11 results about "Polyacetylene" patented technology

This invention relates to the field of lithium-ion battery technology, specifically to a silicon-carbon material, its preparation method, and its application. The silicon-carbon material includes a core and a coating layer covering at least a portion of the surface of the core. The core includes nano-silicon material. The coating layer includes a flexible conductive polymer layer and a carbon layer existing between the core and the flexible conductive polymer layer. The flexible conductive polymer layer includes a conductive polymer having a conjugated structure. The conductive polymer includes at least one of polyaniline, polypyrrole, polyacetylene, polythiophene, polyquinoline, polyfluorene, polybenzothiadiazole, and poly(p-phenylenevinylene). The mass ratio of the conductive polymer to the total mass of the carbon layer and the core is (0.05-0.2):1. This invention, by constructing a shell structure with a "carbon layer-flexible coating layer" on the core, enables the silicon-carbon material with this core-shell structure to solve the problems of volume expansion, poor conductivity, and SEI layer instability of silicon materials in lithium-ion batteries.

Medical electrode comprising a base body (101) on which an electrically conductive first layer (102) and a cover layer (103) are arranged, the cover layer comprising an overhang (107) which partially covers the first layer (102), and an electrically conductive second layer (105) which is arranged on the first layer (102), the second layer (105) comprising an electrically conductive polymer selected from the group consisting of a polyacetylene, a polyvinyl alcohol, a polyfluorene, a polyphenylene, a polyphenylene vinylene, a polypyrene, a polyazulene, a polynaphthalene, a polypyrrole, a polycarbazole, a polyindole, a polyazepine, a polyaniline, a polyacene, a polythiophene, a polythiophene vinylene, a poly-p-phenylene sulfide, a polypyridine or functionalized derivatives, precursors or mixtures thereof;wherein the top layer (103) further comprises a recess (108), wherein the second layer (105) is arranged exclusively within the recess (108), and wherein the outwardly facing surface of the second layer (105) is spaced apart from the outwardly facing surface of the top layer (103), leaving a free area within the recess (108).

A cleaning device for clamps in a lithography apparatus includes a substrate having a front surface and a back surface opposite to the front surface, and a conductive layer provided on the front surface of the substrate. The conductive layer is configured to contact the clamp to dissipate the charge on the clamp and remove particles on the clamp via an electrostatic field generated between the conductive layer and the clamp. The conductive layer may include a conductive polymer. The conductive polymer may have a conductivity of at least about 1 S / cm. The conductivity of the conductive polymer is variable and can be adjusted to a desired value. The conductive polymer may include polyaniline, poly(p-phenylene), polythiophene, polypyrrole, poly(p-phenylene vinylene), trans-polyacetylene, combinations thereof, or derivatives thereof (e.g., polymer blends, copolymers, graft polymers, surface modifiers, surface treatment agents, additives, and / or fillers).

The invention relates to the technical field of sulfide solid-state batteries, in particular to a core-shell structure flame-retardant additive, a preparation method thereof and a sulfide solid-state battery. The core-shell structure flame retardant additive provided by the invention comprises a core material as well as a shell material carrier layer and a shell material polymer layer which sequentially coat the surface of the core material, the core material comprises a phosphorus flame retardant; the shell material carrier layer is prepared from one or more of sodium carboxymethyl cellulose, polyvinylidene fluoride, chitosan, polyacrylic acid, polyvinyl alcohol, sodium alginate, polymethyl methacrylate, carboxymethyl chitosan and carboxymethyl cellulose; the shell material polymer layer comprises one or more of polyaniline, polyvinylidene fluoride, polyethylene, vinylene carbonate, polyvinyl alcohol, polyacrylonitrile, polyether, polythiophene, polyacetylene and polypyrrole. The flame-retardant additive with the core-shell structure has the advantages that both electrochemical performance and safety can be considered, thermal response can be quickly carried out, the interface stability is good, toxic gas is diluted and released, and the engineering implementation is simple.

The invention provides a polyacetylene selenide compound as well as a preparation method and application thereof, and belongs to the technical field of high polymer chemistry and material science. The preparation method comprises the following steps: under the catalysis of silver nitrate and ammonia water, carrying out polymerization reaction on a 1, 2-benzisoselenazole-3 (2H)-ketone compound and a terminal alkyne compound in a dichloromethane solvent, and after the reaction is finished, carrying out post-treatment to obtain the polyalkyne selenide compound. The preparation method disclosed by the invention is mild in condition, efficient in reaction, high in yield and novel in product structure, and realizes in-situ construction of a novel polyacetylene selenide structure through a two-component polymerization reaction for the first time; the polyacetylene selenide prepared by the invention has high molecular weight, good thermal stability and high refractive property, and has wide application prospects in the field of high refractive materials.

The invention discloses a method for rapidly and efficiently synthesizing highly conjugated trans-polyacetylene at normal temperature and pressure, and belongs to the technical field of polymer synthesis. The method comprises the following steps: dispersing poly (2-BF3-vinyl imidazolium salt) serving as a precursor polymer in a solvent at room temperature to form a uniform system, then adding an alkaline elimination agent, performing elimination reaction on 2-BF3-imidazole groups on a precursor molecular chain by controlling the reaction time, and performing post-treatment and purification to obtain the high-conjugation trans-polyacetylene. High-temperature reaction conditions are not needed, synthesis can be efficiently completed at the room temperature, and the conjugate structure of the product trans-polyacetylene is good in integrity. In addition, the method has the advantages of stable reaction system, safe and simple operation, easy separation of eliminated products, and suitableness for industrial large-scale production.

Mechanochromic impact sensors, which can further include some temperature sensing capability, are disclosed. The sensors are based on core-shell vesicles having a core and a shell material layer at least party surrounding the core. The core includes crystalline polyacetylene. The shell material layer includes silk fibroin. The sensors provide impressively large dynamic range, thereby allowing quantitative measurement of blunt force impact across a new range of forces with a single sensor.

Drum heads including mechanochromic impact sensors are disclosed, along with other live-event memorabilia recording concepts. The sensors are based on core-shell vesicles having a core and a shell material layer at least party surrounding the core. The core includes crystalline polyacetylene. The shell material layer includes silk fibroin. The sensors provide impressively large dynamic range, thereby allowing quantitative measurement of blunt force impact across a new range of forces with a single sensor.

The utility model relates to the technical field of cover plates, in particular to an anti-interference cover plate taking ABS (Acrylonitrile Butadiene Styrene) plastic and propyl alcohol composite carbon nanotubes as a substrate, which comprises a cover plate and an anti-interference structure, and the anti-interference structure is arranged on one side of the cover plate. The anti-interference layer is made of single-walled carbon nanotubes and has certain anti-interference capacity, electromagnetic interference can be shielded, meanwhile, physical interference can be resisted, the reinforcing layer and the cover plate are made of ABS plastic, the reinforcing layer is of a honeycomb structure, the strength of the anti-interference structure is guaranteed, and the anti-interference performance of the cover plate is improved. The material of the anti-electromagnetic layer is a net-shaped structure woven by silver fibers, the shielding effect is excellent, the net-shaped structure is of a triangular structure, the stability is high, the anti-deformation capacity is high, the material of the connecting layer is a polyacetylene material, certain elasticity is achieved, meanwhile, certain anti-interference capacity is achieved, the sealing performance between the cover plate and the shell is guaranteed, and the service life is prolonged. Therefore, the anti-interference performance of the cover plate is realized, the external electromagnetic interference can be effectively blocked, and the stable operation of equipment in a complex electromagnetic environment is ensured.

This invention discloses polyacetylene compounds, their preparation methods, and their applications in the preparation of anti-inflammatory and antibacterial drugs, belonging to the pharmaceutical field. The polyacetylene compounds of this invention are isolated from Atractylodes lancea plants and possess significant anti-inflammatory and antibacterial activities, making them suitable for the preparation of anti-inflammatory and antibacterial drugs. This invention provides candidate compounds for the development of new anti-inflammatory and antibacterial drugs and is of great significance for the development and utilization of medicinal plant resources. The polyacetylene compounds of this invention can be used alone, in combination, or as pharmaceutical compositions in the preparation of anti-inflammatory or antibacterial drugs, and can be prepared as powders, pills, capsules, tablets, films, ointments, granules, aerosols, or gels, etc.

To provide a new substituted polyacetylene having a ketocoumarin skeleton, which is expected to be applied to a photo-electroluminescent material, and to provide an industrially advantageous method for producing the same.SOLUTION: The substituted polyacetylene has a ketocoumarin skeleton containing a repeating unit represented by general formula (1). (In the formula, R1 represents a group selected from alkyl groups, cycloalkyl groups, aryl groups, heteroaryl groups, aralkyl groups, alkoxy groups, amino groups, carbonyl groups, carboxy groups, hydroxy groups, and nitro groups, and the alkyl groups, cycloalkyl groups, aryl groups, heteroaryl groups, aralkyl groups, alkoxy groups, and amino groups may have substituents. X represents a halogen atom. N represents an integer of 0 to 3. ) SELECTED DRAWING: None