16results about How to "Wide absorption range" patented technology

The invention relates to the technical field of photodynamic, in particular to an all-organic nano photosensitizer with high singlet oxygen generation activity as well as a preparation method and application of the all-organic nano photosensitizer. The preparation method comprises the following steps: mixing 3-amino-1, 2, 4-triazole and phosphonitrilic chloride trimer, and sequentially carrying out thermal polymerization reaction and copolymerization heat treatment to obtain P-C3N5; the method comprises the following steps: carrying out ultrasonic mixing on P-C3N5, a 3, 4, 9, 10-perylenetetracarboxylic diimide solution and water, standing, filtering, and washing and drying filter residues to obtain P-C3N5 / PDI; mixing the P-C3N5 / PDI with a nitric acid solution, carrying out heat treatment, and washing and drying the obtained heat-treated substance to obtain a dried substance; mixing the dried substance with sodium hydroxide and water, and then carrying out heating treatment to obtain a heated substance; and centrifuging the heated substance, and dialyzing the obtained clear liquid to be neutral to obtain the all-organic nano photosensitizer. The all-organic nano photosensitizer material has good water dispersibility and can efficiently generate singlet oxygen under near-infrared light.

This invention discloses a D-A-D type α-cyanopyrrolopyrrole photothermal material, its preparation method, and its applications. The material uses α-cyanopyrrolopyrrole as the acceptor unit and triphenylamine as the electron donor unit, with furan and thiophene as π-bridges, respectively. Compounds TPA-O and TPA-S were prepared via Suzuki reaction, oxidation reaction, cyclization reaction, and condensation reaction. The photothermal material of this invention exhibits broad spectral absorption, narrow bandgap, and excellent photothermal stability. Under 808 nm laser light (1 W·cm⁻¹), it achieves [the desired effect]. ‑2 Under irradiation, TPA-O solid powder can be rapidly heated to 265℃; under simulated sunlight (1 kW.m... ‑2 Under irradiation, the effective evaporation rate of TPA-O solid powder in the water evaporation experiment was 1.458 kg·m⁻¹. –2 .h –1 When integrated into a thermal power generation device, the maximum output voltage reaches 230 mV.

The present invention relates to an X-ray resistant fiber and a preparation method and application thereof. The X-ray resistant fiber comprises a fiber body and a pleated coating wrapped on the surface of the fiber body; the coating comprises a coating body and radiation-resistant particles I dispersed therein; the materials of the fiber body and the coating body are both elastic polymers; the preparation method of the X-ray resistant fiber is as follows: firstly spinning a spinning solution containing a fiber body material, radiation-resistant particles II and a solvent a to obtain a composite fiber, then using an impregnation solution containing a coating body material, radiation-resistant particles I and a solvent b to impregnate and finish the composite fiber in a pre-stretched state, removing the stretching force after drying, and obtaining the X-ray resistant fiber; the application is: making the X-ray resistant fiber into a functional layer of an X-ray resistant elastic fabric. The present invention effectively solves the problem that most lead-free clothing in the prior art has low radiation protection performance and poor wearing performance.

The invention discloses an organic small molecule compound capable of distinguishing and detecting hydrazine and hypochlorite as well as a preparation method and application of the organic small molecule compound. Diketopyrrolopyrazine and nitrogen-containing aromatic primary amine are subjected to a condensation reaction and coordinated with BF3. Et2O to obtain a PzDP-PPAB compound with an electron push-pull effect, and the maximum absorption peak and emission peak of the compound are located in a near-infrared region. In an organic solvent, PzDP-PPAB is subjected to an irreversible chemical reaction with hydrazine and hypochlorite so as to realize different detection of two substances, the detection limit of hydrazine is 0.04 [mu] mol / L, the detection limit of hypochlorite is 0.059 [mu] mol / L, and the method has the advantages of simple operation, sensitive reaction, naked eye detection and the like.

The invention belongs to the technical field of wastewater treatment agent synthesis, and particularly relates to an environment-friendly wastewater treatment agent and a preparation method thereof.The environment-friendly wastewater treatment agent is prepared from 6-9 parts of corncob, 3-5 parts of natural zeolite, 8-10 parts of polyethylene glycol, 1-3 parts of NiFe2O4, 0.2-0.5 part of GQDs, 1.5-2.5 parts of a phosphoric acid solution and 25 parts of N, N-dimethylformamide; according to the invention, corncob is used as a main material to prepare activated carbon, natural zeolite is used for pore forming and heavy metal adsorption, NiFe2O4 is selected as a magnetic material, polyethylene glycol is used as a surfactant to treat the activated carbon to form an adsorption film to promote adsorption of NiFe2O4, existence of natural zeolite prevents NiFe2O4 from occupying pores of the activated carbon, and corn straw is used for preparing GQDs to broaden the light absorption range and improve the photocatalytic performance. The wastewater treatment agent can be applied to multiple fields, multiple material characteristics are integrated, and the efficiency and the application range of the wastewater treatment agent are improved.

The invention discloses a preparation method and application of a two-dimensional nano titanium carbide / nine-cobalt octasulfide heterojunction photocatalytic material, and aims to solve the problems that in the H2O2 preparation process of an existing photocatalyst, the light absorption range is mainly concentrated in the red and near-infrared light regions of visible light, and the photon-generated carrier separation efficiency is low. The preparation method comprises the following steps: 1, sequentially adding CH3CSNH2 and NaOH into a cobalt nitrate solution, and stirring and mixing at normal temperature to obtain a Co9S8 matrix; 2, adding titanium aluminum carbide into a hydrofluoric acid solution, stirring and reacting for a long time to obtain precursor Ti3C2 powder, dispersing the precursor Ti3C2 powder into a dimethyl sulfoxide solution, and stirring and dispersing to obtain Ti3C2 powder; and 3, preparing the Ti3C2 / Co9S8 heterojunction photocatalytic material. The Ti3C2 / Co9S8 heterojunction photocatalytic material prepared by the invention can expand the absorption range of visible light, and has excellent photocatalytic H2O2 production activity.

The present application relates to the technical field of cathode interface materials, in particular to a non-conjugated acceptor-acceptor type pyrene diimide polymer, a preparation method thereof, a cathode interface material and a semiconductor device. The non-conjugated acceptor-acceptor type pyrene diimide polymer comprises a pyrene diimide unit and a conjugated acceptor unit polymerized with the pyrene diimide in a non-conjugated manner, and the conjugated acceptor unit is selected from the pyrene diimide unit or other electron-deficient acceptor units; the ultraviolet-visible light absorption range of the other electron-deficient acceptor units is 250-650 nm. When the non-conjugated acceptor-acceptor type pyrene diimide polymer is used as a cathode interface material, it not only has a lower LUMO level, but also increases the ultraviolet-visible light absorption range, thereby widening the light absorption range of the solar cell device and improving the short-circuit current density of the solar cell device.

The invention relates to the technical field of organic photoelectric devices, in particular to a flexible wide-spectrum organic photoelectric transistor based on a polymer micron line array and a preparation method of the flexible wide-spectrum organic photoelectric transistor. The flexible wide-spectrum organic phototransistor comprises a substrate, a grid electrode arranged on the substrate, a dielectric layer arranged on the grid electrode, a source electrode and a drain electrode which are arranged on the dielectric layer, and an organic polymer micron line array arranged between the source electrode and the drain electrode, the organic polymer micro-wire array is a PTQ10 micro-wire array which is assembled through capillary liquid bridge confinement. According to the flexible wide-spectrum organic phototransistor disclosed by the invention, the PTQ10 micron line array is used as a channel material, efficient carrier transmission is realized by utilizing highly ordered accumulation of PTQ10 molecules, and the mobility and responsivity of a device are improved.

The application discloses a kind of phthalocyanine copper / inverted pyramid perovskite heterojunction photodetector and preparation method, comprising the following steps: 1) etching out the silicon piece with pyramid surface microstructure, as the base of growing perovskite single crystal;2) preparation perovskite solution, utilize silicon piece and glass piece as the frame of growth area restriction, utilize seed growth method, space limited method and inverse temperature crystallization method combined growth method preparation surface pyramid perovskite single crystal;3) utilize thermal evaporation in perovskite single crystal surface evaporation phthalocyanine copper film formation heterojunction, then utilize conductive carbon paste as upper and lower electrode preparation photodetector.The photodetector prepared by the application is stable at normal temperature and pressure, and has better photoelectric response relative to the control group device in a high humidity environment, and the device has good long-time humidity stability, which has guiding significance for the future high-performance photodetection field in high humidity environment such as sea, ship and island.

The present invention relates to the technical field of photovoltaic device preparation, and in particular to a preparation method, product and application of a perovskite microcrystal. The perovskite microcrystal has a tetragonal crystal structure; the defect state density is 10 10 ‑10 13 cm ‑3 ; The general structural formula is ABX3, wherein A is at least one of MA, FA, and Cs; B is Pb; and X is at least one of I, Br, and Cl. The perovskite microcrystals maintain full absorption in the visible light range of 300-850nm, have good stability, and have good photoelectric properties. The present invention uses an anti-solvent-assisted inversion crystallization method to quickly prepare high-quality hexahedral perovskite microcrystals at a relatively low temperature. The micron-sized single crystals have a tetragonal crystal structure, and their production cycle is much shorter than that of bulk single crystals, and the raw material utilization rate is higher, which is more suitable for industrial production.

The invention discloses a bismuth-rich bismuth oxyiodide heterojunction photocatalyst as well as a preparation method and application thereof. The bismuth-rich bismuth oxyiodide heterojunction photocatalyst is formed by stacking bismuth-rich Bi4O5I2 nanosheets and Bi7O9I3 nanosheets layer by layer. The preparation method comprises the following steps: mixing bismuth nitrate pentahydrate with potassium iodide, adjusting the pH value of the solution to form a precursor, and calcining the precursor to obtain the bismuth-rich bismuth oxyiodide heterojunction photocatalyst. The bismuth-rich bismuth oxyiodide heterojunction photocatalyst has the advantages of being high in light absorption capacity, low in lattice mismatch degree, high in photo-induced electron-hole separation efficiency, high in photocatalytic oxidation capacity and the like, the preparation method has the advantages of being low in raw material cost, simple and convenient in synthesis process, easy in condition control, short in consumed time and the like, the continuous batch production potential is high, and industrial utilization is facilitated. The bismuth-rich bismuth oxyiodide heterojunction photocatalyst can be used for degrading antibiotics in wastewater, has the advantages of simple application method, high degradation efficiency and good reusability, and has a good practical application prospect.

The invention discloses a curable antibacterial material, a preparation method thereof, antibacterial ink and application, and relates to the technical field of ink-jet printing. Wherein the amino-modified erythrosine is wide in light absorption range, does not need a light source with a specific wave band, can generate ROS (reactive oxygen species) under the driving of visible light, has broad-spectrum and lasting bactericidal characteristics, and is not easy to cause drug resistance of bacteria; the structural unit derived from the monomer as shown in the formula I has a plurality of double bonds, so that the polymer has higher crosslinking density, and the prepared antibacterial coating has better hardness and durability; besides, the polymer has unsaturated carbon-carbon double bonds, so that the polymer can quickly form a firm coating through ultraviolet light or other curing modes, the treatment time is shortened, and the obtained antibacterial coating is not easy to fall off and can be used for a long time.

The invention relates to the technical field of cathode interface materials, in particular to a non-conjugated connection receptor-receptor type pyrene diimide polymer, a preparation method thereof, a cathode interface material and a semiconductor device. The non-conjugated connection acceptor-acceptor type pyrene diimide polymer comprises a pyrene diimide unit and a conjugated acceptor unit which is in non-conjugated polymerization with pyrene diimide, wherein the conjugated acceptor unit is selected from the pyrene diimide unit or other electron-deficient acceptor units; and the ultraviolet visible light absorption range of other electron-deficient acceptor units is 250nm to 650nm. When being used as a cathode interface material, the non-conjugated connection receptor-receptor pyrene diimide polymer not only has a relatively low LUMO energy level, but also enlarges the ultraviolet visible light absorption range, further widens the light absorption range of a solar cell device, and further improves the short-circuit current density of the solar cell device.

The invention relates to preparation and application of a double-BODIPY-based organic solar cell small molecule donor material. According to the small molecule donor material ZMH-3 and ZMH-4, pentafluorophenyl of an electron withdrawing group is introduced to the meso position, and an electron donating carbazole or triphenylamine (TPA) group is introduced to the 3 and 5 positions by using a Knoevenagel condensation reaction. The two small molecule donor materials have a narrow band energy gap, good solubility and large Stokes shift. The micromolecule donor material provided by the invention has proper energy level and spectral absorption, and can form good absorption complementation and energy level matching with a non-fullerene micromolecule fused ring electron acceptor material ITIC; when the compound is used as an electron donor material of an active layer for preparing an organic solar cell, the cells with the active layers of ZMH-3: ITIC and ZMH-4: ITIC respectively obtain the photoelectric conversion efficiency of 12.26% and 8.23% under optimized conditions, and the compound has potential practical application value and prospect.

The invention discloses a metal halide perovskite material capable of absorbing ultraviolet light, visible light and near-infrared light as well as a preparation method and application of the metal halide perovskite material. The preparation method of the metal halide perovskite material comprises the following steps: adding supramolecules into a solution of a precursor material of metal halide perovskite, and forming a supramolecular hybrid crystal through solution deposition and annealing crystallization induced growth, and further obtaining the metal halide perovskite material with a biphase structure in which the supramolecular hybrid crystal and the perovskite phase coexist. The supramolecules are selected from at least one of crown ether molecules, cyclodextrin, calixarene, calixpyrrole, calixarbazole, cucurbituril and pillararene. The metal halide perovskite material provided by the invention has continuous and wide-spectrum-range light absorption capability from visible light to infrared light, and the prepared photoelectric detector has visible light to infrared light detection performance.

The invention discloses a positioning tool for automobile part machining, which comprises a workbench, supporting legs fixedly connected to the bottom of the workbench, a suction fan arranged at the upper part of the workbench, and a machining assembly arranged at the upper part of the workbench, and the machining assembly comprises a positioning mechanism arranged on the workbench; a sliding mechanism is arranged on the workbench, a collecting mechanism is arranged on one side of a suction fan, a first rectangular column is slidably connected with the workbench through a lead screw, the right end of the lead screw is rotatably connected with a second rectangular column through a bearing, and a first fixing plate is rotatably connected with the first rectangular column through a rotating shaft. The output end of the first air cylinder is fixedly connected with a second rectangular column, and the second rectangular column is slidably connected with the workbench through the first air cylinder. The automobile part machining device solves the problem that an existing device cannot rotate positioned automobile parts, so that the parts can be machined more conveniently.