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Two-dimensional gold membrane self-assembly preparation method with surface enhanced Raman scattering effect

A technology of surface-enhanced Raman and scattering effects, which is applied in the field of self-assembly preparation of two-dimensional gold films with surface-enhanced Raman scattering effects, and can solve problems such as good stability and good signal reproducibility

Inactive Publication Date: 2011-02-02
SHANGHAI NORMAL UNIVERSITY
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Problems solved by technology

However, the existing technology cannot prepare the ideal two-dimensional metal film with good stability, good signal reproducibility, and surface-enhanced Raman scattering effect. It is still a difficult task to prepare a SERS-type active substrate with good reproducibility. project

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  • Two-dimensional gold membrane self-assembly preparation method with surface enhanced Raman scattering effect
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  • Two-dimensional gold membrane self-assembly preparation method with surface enhanced Raman scattering effect

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Embodiment Construction

[0033] The present invention will be further described below through specific embodiments.

[0034] Two-dimensional gold film self-assembly preparation method with surface-enhanced Raman scattering effect; 2.0ml of 0.0010g ml -1 The chloroauric acid solution was dissolved in 20ml of aqueous solution and heated to boiling with constant stirring. Then, 0.4 ml of 1% sodium citrate was slowly added to the above solution. React at 80°C for 45 minutes; at the same time, put the cleaned ITO glass under the condition of pH=10 for 10 -4 mol L -1 Sodium phytate solution was soaked for 30 minutes, and then, the modified ITO glass was immersed in the previously prepared gold sol for 2 hours to prepare samples; finally, the prepared substrate was stored at 4 °C.

[0035] The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have modifications and changes...

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Abstract

The invention relates to a two-dimensional gold membrane self-assembly preparation method with a surface enhanced Raman scattering effect, belonging to the preparation methods of two-dimensional gold membranes. The two-dimensional metal membrane with good stability, good signal repeatability and surface enhanced Raman scattering effect can not be prepared in the prior art. The method comprises the steps of: cleaning indium tin oxide glass, dipping into a phytic acid micellar solution, and assembling for 30min; diluting a 2.0ml 0.0010g m1-1 chloroauric acid solution with distilled water for 10times, stirring and heating to be boiled; dropping a 0.4m1, 1 percent sodium citrate solution, reacting for 45min at a temperature of 80 DEG C to prepare uniformly dispersed nano gold gel; and dipping the assembled indium tin oxide glass into the nano gold gel for 2h to prepare the two-dimensional gold membrane. The preparation method has the advantages of simple preparation method and low cost; and the prepared two-dimensional gold membrane has the advantages of stronger enhanced Raman scattering effect, good stability and long storage time.

Description

technical field [0001] The invention belongs to a method for preparing a two-dimensional gold film, in particular to a method for preparing a self-assembly of a two-dimensional gold film with a surface-enhanced Raman scattering effect. Background technique [0002] Scattering occurs when light is irradiated on a substance, and the frequency of light changes after scattering. The frequency change depends on the characteristics of the scattering material. In addition to the elastic component with the same wavelength as the excitation light, the scattered light also has a wavelength longer than that of the excitation light. Long and short components, this phenomenon is called Raman effect. The inelastic scattering produced by the interaction between molecular vibrations, optical phonons in solids and excitation light is called Raman scattering. Raman scattering is very weak and was discovered by Indian physicist Raman and others in 1928. In the prior art, the spectrum formed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 杨海峰陈希尧王娜
Owner SHANGHAI NORMAL UNIVERSITY
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