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Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (3): 488-492.

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Comparison of Surface-enhanced Raman Scattering Spectra of Two Kinds of Silver Nanoplate Films

TAO Jin-long1, TANG Bin1, XU Shu-ping1, PAN Ling-yun2, XU Wei-qing1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, Changchun 130012, P. R. China;
    2. College of Physics, Jilin University, Changchun 130012, P. R. China
  • Received:2011-11-14 Revised:2012-01-11 Online:2012-05-25 Published:2012-05-03
  • Contact: XU Shu-ping E-mail:xusp@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.91027010, 21073073, 20903043, 20973075, 20773045), the Research Fund for the Doctoral Program of Higher Education of China(No.20090061120089) and the Open Project of State Key Laboratory for Supramolecular Structure and Materials of China(No.201125).

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Abstract: Surface-enhanced Raman scattering(SERS) spectra of different silver nanoplate self-assembled films at different excitation wavelengths were fairly compared. Shape conversion from silver nanoprisms to nanodisks on slides was in situ carried out. The SERS spectra of 4-mercaptopyridine(4-MPY) on these anisotropic silver nanoparticle self-assembled films present that strong enhancement appeared when the excitation line and the surface plasmon resonance(SPR) band of silver substrate overlapped. In this model, the influence of the crystal planes of silver nanoplates on SERS enhancement could be ignored because the basal planes were nearly unchanged in two kinds of silver nanoplate self-assembled films.

Key words: Surface-enhanced Raman scattering(SERS), Surface plasmon resonance(SPR), Shape-dependant, Silver nanoprism, Silver nanodisk