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Method for forming double-layer orderly-arranged nanoparticles by utilizing polymers as templates

An orderly arrangement, polymer technology, applied in the fields of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of expensive equipment, low efficiency, complex preparation process, etc., and achieve the effect of small spacing size and huge application prospects.

Inactive Publication Date: 2014-09-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, although there are many methods for preparing ordered arrays of nanostructures, most of them have inherent limitations. It is difficult to achieve a high-density ultra-fine nanostructure array with a feature size of less than 30nm and a pitch of less than 100nm, and the preparation process is complicated. Expensive, low efficiency, difficult to apply in large area

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  • Method for forming double-layer orderly-arranged nanoparticles by utilizing polymers as templates
  • Method for forming double-layer orderly-arranged nanoparticles by utilizing polymers as templates
  • Method for forming double-layer orderly-arranged nanoparticles by utilizing polymers as templates

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Embodiment 1

[0027] In Example 1, a method for forming double-layer ordered nanoparticles using a polymer as a template is the same as Steps 1 to 5 in Comparative Example 1, but repeating the above steps 2 to 5 in sequence, thereby achieving twice The stacking of ordered gold nanoparticle arrays, the scanning electron microscope picture of the stacked hexagonally arranged gold nanoparticle arrays is as follows figure 2 .

Embodiment 2

[0031] In Example 2, a method for forming double-layer ordered nanoparticles using a polymer as a template is the same as Steps 1 to 5 in Comparative Example 2, but repeating the above steps 2 to 5 in order to achieve twice The stacking of ordered gold nanoparticle arrays, the scanning electron microscope picture of the formed stacked gold nanoparticle arrays arranged in strips is as follows Figure 4 .

[0032] In summary, the method of the present invention uses spin-coated multilayer polystyrene-polyvinylpyrrolidone block polymer (PS-b-PVP) to form a composite film on a silicon substrate, and uses selective solvent treatment to induce PS-b-PVP Micro-phase separation forms nano-scale micro-regions, using the strong synergistic effect of metal nanoparticles and nitrogen atoms on the pyridine ring in PS-b-PVP, that is, there is a preference for Au and Ag nanoparticles to form an ordered arrangement high-density metal nanoparticle arrays.

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Abstract

The invention discloses a method for forming double-layer orderly-arranged nanoparticles by utilizing polymers as templates. The method includes forming high-density metal nanoparticles orderly arranged in nanoscale by utilizing block polymers as the templates, and specifically includes spin-coating multiple layers of polystyrene-block-polyvinyl pyrrolidone (PS-b-PVP) on a substrate for composited forming of a film, inducing microphase separation of the PS-b-PVP to form a micro-area in nanoscale through selective-solvent treatment, and forming an orderly-arranged high-density metal nanoparticle array by a strong synergistic effect, namely prior selectivity to nanoparticles like Au (gold) and Ag (silver), of metal nanoparticles and nitrogen-atoms on pyridine rings of the PS-b-PVP. Currently, orderly-arranged metal nano-arrays are prepared by utilizing monolayer block polymers as the templates; however, according to the method, continuous spin-coating of two layers of the block polymers is utilized to obtain metal nanoparticle arrays in high-density arrangement.

Description

technical field [0001] The invention relates to the microstructure processing technology of polymers and belongs to the field of macromolecular self-assembly. Background technique [0002] Semiconductor, optical, magnetic and other metal and metal oxide nanostructure ordered arrays have great potential application prospects in the fields of photocatalysis, optoelectronics, sensors, solar cells, nanogenerators and magnetic storage due to their unique properties, and become the current International studies is one of the frontier hot areas. The unique properties and application fields of these nanostructure arrays are closely related to their type, size, shape, spatial position, and density. The method has very important theoretical significance and potential application value. At present, although there are many methods for preparing ordered arrays of nanostructures, most of them have inherent limitations. It is difficult to achieve a high-density ultra-fine nanostructure a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00B82Y30/00
Inventor 鲁从华赵阳
Owner TIANJIN UNIV
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