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Nano Research

, Volume 7, Issue 8, pp 1177–1187 | Cite as

Polyacrylic acid sodium salt film entrapped Ag-nanocubes as molecule traps for SERS detection

  • Zhulin Huang
  • Guowen MengEmail author
  • Qing Huang
  • Bin Chen
  • Fei Zhou
  • Xiaoye Hu
  • Yiwu Qian
  • Haibin Tang
  • Fangming Han
  • Zhaoqin Chu
Research Article

Abstract

Surface-enhanced Raman spectroscopy (SERS) is a fast analytical technique for trace chemicals; however, it requires the active SERS-substrates to adsorb analytes, thus limiting target species to those with the desired affinity for substrates. Here we present networked polyacrylic acid sodium salt (PAAS) film entrapped Ag-nanocubes (denoted as Ag-nanocubes@PAAS) as an effective SERS-substrate for analytes with and without high affinity. Once the analyte aqueous solution is cast on the dry Ag-nanocubes@PAAS substrate, the bibulous PAAS becomes swollen forcing the Ag-nanocubes loose, while the analytes diffuse in the interstices among the Ag-nanocubes. When dried, the PAAS shrinks and pulls the Ag-nanocubes back to their previous aggregated state, while the PAAS network “detains” the analytes in the small gaps between the Ag-nanocubes for SERS detection. The strategy has been proven effective for not only singleanalytes but also multi-analytes without strong affinity for Ag, showing its potential in SERS-based simultaneous multi-analyte detection of both adsorbable and non-adsorbable pollutants in the environment.

Keywords

SERS Ag-nanocube polyacrylic acid sodium salt trace detection 

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Zhulin Huang
    • 1
  • Guowen Meng
    • 1
    • 2
    Email author
  • Qing Huang
    • 3
  • Bin Chen
    • 1
  • Fei Zhou
    • 1
  • Xiaoye Hu
    • 1
  • Yiwu Qian
    • 1
  • Haibin Tang
    • 1
  • Fangming Han
    • 1
  • Zhaoqin Chu
    • 1
  1. 1.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State PhysicsChinese Academy of SciencesHefeiChina
  2. 2.University of Science and Technology of ChinaHefeiChina
  3. 3.Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical ScienceChinese Academy of SciencesHefeiChina

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