SERS-active sites on various copper substrates
β Scribed by C. Siemes; A. Bruckbauer; A. Goussev; A. Otto; M. Sinther; A. Pucci
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 908 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0377-0486
- DOI
- 10.1002/jrs.692
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π SIMILAR VOLUMES
Porous silicon (PS) prepared from n-type Si crystal is proposed as a new material for the fabrication of sensitive substrates for surface-enhanced Raman scattering (SERS). The formation procedure for nanostructured silver films on the surface of PS was optimized. Maximum of SERS enhancement for rhod
Tbc concentration dcpendcncc of the SERS intensity of pyridinc adsorbed on a sitver clcctrodc is imwt~atcd by varying the bulk p~ridino c¢ratiok The number of SkXS-active rites dependson the p>&ine concentratbn during the okidation-reduction \*C&L The saturktcd adsorption 5s maintained at wnccnt
Evidence is given that SERS-active sites at Ag electrodes are associated with Ag+ ions, forming sparingly soluble surface complc~cs with ligands such as pyridinc molcculcs and halide ions. Such surface A$ coniplcses contribute a factor of >800 to the overall (107-fold) enhancenient, possibly via a r