Method for preparing size-controlled gold nanostars with surface Raman enhanced activity

A surface Raman-enhanced, gold nanotechnology, applied in the field of material chemistry, can solve the problems of lack of high sensitivity and achieve the effect of uniform shape and high yield
CN102837005AActive Publication Date: 2012-12-26JIANGNAN UNIV
4 Cites 35 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2012-12-26

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for preparing size-controlled gold nanostars with surface Raman enhanced activity, belonging to the technical field of material chemistry. The method is characterized by comprising the steps of synthesizing nanomaterials with the surface Raman enhanced activity through a seed-mediated growth method, wherein the nanomaterials are gold nanostars; taking polyvinylpyrrolidone as seed liquid for stabilizer-coated gold nanoparticles; and reducing chloroauric acid adsorbed on the surface of the gold nanoparticles by using the reducing capacity of polyvinylpyrrolidone, so that the nanoparticles further grow in a crystal form direction, thereby obtaining gold nanostar particles with different forms; and meanwhile, gold nanostar materials with different surface enhanced Raman scattering (SERS) activities and different particle sizes can be obtained by changing the proportion of the reaction. According to the method, the gold nanostars with the uniform form and the relatively high yield can be prepared.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention discloses a method for preparing a size-controllable gold nanostar with surface Raman enhanced activity, which belongs to the technical field of material chemistry. Background technique

[0002] As a kind of inelastic scattering spectrum, Raman spectroscopy analyzes the vibration and rotation of molecules through the scattering spectrum different from the incident light frequency, and can provide information about various normal vibration frequencies and vibrational energy levels inside the molecule. The signal of traditional Raman scattering spectroscopy is weak, and it often lacks high sensitivity as a means of information readout. In the middle and late 1970s, the discovery and confirmation of the surface-enhanced Raman scattering (SERS) effect on Au, Ag, and Cu injected new vitality into the research and application of Raman spectroscopy. It has been reported that some substances with sharp edges and pointed structures can significan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More