Unlock instant, AI-driven research and patent intelligence for your innovation.

Silver nanoparticle thin film with surface plasma resonance (SPR) reversible regulating and control properties and preparation method and application thereof

A plasmon resonance, silver nanoparticle technology, applied in the field of smart film materials, can solve the problems of poor cycle life, slow reversible plasmon resonance regulation rate, small spectral modulation range, etc., and achieve excellent light response characteristics and excellent water vapor response characteristics. , The effect of excellent SPR reversible regulation characteristics

Active Publication Date: 2020-01-10
SHANDONG UNIV
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still the following problems in the research on the regulation of the external field response dynamic reversible plasmon resonance characteristics in the solid phase: (1) the research mainly focuses on gold nanoparticles; (2) the modulation range of the plasmon resonance absorption spectrum is small; (3 ) The rate of reversible plasmon resonance regulation is slow, and the cycle life is poor
Due to the active chemical properties of silver nanoparticles, so far, the research on the dynamic and reversible regulation of the plasmon resonance properties of silver nanoparticles (AgNPs) by adjusting the distance between adjacent silver nanoparticles (AgNPs) under solid phase has not been reported yet.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Silver nanoparticle thin film with surface plasma resonance (SPR) reversible regulating and control properties and preparation method and application thereof
  • Silver nanoparticle thin film with surface plasma resonance (SPR) reversible regulating and control properties and preparation method and application thereof
  • Silver nanoparticle thin film with surface plasma resonance (SPR) reversible regulating and control properties and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A method for preparing a silver nanoparticle thin film reversibly regulated by plasmon resonance, comprising the following steps:

[0068] (1) First, the spectral absorption peak is 420nm, the spectral absorption range is 400-450nm, the spectral absorption range is 400-480nm, the spectral absorption range is 400-510nm, the spectral absorption range is 400-550nm, and the spectral absorption range is 400nm. The -590nm silver nanoparticle assembly is dispersed in a mixed solvent of ethanol and water, stirred, and ultrasonically mixed evenly. Wherein, the mass fraction of the silver nanoparticle assembly is 20 mg / mL, and the mass fraction of ethanol in the mixed solvent is 65%.

[0069] (2) Then, prepare a sodium carbonate aqueous solution with a concentration of 0.1M, immerse the cleaned glass sheet in the sodium carbonate aqueous solution, take out the glass sheet and dry it at 50° C. for later use.

[0070] (3) Place the glass sheet treated with sodium carbonate on a flat...

Embodiment 2

[0073] A method for preparing a silver nanoparticle thin film reversibly regulated by plasmon resonance, comprising the following steps:

[0074] (1) First, disperse the silver nanoparticle assembly with a spectral absorption range of 400-510 nm in a mixed solvent of ethanol and water, stir, and ultrasonically mix evenly. Wherein, the mass fraction of the silver nanoparticle assembly is 30 mg / mL, and the mass fraction of ethanol in the mixed solvent is 75%.

[0075] (2) Then, prepare an aqueous solution of sodium silicate with a concentration of 0.5M, immerse the cleaned glass sheet in the aqueous solution of sodium silicate, take out the glass sheet and dry it at 50°C for later use.

[0076] (3) Place the glass flakes treated with sodium carbonate on a flat heating platform, set the heating temperature to 50°C, then adopt the method of spraying, the spraying flow rate is 2mL / min, and the spraying time per square centimeter is 5s, and the silver nanoparticles The assembly dis...

Embodiment 3

[0082] A method for preparing a silver nanoparticle thin film reversibly regulated by plasmon resonance, comprising the following steps:

[0083] (1) First, the silver nanoparticle assembly with a spectral absorption range of 400-510 nm is dispersed in a mixed solvent of ethanol and water, stirred, and mixed uniformly by ultrasonic. Wherein, the mass fraction of the silver nanoparticle assembly is 40 mg / mL, and the mass fraction of ethanol in the mixed solvent is 80%.

[0084] (2) Then, prepare a sodium borate aqueous solution with a concentration of 0.2M, immerse the cleaned glass sheet in the sodium borate aqueous solution, take out the glass sheet and dry it at 50°C for later use.

[0085] (3) Place the glass sheet treated with sodium carbonate on a flat heating platform, set the heating temperature to 40°C, then adopt the method of spraying, the spraying flow rate is 2mL / min, and the spraying time per square centimeter is 5s, and the silver nanoparticles The assembly disp...

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

PUM

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a silver nanoparticle thin film with surface plasma resonance (SPR) reversible regulating and control properties and a preparation method and application thereof. The silver nanoparticle thin film with the SPR reversible regulating and control properties comprises a substrate; and strong-alkali and weak-acid salt covering layers are evenly arranged on the surface of the substrate, and thin layers formed by stacking of silver nanoparticles are evenly arranged on the surfaces of the strong-alkali and weak-acid salt covering layers. The substrate is provided, and after being immersed in a strong-alkali and weak-acid salt aqueous solution, the substrate is taken out and then heated and dried; and silver nanoparticle assembly dispersion liquid is provided, the silver nanoparticle assembly dispersion liquid is sprayed to the surface of the substrate through a spraying method, and then the silver nanoparticle thin film is obtained. The silver nanoparticle thin film with the SPR reversible regulating and control properties has the excellent SPR reversible regulating and control properties, and the silver nanoparticle thin film can be driven to generate reversible color conversion through water vapor application, breathing-out and even slow touching of fingertips.

Description

technical field [0001] The invention relates to a silver nanoparticle film reversibly regulated by plasma resonance, a preparation method and application thereof, and belongs to the technical field of intelligent film materials. Background technique [0002] Due to their strong plasmon resonance (SPR) properties, noble metal nanoparticles have important applications in the fields of surface-enhanced Raman scattering signals, biometrics, visual detection, color display, catalysis, and optoelectronics, and have attracted the attention of the academic community. In recent years, since the dynamic and reversible regulation of the plasmon resonance properties of noble metal nanoparticles has important applications in the fields of anti-counterfeiting, environmental detection, biological and chemical detection, it has become the focus of researchers. A single noble metal nanoparticle is assembled to form an assembly by controlling the interparticle interaction by functionalizing i...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/24C09D1/00
CPCB29C41/24B29L2007/002C09D1/00
Inventor 王文寿刘伦涛李新典杨智民
Owner SHANDONG UNIV