Method for assembling metal nanometer clusters of lamellar structure or structure similar to bipyramidal in high boiling point solvents

A technology of high boiling point solvents and metal nanoclusters, applied in nanotechnology and other fields

Inactive Publication Date: 2013-10-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a simple assembly method, thereby effectively solving the assembly problem of the sheet structure or bipyramidal structure of small-sized metal nanoclusters, that is, to stabilize the alkylthiol ligand prepared in advance. The metal nanoclusters are placed in two high-boiling point solvents, and the two-dimensional sheet structure or bipyramidal structure can be assembled by simple heating treatment

Method used

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  • Method for assembling metal nanometer clusters of lamellar structure or structure similar to bipyramidal in high boiling point solvents
  • Method for assembling metal nanometer clusters of lamellar structure or structure similar to bipyramidal in high boiling point solvents
  • Method for assembling metal nanometer clusters of lamellar structure or structure similar to bipyramidal in high boiling point solvents

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Experimental program
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Embodiment 1

[0020] Add 2ml of dibenzyl ether into a 10ml beaker, and dissolve 0.486mmol of HAuCl 4 4H 2 O, under magnetic stirring at room temperature, add 2.1 mmol of dodecyl mercaptan dropwise, and then keep stirring for 1 h to obtain dodecyl mercaptan-stabilized metal nanoclusters (Au 15 ). The obtained gold nanocluster solution was added to a three-necked bottle with 15ml of liquid paraffin, and the mixed solution was slowly heated (6°C / min) to 140°C under vacuum, and then reacted at 140°C for 1h. Such as figure 1 As shown, a lamellar assembly ranging from 1.2 to 1.8 nm in thickness, 100 to 200 nm in width and 300 to 1000 nm in length was obtained.

Embodiment 2

[0022] Add 2ml of dibenzyl ether into a 10ml beaker, and dissolve 0.486mmol of HAuCl 4 4H 2 O, under magnetic stirring at room temperature, 2.1 mmol of dodecyl mercaptan was added dropwise, and then kept stirring for 1 h to obtain dodecyl mercaptan-stabilized metal nanoclusters. Add the obtained gold nanocluster solution into a three-necked bottle with 15ml of liquid paraffin, and the mixed solution is slowly heated (6°C / min) to 140°C under N2 conditions, and then reacted at 140°C for 1h . Such as figure 2 As shown, a regular hexagonal sheet assembly with a thickness of 1.2-1.8nm and a size of 1um was obtained.

Embodiment 3

[0024] Add 2ml of dibenzyl ether into a 10ml beaker, and dissolve 0.486mmol of CH 3 In COOAg, under magnetic stirring at room temperature, 2.1 mmol of dodecyl mercaptan was added dropwise, and then kept stirring for 1 h to obtain dodecyl mercaptan-stabilized metal nanoclusters. The obtained gold nanocluster solution was added to a three-necked bottle with 15ml of liquid paraffin, and the mixed solution was slowly heated (6°C / min) to 140°C under vacuum, and then reacted at 140°C for 1h. Such as image 3 As shown, a lamellar structure with a thickness of 10-20 nm, a width of 100-500 nm and a length of 500-1000 nm was obtained.

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Abstract

The invention relates to a method for assembling metal nanometer clusters to be of a lamellar structure or a structure similar to a bipyramid in high boiling point solvents, and belongs to the technical field of metal nanometer cluster assembly. The metal nanometer clusters which are prepared in advance and have stable alkyl hydrosulfide ligand are placed in two high boiling point solvents, and through simple heating processing, the assembly of the two-dimension lamellar structure or the structure similar to the bipyramid is achieved. In the micro field, the assembly method is of great value to the development of the assembly technology and research on small-size nanometer cluster interfaces. In the assembly process, the method is convenient to operate and small in dangerousness and has good experimental repeatability.

Description

technical field [0001] The invention belongs to the technical field of metal nanocluster assembly, and in particular relates to a method for assembling metal nanoclusters with a sheet structure or a bipyramidal structure in two solvents with high boiling points, in particular to a method of using thiol molecules as reducing agents in advance and a stabilizer to prepare hydrophobic metal nanoclusters, using small-sized metal nanoclusters as structural units, and assembling into a lamellar structure or a bipyramidal structure through simple heat treatment in two high-boiling solvents. Background technique [0002] Assembling nanoparticles into a two-dimensional (2D) nanosheet structure can greatly promote the study of microscopic material interfaces, and is also a new frontier material for creating low-dimensional applications in fields including optics, electricity, magnetism, and biology. Therefore, it has become the focus of many researchers. With the increasing demand for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 张皓武振楠李祥伟李婷婷杨柏
Owner JILIN UNIV
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