TW201026907A - Manufacturing method of monolayer metal nanoparticle thin film - Google Patents

Abstract

A manufacturing method of monolayer metal nanoparticle thin film, including the following steps: providing a substrate modified by silane coupling based molecules, then preparing a metal electrolytic solution, the metal electrolytic solution containing a metal compound component and a surfactant component, finally immersing the modified substrate in the metal electrolytic solution, and depositing a metal particle thin film on the substrate by way of electro-chemical deposition. The metal compound component in the metal electrolytic solution can be reduced to metal nanoparticles, the surfactant component can form a molecule film over the metal nanoparticles so as to effectively preventing the metal nanoparticles from agglutination, and by means of the covalent adsorption effect between the silane coupling based molecules on the substrate and the metal nanoparticles, a monolayer and highly integrated metal nanoparticle thin film is self-assembled on the substrate.

Description

201026907 VI. Description of the Invention: [Technical Field] The present invention relates to a method for preparing a nanoparticle film, and more particularly to a method for producing a highly dense single-layer metal nanoparticle film. [Prior Art] In recent years, due to the shortage of inorganic materials such as germanium, the development of many technology deer has been limited. Therefore, the development of organic materials has become more active, but the effectiveness of organic materials is still far less than that of inorganic materials. Therefore, inorganic materials and organic materials The use of materials and gentlemen's applications has become the most popular research. In addition, actively looking for other alternative inorganic materials with better application performance is also worth researching. Among the inorganic materials, gold (Au) is the most popular, and because of its chemical and physical properties, it is not biologically toxic. Therefore, it has always been a research subject of interest to scientists. Early studies have focused on the properties of gold in aqueous solutions. In recent years, because of the special optical properties found after the gold particles have been made into Jinnai Greens, the results of such research have sprung up in large numbers. However, 'except for the thin particles of Jinnai, other The nanoparticle film produced by the type of metal can also produce special optical and material properties through its nanometer size characteristics and increase the convenience of application by forming a solid film. Referring to FIG. 1', the following is a method for preparing a gold nanoparticle film, which comprises the following steps: Step 101 is to provide a cleaned substrate; (4) 102 is to provide a four-gas gold acid aqueous solution, and through a specific processing procedure The tetrachloro (tetra) water material is made into - Chennai Yuzi water miscellaneous, usually 3 201026907. The processing procedure of the two methods is the water phase synthesis method or the phase transfer method, and the rows are respectively as follows: (4) H New Zealand: The method comprises the steps of: forming a mixture liquid that has been heated to a predetermined temperature, and adding a liquid mixture to a predetermined temperature, and continuously mixing the mixture for a period of time at a constant temperature, and then mixing the mixture. The liquid is cooled in an environment of 2〇C~3Gt, and the aqueous solution of the gold nanoparticle is prepared. The reducing agent in the reducing agent solution is a substance selected from the group consisting of citric acid, tannic acid, Dehydrogenation, quaternary money salt, and trisodium citrate bismuth (2) phase transfer method. The method is to dissolve tetrachloroauric acid in water, and dissolve the tetra-alkaline salt and the n-dodecyl-sulfur In the toluene solution, the above two solutions are mixed and mixed with β 'Adding a hydrogen halide to the gold ion of the four-gas gold acid solution t to be reduced to a gold atom, and then depositing as a gold nanoparticle and forming an aqueous solution of the gold nanoparticle, at this time, the sulfur of the organic phase towel The alcohol will (10) on the surface of the formed gold nanoparticles to stabilize the nanoparticles, avoiding their aggregation and limiting their particle size. Step 103: immersing the substrate in the prepared gold nanoparticle water-soluble mash liquid and determining the immersion time by the adsorption force between the substrate and the gold nanoparticles, and finally obtaining the gold nanoparticles Deposited on the substrate and formed a film of gold nanoparticles. Although the existing method for preparing the gold nanoparticle film has the characteristics of producing a gold thin film material on the substrate, there are actually the following defects: 1. When preparing the gold nanoparticle film by the existing method, it is necessary to first After the aqueous solution of gold nanoparticles is prepared by aqueous phase synthesis or phase transfer method, the substrate is immersed in 201026907 into the prepared metal nanoparticle solution, and the gold nanoparticles are deposited on the substrate to form the Chennai green seed. The process of preparing the gold nanoparticle=solution of the film, the towel thereof is complicated and time consuming, and the method for preparing the conventional metal nanoparticle film has many disadvantages of being complicated and complicated to manufacture. Second, because the general interaction between the gold nanoparticles and the substrate is not strong, and it is impossible to form a high-density metal nanoparticle film on the substrate, when the density of the metal nanoparticles on the substrate is not high, The catalytic properties are not good, and the reduction of the effect is that the existing metal nanoparticle film has a disadvantage that it is difficult to produce a high-density metal nanoparticle film. Eight or three, because the nanoparticles are prone to self-aggregation (aggregati〇n), in order to avoid this, it is common to add sodium citrate or thiol to the metal nanoparticle solution. The protective agent covers the nano particles, so that the particles are dispersed and not easy to aggregate. The protective agent having such a function has a large force on the particles, and therefore, after depositing a metal film of the metal particles, It is relatively difficult to remove the surface protective properties of these metal nanoparticles to affect the properties and applicability of the metal nanoparticle film. 4. The metal nanoparticle film produced by the existing method is easy to form. '(4), and the multilayer metal nanoparticle film tends to form agglomerated and messy 'arrangement, which also affects the photoelectric properties of the metal nanoparticle film' and reduces its applicability. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a single layer metal of a single layer and high density metal nanoparticle film directly on a substrate by an electrochemical deposition method which is relatively simple and inexpensive. Nanoparticle film 5 201026907 method. Therefore, the method for preparing the single-layer metal nanoparticle film of the present invention comprises the following steps: (1) providing a substrate modified with a decane-coupled molecule; (ii) preparing a metal electrolyte, the metal electrolyte comprising a predetermined ratio* a metal compound component having a plurality of metal compounds respectively combined with a predetermined metal ion; and (iii) directly immersing the modified substrate in the metal electrolyte And electrochemically depositing the metal ions in the metal compound component to be reduced. It is a metal nanoparticle' and depositing a thin film of a metal nanoparticle on the substrate. The invention has the beneficial effects that the metal nanoparticle film can be formed by directly immersing the substrate in the metal electrolyte solution by electrochemical deposition, and can be directly used by the surfactant in the metal electrolyte solution. a metal film formed on the surface of the metal nanoparticles formed by the reduction of the metal ions to effectively prevent mutual aggregation, and a substrate modified with a decane-coupled molecule, such metal nanoparticles and the same A stable covalent bond is formed between the coupled molecules, and a metal particle having a larger particle diameter is formed by reducing the bonding between the metal particles and the metal particles, thereby making the particle size smaller and the density smaller. The high-strength metal nanoparticle film enables the present invention to produce a single-layer and high-density metal nanoparticle film by a relatively simple and low-cost electrochemical deposition method, so that the prepared metal nanoparticle film can be relatively more stable. Good application performance, and the value of commercial applications. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to Figures 2 and 3, a preferred embodiment of the process for producing a single-layered metal nanoparticle film of the present invention comprises the following steps: Step 201 is to provide a substrate 31 modified with a decane-coupled molecule. Wherein one end of the decane-coupled molecule has a group selected from the group consisting of a thiol group (-SH) and an amino group (-NH3). In order to deposit a metal nanoparticle film having a higher density and a smaller particle diameter after deposition on the substrate, it is preferred to use a decane-coupled molecule having a thiol group, and in the preferred embodiment, a sulfur-alcohol group is used. Propyltrimethoxysilane (MPTMS) is used as the astaxantane (see below: och3 hs, /\^uoch3 0ch3)

The substrate 31 is made of a substrate having a conductive property. In this embodiment, the substrate has a conductive film made of a material selected from the group consisting of tin-doped indium oxide. , abbreviated as ITO), indium-doped zinc oxide (abbreviated as IZO), aluminum-doped zinc oxide (abbreviated as AZO), and gallium-doped zinc oxide (GZO) ). 7 201026907 The substrate 31 must be subjected to a cleaning treatment and a removal of the oxide layer before the modification. The substrate is exposed to a hydroxyl group end (·_, so that the substrate can be smoothly hydrolyzed by the sulfonate-coupled molecule. 202 is a preparation-metal electrolyte 3〇, the metal electrolyte% comprises a metal compound component and a surfactant component mixed in a predetermined ratio, and a plurality of the metal compound components are respectively combined with a predetermined metal ion a metal compound, wherein the metal ions in the metal compound component are formed from a metal selected from the group consisting of: a group of gold, silver, copper, nails, ornaments, iron, and . In the preferred embodiment, the metal ions are substantially gold ions, and the metal compounds in the metal compound component are four gas gold acids (H(AuC14)). Step 203 is: directly immersing the modified substrate 31 into the metal electrolyte 30, and electrochemically depositing the gold eyebrow ions in the metal compound component to be reduced to metal natrix, and on the substrate 31. Deposition to form a thin film of metal nanoparticles. Preferably, the electrochemical deposition method uses a three-electrode system 4〇 formed by a working electrode 41, an auxiliary electrode 42 and a reference electrode 43, and the working electrode 41 is The substrate 31 to which the (four) courtyard-coupled molecule has been modified is connected to the auxiliary electrode 42 as a platinum wire, and the reference electrode 43 is silver/vaporized silver (Ag/AgCl). Thereby, the metal ions in the metal electrolyte solution 3 are reduced to gold > 1 atom, and then covalently bonded to the (d) coupling type molecule on the substrate 31 to deposit the metal on the substrate 31. Nanoparticle film. In this embodiment, 'the gold in the tetra-gas gold acid in the metal electrolyte 3Q is reduced from 201026907 to the gold nanoparticle, and then re-bonded to the decane-coupled molecule on the substrate 31. The metal nanoparticle film is formed. Preferably, the surfactant in step 203 acts as an electrolyte and can utilize the negatively charged environment of its hydrophilic end to achieve the effect of attracting metal ions. In addition to helping to conduct electricity, surfactants can also act as stabilizers to prevent metal particles from agglomerating, and have the function of a conductive agent and a stabilizer. Therefore, by the adsorption of the surfactant on the solid surface, it is possible to form a molecular film on the surface of the reduced metal nanoparticles, thereby preventing the particles from coming into contact with each other and preventing aggregation. Preferably, the surfactant is an anionic surfactant, so that by virtue of its hydrophilicity, it can be removed by water rinsing after the reaction is completed, so as to prevent the residual surfactant from ringing. The properties of metal nanoparticle films. In addition, anionic surfactants have biodegradable properties that best meet the needs of modern environmental protection. In this embodiment, dodecylbenzenesulfonic acid (DBSA) is used as a surfactant. Wherein, the chemical formula of DBSA is as follows: /-\ 0 CH3(CH2)12-<Tj>-|--〇eNa@. Step 204: forming the metal nanoparticle film on the substrate 31 and then deionizing the ionized water The deposited substrate is carefully washed and dried with air. It is worth noting that when the metal electrolyte 3 配制 prepared in this embodiment is electrolytic (4) containing gold ions, a gold nanoparticle film is formed on the substrate 31 'MpTMS is modified in step 2 () 1 The substrate 31 mainly 201026907 is capable of forming a stable Au-S covalent bond with the gold nanoparticles by its SH base end, since the binding energy of the Au-S bond is quite strong and is higher than Au-Au. The bond of the bond is stronger, so that Au tends to bond with SH, and many gold particle nuclei are formed, instead of the Au and Au bond aggregates and grow into gold particles of larger particle size. Therefore, the strong bond between the MPTMS and the gold nanoparticles can be used to reduce the Au and Au bond aggregation to integrate the larger particle size of the gold particles, and the substrate 31 modified with the MPTMS can be electrochemically coupled with the metal electrolyte 30. At the time of deposition, a film of gold nanoparticles having a high density and a small particle size can be deposited on the substrate 31. <Specific Example> In order to facilitate the subsequent electrochemical deposition, a substrate having a conductive property is selected, and a conductive substrate commonly used in the market currently has a transparent conductive oxide (TCO) thin film. For example, ITO, IZO, AZO, GZO, and various metal sheets such as gold (Au), platinum (Pt), and the like. The following is a specific example of depositing a film of a layer of gold nanoparticles on an ITO substrate. (1) Cleaning of the substrate The substrate is first cut to a size of 1 x 4 cm. The mixture was washed in a different solvent in the order of acetone-soap-deionized water, and ultrasonically shaken for 20 minutes in each solvent. (2). Modification of organic molecule MPTMS (modified)

The cleaned substrate was immersed in a supersaturated sodium hydroxide (NaOH) solution for 30 minutes, carefully rinsed thoroughly with deionized water and blown dry with nitrogen (N2). This step is to remove the oxide layer on the substrate and expose the substrate to the OH 201026907 end. This allows the substrate to react with sulfene-coupled molecules such as MPTMS to form a sol-gel reaction to form Si-O-Si. The stable covalent bond allows the MPTMS to be firmly bonded to the substrate surface. Alternatively, the oxide layer on the substrate can be removed by plasma or by immersion in a piranha solution. The above piranha clean is a mixture of H2S〇4 and Η2〇2, mainly by the strong oxidizing property of h2so4 to destroy the hydrocarbon bond in the organic matter, and the sulfuric acid can cause the organic matter to be dehydrated and carbonized, and the hydrogen peroxide Φ The carbonized product can be oxidized to carbon monoxide or carbon dioxide gas. Next, the substrate was placed in a 1 mM solution of MPTMS in ethanol (99.5%), and immersed at room temperature for one hour. The soaked substrate was washed with an ethanol solution (99.5%) and placed in an oven at 80 ° C for 2 hours. (3) Preparation of gold electrolyte In order to deposit the gold nanoparticles on the substrate, the dispersibility is good, so that the surfactant is used as a protective agent. Here, an anionic boundary surfactant DBSA was used for the experiment. Weigh 0.0042 g (1.2Xl (T6 mol) of DBSA into 10ml of 18M. Ω ultrapure water. Also add 0.2ml of 2xl0_4 HA HAuCU solution to the prepared DBSA solution, and use ultrasonic vibration to evenly mix. (4) The deposition of gold particle film is shown in Figure 3. Electrochemical deposition is performed by a three-electrode system. The working electrode is an ITO substrate with modified MPTMS, the auxiliary electrode is white gold wire, and the reference electrode is Ag/AgCl. 11 201026907 The immersed substrate is immersed in the prepared gold nanoparticle solution, and the adsorption force between the substrate and the gold nanoparticle is determined by the soaking time end to determine the adsorption force between the substrate and the gold nanoparticle. The modification of the substrate is modified by the molecule of the decane coupling group as mentioned above, and the other portion of the decane coupling group may be a molecule such as SH or NH3, which can change the force between the substrate and the gold nanoparticles. According to the literature, due to the application of positive or negative voltages, HAuCU can form gold nanoparticles, but the crystal structure of the particles is different (such as dodecahedron or icosahedron), in order to prevent Excessive voltage is applied to dissociate the water (the dissociation potential of water is about ± e 8 eV). Therefore, in this specific example, the potential of _ 〇 7 eV is applied to the electrolytic solution containing gold ions for electrochemical deposition. Immediately after deposition, the deposited substrate was carefully washed with deionized water and dried with nitrogen (N2). Referring to Figure 4, the metal nanoparticle film prepared by the above method was diffused by a monthly t* spectrometer (Energy dispersive) Spectrometer) The EDS diagram obtained by the inspection, from the display results and data of the graph, the method of the invention is used, when the MPTMS-modified substrate is immersed in a gold electrolyte containing gold ions, the electrochemical deposition system is used. The metal in the metal nanoparticle film deposited on the substrate is gold. As shown in Fig. 5(b), an SEM image obtained by electrochemical deposition of gold on a substrate modified with MpTMS is shown to be deposited thereon. The gold nanoparticles are deposited on the substrate in a small particle size and high density state. <Substrates modified with different decane coupling molecules and unmodified 12 201026907 substrates, respectively Prepared nanoparticles deposited metal nanoparticle thin film >

Prepare five modified or unmodified ITO substrates, which are divided into A substrate, B substrate, C substrate, D substrate, E substrate, and then perform gold nanoparticle deposition as a specific example with these five substrates, respectively. Forming a gold nanoparticle film on the substrates, and observing the formed film morphology by a scanning electron microscope, wherein the A substrate to the D substrate are substrates modified with four different decane coupling molecules, respectively, and the E substrate An unmodified ITO substrate, and the A substrate is a substrate modified by APTES ((amino)triethoxysilane), and the B _ substrate is

MPTMS ((3-mercaptopropyl) trimethoxysilane) modified substrate, C substrate is GPTS ((3-glycidoxyproplymethoxy silane)) modified substrate, and D substrate is (Trimethoxysilyl) benzene modified substrate, these four decane coupling molecules The chemical structure is as follows: h3c

3-GtycidoxypropyltnmelboxysilaBe (GPTS)

(3-ΑηΙ·ορΓ〇ρ^〇ΐΓΪ^^οχγ5〇Μβ (APTES) OCH3 OCH3 /〒'och3 och3

Si-OCH I OCH3 3 (bim^flioxysilyQbaizenc

(3-MercaptopiOpyi)tiimeti»oxysflaBC

13 201026907 According to the above chemical structural formula, it can be seen that the groups at one end of the decane-coupled molecules on the A, B, C, and D substrates are amino (-NH2), thiol (-SH), and ring, respectively. Oxy ("V), phenyl (Ό). SEM, wherein the SEM images of the gold nanoparticle film deposited on the A substrate, the B substrate, the C substrate, and the D substrate are as shown in (a), (b), (c), and (d) of FIG. 5, respectively, and the E substrate. The SEM image of the deposited gold nanoparticle film is shown in Fig. 6. As shown in the figure, the unmodified E substrate is compared with the A substrate to the D substrate modified by the decane coupling molecule. The gold film obtained by deposition is not a dispersed gold particle but a coalescence, which shows that the A substrate to the D substrate modified by the organic molecule does affect the deposition type of the gold nanoparticle, and therefore, the decane coupling The molecularly modified substrate allows the gold nanoparticles deposited thereon to be distributed in a dispersed state. Further comparing (a), (b), (c), and (d) of FIG. 5, respectively, it was found that the B substrate modified with the decane-coupled molecule MPTMS having the tail end of SH is relatively depositable to form a high density and a small particle diameter. The gold nanoparticles show that the decane-coupled molecules with different base ends also affect the deposition type of the gold nanoparticles due to the different strength between the base end and the metal ions. The result is mainly based on the MPTMS SH. The basal end can form a stable Au-S covalent bond with the gold nanoparticles, and the binding energy of the Au-S bond is quite strong, about 120kJ/mol, 50kJ/mol than the Au-Au bond. The bond can be stronger, so that Au is more prone to bond with SH, and many 14 201026907 gold particle nuclei are formed instead of Au and Au bond aggregates to grow into larger particle size gold particles. Therefore, it is modified by MPTMS. The B substrate can deposit a single-layered gold nanoparticle film having a higher density and a smaller particle size than the substrate of other kinds of decane-coupled molecules. Referring to FIG. 7, it is shown that the average particle size between the gold particles deposited on the solid substrate increases as the deposition time increases. Therefore, the Chennai can be controlled by adjusting the deposition time of the gold nanoparticles. The particle size of the rice particles is #, and further, a gold nanoparticle film having a predetermined average particle diameter can be deposited on the substrate according to application requirements. It is worth mentioning that the uv_ Vis absorption wavelength position when the general gold nanoparticles are not deposited on the substrate is 52 〇 nm, when the MpTMs-modified substrate is immersed in a gold electrolyte containing gold ions to deposit on the substrate. Gold nanoparticles, and the deposition potential is set to _〇7V, and the deposition time is 5 〇, 秒, 150 sec, 200 sec, 250 sec, 3 〇〇, 35 〇, 4 〇〇, 〇 5 分别When smuggling, the color of the substrate after deposition will change from transparent and colorless to color, color to blue. Referring to FIG. 8, the UV-Vis absorption spectra of the substrates with different deposition times are respectively measured, and the surface plasma nd of the gold nanoparticles is measured when the deposition time is extended from seconds to 500 seconds. From 559 nm red shift to about 6 〇〇 nm, and then using uv vis absorption f length to plot the deposition time, the relationship curve shown in Fig. 9 can be obtained. Will produce 'words,' the main fruit; ^ because compared with the gold nanoparticles dispersed in the aqueous solution, the distance between the gold nanoparticles on the U-body substrate will be shortened, and with the deposition time The growth of the particle size of the gold nanoparticles increases, causing the particle spacing of the particles 15 201026907 to become closer, so the electron cloud distance between the particles is also closer, resulting in a near-field energy increase and more easy to generate electrons. The collective oscillation phenomenon, therefore, causes a red shift in the UV-Vis absorption wavelength. Thereby, the optical properties of the different diameters of the gold nanoparticles formed by different deposition times can be utilized to further develop their application potential. In summary, the method for preparing the single-layer metal nanoparticle film of the present invention can achieve the following effects and advantages, so that the object of the present invention can be achieved: 1. The electrochemical deposition method can be used, and the metal can be prevented by using the surfactant dbsa. The metal nanoparticles reduced in the electrolyte are aggregated, and then passed through a substrate modified by a ruthenium-coupled molecule, so that the metal nanoparticles are stably bonded to the substrate and form a single layer, and the density is relatively high and the particle diameter is relatively The smaller film deposition morphology enables the present invention to directly synthesize a single layer of metal naphthalene on the substrate by using a suitable surfactant and a specifically modified substrate in a relatively simple and inexpensive electrochemical deposition process. Rice particle film, and has the value for commercial applications. 1. In addition to forming a single-layered metal nanoparticle film on the substrate by the method of the present invention, it is also possible to control the particle size of the metal nanoparticles deposited on the substrate by the length of deposition time for further utilization. The characteristics caused by different particle sizes are used for specific needs. For example, when the particle size of the metal nanoparticles is different, the uv_vis absorption wavelength is changed, so that the present invention has the potential to further develop its application range. 3. When the metal nanoparticle film deposited on the substrate is gold, it can utilize the non-biotoxic property of gold (Au) to further bind a specific biomolecule to a biomolecular template' and has a biotechnology product. 16 201026907 Potential. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart illustrating a conventional method for preparing a gold nanoparticle film;

2 is a flow chart showing a preferred embodiment of the method for producing a single-layered gold nanoparticle film of the present invention; and FIG. 3 is a schematic view showing the configuration of a three-electrode system used for electrochemical deposition of the preferred embodiment. Figure 4 is an energy dispersive spectroscopy (EDS) image of a single layer of gold nanoparticle film prepared in the preferred embodiment; 'Figure 5 is a scanning electron microscope photograph showing coupling with decane Molecularly modified on the substrate, 穑 穑 】 】 】 】 】 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The morphology of the particle film; the gold pattern formed by the deposition time is a curve relationship diagram, indicating the average particle size of the thin particles of the nano-particles; the gold deposition time formed by the deposition time is a curve relationship. The figure shows the UV-Vis absorption spectrum of different nano particle films; and FIG. 9 is a curve relationship diagram illustrating the correspondence between different 17 201026907 nano particle films and their UV-Vis absorption wavelength positions.

18 201026907 [Description of main component symbols] 30·····•...metal electrolyte 41 ·······...Working electrode 31..··· Substrate 42·.····...Auxiliary electrode 40·.· ·· •...three-electrode system 43 ...reference electrode

19

Claims (1)

201026907 VII 1. 2. 3. 4. 5. 6. Patent application scope: A method for preparing a single-layer metal nanoparticle film, comprising the following steps: (1) providing a substrate modified with a decane-coupled molecule; (ii) preparing a metal electrolyte comprising a metal compound component and a surfactant component mixed in a predetermined ratio, the metal compound component having a plurality of metal compounds respectively combined with a predetermined metal ion; and Iii) immersing the modified substrate in the metal electrolyte and electrochemically depositing the metal ions in the metal compound component to metal nanoparticles, thereby depositing a metal naphthalene on the substrate Rice particle film. The method for producing a single-layer metal nanoparticle film according to the scope of the patent application of the invention, wherein in the step (1), one end of the decane-coupled molecule has a group selected from the group consisting of thiol groups. And amino groups. The method for producing a single-layered metal nanoparticle film according to claim 2, wherein in the step (1), one end of the decane-coupled molecule has a thiol group. The method for producing a single-layered metal nanoparticle thin crucible according to claim 3, wherein in the step (1), the decane-coupled molecule is a thiol-propyltrioxane. The surfactant component in the metal electrolyte solution in the step (Η) in the process for producing a single-layered metal nanoparticle film according to claim 3 is selected from an anionic surfactant. According to the method of claim 5, the single-layer metal nanoparticle thin 犋 20 201026907 is manufactured by the method in which the surfactant component in the metal electrolyte is selected from the group consisting of eleven alkyl benzoic acid. The method for preparing a single-layer metal nanoparticle film according to claim 5, wherein in the step (1), the substrate is subjected to a cleaning treatment and a removal of an oxide layer, respectively, to expose the substrate to a hydroxyl group. To facilitate hydrolysis polymerization with decane-coupled molecules. 8. The method for producing a single-layer metal nanoparticle film according to the patent application 帛7 $ 'where', in the step (1), the substrate is selected to have conductivity Quality substrate. 9. The method for preparing a single-layer metal nanoparticle film according to claim 8 wherein, in the step (1), the substrate has a conductive film, and the conductive film is a material selected from the group consisting of Made of: indium tin oxide, zinc indium oxide 'zinc oxide aluminum, and zinc gallium oxide. 10. The method for producing a single-layer metal nanoparticle film according to claim 9 wherein 'in step (ii), the metal ions in the metal electrolyte are - selected from the group consisting of Metal formed: gold, silver, copper #, 钌, 钸, iron and nickel. 11. The method of producing a single-layered metal nanoparticle film according to the first aspect of the patent application, wherein the metal ions are substantially gold ions in the step (ii). 12. The method for preparing a single-layer metal nanoparticle film according to the scope of the patent application of the invention, wherein in the step (ii), the metal compound in the metal compound component is substantially tetrakisic acid . 13. The method according to claim 12, wherein the metal nanoparticle film in the step (iii) is a gold ion in the tetrakisic acid is reduced to The gold nanoparticles are then covalently bonded to the decane-coupled molecule. 14. The method for preparing a single-layer metal nanoparticle film according to claim 13, wherein in the step (iii), the three-electrode system is formed by a working electrode, an auxiliary electrode and a reference electrode. Electrochemical deposition is performed and the working electrode is connected to a substrate modified with a compound of Shi Xi Yuan, the auxiliary electrode is a platinum wire, and the reference electrode is silver/vaporized silver. 15. The method for preparing a single-layer metal nanoparticle film according to claim 14, further comprising a step (iv) after the step (iii), the step (iv) forming the metal naphthalene on the substrate After the rice particles were thinned, the deposited substrate was washed with deionized water and dried with nitrogen. 16. The method of producing a single-layered metal nanoparticle film according to claim 11, wherein in step (iii), the deposition time can be controlled And further changing the absorption wavelength position of the UV-Vis absorption spectrum of the metal nanoparticle. 17. The method for preparing a single-layer metal nanoparticle film according to claim 16, wherein in step (iii), the absorption wavelength of the UV-Vis absorption spectrum of the metal nanoparticle formed at different deposition times The position is between 520nm and 600nm. twenty two