Abstract
The transfer of tetraethylammonium cations across phospholipid monolayers deposited at a micropipette ITIES (interface between two immiscible electrolyte solutions) was studied using short potential step techniques. The observed current transients consisted of a capacitive and a faradaic current component, which were separated using a non-linear fit to a model function. Fits were very good. From the capacitive component, the surface coverage of lipids was calculated by applying a simple model for the monolayer configuration. It appeared that the coverage varied between 80 and 99%. The rate of ion transfer was increased slightly after the lipid addition, but no significant variations between different lipids were found. The transfer mechanism is discussed briefly.
Original language | English |
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Pages (from-to) | 69-74 |
Number of pages | 6 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 424 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 15 Mar 1997 |
Keywords
- ITIES
- Micropipette
- Phospholipid
- Short potential step