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A preparation method of multiple metal nanostructures

A metal nanostructure, metal nanoparticle technology, applied in nanostructure manufacturing, nanostructure manipulation, nanotechnology and other directions, to achieve the effect of preventing shedding

Active Publication Date: 2017-08-11
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single self-assembly method still has certain technical difficulties in realizing a diversified metal nanoparticle structure on the same substrate.

Method used

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  • A preparation method of multiple metal nanostructures
  • A preparation method of multiple metal nanostructures
  • A preparation method of multiple metal nanostructures

Examples

Experimental program
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Effect test

preparation example Construction

[0025] The preparation method of the multi-diversified metal nanostructure of the present invention comprises the following steps: (a) synthesizing a single dispersed gold nanoparticle solution; (b) preparing Si / SiO 2 modify the substrate; (c) assemble the gold nanoparticles on the Si / SiO 2 the surface of the substrate; (d) the Si / SiO 2 The surface of the substrate is coated with polyamide, polyimide or polyacrylic acid to form a thin film; (e) configuring a metal nanoparticle growth solution; (f) coating the surface with the Si / SiO 2 The substrate is immersed in the growth solution to grow the metal nano particles to obtain multiple metal nano structures. By self-assembling gold nanoparticles (13nm~60nm) with uniform particle size on the surface of the modified silicon substrate, a single dispersed gold nanoparticle substrate is obtained, and then an organic polymer layer is spin-coated on the surface (shown High molecular polymer layer with a chain structure; its molecular...

Embodiment 1

[0029] This embodiment provides a method for preparing multiple metal nanostructures, such as figure 1 As shown, it includes the following steps:

[0030] (a) Monodisperse gold nanoparticles (AUNPS) with an average particle size of 13nm (referred to as AUNPS) were synthesized using a classic method: first, we took 90mL of deionized water into a three-necked flask, and then added 5mL of chloroauric acid solution ( HAuCl0.01mol / L), heat the solution to a slight boil at a stirring speed of 400r, then add 5mL of sodium citrate (NaCt 3 The concentration is 0.1mol / L), keep the solution in a slightly boiling state for 15 minutes, and at the same time we will observe that the solution turns from dark purple to clear wine red, at this time stop heating and cool to room temperature for later use, the SEM picture is as follows figure 2 shown;

[0031] (b) Si / SiO2 2 Modification of the substrate: Si / SiO 2 The slices were washed in the order of ethanol, acetone, ethanol, and deionized...

Embodiment 2

[0038] This example provides a method for preparing multiple metal nanostructures. The preparation process is basically the same as that in Example 1, except that in step (e), 228 μl of chloroplatinic acid with a concentration of 0.01 mol / L is added , thus forming platinum-gold composite nanoparticles.

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Abstract

The invention relates to a preparing method for a diversified metal nanostructure. The preparing method includes the following steps that 1, a single dispersed gold nanoparticle solution is synthesized; 2, a Si / SiO2 substrate is modified; 3, gold nanoparticles are assembled on the surface of the Si / SiO2 substrate; 4, the surface of the Si / SiO2 substrate is coated to accurately control a particle growth size polymer (poly isopropyl acrylamide) to form a protective film on the surface; 5, a metal nanoparticle growth solution is prepared; 6, the Si / SiO2 substrate coated with the film on the surface is soaked in the growth solution so that the metal nanoparticles can grow to obtain the diversified metal nanostructure. In this way, the growth solution can be evenly dispersed onto the surfaces of seed crystal, disorderly and nonuniform growth of the particles can be stopped, the grown nanoparticles can be effectively prevented from falling off, and growth of the nanoparticles is accurately regulated and controlled.

Description

technical field [0001] The invention belongs to the field of preparation methods of nanometer materials, and in particular relates to a preparation method of multiple metal nanostructures. Background technique [0002] The ordered metal nanoparticle structure can realize the manipulation and control of photons at the nanoscale, not only can produce a huge local enhancement effect, but also its plasmon resonance properties have a great influence on the composition, size, shape and local medium environment of the nanostructure. It is very sensitive, which makes it have broad application prospects in the fields of surface-enhanced spectroscopy, biological and chemical sensing, nano-optical imaging, nano-photocatalysis, and nano-optoelectronic devices. The current metal nanoparticle structure with a single size, component or / and spacing can no longer meet the needs of technological development, and can achieve diversification on the same substrate (different sizes, different sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00B82Y30/00B82Y40/00
CPCB82B3/0066B82Y30/00B82Y40/00
Inventor 江林李子洋钟留彪孙迎辉
Owner SUZHOU UNIV
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