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<p>This paper presents a polymer-brush-guided templating strategy for fabricating ordered gold plasmonic architectures. The synthesized nanostructures featuring densely packed Au nanoparticles (NPs) exhibited strong surface-enhanced Raman scattering (SERS) activity. Using a simple mechanical transfer technique, these assemblies were integrated into flexible polydimethylsiloxane (PDMS) films. Polymer encapsulation during synthesis ensures structural integrity during processing, resulting in a mechanically robust SERS substrate with exceptional analytical performance. This platform achieved 4-mercaptobenzoic acid (4-MBA) detection at 100 pmol/L (10<sup>-10</sup> mol/L) with high reproducibility (RSD=6.8%). Environmental and mechanical stability tests demonstrated 95% signal retention over 30 days and sustained functionality after 100 bending/twisting cycles. Combined with a non-destructive adhesion-transfer protocol, the substrate enabled on-site thiram detection on apple surfaces (1 μmol/L limit). This study provides a scalable approach for developing flexible SERS devices for food safety monitoring and environmental analysis.</p>

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Transparent and Flexible Surface-enhanced Raman Scattering (SERS) Substrates with High SERS Performance and Stability

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Jian-Ping Peng,
  • Pei-Jiang Liu,
  • Yu-Tao Song,
  • Shan-Zheng Zhao,
  • Xin-Yue Deng,
  • Zhen-Kai Huang

摘要

This paper presents a polymer-brush-guided templating strategy for fabricating ordered gold plasmonic architectures. The synthesized nanostructures featuring densely packed Au nanoparticles (NPs) exhibited strong surface-enhanced Raman scattering (SERS) activity. Using a simple mechanical transfer technique, these assemblies were integrated into flexible polydimethylsiloxane (PDMS) films. Polymer encapsulation during synthesis ensures structural integrity during processing, resulting in a mechanically robust SERS substrate with exceptional analytical performance. This platform achieved 4-mercaptobenzoic acid (4-MBA) detection at 100 pmol/L (10-10 mol/L) with high reproducibility (RSD=6.8%). Environmental and mechanical stability tests demonstrated 95% signal retention over 30 days and sustained functionality after 100 bending/twisting cycles. Combined with a non-destructive adhesion-transfer protocol, the substrate enabled on-site thiram detection on apple surfaces (1 μmol/L limit). This study provides a scalable approach for developing flexible SERS devices for food safety monitoring and environmental analysis.