Method for self-assembling nanoparticles by means of patterned polyelectrolyte membrane

A polyelectrolyte, nanoparticle technology, applied in the nano field

Inactive Publication Date: 2011-08-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As mentioned earlier, the patented method is only for the surface modification of the entire substrate, and does not involve the selective self-assembly of limited regions of the substrate surface

Method used

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  • Method for self-assembling nanoparticles by means of patterned polyelectrolyte membrane
  • Method for self-assembling nanoparticles by means of patterned polyelectrolyte membrane
  • Method for self-assembling nanoparticles by means of patterned polyelectrolyte membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 (each step is the same as figure 1 a):

[0031] (1) the polystyrene microsphere emulsion that the diameter of 1% monodisperse is 600 nanometers is dispersed to the gas-liquid interface to form the thin film that microsphere monolayer orderly arranges with the monodisperse diameter of 1%; The film was transferred to a glass slide and dried naturally;

[0032](2) Soak the glass flakes arranged on the surface covered with microspheres in an aqueous solution of 0.5% PDDA polyelectrolyte molecules for 0.5 hours, and modify a layer of polyelectrolyte molecules on the surface of the microspheres and glass flakes, with a thickness of 0.5 to 1.5 Nano;

[0033] (3) Immerse the surface-modified microspheres and PDDA glass flakes into chloroform and ultrasonically clean them for 30 seconds to dissolve the microspheres, and the PDDA molecules modified on the surface of the microspheres will fall off simultaneously with the dissolution of the microspheres. The surface...

Embodiment 2

[0035] Embodiment 2 (each step is the same as figure 1 b):

[0036] (1) Soak the glass flake in an aqueous solution of 0.5% PDDA polyelectrolyte molecules for 0.5 hours, and modify a layer of polyelectrolyte molecules on the surface of the glass flake with a thickness of 0.5 to 1.5 nanometers;

[0037] (2) the polystyrene microsphere emulsion that the diameter of 1% monodisperse is 600 nanometers is dispersed to the gas-liquid interface to form the thin film that microsphere monolayer orderly arranges with the monodisperse diameter of 1%; The film was transferred to a PDDA-modified glass slide and dried naturally;

[0038] (3) Soak the glass flakes of surface-modified PDDA and microspheres in a monodisperse 17-nanometer gold sol for 2 hours, and modify a layer of gold nanoparticles on the PDDA molecules;

[0039] (4) Immerse the glass sheet of surface-modified PDDA, microspheres and gold nanoparticles into chloroform and ultrasonically clean for 30 seconds to dissolve the mi...

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Abstract

The invention belongs to the technical field of nanometer, and in particular relates to a method for preparing a patterned polyelectrolyte membrane by means of surface contact between a microsphere and a substrate and self-assembling nanoparticles on the polyelectrolyte membrane. Different types of nanoparticles can be modified on different areas on a surface of the substrate through modifying the different types of nanoparticles on the polyelectrolyte membranes in different steps so that a composite nanoparticle assembled body is prepared on the surface. The product prepared by using the method has a regular surface structure. Meanwhile, different materials in the regular structure have different functions. The method is possible to partially replace a plurality of traditional micro-nano processing technologies; and the obtained surface assembled body has potential applications in nanodevices, biological materials and information technology.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to a method for preparing a patterned polyelectrolyte membrane by using the surface contact between a microsphere and a substrate, and performing self-assembly of nanoparticles on the polyelectrolyte membrane. By modifying different types of nanoparticles on the polyelectrolyte membrane in different steps, it is possible to modify different types of nanoparticles in different regions of the surface of the substrate, thereby preparing a composite nanoparticle assembly on the surface. Background technique [0002] Currently, fabricating submicron or nanostructures on surfaces is one of the most important research topics in nanotechnology. In addition to traditional microelectronics processing techniques (such as laser processing, etching, imprinting, etc.), self-assembly methods show great application potential in this field. The self-assembly method is a method to spontaneo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00C04B41/51C08J7/00
Inventor 阮伟东李志士王月周铁莉毛竹于凤银郭志男赵冰
Owner JILIN UNIV
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