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Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs

Published on: November 17, 2023

Polyacrylonitrile as a versatile matrix for gold nanoparticle-based SERS substrates.

Saloni Sharma¹, Rajesh Kumar², Ram Manohar Yadav^1,3

¹Department of Physics, VSSD College, CSJM University Kanpur 208002 U.P. India.

Nanoscale Advances

|February 15, 2024

Summary

Researchers developed polyacrylonitrile/gold nanoparticle (PAN/AuNPs) composite porous films for ultrasensitive surface-enhanced Raman spectroscopy (SERS) detection. These films efficiently detect methylene blue dye at low concentrations, showing great potential for chemical and biological sensing.

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Last Updated: Jul 3, 2025

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Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations

Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations

Published on: June 23, 2022

Area of Science:

Materials Science
Spectroscopy
Nanotechnology

Background:

Surface-enhanced Raman spectroscopy (SERS) requires highly sensitive substrates for molecule detection.
Developing efficient and responsive SERS substrates is crucial for advancing analytical techniques.

Purpose of the Study:

To prepare and characterize polyacrylonitrile/gold nanoparticle (PAN/AuNPs) composite porous films.
To evaluate the efficacy of these films as SERS substrates for detecting methylene blue (MB) dye.

Main Methods:

Fabrication of PAN/AuNPs composite porous films using a dip coating technique.
Characterization of film morphology and composition using Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD).
UV-vis absorption spectroscopy to confirm the presence of gold nanoparticles (AuNPs).

Main Results:

The prepared films exhibited a highly porous structure with uniformly dispersed AuNPs.
XRD and UV-vis spectra confirmed the successful incorporation of AuNPs.
The PAN/AuNPs SERS substrates detected 50 nM methylene blue dye with a significant Raman peak enhancement.
An enhancement factor (EF) of approximately 10^6 was achieved for MB detection.

Conclusions:

PAN/AuNPs composite porous films are effective and reliable SERS substrates.
These substrates demonstrate excellent sensitivity and potential for detecting trace analytes.
The developed films show promise for applications in chemical and biological sensing.