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Nanometer/micron gold film and preparing method thereof

A nano-gold film technology, applied in the field of nano-materials, can solve the problems of easy fracture, weak combination, and falling off, and achieve the effect of not easy to break, simple preparation method, and mild reaction conditions

Active Publication Date: 2014-12-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a nano / micro gold film and a preparation method thereof. The nano / micro gold film is obtained, thereby solving the technical problems that the nano / micro gold film prepared by the existing nano / micro gold film deposition method is not firmly bonded, and is easy to break and fall off during stretching / bending

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the nano / micro gold film includes the following steps:

[0026] (1) Substrate surface treatment: Oxygen plasma treatment or ultraviolet light irradiation is performed on the surface of the substrate to generate oxidized active groups on the surface of the substrate to obtain a surface-activated substrate; the substrate is a dense film that does not absorb water, preferably polydimethylmethyl Silicone, glass, indium tin oxide conductive glass, polyethylene terephthalate film, polyimide film, polyethylene film or polytetrafluoroethylene film. In step (1), the oxygen plasma treatment time is 3 minutes to 5 minutes, the ultraviolet light intensity is 90 uW / cm to 180 uW / cm, and the irradiation time is 40 minutes to 90 minutes.

[0027] When the substrate is a plastic substrate, such as a polyethylene film or a polytetrafluoroethylene film, since it is easily deformed when treated with oxygen plasma, the surface treatment of the substrate should be irradi...

Embodiment 1

[0035] The nano / micro gold film provided by the present invention includes a matrix and a nano / micro gold layer. The nano / micro metal layer is deposited by metal nanoparticles, the surface of the matrix has amino groups, and the metal nanoparticles are connected to the matrix The surface amino groups form a strong interaction, so that the nano / micro gold layer is firmly attached to the surface of the substrate. The matrix is ​​a non-water-absorbing dense film, which is polydimethylsiloxane.

[0036] The preparation method of the nano / micro gold film includes the following steps:

[0037] (1) Substrate surface treatment: Oxygen plasma treatment is performed on the surface of the polydimethylsiloxane substrate to generate oxidized active groups on the surface of the substrate to obtain a surface activated substrate. The oxygen plasma treatment time is 3 minutes.

[0038] (2) Substrate surface amination: immerse the surface-activated substrate obtained in step (1) in a solution of 3-a...

Embodiment 2

[0044] The nano / micro gold film provided by the present invention includes a matrix and a nano / micro gold layer. The nano / micro metal layer is deposited by metal nanoparticles, the surface of the matrix has amino groups, and the metal nanoparticles are connected to the matrix The surface amino groups form a strong interaction, so that the nano / micro gold layer is firmly attached to the surface of the substrate. The substrate is a dense film that does not absorb water and is glass.

[0045] The preparation method of the nano / micro gold film includes the following steps:

[0046] (1) Substrate surface treatment: Oxygen plasma treatment is performed on the surface of the glass substrate to generate oxidized active groups on the surface of the substrate to obtain a surface activated substrate. The oxygen plasma treatment time is 4 minutes.

[0047] (2) Substrate surface amination: immerse the surface-activated substrate obtained in step (1) in a solution of 3-aminopropyltriethoxysilane...

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PUM

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Abstract

The invention discloses a nanometer / micron gold film and a preparing method thereof. The nanometer / micron gold film comprises a matrix and a nanometer / micron gold layer. The nanometer / micron gold layer is formed by metal nanoparticles in a deposition mode. Amidogens are arranged on the surface of the matrix. The metal nanoparticles and the amidogens on the surface of the matrix form strong interaction. The preparing method comprises the steps that (1) the surface of the matrix is subjected to oxygen plasma treatment or ultraviolet irradiation; (2) the surface-activated matrix is soaked into an NH2(CH2)3Si(OC2H5)3 solution; and (3) a mixed solution of chloroauric acid and bicarbonate of a strong base and a glucose solution are evenly mixed and are arranged on the surface-amination matrix in a coating mode, and the nanometer / micron gold film is obtained through light-avoiding reaction. According to the nanometer / micron gold film, the types of matrixes are multiple, different mechanical property requirements can be met, combining is firm, breaking is not easy, according to the method, reaction is mild, and cost is low.

Description

Technical field [0001] The invention belongs to the field of nano materials, and more specifically, relates to a nano / micro gold film and a preparation method thereof. Background technique [0002] The nano / micro gold film composed of nanoparticles has obvious surface effect, volume effect, small size effect, quantum effect and good biocompatibility. Its optical properties, electronic properties, sensing properties and biochemical properties have always been research hotspots . [0003] At present, the preparation methods of nano / micro gold layer mainly include electron beam evaporation, chemical vapor deposition (CVD), physical vapor deposition (PVD) and other methods. Although these methods can obtain a relatively uniform nano gold layer, the equipment is expensive and the process is complicated. . In 2009, Chen Hongyuan and others invented a method of chemically depositing nano-gold on PDMS. The method directly deposits gold on PDMS and is simple to prepare. However, this met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81B1/00B82Y40/00
Inventor 刘笔锋燕双仟
Owner HUAZHONG UNIV OF SCI & TECH
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