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Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (5): 774.

• Articles • Previous Articles     Next Articles

NIR-Surface-enhanced Raman Scattering of Crystal Violet Coadsorbed with Halide and Halate Ions

YE Xiao-Lan1, DENG Wen-Jie2, LIANAG Er-Jun3, W. Kiefer4   

  1. 1. Department of Chemistry, Hangzhou University, Hangzhou, 310028;
    2. Department of Chemistry, Hangzhou Normal College, Hangzhou, 310012;
    3. Henan Key Laboratory of Applied Lasers, Zhengzhou University, Zhengzhou, 450052;
    4. Institute of Physical Chemistry, Würzburg University, D-970747, Würzburg, Germany
  • Received:1997-03-04 Online:1998-05-24 Published:1998-05-24

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Abstract: The influence of halide and halate ions as well as pyridine on near-infrared surface enhanced Raman scattering(NIR-SERS) of crystal violet was studied with NIR excitation and a scanning double grating spectrometer. The interaction of crystal violet with these ions(or the molecule) and the interaction of crystal violet with colloidal silver surface have been revealed. Cl-, Br-, I- and BrO3- ions as well as pyridine give rise to a large enhancement of the Raman modes of crystal violet while no Raman bands of it could be observed in the presence of CIO3- and IO3- ions. The chemical enhancement in the NIR-SERS was found and its enhancement factors caused by Cl-, Br-, I- and BrO3- ions were estimated to be about 49, 77, 15 and 36, respectively.

Key words: Crystal violet, Halide ion, Halate ion, NIR-SERS

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