RELATIVE SERS ENHANCEMENT FACTORS FOR PYRIDINE ADSORBED ON A SILVER ELECTRODE - THE CHEMICAL EFFECT IN SERS AS A PRODUCT OF CHARGE-TRANSFERAND ACTIVE-SITE MECHANISMS

Authors
KUDELSKI A BUKOWSKA J JACKOWSKA K
Citation
A. Kudelski et al., RELATIVE SERS ENHANCEMENT FACTORS FOR PYRIDINE ADSORBED ON A SILVER ELECTRODE - THE CHEMICAL EFFECT IN SERS AS A PRODUCT OF CHARGE-TRANSFERAND ACTIVE-SITE MECHANISMS, Journal of Raman spectroscopy, 25(2), 1994, pp. 153-158
Citations number
21
Categorie Soggetti
Spectroscopy
Journal title
Journal of Raman spectroscopy → ACNP
ISSN journal
03770486
Volume
25
Issue
2
Year of publication
1994
Pages
153 - 158
Database
ISI
SICI code
0377-0486(1994)25:2<153:RSEFFP>2.0.ZU;2-N
Abstract
The relative SERS (surface-enhanced Raman scattering) enhancement fact ors for pyridine adsorbed on a silver electrode were determined as a f unction of the laser wavelength and applied potential. The charge-tran sfer (CT) effect on Raman intensity, G(CT), was determined hy analysin g the relative Raman intensity as a function of the potential, taking into account voltage-dependent coverage of the silver electrode. The t otal chemical effect was defined as a product of G(CT) and the so-call ed 'active-sites' effect and was estimated as equal to about 50.