Krause, Christian and Mirsky, Vladimir M. and Heckmann, Klaus D. (1996) Capacitive detection of surfactant adsorption on hydrophobized gold electrodes. LANGMUIR, 12 (25). pp. 6059-6064. ISSN 0743-7463
Full text not available from this repository.Abstract
Nonspecific adsorption of surfactants on polycrystalline gold electrodes, covered by a chemically adsorbed monomolecular layer of octadecanethiol, was studied by means of capacitive measurements. Homologous series of fatty acids (from decane to tetradecane acids) and dodecanepyridinium chloride were used as surfactants. The behavior of the electrode was completely different in the first and subsequent cycles of adsorption/desorption. In the first adsorption cycle, an initial capacitance jump at low concentrations (<10 mu M) occurs, while later the curves show the usual saturation behavior. The first surfactant layer could not be completely desorbed; only the electrode capacitance shown after the jump was reached. Subsequent cycles do not reveal any capacitance jumps and were completely reversible. Adsorption curves in the series of monoalkyl acids are shifted according to the Traube rule. A comparison with the surfactant adsorption at the air/water interface has been done.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SELF-ASSEMBLED MONOLAYERS; STRUCTURAL CHARACTERIZATION; ALKANETHIOL MONOLAYERS; SPECTROSCOPY; RECOGNITION; MEMBRANES; OXIDE |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2023 10:35 |
| Last Modified: | 25 May 2023 10:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51281 |
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