Surface plasmon resonance study on the interaction of a dithiosquarylium dye with metal ions

  • Kim S
  • Han S
  • Jang G
 et al. 
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The detection of some metal ions has been investigated using an optical sensor based on surface plasmon resonance (SPR). A multilayer sensing chip was prepared with a dithiosquarylium (DTSQ) dye sensing layer coating on a gold layer. Using the DTSQ dye as a metal ion sensing molecule, a highly selective response for Ag+ was observed. © 2000 Elsevier Science Ltd.

Author-supplied keywords

  • Dithiosquarylium (DTSQ) dye
  • Metal ion sensor
  • Resonance angle
  • Surface plasmon resonance (SPR)

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  • S.-H. Kim

  • S.-K. Han

  • G.-S. Jang

  • K.-N. Koh

  • S.-W. Kang

  • S.-R. Keum

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