59 results about "Copper(I) iodide" patented technology

The invention relates to a copper cluster scintillator constructed on the basis of diphenyl-2-pyridine phosphine and cuprous iodide and a preparation method and application of the copper cluster scintillator. The preparation method comprises the following steps: constructing a copper cluster scintillator by using diphenyl-2-pyridine phosphine and cuprous iodide, and preparing the copper cluster scintillator into a semitransparent scintillator film by using polyvinylpyrrolidone as a high-molecular polymer matrix and polyethylene glycol terephthalate as a spin-coating substrate; the scintillator film and a photomultiplier are optically coupled and integrated with nuclear electronics equipment to develop an alpha / beta particle pollution monitor. The copper cluster scintillator provided by the invention has excellent X-ray luminescence performance, and can realize high-sensitivity scintillation response to alpha / beta particles; the surface pollution monitor can realize sensitive detection of alpha / beta particles in the environment, and has important application value in the field of environmental radiation detection.

The invention belongs to the technical field of photocatalytic materials, and relates to a preparation method and application of a copper cluster-phenothiazinyl metal organic framework with visible light catalysis C-N bond cross coupling performance, and the preparation method comprises the following steps: taking 3, 7-bis (4-pyridyl)-10-(4-(4-pyridyl) phenyl) phenothiazine PyPTH as an organic ligand, taking cuprous iodide as a metal salt, and carrying out hydrothermal reaction to obtain the copper cluster-phenothiazinyl metal organic framework with visible light catalysis C-N bond cross coupling performance. The copper cluster-phenothiazinyl metal organic framework Cu4I4-PyPTH is prepared through a solvothermal method, and the synthesis route of the copper cluster-phenothiazinyl metal organic framework Cu4I4-PyPTH is as follows: PyPTH + CuI-Cu4I4-PyPTH; an LED with the wavelength of 405 nm is used as a light source, inert aryl chloride is activated under the mild condition, and Ullmann coupling reaction is achieved. According to the prepared target material Cu4I4-PyPTH, an LED with the wavelength of 405 nm can be used as a light source, inert aryl chloride is activated under the mild condition, light-copper concerted catalysis C-N coupling reaction is achieved, and the good yield and substrate applicability are achieved.

The invention discloses a cuprous iodide-based complex scintillator with a thermally activated delayed fluorescence characteristic as well as a preparation method and application of the cuprous iodide-based complex scintillator. The structural general formula of the complex scintillator is shown in the specification, and L represents a P-containing ligand with a conjugated structure. A series of single crystals are grown by adopting a saturated solution volatilization method, the cost is low, the preparation condition is simple and mild, the environment is friendly, and the obtained cuprous iodide complex scintillator has good scintillation performance and good stability in the single crystal state and the glass state, has an excellent response effect under the X-ray excitation condition, and can be used for preparing the X-ray scintillator. The flexible film prepared by doping and the glassy film prepared by melting and quenching can realize high-resolution dynamic X-ray imaging.

The invention belongs to the technical field of catalyst preparation, and particularly relates to a novel lignin-based copper catalyst and a preparation method and application thereof. The preparation method comprises the following steps: mixing lignin with cyanuric chloride, heating for reaction, and carrying out suction filtration and washing to obtain cyanuric chloride functionalized lignin; mixing the cyanuric chloride functionalized lignin with benzylamine, reacting, and carrying out suction filtration and washing to obtain benzylamine functionalized lignin; and adding the benzylamine functionalized lignin and cuprous iodide into a solvent, reacting, carrying out suction filtration, and washing to obtain the lignin-based copper catalyst. The lignin-based copper catalyst prepared by the method is low in preparation cost, can be recycled, and has the advantages of mild catalytic conditions, high catalytic efficiency and high yield.

The present invention belongs to the technical field of synthesis of special functional inorganic fluorescent materials, and relates to a zero / negative thermal quenching near-infrared photoluminescent material, a preparation method thereof and an application. The material is obtained by a solvothermal reaction of 1,2-bis((2-methyl-1H-imidazol-1-yl)methyl)benzene obtained by reacting imidazole with α,α'-dichloro-o-xylene with cuprous iodide. The luminescence of this material is composed of metal-to-ligand charge transfer (MLCT) and cluster center triplet excited state ( 3 CC). This material (λ ex = 400 nm) exhibits a fluorescence thermal quenching effect at 295K - 385K and a fluorescence negative thermal quenching effect at 385K - 475K, and the fluorescence intensity is very stable in the high-temperature region. Its external quantum efficiency is as high as 22.07%, and it is a rare copper cluster that can emit light in the near-infrared region. It is a new type of high-efficiency OLED photoluminescent material with broad application prospects.

The present disclosure discloses a thermochromic copper iodide organic hybrid luminescent material and a preparation method thereof. The chemical formula of the thermochromic copper iodide organic hybrid luminescent material is Cu4I6C 18 H 30 N4; The preparation method includes the following steps: preparing 4-dimethylamino-1-ethylpyridinium iodide; reacting a methanol solution containing 4-dimethylamino-1-ethylpyridinium iodide with a potassium iodide solution containing cuprous iodide to obtain solid M; centrifuging, washing, and drying solid M to obtain the thermochromic copper iodide organic hybrid luminescent material. Single crystals of the thermochromic copper iodide organic hybrid luminescent material are prepared by the slow diffusion method. The thermochromic copper iodide organic hybrid luminescent material of the present disclosure has the characteristics of high fluorescence quantum yield, high stability, and thermochromism.

The present invention discloses a synthetic method for constructing a new C-C bond by the copper-catalyzed cross-coupling reaction of arylsulfonium salts with arylsilanes. The method uses arylsulfonium salts and arylsilanes as reaction raw materials, arylsulfonium salts as electrophilic reagents, and arylsilanes as nucleophilic reagents to synthesize biaryl compounds under the conditions of a catalyst / ligand / base / solvent. Among them, the catalyst is cuprous iodide, and 1,10-Phen and cesium fluoride are used as additives to achieve the synthesis of biaryl compounds at 70 °C. The reaction of the method of the present invention avoids the use of aryl halides and reduces environmental pollution. In addition, the reaction uses arylsulfonium salts as electrophilic reagents, improving the site selectivity of the reaction. The reaction avoids the use of organometallic reagents, avoiding the toxicity and instability of organometallic reagents. The reaction avoids the use of precious metal catalysts and uses inexpensive cuprous iodide as a metal catalyst, reducing the cost of synthesizing biaryl compounds.

The invention discloses luminous ink for preparing a scintillation layer and a preparation method and application of the luminous ink. The preparation method comprises the steps that cuprous iodide is dissolved in a saturated potassium iodide aqueous solution, hypophosphorous acid is added, and a first mixed solution is obtained; adding the first mixed solution into a polyvinylpyrrolidone solution to obtain a second mixed solution; the preparation method comprises the following steps: dissolving phenyl trimethyl ammonium iodide in a mixed solution of ethanol and acetonitrile to obtain a phenyl trimethyl ammonium iodide solution; quickly mixing a phenyltrimethylammonium iodide solution with the second mixed solution, stirring for a period of time, centrifuging and washing to obtain nano-particles, and dispersing the nano-particles into a solvent; metal copper-based halide nanoparticles are prepared at room temperature by using a single-component solution method, and then the metal copper-based halide nanoparticles are dispersed into a solvent to obtain the luminous ink. And then the luminous ink is uniformly sprayed on a selected substrate, and the thickness and the area can be freely adjusted according to requirements, so that a high-resolution scintillation layer is prepared.

The invention provides a nitrogen-defect g-C3N4 / CsCu2I3 composite material as well as a preparation method and application thereof, and belongs to the technical field of preparation of nano heterogeneous materials. A preparation method of a nitrogen-defect g-C3N4 / CsCu2I3 composite material comprises the following steps: dissolving cesium iodide and cuprous iodide in anhydrous acetonitrile, and carrying out a stirring reaction at 50-70 DEG C for 4-6 h to obtain a CsCu2I3 precursor solution; adding g-C3N4 into the CsCu2I3 precursor solution, and reacting for 10-14 hours at the temperature of 50-70 DEG C to obtain a crystallization solution; and dropwise adding diethyl ether into the crystallization solution, carrying out anti-solvent crystallization, aging, washing and drying to obtain the nitrogen-defect g-C3N4 / CsCu2I3 composite material. The nitrogen-containing defect rod-like g-C3N4 / CsCu2I3 binary nano heterojunction with good gas sensitive performance is prepared by the method disclosed by the invention.

The invention provides a solar cell based on a Cu-doped lead-copper alloy perovskite light absorption layer and a preparation method of the solar cell, and the light absorption layer of the solar cell is a Cu-doped lead-copper alloy perovskite thin film Cs0. 05MA 0. 10FA 0. 85Pb1-xCuxI3, the preparation method of the lead-copper alloy perovskite thin film comprises the following steps: adding formamidine hydriodate, methylamine hydriodate, cesium iodide, lead iodide and cuprous iodide powder into a solvent, and uniformly stirring and mixing to prepare a perovskite precursor solution; the PbI2 powder and the CuI powder are uniformly mixed, the uniformly mixed precursor solution is spin-coated, annealing is carried out on a heating stage, the thin film is obtained, the ratio of the PbI2 powder to the CuI powder is 1-x: x, and x is equal to 0-10%. The copper-doped lead-copper alloy perovskite with the three-dimensional octahedral structure synthesized by the method has structural and thermodynamic stability and is high in fluorescence performance and light absorption performance, and the crystallization quality of a thin film is remarkably improved; when the perovskite thin film is used as a light absorption layer of the cell, a perovskite solar cell with high photoelectric conversion efficiency can be prepared, and the perovskite solar cell has excellent ultraviolet resistance and high temperature resistance stability.

The present application relates to the technical field of drug synthesis, and in particular to a synthesis method of racemic 2,6-dimethyl-2,3-dihydro-1H-inden-1-amine, which introduces amino through a conjugate addition reaction and a nucleophilic substitution reaction under the catalysis of cuprous iodide and other copper reagents by using N-acetyl-N-1-propenylacetamide and 2-fluoro-1,4-dimethylbenzene, and then hydrolyzes under alkaline conditions to obtain the racemic 2,6-dimethyl-2,3-dihydro-1H-inden-1-amine conveniently; the present application provides a more efficient, safe and economic solution for related synthesis reactions, has a wide application prospect, provides a new idea and method for the synthesis of such compounds, and improves the synthesis efficiency and quality of drugs.

The present invention discloses a method for preparing a Cs3Cu2I5:Tl scintillator film by ultrasonic spraying assisted by a monomer additive. The method comprises dissolving cuprous iodide, cesium iodide, thallium iodide or thallium chloride, hypophosphorous acid and a monomer additive in DMF in proportion to form a precursor solution, then uniformly ultrasonically spraying the precursor solution on a glass substrate heated at 120-150°C, and finally annealing the wet film together with the glass substrate at 120-150°C to obtain Tl + A 0.15% doping Cs3Cu2I5:Tl scintillator film was produced using ultrasonic spraying and the addition of a monomer additive to the precursor solution. This method produces a dense, uniform, and specifically oriented Cs3Cu2I5:Tl scintillator film with a thickness exceeding 100 μm. The film also exhibits significantly enhanced adhesion and good air stability.

The invention discloses a synthesis method of a seven-membered spiro oxoindole compound, and belongs to the technical field of organic synthesis. According to the invention, a key continuous quaternary carbon and tertiary carbon three-dimensional center in an oxindole molecule is constructed in one step based on coordination induction of chiral sulfinamide as a prothetic group and metal copper and catalysis of a Michael addition cyclization reaction of amide alpha-position arylation tandem ketene ester by cuprous iodide; the preparation method comprises the following steps: preparing a seven-membered spiro-oxoindole compound, removing tert-butylsulfinyl through a subsequent acidic condition, carrying out a series condensation cyclization reaction to prepare an amino-protected seven-membered spiro-oxoindole compound, and further removing 4-methoxy benzyl protection of nitrogen atoms on an oxoindole ring to obtain the key seven-membered spiro-oxoindole compound. The compound has obvious biological activity on human lung cancer cells A549 and H1299, and the IC50 (half maximal inhibitory concentration) of the compound is 18.73 mu M / L and 15.81 mu M / L respectively. The preparation method provided by the invention is mild in reaction condition and low in energy consumption, and adopts cheap metal cuprous iodide as a catalyst; the method also has the characteristics of better atom economy and high product yield; the method has the advantages of short synthetic route and simple reaction operation process, and can be widely popularized and applied.

This invention discloses a one-dimensional copper-iodine-based hybrid perovskite semiconductor material synthesized from imidazole, cuprous iodide, sodium phosphate, and hydroiodic acid using a solution-cooled crystallization method. The chemical formula is (C3H5N2)3CuI6. The preparation method includes the following steps: Step 1, weighing raw materials: weigh imidazole and cuprous iodide; Step 2, mixing raw materials: place imidazole and cuprous iodide in a glass bottle, add sodium phosphate and hydroiodic acid; Step 3, heating and stirring: heat and stir until dissolved; Step 4, cooling and crystallizing: place in situ and cool; Step 5, preliminary identification of the product: irradiate the crystal with an ultraviolet lamp and observe the color of the reflected light; Step 6, filtration and drying: filter and dry the crystal to obtain the product. This invention is simple and, by introducing cuprous iodide, achieves strong exciton recombination and efficient self-trapped exciton emission, exhibiting good photoelectric conversion performance, thus replacing lead-based hybrid perovskite materials to a certain extent.

This application discloses a warm white light monomer material and its preparation method, comprising the steps of: mixing cuprous iodide and tributylmethylammonium iodide, dissolving them in a polar solvent to obtain a precursor solution, and using the precursor solution to prepare the warm white light monomer material. This invention uses copper halides and optimizes the composition of organic molecules to prepare a high-efficiency warm white light monomer material that meets the requirements of healthy lighting. The warm white light monomer material is free of rare earth doping and consists of a single component; its fluorescence quantum yield can reach 100%, and it has good stability; it has a low color temperature and a high color rendering index, is environmentally friendly and eye-friendly; the preparation method is simple and easy to implement, has good film-forming performance, is conducive to the preparation of large-area light-emitting devices, and has the potential for low-cost, large-scale production.

The invention provides a cuprous iodide cluster single crystal material as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The cuprous iodide cluster single crystal material disclosed by the invention has a structural general formula shown in the specification. The preparation method comprises the following steps: mixing CuI, a diphenylphosphine quinoline ligand and an organic solvent to form a clear and transparent solution, and crystallizing through a room temperature volatilization method to obtain the cuprous iodide cluster single crystal material. Carrier transport is balanced and skeleton rigidity is enhanced by introducing carbazole, 3, 6-tert-butyl carbazole, phenoxazine and 9, 9-dimethyl acridine groups, exciton quenching is inhibited while an orange-red photoluminescence blank is filled, and a key material support is provided for constructing a high-performance solution processing type OLED (Organic Light Emitting Diode).

The invention provides a preparation method of a large-size CuInS2 quantum dot. The invention belongs to the field of semiconductor luminescent nano materials, and provides a novel synthesis method for obtaining a CuInS2 quantum dot material with the size of 9.16 nm, the photoluminescence peak position of 1120 nm and the electroluminescence peak position of 1045 nm. The n-dodecanethiol is used as a sulfur source, the cuprous iodide is used as a copper source, the indium acetate is used as an indium source, the operation is convenient, the large-size near-infrared stable luminous CuInS2 material can be obtained through one-time heating, and the material has the advantages of wide spectrum and low toxicity. The large-size CuInS2 semiconductor quantum dot material prepared by the preparation method disclosed by the invention can obtain near-infrared luminescence under the excitation of ultraviolet wavelength. The synthesis process is simple, and stable quantum dots can be obtained without further modification treatment.

The invention relates to the technical field of semiconductor light-emitting devices, and discloses a preparation method of a high-color-purity blue light LED, which comprises the following steps of: mixing cesium iodide and cuprous iodide and reacting to prepare a Cs3Cu2I5 nuclear material; the Cs3Cu2I5 core material is placed in a shell layer precursor solution containing a gallium source to be wrapped and then annealed, and core-shell structure fluorescent powder is obtained; preparing the fluorescent powder with the core-shell structure into slurry, coating a base material with the slurry layer by layer, and performing high-temperature treatment to form a fluorescent material film with Ga concentration gradient; and integrating an ultraviolet LED chip with the fluorescent material film to prepare the high-color-purity blue light LED. According to the invention, the core-shell passivation structure and the concentration gradient film are constructed, and the functionalized packaging resin is matched, so that the quantum yield, the color purity, the light extraction efficiency and the long-term working stability of the blue light LED are improved.

This invention discloses a dual-site heterovalent metal MOF material for NO adsorption, its preparation method, and its application, belonging to the field of gas adsorption materials. The chemical formula of this material is [Cu]. Ⅰ (Cu Ⅱ )4(2-TPY)2(IA ‑ )3(NO3 ‑ )2I ‑ O 2‑ ]·(NO3 ‑ The material was prepared by a solvothermal method using the reaction of bis(terpyridine), isonicotinic acid, and cuprous iodide. This material possesses a three-dimensional structure and Cu... Ⅰ / Cu Ⅱ The bimetallic active sites exhibit excellent thermal stability, high specific surface area, and highly selective adsorption capacity for NO. This invention solves the problems of low NO adsorption capacity and poor selectivity of traditional adsorbents in complex flue gas, and can efficiently achieve NO / CO separation. It is suitable for the deep removal and resource utilization of NO in industrial waste gas, and has good cycle stability and application prospects.

The application discloses a kind of probe with terpyridine as recognition group and containing three electron donors and a preparation method and application thereof.The para position of the three pyridine nitrogens of the compound simultaneously contains a carbazole, 3,6-di-tert-butyl carbazole, diphenylamine, 4,4'-dimethoxytriphenylamine or 10-phenylphenothiazine electron donor;In the preparation method, with tris(dibenzylideneacetone) dipalladium, palladium catalyst such as tetra(triphenylphosphine) palladium or cuprous iodide as catalyst, with 4,4',4"-tribromo-2,2':6',2"-terpyridine or 4,4"-dibromo-[2,2':6',2"-terpyridine]-4'-yl trifluoromethanesulfonate as intermediate, the probe is prepared.The application realizes rapid visual sensitive detection of copper ions.

The invention relates to a cuprous iodide organic-inorganic hybrid material. The cuprous iodide organic-inorganic hybrid material is a compound synthesized by taking methylpyridinium functionalized benzothiadiazole LS I or methylpyridinium functionalized benzoselenadiazole LSe I as a basic ligand and CuI. According to the cuprous iodide organic-inorganic hybrid material disclosed by the invention, a cationic charge center is introduced on the premise of maintaining the coordination capability of a ligand, so that the band gap of the hybrid material is remarkably narrowed, long-wavelength near-infrared (gt; 900 nm) luminescence is realized, and meanwhile, the vibration of molecules is remarkably reduced and the quantum yield is improved by virtue of a special interaction form between organic and inorganic components.

A Cu(I)-MOF coordination compound SUST-WZ3 that achieves ultra-long near-infrared room temperature phosphorescence and a preparation method thereof, wherein the molecular formula of the functionalized metal-organic framework compound is C 48 H 28 Cu4N 16 The coordination compound is self-assembled by hydrothermal reaction using 1,4-bis(4-(1H-tetrazolyl-5-yl)phenyl)naphthalene (H2DTzDphNap, hereinafter referred to as Tz-Nap) as an organic ligand and cuprous iodide as a metal salt. The coordination compound SUST-WZ3 exhibits metal-ligand charge transfer transition (MLCT) emission in the 450-505 nm range (1.07, 2.29, and 5.38 μs at 450, 475, and 505 nm, respectively), triplet emission at 705 nm, and a lifetime of 1.85 ms at 300 K and 25.16 ms at 77 K. White light can be obtained by adjusting the relative intensities of the doublets. Furthermore, under low-temperature conditions, the near-infrared (NIR) long-persistence luminescence (LPL) of SUST-WZ3 can be observed with the naked eye.

The invention discloses a preparation method of a cuprous iodide transparent conductive film. The preparation method comprises the following steps: taking silicon and quartz glass as substrates, and obtaining a copper-zinc alloy film on the surfaces of the substrates through a magnetron sputtering method; the alloy film prepared through the method is high in continuity, compactness and smoothness, and a cuprous iodide film with low surface roughness can be obtained after iodination is conducted. The zinc element in the copper-zinc alloy inhibits the growth of cuprous iodide grains in the iodination process. Compared with a cuprous iodide film not doped with zinc, the prepared CuI: Zn film has the advantages of being continuous and compact, high in surface brightness, weak in light diffusion, high in conductivity and the like. The method is simple and low in cost, and industrial production can be realized.

The present invention discloses a GO-TAPP microporous composite material and a preparation method and application thereof, belonging to the field of biomedical technology. 5,10,15,20-tetrakis(4-ethynylphenyl)-porphyrin, bis(triphenylphosphine)palladium chloride and cuprous iodide are added to tetrahydrofuran and mixed evenly in the dark, graphene oxide and triethylamine are added, mixed in the dark, and then reacted, and a black solid is obtained after the reaction is completed, and the GO-TAPP microporous composite material is obtained after washing and drying. The GO-TAPP microporous composite material with graphene oxide and porphyrin as structural units of the present invention can be synergistically antibacterial through PTT and PDT, and has good biocompatibility, no toxic side effects, and a hemolysis rate of less than 2% for cells. GO-TAPP is in sheet form and can be directly cut and applied for direct use without post-processing, thereby improving its application prospects.

The invention relates to the technical field of preparation of quinazolinone derivatives. The invention provides a method for preparing a quinazolinone derivative, which comprises the following steps of: adding a compound with a general formula 1, benzisoxazole, 2, 3-dichloro-5, 6-dicyanobenzoquinone and cuprous iodide into 1, 2-dichloroethane to react, and the chemical equation of the reaction is shown in the specification; wherein R is hydrogen, methyl, ethyl or methoxyl. The method provided by the invention takes copper as a catalyst, and has the characteristics of high stereoselectivity and single product geometric configuration. The copper catalyst is cheap and low in toxicity, and meets green chemical requirements; reaction conditions are mild, and industrial amplification is easy; meanwhile, by-products are few, and atom economy is good.

The application provides a novel hybrid cuprous iodide light-emitting material and a preparation method and fluorescent application thereof, and particularly relates to two light-emitting materials, and both are organic-inorganic hybrids of organic ligands and inorganic cuprous iodide clusters, wherein Cu4I4(C9H 12 N3)2 is a two-dimensional double-layer network structure, the optimal excitation wavelength is 367 nm, and the strongest emission peak is at 602 nm; and Cu2I2(BrC 11 H8N) is a one-dimensional chain structure of ladder-shaped grid structure, the optimal excitation wavelength is 419 nm, and the strongest emission peak is at 521 nm. The light-emitting material is prepared through a diffusion process. The light-emitting material has good fluorescent emission performance, is a novel fluorescent crystal material with potential application value, and can be applied to the fields of solid-state lighting, light-emitting diodes, lasers and fluorescent powder.

The invention belongs to the technical field of luminescent materials, and particularly relates to a preparation method of a hybrid red luminescent material based on cuprous iodide. The material is prepared by reacting CuI with an organic ligand 2-ethyl-3-methylpyrazine through a solution method, and the chemical composition of the material is CuI (2-et-3-mepz). The preparation method comprises the following steps: respectively dissolving CuI and 2-et-3-mepz in an organic solvent, mixing and reacting, stirring, centrifuging, washing and drying to obtain the red luminescent powder. The material can be effectively excited in the wave band from ultraviolet light to green light, red light with the peak wavelength being 628 nm is emitted, the CIE color coordinate is about (0.63 and 0.37) and is close to the NTSC red standard, rare earth elements are not contained, the preparation technology is simple, cost is low, and environment friendliness is achieved. In the process of preparing a white light LED device with a high color rendering index, white light with the color rendering index as high as 93.0 can be obtained by mixing the fluorescent powder with blue and green fluorescent powder for use, and the fluorescent powder has a wide application prospect in the field of solid-state illumination.

The invention discloses a preparation method of copper-based halide luminous ink and application of the copper-based halide luminous ink in the anti-counterfeiting field, and belongs to the technical field of luminous materials. The method comprises the following steps: synthesizing an organic ligand (buted) Br, reacting the organic ligand (buted) Br with cuprous iodide in a saturated potassium iodide solution to generate Cu6I8 (buted) 2 powder, and carrying out ball milling on the Cu6I8 (buted) 2 powder and a polyvinylpyrrolidone ethanol solution to prepare the luminous ink. The ink is white under natural light, emits green-yellow light under ultraviolet light, has a solvochromic characteristic, turns orange-yellow after being in contact with dichloromethane, and can reversibly recover through a potassium iodide solution. The method is simple in process, low in cost, high in yield, environment-friendly, suitable for the fields of high-end anti-counterfeiting, information encryption, intelligent packaging and the like, and good in commercialization prospect.

The invention belongs to the field of new materials, and relates to a novel functional material, in particular to a copper cluster material and a preparation method and application thereof. The copper cluster material can be prepared through a one-step reduction strategy, namely, the copper cluster material is prepared by reducing a mixture of imidazolium salt and cuprous iodide under a strong alkali condition, the copper cluster material is abbreviated as Cu2I2 (NHCPy1) 2, and the structure of the copper cluster material comprises a Cu2I2 core and two protective ligands on the periphery. The copper cluster material has green luminescence at room temperature, the quantum yield can reach 80% or above, and the copper cluster material has good thermal stability and film-forming performance. The luminescence of the copper cluster is mainly derived from electron transition from a metal core to a peripheral ligand, and the good stability of the copper cluster is derived from the strong coordination effect of carbene and the favorable accumulation mode of the cluster. The copper cluster material is used for 3D printing ink, and good green fluorescence is reserved. In short, the composite material is low in cost, easy to obtain, high in stability and good in processability, and can be used for green luminous 3D printing ink.

The invention discloses a preparation method of a purple fluorescent material. The preparation method comprises the following steps: firstly, putting a metal target material and a material growth substrate into a magnetron sputtering system; the magnetron sputtering system is vacuumized; argon is input into a sputtering system, and the pressure of the sputtering system is increased by regulating and controlling a valve control device; then, direct-current voltage is applied to the metal target material, magnetron sputtering is carried out, and an alloy film is obtained on the substrate; and adding an iodine source into the alloy film to obtain the aluminum-doped cuprous iodide. The aluminum element is uniformly distributed in the copper film by a magnetron sputtering method to form the copper alloy film containing aluminum. The aluminum element is introduced into the cuprous iodide thin film, so that the growth of cuprous iodide crystal grains is promoted, and the phase change of cuprous iodide is also caused. The fluorescent material reacts with iodine through metal at room temperature, the method is simple, the requirement on experimental conditions is low, and the cost is low.