrothermal controllable preparation Bi2WO6 Nanometer powder;(2) using hydrogen ion and alkali metal ion to Bi2WO6 Nanometer powder is carried out double ion replacement reaction to modify Bi2WO6 Crystal lattice structure;(3) the Bi2WO6 Nanometer powder after double ion modification is made into the nanometer dispersion liquid with good dispersibility, then double ion modified Bi2WO6 electrochromic thin film material is obtained by spin coating process.The method retains the key structural characteristics of precursor phase by soft chemical modification, and the double ion modified Bi2WO6 electrochromic thin film shows excellent electrochromic performance in near-infrared band, and the optical modulation amplitude is greatly increased.The preparation method is simple, safe and controllable, low in cost, and has wide application prospect.

This invention relates to conjugated polymers containing dibenzofuran (thiophene) and carbazole units, their preparation methods, and applications. To address the problems of poor optical contrast, slow response time, and poor cycling stability of existing conjugated polymers as electrochromic materials, this invention uses 2,8-dibromodibenzofuran or 2,8-dibromodibenzothiophene as reactants, reacting them with 9-hexyl-3,6-bis(4,4,5,5-tetramethyl-1,3,2-dioxoborane-2-yl)-carbazole or 9-phenyl-3,6-bis(4,4,5,5-tetramethyl-1,3,2-dioxoborane-2-yl)-carbazole to form conjugated polymers with dibenzofuran (thiophene) and carbazole units in the main chain. The conjugated polymers of this invention exhibit excellent electrochromic properties, including excellent cycling stability, fast switching time, high optical contrast, and low voltage start-up. This invention is expected to be applied in fields such as smart windows, rearview mirrors, military camouflage, and electronic tags in the construction and automotive industries.

The present invention discloses an oxadiazole-containing aromatic amine electrochromic compound and a preparation method and use thereof, wherein the oxadiazole-containing aromatic amine electrochromic compound exhibits excellent thermal stability and excellent dual-color electrochromic effect. The oxadiazole-containing aromatic amine electrochromic compound provided by the present invention is applied to a two-electrode system electrochromic device, and under the condition of adjusting different input voltages, an efficient, reversible, high-contrast chromaticity electrochromic effect can be achieved, which has broad application prospects in the fields of electrochromic glass, display, etc.

The application provides a thermosetting viologen electrochromic solution and an electrochromic device. The thermosetting viologen electrochromic solution comprises the following components at the following concentrations: 1.5-4.5 g / mL of a diepoxy functional group molecule, 0.5-0.8 g / mL of an anhydride curing agent, 0.1-0.4 g / mL of a viologen compound, and 0.05-0.3 g / mL of a counter electrode material; the diepoxy functional group molecule is at least one selected from bisphenol f diglycidyl ether, bisphenol a diglycidyl ether and bisphenol s diglycidyl ether. The electrochromic device comprises a solid electrochromic layer formed by curing the thermosetting electrochromic solution. The application optimizes the formula, so that the electrochromic solution can achieve thermal curing while ensuring good electrochromic performance, solves the problems of easy leakage and poor safety of the viologen electrochromic device, and can be thermally cured and formed, avoiding the potential adverse effects of the ultraviolet curing method on the performance of the device.

The invention discloses a preparation method of Prussian blue-based ink and an electrochromic device. The method comprises the following steps: S01, preparing Prussian blue particles; s02, carrying out surface modification on the Prussian blue particles by adopting ferrous cyanide ions and n-octylamine to obtain modified Prussian blue particles; and S03, stirring the modified Prussian blue particles and ethanol to obtain the Prussian blue-based ink. The film-forming property of the Prussian-blue-based ink prepared by the method is improved, and the prepared electrochromic device containing the Prussian-blue-based ink coating shows the characteristics of high optical modulation rate, quick response and excellent long cycle stability.

The present invention discloses a mononuclear metal complex and a preparation method and use thereof. The structure of the mononuclear metal complex is: [M(A)(X) 2 ]. Wherein M is a metal element; A is a dipyridine ligand; and X is a halogen ion. The mononuclear metal complex provided by the present invention exhibits excellent thermal stability in air or an inert atmosphere, and has good stability in a solution while also exhibiting excellent electrochromic properties. More importantly, the mononuclear metal complex provided by the present invention is applied to a two-electrode system electrochromic device, and a reversible, high-contrast electrochromic effect can be achieved under a relatively low input voltage condition of 1.1V, and thus has potential application value in the fields of electrochromic glass and the like.

The application discloses a kind of conjugated polymer based on alkyl-substituted phenyl and its preparation method and application, belong to polymer material technical field.The conjugated polymer provided in the application has structural formula as shown in formula (I):In formula (I), X1-X4 each independently is H or R, and at least one of X1-X4 is R.The alkyl-substituted phenyl is used as intermediate unit in the application, 3,4-ethylenedioxythiophene is used as electron-donating unit, by introducing benzene ring, so that rigid coplanar existence fusion ring structure in molecule, enhance charge flow, again combined with the alkyl of specific substitution quantity and substitution position, can adjust the electronic distribution and conjugated chain length of conjugated polymer, obtain the conjugated polymer with good electrochromic performance such as low bandwidth, wide absorption range, fast response time, good optical transmittance, good stability, the conjugated polymer has wide application in the preparation of electrochromic material or electrochromic device.

The present application adopts inkjet printing and non-catalyst chemical nickel plating method to deposit metal nickel on transparent nylon net and silk net, realizes the preparation of low-cost large-scale flexible transparent conductive substrate with controllable morphology, and is suitable for large-scale mass production. The present application is very beneficial to the integration of planar microelectronic devices. Based on the technology, a flexible transparent Zn net electrode is prepared by electroplating Zn on the Ni-P pattern nylon net. The ZECD window with zinc net anode and prussian blue (PB) cathode shows significant electrochromic performance, including fast switching time, high optical contrast and excellent cycle performance. These ZECDs are also very suitable for solar charging intelligent windows, which can further solve the problem of solar intermittency. These findings open up new opportunities for energy storage and conversion transparent devices.

The invention discloses a conjugated polymer material capable of achieving neutral green / black-transparent electrochromic performance and a preparation method and application thereof. The conjugated polymer material (IV) disclosed by the invention is prepared from a cyclic ether modified p-dibromobenzene ring monomer (I), a thiophene derivative ProDOT monomer (II) and a D-A-D unit ProDOT-BTD-ProDOT coupling monomer (III) through a copolymerization reaction; an electrochromic polymer film processed from the conjugated polymer material has application prospects in the fields of intelligent windows, intelligent glasses, displays, electronic paper and the like; in the material provided by the invention, the cyclic ether modified p-dibromobenzene ring monomer effectively reduces the oxidation potential of the conjugated polymer, improves the electrochromic performance of the black / green-transparent electrochromic film, and can realize stable and reversible transformation; # imgabs0 #

The invention discloses a metal ion doping method for enhancing electrochromic cycling stability of titanium dioxide and a product of the metal ion doping method, and belongs to the technical field of electrochromic composite materials. According to the method, ion doping is adopted, a secondary hydrothermal technology is adopted, a primary one-dimensional structure with an imperfect structure and an imperfect crystal form is firstly formed, then metal salt is added to enable doped metal ions to partially enter titanium dioxide crystal lattices, heat preservation treatment is carried out at a relatively low temperature, and a stable one-dimensional structure crystal form with a longer length-diameter ratio is formed. According to the method, the morphology of titanium dioxide is not greatly influenced, but the ion diffusion rate is effectively increased, the electrochemical activity of the composite film is remarkably enhanced, the structure stability is maintained, the ion transmission performance is improved, the morphology structure is not easily damaged, and the preparation method is suitable for industrial production. The prepared metal ion doped titanium dioxide film has the characteristics of good electrochromism performance and excellent cycle stability.

The invention relates to triphenylamine polyamide containing a quinoxaline structure and a preparation method and application of the triphenylamine polyamide. The invention relates to the triphenylamine polyamide containing the quinoxaline structure and the preparation method and application of the triphenylamine polyamide containing the quinoxaline structure. The invention aims to prepare polyamide with excellent chemical stability and good electrochromism capability, and solves the problems of difficulty in solution processing, poor film forming effect, poor electrochromism cycling stability and the like of polyamide. The novel polyamide containing the quinoxaline structure is formed by taking the quinoxaline structure as a mother nucleus, grafting 4-methoxy-4 '-nitrodiphenylamine to benzene rings on two sides in a derivative structure of the quinoxaline structure, reducing nitro into amino, and performing condensation polymerization on an obtained diamine monomer and dicarboxylic acid. The polyamide disclosed by the invention has good solubility and film-forming property, the absorption and fluorescence intensity of the polyamide are obviously changed in the voltage change process, and the polyamide shows high optical contrast and long-term cycling stability in the aspect of electrochromism; and under the action of the explosive, the fluorescence disappears. The material can be applied to the field of multifunctional materials for electrochromism, fluorescence display, explosive molecule detection and the like.

The invention discloses a preparation method of a NiO / Co3O4 composite film for electrochromism, which comprises the following steps: preparing a NiO film by adopting an optimized hydrothermal method, and depositing Co3O4 nanoparticles on the NiO film by taking the NiO film as a reaction substrate and adopting an electrodeposition method to finally obtain the NiO / Co3O4 composite film. According to the prepared composite film, the response time of NiO is prolonged, the electrochromism efficiency is improved, the improvement of the electrochromism performance is promoted, the preparation method is simple and easy to operate, and the overall cost is low.

The invention discloses a preparation method of a polymethyl methacrylate / succinonitrile (PMMA / SN) composite electrolyte for electrochromism. The method comprises the following steps: firstly, preparing a PMMA gel electrolyte by adopting a solution casting method, and adding SN with different proportions on the basis of preparing the PMMA gel electrolyte to prepare the PMMA / SN composite electrolyte. The PMMA / SN electrolyte electrochromic device obtained by the preparation method disclosed by the invention has good electrochromic performance. The preparation method provided by the invention is simple and easy to operate, has practical feasibility and is low in overall cost.

The invention provides a deuterium-containing polymer as well as a preparation method and application thereof. The polymer provided by the invention is based on a polymer containing a deuterium acceptor unit, i.e., an isotope-deuterium atom of a hydrogen element is introduced to a benzene ring or an anthracene ring of the electron acceptor unit, and a thienyl derivative is used as a terminal donor unit. The deuterium-containing polymer disclosed by the invention has good electrochromic performance, such as the characteristics of short response time, good optical transmittance, good stability and the like, and has wide application in preparation of electrochromic devices. The invention also provides a preparation method and application of the deuterium-containing polymer.

This invention discloses a method for preparing an electrochromic ion storage layer thin film, comprising the following steps: S1: reacting terephthalaldehyde or a terephthalaldehyde derivative with 2-acetylpyridine or a 2-acetylpyridine derivative to generate 1,4-bis[1,5-dioxo-1,5-bis(2-pyridyl)pentan-3-yl]benzene or a derivative thereof; then reacting it with ammonium acetate to obtain an organic ligand; reacting it with RuCl2(DMSO)4 to obtain a metal supramolecular polymer; S2: mixing it uniformly with a solvent and dimethylformamide to obtain an electrochemical deposition precursor solution; S3: depositing it at a constant potential via electrochemical deposition to obtain the electrochromic ion storage layer thin film. The thin film prepared by this invention not only has advantages such as fast response speed, high coloring efficiency, and wide optical modulation range, but also has good cycling stability.

The invention discloses a preparation method of a tungsten oxide-cerium acetate (WO3-CA) composite porous electrochromic glass film. The preparation method comprises the following steps: firstly preparing a precursor solution containing a tungsten source, then respectively adding cerium acetate with different concentrations, preparing a pure WO3 film and a cerium acetate-doped tungsten oxide film by adopting a hydrothermal method and heat treatment, and preparing the WO3-CA composite porous electrochromic glass film. The WO3-CA composite porous electrochromic glass film obtained by the preparation method disclosed by the invention has good electrochromic performance. The provided preparation method is simple and easy to operate and has practical feasibility, and the prepared WO3-CA composite porous electrochromic glass film is low in cost and free of pollution.

The invention discloses a preparation method of electrically controlled negative oxygen ion releasing cotton fabric, which comprises the following steps: taking a conventional cotton fabric, soaking it in an ethanol solution and completely soaking it, then taking out the cotton fabric, washing it with water, drying it, and then soaking it in a hydrochloric acid solution of aniline and completely soaking it, then adding a hydrochloric acid solution of ammonium persulfate and reacting it fully, taking out the cotton fabric, washing it with water, drying it, and then soaking it in a composite finishing liquid, taking it out and drying it. The conductive cotton fabric and the composite finishing liquid are formed, and after a post-finishing method, an electrically controlled negative oxygen ion releasing cotton fabric is obtained, the functional finishing of polyaniline makes the cotton fabric conductive, and the introduction of rare earth oxide / graphene makes the cotton fabric have the function of electrically releasing negative oxygen ions, which lays a foundation for the development of the functional cotton fabric material for electrotherapy massage products.

The invention belongs to the technical field of organic synthesis, and provides a star-structure carbazole derivative, a preparation method thereof and a carbazole conductive polymer. The preparation method comprises the following steps: mixing 10-phenyl-10H-phenothiazine, N-bromosuccinimide and a first organic solvent for reaction to obtain an intermediate; and mixing the intermediate with 9H-carbazole-2-boronic acid pinacol ester, tetra (triphenylphosphine) palladium, an accelerant and a second organic solvent for reaction to obtain the star structure carbazole derivative. And mixing the star-structure carbazole derivative with an electrolyte solution, and carrying out cyclic voltammetry electrochemical polymerization to obtain the carbazole conductive polymer. The method is simple and few in by-products, and the star-structure carbazole derivative obtained by the method is of a non-coplanar star structure and is beneficial to intercalation and deintercalation of electrolyte ions, so that the carbazole conductive polymer has excellent electrochemical performance and energy storage property, and meanwhile, the conductive polymer also has excellent electrochromism performance.