One-dimensional C60 nano chain and preparation method thereof

Abstract

The invention discloses a one-dimensional C60 nano chain and a preparation method thereof. The preparation method comprises the following steps: preparing an Au (111) surface; the preparation method comprises the following steps: depositing n-butyl mercaptan molecules on an Au (111) surface through a vapor deposition method, so that the n-butyl mercaptan molecules are assembled on the Au (111) surface in a close-packed manner, annealing, and forming a strip-shaped phase molecular template through self-assembly of the n-butyl mercaptan molecules; a molecular beam epitaxy method is adopted to grow C60 molecules on a strip-phase molecular template, and the C60 molecules are adsorbed and self-assembled on the strip-phase molecular template to form a one-dimensional C60 nano chain. The method has the advantages of high atomic precision and high purity, can regulate and control the forming process of the C60 molecular nano chain on the atomic scale, prevents agglomeration, and can precisely regulate and control the morphology and size of the nano chain.

Description

Technical Field

[0001] The invention belongs to the field of organic nano materials and relates to a one-dimensional C60 nanochain and a preparation method thereof. Background Art

[0002] C60 molecules, also known as fullerenes, have been a hot topic of scientific research since they were discovered in the mid-1980s due to their unique structure and properties. They have been widely used in many fields such as materials science, electronics and optics, biomedicine, energy, and catalysis, and have attracted the attention of many researchers. The application research of fullerene C60 and its derivative materials is an important part of the fullerene research field. The synthesis of fullerene C60 and its derivatives, the preparation of nanomaterials with different morphologies, and the systematic study of the relationship between the crystalline morphology and performance of fullerene C60 and its derivative materials are currently an important topic. The team of Professor Zhu Yanwu of the University of Science and Technology of China constructed C60 polymer crystals and long-range ordered porous carbon crystals under normal pressure, showing potential application prospects in the fields of energy storage and ion screening.

[0003] The different morphologies of C60 directly affect its physical and chemical properties, especially in terms of conductivity, photoelectric response, catalytic activity, etc. Studying the relationship between the morphology and performance of C60 will help provide a theoretical basis for its optimal design in practical applications. The different morphologies of C60 mainly include zero-dimensional (nanoparticles), one-dimensional (nanowires, nanorods), two-dimensional (nanosheets) and three-dimensional (nanospheres, nanobubbles), etc. The study of these morphologies has an important influence on the physical and chemical properties and applications of C60. One-dimensional C60 nanowires have good performance in electron transport, a wide light absorption range and high photon capture ability, good mechanical strength and flexibility, so they have application potential in field effect transistors (FETs), photovoltaic devices and photodetectors, and flexible electronic devices, and have always been a hot research topic in this field.

[0004] At present, there are two methods for preparing one-dimensional C60 nanowires: solvent evaporation and electrospinning. The solvent evaporation method is a method in which the solute is precipitated and nanowires are formed by the gradual evaporation of the solvent. It is simple to operate and low-cost, but has strict requirements on the selection of solvents and evaporation rate; the electrospinning method is a method in which a polymer solution or melt is formed into a jet stream by using a high-voltage electric field, and then stretched and solidified in the electric field to form nanofibers. The spinning process is continuous and controllable, and the morphology and properties of the nanofibers can be controlled by adjusting the spinning parameters, but the cost is high, and the evaporation and solidification speed of the solvent during the spinning process may affect the size and morphology of the nanofibers. Summary of the invention

[0005] The purpose of the present invention is to provide a one-dimensional C60 nanochain and a preparation method thereof, so as to solve the problem that the prior art cannot accurately control the size and morphology of the nanowires.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A method for preparing a one-dimensional C60 nanochain, comprising: Preparation of Au (111) surface; n-Butanethiol molecules are deposited on the Au (111) surface by vapor deposition, so that the n-Butanethiol molecules are assembled on the Au (111) surface in a close-packed phase arrangement. After annealing, the n-Butanethiol molecules form a strip phase molecular template through self-assembly. The C60 molecules are grown on the strip-phase molecular template by molecular beam epitaxy. The C60 molecules are adsorbed and self-assembled on the strip-phase molecular template to form a one-dimensional C60 nanochain.

[0007] Furthermore, the method for preparing the Au (111) surface comprises: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773K. After treatment, the close-packed plane of Au atoms with the lowest energy was obtained, forming the Au (111) plane.

[0008] Furthermore, the process of depositing n-butyl mercaptan molecules on the Au (111) surface by the vapor deposition method includes: After a freeze-thaw cycle, n-butyl mercaptan was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 3×10 -5 ~6×10 -5 mbar of n-butyl mercaptan vapor and reacted at room temperature for 1.5 to 3 h, causing the n-butyl mercaptan molecules to assemble in a close-packed phase on the Au (111) surface.

[0009] Furthermore, the annealing is performed by direct current heating, and the current of the direct current heating is 0.12-0.16A.

[0010] Furthermore, the annealing temperature is 40-60° C., and the annealing time is 0.5-2 h.

[0011] Furthermore, the purity of the C60 is greater than 99%.

[0012] Furthermore, the process of growing the C60 molecules on the strip phase molecular template by molecular beam epitaxy includes: The C60 molecular sample is placed in the evaporation source, and an external direct current source is connected to pass direct current, so that the C60 molecules grow on the strip phase molecular template.

[0013] Furthermore, the growth temperature of the C60 molecules is 270-290° C., and the growth time is 5-15 minutes.

[0014] Furthermore, the volume ratio of the C60 molecule to the n-butyl mercaptan molecule is 1:2-4.

[0015] A one-dimensional C60 nanochain prepared by the preparation method.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method for preparing a one-dimensional C60 nanochain. The method comprises depositing n-butyl mercaptan organic molecules (CH3CH2CH2SH) onto the surface of Au (111) by a vapor deposition method, and forming a strip phase molecular template by adjusting the coverage of n-butyl mercaptan molecules on the surface of Au (111). Then, a molecular beam epitaxy method is used to grow C60 molecules on the strip phase molecular template. Due to the spatial confinement effect between binary molecules, the C60 molecules are deposited on the thiol molecule-Au (111) surface for adsorption and self-assembly, and finally form a one-dimensional C60 molecular nanochain with atomic-level precision and high purity. The arrangement and size of the nanochain can be precisely controlled at the atomic level. The thiol molecule selected as the molecular template in the present invention is n-butyl mercaptan. When the n-butyl mercaptan molecule is deposited, -SH in the n-butyl mercaptan molecule is dehydrogenated and combined with Au atoms on the surface to form a gold-sulfur bond (Au-S), which is relatively stable. The n-butyl mercaptan molecular template can be regarded as a regulating medium. The adsorption self-assembly of C60 molecules on the n-butyl mercaptan-Au surface relies on the van der Waals force. The assembly configuration of n-butyl mercaptan molecules can regulate the structure of C60 molecules. Through the interaction between molecules and substrates, and molecules and molecules, the self-assembly finally reaches an equilibrium state. Compared with the prior art, the present invention can not only regulate the formation process of C60 molecular nanochains at the atomic scale to prevent agglomeration, but also accurately regulate the morphology and size of nanochains.

[0017] The alkylthiol molecule selected in the present invention is an n-butylthiol molecule with a carbon chain length of 4. There are various types of alkylthiol molecules. Alkylthiol molecules with different carbon chain lengths will form different templates when adsorbed and self-assembled on the Au (111) surface. Different self-assembly structures can also be formed by controlling the ratio of the thiol molecule-C60 binary molecular system. The present invention can form a variety of C60 structures based on different types of thiol molecules and different ratios of thiol molecules-C60 binary molecular systems, providing potential research value for exploring the self-assembly system of C60 molecules. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] FIG1 is a large-scale and high-resolution strip-phase n-butyl mercaptan molecular template diagram in Example 1 of the present invention.

[0020] Figure 2 This is a one-dimensional C60 nanochain image prepared using n-butyl mercaptan molecular template in Example 1 of the present invention.

[0021] FIG. 3 is a large-scale and high-resolution STM image of C60 deposited on Au and (111) without a molecular template in Comparative Example 1 of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to understand the characteristics and effects of the present invention, the following is a general description and definition of the terms and expressions mentioned in the specification and claims. Unless otherwise specified, all technical and scientific terms used in the text are the common meanings understood by those skilled in the art for the present invention. In the event of a conflict, the definition in this specification shall prevail.

[0023] The theories or mechanisms described and disclosed herein, whether correct or incorrect, should not limit the scope of the present invention in any way, that is, the present invention can be implemented without being limited by any specific theory or mechanism.

[0024] In this article, all features such as values, quantities, contents and concentrations defined in the form of numerical ranges or percentage ranges are for simplicity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to have included and specifically disclosed all possible secondary ranges and individual values ​​within the range (including integers and fractions).

[0025] In this document, unless otherwise specified, “includes,” “including,” “contains,” “has,” or similar terms cover the meanings of “consisting of” and “mainly consisting of,” for example, “A includes a” covers the meanings of “A includes a and other” and “A only includes a.”

[0026] In this document, in order to make the description concise, not all possible combinations of various technical features in various embodiments or examples are described. Therefore, as long as there is no contradiction in the combination of these technical features, the various technical features in various embodiments or examples can be combined arbitrarily, and all possible combinations should be considered to be within the scope of this specification.

[0027] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0028] The following examples use conventional instruments and equipment in the art. The experimental methods in the following examples where specific conditions are not specified are usually carried out under conventional conditions or under conditions recommended by the manufacturer. The various raw materials used in the following examples are conventional commercial products unless otherwise specified, and their specifications are conventional specifications in the art. In the specification of the present invention and the following examples, unless otherwise specified, "%" means weight percentage, "part" means weight part, and ratio means weight ratio.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings: The present invention provides a method for preparing a one-dimensional C60 nanochain, which specifically comprises the following steps: Step 1: Prepare a clean Au (111) surface: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773 K. The clean surface obtained after argon ion treatment is the close-packed plane with the lowest energy of Au atoms, namely the Au (111) plane.

[0030] Step 2: Preparation of n-butyl mercaptan molecular template: The n-butyl mercaptan molecules were deposited on the clean Au (111) surface by vapor deposition. First, n-butyl mercaptan was subjected to 2 to 5 freeze-thaw cycles to remove air and other dissolved vapors. Then, n-butyl mercaptan was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope (STM) through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 3×10 -5 ~6×10 -5 mbar of n-butyl mercaptan vapor, react at room temperature for 1.5~3h. This exposure time is long enough, and the coverage of mercaptan molecules is high. At this time, n-butyl mercaptan molecules are assembled on the Au(111) surface in a close-packed phase. Based on this structure, DC heating is performed with a current of 0.12~0.16A, and low-temperature annealing at 40~60℃ for 0.5~2h to reduce the coverage of n-butyl mercaptan molecules on the Au(111) surface. The n-butyl mercaptan molecules will re-self-assemble into a strip phase, providing a n-butyl mercaptan molecular template for the adsorption assembly of C60.

[0031] Step 3: Preparation of one-dimensional C60 molecular chain: C60 molecules are grown by molecular beam epitaxy. C60 molecules with a purity greater than 99% are placed in an evaporation source. The external DC current source connected to the molecular evaporation source allows the C60 molecules to grow at a relatively stable temperature. The ideal growth temperature of C60 molecules is 270-290°C. After deposition for 5-15 minutes at this temperature, C60 molecules will be adsorbed and self-assembled on the n-butyl mercaptan molecular template to form a one-dimensional C60 nanochain.

[0032] By adjusting the ratio between C60 molecules and n-butyl mercaptan molecules, the volume ratio of C60 to n-butyl mercaptan is 1:2~4, which can achieve the regulation of the C60-n-butyl mercaptan binary molecular system structure. The present invention mainly adopts two methods to adjust the ratio between the two molecules. First, the proportion of C60 molecules in the binary system can be increased by depositing C60 molecules multiple times. It is worth noting that a small amount of n-butyl mercaptan molecules may also be desorbed while depositing C60 molecules. Secondly, the sample can be heat-treated at a temperature of 50°C. Heating will cause some n-butyl mercaptan molecules to desorb from the Au (111) surface. The reduction of n-butyl mercaptan molecules will generate additional space for C60 molecules to diffuse and reorganize on the surface, thereby achieving the regulation of the binary assembly structure.

[0033] The technical solution of the present invention is further described below through specific embodiments: Embodiment 1: Step 1: Prepare a clean Au (111) surface: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773 K. The clean surface obtained after argon ion treatment is the close-packed plane with the lowest energy of Au atoms, namely the Au (111) plane.

[0034] Step 2: Preparation of n-butyl mercaptan molecular template: The n-butyl mercaptan molecules were deposited on the clean Au (111) surface by vapor deposition. First, n-butyl mercaptan was subjected to three freeze-thaw cycles to remove air and other dissolved vapors. Then, it was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope (STM) through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 5×10 -5 mbar of n-butyl mercaptan vapor, reacted at room temperature for 2h, at which time n-butyl mercaptan molecules assembled on the Au (111) surface in a close-packed phase. Based on this structure, DC heating was performed and low-temperature annealing at 50°C was performed to reduce the coverage of n-butyl mercaptan molecules on the Au (111) surface. The n-butyl mercaptan molecules reassembled into a strip phase, providing a n-butyl mercaptan molecular template for the adsorption assembly of C60.

[0035] Step 3: Preparation of one-dimensional C60 molecular chain: C60 molecules were grown by molecular beam epitaxy. C60 molecules with a purity greater than 99% were placed in an evaporation source. An external DC current source connected to the molecular evaporation source made the C60 molecules grow at 290°C for 10 minutes, so that the volume ratio of C60 to n-butyl mercaptan was 1:4. C60 molecules were adsorbed and self-assembled on the molecular template to form one-dimensional C60 nanochains.

[0036] Embodiment 2: Step 1: Prepare a clean Au (111) surface: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773 K. The clean surface obtained after argon ion treatment is the close-packed plane with the lowest energy of Au atoms, namely the Au (111) plane.

[0037] Step 2: Preparation of n-butyl mercaptan molecular template: The n-butyl mercaptan molecules were deposited on the clean Au (111) surface by vapor deposition. First, n-butyl mercaptan was subjected to three freeze-thaw cycles to remove air and other dissolved vapors. Then, it was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope (STM) through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 5×10 -5 mbar of n-butyl mercaptan vapor, reacted at room temperature for 1.5h, at which time n-butyl mercaptan molecules assembled on the Au (111) surface in a close-packed phase. Based on this structure, DC heating was performed and low-temperature annealing at 45°C was performed to reduce the coverage of n-butyl mercaptan molecules on the Au (111) surface. The n-butyl mercaptan molecules reassembled into a strip phase, providing a n-butyl mercaptan molecular template for the adsorption assembly of C60.

[0038] Step 3: Preparation of one-dimensional C60 molecular chain: C60 molecules were grown by molecular beam epitaxy. C60 molecules with a purity greater than 99% were placed in an evaporation source. An external DC current source connected to the molecular evaporation source made the C60 molecules grow at 280°C for 10 minutes, so that the volume ratio of C60 to n-butyl mercaptan was 1:3. C60 molecules were adsorbed and self-assembled on the molecular template to form one-dimensional C60 nanochains.

[0039] Embodiment 3: Step 1: Prepare a clean Au (111) surface: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773 K. The clean surface obtained after argon ion treatment is the close-packed plane with the lowest energy of Au atoms, namely the Au (111) plane.

[0040] Step 2: Preparation of n-butyl mercaptan molecular template: The n-butyl mercaptan molecules were deposited on the clean Au (111) surface by vapor deposition. First, n-butyl mercaptan was subjected to three rounds of freeze-thaw cycles to remove air and other dissolved vapors. Then, it was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope (STM) through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 6×10 -5mbar of n-butyl mercaptan vapor, reacted at room temperature for 1.5h, at which time n-butyl mercaptan molecules assembled on the Au (111) surface in a close-packed phase. Based on this structure, DC heating was performed and low-temperature annealing at 50°C was performed to reduce the coverage of n-butyl mercaptan molecules on the Au (111) surface. The n-butyl mercaptan molecules reassembled into a strip phase, providing a n-butyl mercaptan molecular template for the adsorption assembly of C60.

[0041] Step 3: Preparation of one-dimensional C60 molecular chain: C60 molecules were grown by molecular beam epitaxy. C60 molecules with a purity greater than 99% were placed in an evaporation source. An external DC current source connected to the molecular evaporation source made the C60 molecules grow at 290°C for 5 minutes, so that the volume ratio of C60 to n-butyl mercaptan was 1:3. C60 molecules were adsorbed and self-assembled on the molecular template to form one-dimensional C60 nanochains.

[0042] Embodiment 4: Step 1: Prepare a clean Au (111) surface: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773 K. The clean surface obtained after argon ion treatment is the close-packed plane with the lowest energy of Au atoms, namely the Au (111) plane.

[0043] Step 2: Preparation of n-butyl mercaptan molecular template: The n-butyl mercaptan molecules were deposited on the clean Au (111) surface by vapor deposition. First, n-butyl mercaptan was subjected to four freeze-thaw cycles to remove air and other dissolved vapors. Then, it was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope (STM) through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 6×10 -5 mbar of n-butyl mercaptan vapor, reacted at room temperature for 2.0h, at which time n-butyl mercaptan molecules assembled on the Au (111) surface in a close-packed phase. Based on this structure, DC heating was performed and low-temperature annealing at 60°C was performed to reduce the coverage of n-butyl mercaptan molecules on the Au (111) surface. The n-butyl mercaptan molecules reassembled into a strip phase, providing a n-butyl mercaptan molecular template for the adsorption assembly of C60.

[0044] Step 3: Preparation of one-dimensional C60 molecular chain: C60 molecules were grown by molecular beam epitaxy. C60 molecules with a purity greater than 99% were placed in an evaporation source. An external DC current source connected to the molecular evaporation source made the C60 molecules grow at 290°C for 15 minutes, so that the volume ratio of C60 to n-butyl mercaptan was 1:4. C60 molecules were adsorbed and self-assembled on the molecular template to form one-dimensional C60 nanochains.

[0045] Comparative Example 1: The difference from Example 1 is that no n-butyl mercaptan molecular template is prepared, and C60 molecules are directly deposited on the clean Au (111) surface.

[0046] In Example 1 of the present invention, n-butyl mercaptan molecules are grown on the Au (111) surface by vapor deposition, and the coverage of the mercaptan molecules is changed by annealing at 50°C, so that the n-butyl mercaptan molecules are self-assembled into a strip phase on the Au (111) surface. The strip phase structure of n-butyl mercaptan molecules on the Au (111) surface is shown in FIG1 , which are STM images obtained by large-scale scanning and small-scale high-resolution scanning, respectively. It can be seen that the mercaptan molecules in the figure are all strip phase structures, arranged according to a certain periodic rule, providing a template for the subsequent nucleation and growth of C60 molecules.

[0047] The STM image of C60 deposited on the n-butyl mercaptan molecular template is shown in Figure 2. Figure 2 As shown, Figure 2 The more prominent and brighter circular bright spots in the middle are C60 molecules. It can be seen that under the regulation of the strip-phase n-butyl mercaptan molecular template, each C60 molecule is arranged end to end according to the template, presenting a one-dimensional nanochain structure with regular and orderly arrangement. The length of the C60 nanochain is between a few nanometers and tens of nanometers.

[0048] The STM images of the product prepared in Comparative Example 1 obtained by large-range scanning and small-range scanning are shown in Figure 3. It can be seen that due to the lack of regulation of the molecular template, the deposited C60 molecules are irregular island structures. It can be seen from the small-range scanning STM image that the deposited C60 molecules under this condition are close-packed structures.

[0049] It can be seen from Example 1 and Comparative Example 1 that when C60 molecules are directly deposited on the surface of the Au (111) substrate without introducing the n-butyl mercaptan molecular template, C60 will aggregate into an island shape to form a close-packed phase with the lowest energy. The present invention introduces the n-butyl mercaptan molecular template to regulate the morphology of C60 after deposition on the Au (111) surface. After the introduction of the n-butyl mercaptan molecule, the n-butyl mercaptan molecular template can be used as a regulating medium to affect the adsorption and self-assembly process of the C60 after growth and deposition on the n-butyl mercaptan-Au (111) surface. At the same time, the assembly configuration of the n-butyl mercaptan molecule under the interaction of the intermolecular van der Waals force can regulate the structure of the C60 molecule, which can not only regulate the formation process of the C60 molecular nanochain at the atomic scale, but also can accurately regulate the morphology and size of the nanochain.

[0050] The alkylthiol molecule selected in the present invention is an n-butylthiol molecule with a carbon chain length of 4. There are various types of alkylthiol molecules. Alkylthiol molecules with different carbon chain lengths will form different templates when adsorbed and self-assembled on the Au (111) surface. Different self-assembly structures can also be formed by controlling the ratio of the thiol molecule-C60 binary molecular system. The present invention can form a variety of C60 structures based on different types of thiol molecules and different ratios of thiol molecules-C60 binary molecular systems, providing potential research value for exploring the self-assembly system of C60 molecules.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a one-dimensional C60 nanochain, characterized in that: include: Preparation of Au (111) surface; n-Butanethiol molecules are deposited on the Au (111) surface by vapor deposition, so that the n-Butanethiol molecules are assembled on the Au (111) surface in a close-packed phase arrangement. After annealing, the n-Butanethiol molecules form a strip phase molecular template through self-assembly. The C60 molecules are grown on the strip-phase molecular template by molecular beam epitaxy. The C60 molecules are adsorbed and self-assembled on the strip-phase molecular template to form a one-dimensional C60 nanochain.

2. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The method for preparing the Au (111) surface comprises: The Au single crystal was in-situ cleaned by 1 keV argon ion bombardment and thermal annealing at 773K. After treatment, the close-packed plane of Au atoms with the lowest energy was obtained, forming the Au (111) plane.

3. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The process of depositing n-butyl mercaptan molecules on the Au (111) surface by the vapor deposition method comprises: After a freeze-thaw cycle, n-butyl mercaptan was introduced into the ultra-high vacuum chamber of a scanning tunneling microscope through a micro-leak valve. The micro-leak valve was adjusted to control the gas flow rate, and the Au (111) surface was exposed to 3×10 -5 ~6×10 -5 mbar of n-butyl mercaptan vapor and reacted at room temperature for 1.5 to 3 h, causing the n-butyl mercaptan molecules to assemble in a close-packed phase on the Au (111) surface.

4. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The annealing is performed by direct current heating, and the current of the direct current heating is 0.12-0.16A.

5. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The annealing temperature is 40-60° C., and the annealing time is 0.5-2 h.

6. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The purity of the C60 is greater than 99%.

7. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The process of growing the C60 molecule on the strip phase molecular template by molecular beam epitaxy includes: The C60 molecular sample is placed in the evaporation source, and an external direct current source is connected to pass direct current, so that the C60 molecules grow on the strip phase molecular template.

8. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The growth temperature of the C60 molecules is 270-290° C., and the growth time is 5-15 minutes.

9. The method for preparing a one-dimensional C60 nanochain according to claim 1, characterized in that: The volume ratio of the C60 molecule to the n-butyl mercaptan molecule is 1:(2-4).

10. A one-dimensional C60 nanochain prepared by the preparation method according to any one of claims 1 to 9.

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