Preparation method of high polymer based metal nano particle composite SERS substrate material

A nanoparticle and substrate material technology, applied in the field of nanomaterials, can solve the problems of complicated SERS substrate preparation and high cost, and achieve the effect of promoting long-term storage stability, low cost and simple steps

Inactive Publication Date: 2017-12-29
TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of complex preparation and high cost of existing SERS substrates, the present invention provides a method for preparing polymer-based metal nanoparticles composite SERS substrate materials

Method used

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  • Preparation method of high polymer based metal nano particle composite SERS substrate material
  • Preparation method of high polymer based metal nano particle composite SERS substrate material
  • Preparation method of high polymer based metal nano particle composite SERS substrate material

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specific Embodiment approach 1

[0020] Embodiment 1: A method for preparing a polymer-based metal nanoparticle composite SERS substrate material according to this embodiment is carried out in the following steps:

[0021] 1. Add polyaniline powder, hexamethylimine and N,N-dimethylpyrrolidone into the container, and mix at a stirring speed of 50r / min to 100r / min until a uniform phase is formed to obtain a mixed solution;

[0022] 2. Coat the mixed solution obtained in step 1 on a glass slide to form a thin film, dry at a temperature of 70-90°C for 1.5h-2.5h, and then remove the thin film to obtain a polymer-based thin film;

[0023] 3. Mix the polymer-based film obtained in step 2 with the metal salt solution, and then irradiate it under gamma rays. The irradiation dose rate is 1kGy / h~20kGy / h, and the irradiation time is 1h~10h. drying under the condition of 70-90°C for 1.5h-2.5h to obtain the polymer-based metal nanoparticle composite SERS base material.

[0024] The mixing of the polymer-based film and the...

specific Embodiment approach 2

[0025] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass ratio of polyaniline powder and hexamethylimine in step 1 is 2:0.5-1. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass ratio of polyaniline powder and hexamethylimine described in step 1 is 2:0.8. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

A method for preparing a polymer-based metal nanoparticle composite SERS substrate material. The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a polymer-based metal nanoparticle composite SERS base material. The invention aims to solve the problems of complex preparation and high cost of the existing SERS substrate. Method: 1. Mix polyaniline powder, hexamethylimine and N,N-dimethylpyrrolidone to obtain a mixed solution; 2. Apply the mixed solution on a glass slide to form a film, and remove the film after drying to obtain A polymer-based film; 3. Mix the polymer-based film with a metal salt solution, and then irradiate it under gamma rays to obtain a polymer-based metal nanoparticle composite SERS substrate material. The preparation method of the present invention adopts gamma rays with strong reducibility to prepare metal nanoparticles with strong SERS activity through an in-situ reduction method, realizes the preparation of the SERS substrate at one time, and has a simple and reliable process.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a polymer-based metal nanoparticle composite SERS base material. Background technique [0002] SERS detection technology has been widely used in various fields such as physics, chemistry, biology, medicine, materials, etc., and has become an important tool for the detection of trace molecules of substances. The preparation of active substrates is the prerequisite for obtaining SERS signals. In order to use SERS as a routine and online analysis tool, the prepared SERS substrates should have the characteristics of strong enhancement ability, good uniformity, easy preparation and storage, and convenient use. [0003] At present, the commonly used SERS substrates mainly include metal electrode active substrates, metal island film active substrates, chemical etching and chemical deposition substrates, grid-like active substrates rich in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/14B22F9/24
CPCC23C18/14B22F9/24
Inventor 赵弘韬李志刚张楠斯琴图雅王强徐平
Owner TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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