| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5388845 | Chemical Physics Letters | 2007 | 6 Pages |
Abstract
We investigated the effect of anions to SERS of R6G on Ag nanoparticles to get deeper insight into the chemical enhancement. It was found that SCNâ ion in addition to Clâ or Brâ ions induced prominent activation (⩾102). It accompanied marked red-shift of the emission band from R6G indicating particular electronic interaction with the Ag surfaces. In contrast, S2O32- and CNâ ions quenched SERS due to their exclusive adsorption and partial dissolution of the nanoparticles. Accordingly, these phenomena are rationalized by distinct adsorption properties of the anions, as anticipated by equilibrium constants for the complexes formed with Ag+ ions.
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Authors
Yoshihiro Maruyama, Masayuki Futamata,