Abstract
Surface Raman scattering has been used to study Ag electrodes emersed from LiBr solutions of dimethylsulfoxide (DMSO). Interfacial DMSO structure is generally similar to that in-situ, although spectral evidence for an emersion-induced potential shift is observed. The DMSO orientation at Ag electrodes is driven by interaction of the oxygen atom at potentials positive of the potential of zero charge (pzc) and the sulfur atom at potentials negative of the pzc. Pronounced restructuring of DMSO occurs in the vicinity of the pzc. Specific interactions between DMSO and electrolyte ions are clearly detected in the emersed interface. The observed potential shift is attributed to reorientation of the DMSO solvent dipoles at the emersed layer
| Original language | English (US) |
|---|---|
| Pages (from-to) | 32-42 |
| Number of pages | 11 |
| Journal | Journal of Electroanalytical Chemistry |
| Volume | 479 |
| Issue number | 2 |
| State | Published - Dec 22 1999 |
Fingerprint
Keywords
- Emersed electrochemical interface
- Non-aqueous solutions
- Surface enhanced Raman scattering
ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
Surface Raman scattering of interfaces at Ag electrodes emersed from dimethylsulfoxide : Spectroscopic evidence for an emersion-induced potential shift. / Shen, Aijin; Pemberton, Jeanne E.
In: Journal of Electroanalytical Chemistry, Vol. 479, No. 2, 22.12.1999, p. 32-42.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Surface Raman scattering of interfaces at Ag electrodes emersed from dimethylsulfoxide
T2 - Spectroscopic evidence for an emersion-induced potential shift
AU - Shen, Aijin
AU - Pemberton, Jeanne E
PY - 1999/12/22
Y1 - 1999/12/22
N2 - Surface Raman scattering has been used to study Ag electrodes emersed from LiBr solutions of dimethylsulfoxide (DMSO). Interfacial DMSO structure is generally similar to that in-situ, although spectral evidence for an emersion-induced potential shift is observed. The DMSO orientation at Ag electrodes is driven by interaction of the oxygen atom at potentials positive of the potential of zero charge (pzc) and the sulfur atom at potentials negative of the pzc. Pronounced restructuring of DMSO occurs in the vicinity of the pzc. Specific interactions between DMSO and electrolyte ions are clearly detected in the emersed interface. The observed potential shift is attributed to reorientation of the DMSO solvent dipoles at the emersed layer
AB - Surface Raman scattering has been used to study Ag electrodes emersed from LiBr solutions of dimethylsulfoxide (DMSO). Interfacial DMSO structure is generally similar to that in-situ, although spectral evidence for an emersion-induced potential shift is observed. The DMSO orientation at Ag electrodes is driven by interaction of the oxygen atom at potentials positive of the potential of zero charge (pzc) and the sulfur atom at potentials negative of the pzc. Pronounced restructuring of DMSO occurs in the vicinity of the pzc. Specific interactions between DMSO and electrolyte ions are clearly detected in the emersed interface. The observed potential shift is attributed to reorientation of the DMSO solvent dipoles at the emersed layer
KW - Emersed electrochemical interface
KW - Non-aqueous solutions
KW - Surface enhanced Raman scattering
UR - http://www.scopus.com/inward/record.url?scp=0033358041&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033358041&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033358041
VL - 479
SP - 32
EP - 42
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
SN - 0022-0728
IS - 2
ER -