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Large-area gold nanorod aligned and ordered array, preparation method and application thereof

A technology of nano-gold rods and ordered arrays, which is applied in the field of nano-materials, can solve the problem of few macroscopic large-area directional and ordered arrays of nano-gold rods, and achieve the effects of large-scale implementation, low cost, and simple and controllable process

Active Publication Date: 2016-06-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few reports on the macroscopic large-area orientation and ordering of gold nanorods on the interface.

Method used

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  • Large-area gold nanorod aligned and ordered array, preparation method and application thereof
  • Large-area gold nanorod aligned and ordered array, preparation method and application thereof
  • Large-area gold nanorod aligned and ordered array, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Example 1: Large-scale dense arrangement of gold nanorods vertically on the surface of silicon wafer substrate

[0069] (1) Preparation of nano-gold rods with different aspect ratios: the synthesis of nano-gold rods is based on the regrowth method of nano-crystal seeds, and there are mainly two steps. First, the synthesis of seed crystals: 10 ml of 0.2M cetyltrimethylammonium bromide aqueous solution and 10 ml of 5*10 -4 M chloroaurate aqueous solution was mixed, and then 1.2 ml of frozen 0.01 M sodium borohydride aqueous solution was added dropwise to the above solution, and then stirred at high speed for 2 minutes to obtain a yellow-brown nano-crystal seed solution. Second, the configuration of the gold nanorod growth solution: 47.5 ml of 0.1M cetyltrimethylammonium bromide aqueous solution was mixed with 2.5 ml of 0.01M chloroaurate aqueous solution. Then add 0.3 ml of 0.01M silver nitrate aqueous solution and 0.275 ml of 0.1M ascorbic acid aqueous solution, stir ...

Embodiment 2

[0073] Example 2: Large-scale dense arrangement of gold nanorods spread on the surface of silicon wafer substrate

[0074] (1) Preparation of nano-gold rods with different aspect ratios: the synthesis of nano-gold rods is based on the regrowth method of nano-crystal seeds, and there are mainly two steps. First, the synthesis of seed crystals: 10 ml of 0.2M cetyltrimethylammonium bromide aqueous solution and 10 ml of 5*10 -4 M chloroaurate aqueous solution was mixed, and then 1.2 ml of frozen 0.01 M sodium borohydride aqueous solution was added dropwise to the above solution, and then stirred at high speed for 2 minutes to obtain a yellow-brown nano-crystal seed solution. Second, the configuration of the gold nanorod growth solution: 47.5 ml of 0.1M cetyltrimethylammonium bromide aqueous solution was mixed with 2.5 ml of 0.01M chloroaurate aqueous solution. Then add 0.3 ml of 0.01M silver nitrate aqueous solution and 0.275 ml of 0.1M ascorbic acid aqueous solution, stir for ...

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Abstract

The invention discloses a preparation method of a large-area gold nanorod aligned and ordered array. The preparation method comprises the following steps: modifying a first high polymer material in a selected area on the surface of gold nanorods; modifying a second high polymer material which is compatible with the first high polymer material on the substrate surface; utilizing the solvent evaporation self-assembly feature to enable the gold nanorods to be aligned and distributed on the substrate surface, so as to form the large-area gold nanorod aligned and ordered array such as a gold nanorod vertical array or a gold nanorod tiled array. The invention further discloses the large-area gold nanorod aligned and ordered array and application thereof. The preparation method, disclosed by the invention, is simple and easy to implement, good in controllability, low in cost, and capable of obtaining the large-scale aligned and ordered gold nanorod array in multiple forms which can be applied to the fields such as optical electronic devices, biosensors, environment and food safety detection as a two-dimensional or three-dimensional functional material.

Description

technical field [0001] The invention relates to a nano material, in particular to a large-area directional and ordered arrangement of nano gold rods and a preparation method thereof, belonging to the technical field of nano materials. Background technique [0002] Since Richard Feynman proposed nanotechnology in 1959, nanomaterials have developed vigorously. Among them, gold nanoparticles, due to their unique optical, electrical and catalytic properties, have been widely used in different fields such as catalysis, biosensors, optical electronic devices, nanobiology and nanomedicine. Compared with isotropic spherical gold nanoparticles, anisotropic gold nanorods have two plasmon resonance modes, longitudinal and transverse, and their spectrum can be adjusted from visible light to near-infrared region, making them more suitable for application in the fields of biology and medicine. However, actual nanodevices are often composed of nano-gold rod aggregates. Therefore, regulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00B82B1/00B82Y40/00
Inventor 黄又举陈涛
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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