1998/08/21 by Christopher J. Slevin, S. Ryley, David J. Walton +1 · 4 citations
Chemistry · Chemical Engineering · Physics and Astronomy · #Electrochemical Analysis and Applications #Analytical Chemistry and Sensors #Spectroscopy and Quantum Chemical Studies #Monolayer #Ultramicroelectrode #Chemistry #Scanning electrochemical microscopy #Oxygen #Langmuir #Electrochemistry #Analytical Chemistry (journal) #Chemical physics #Chromatography #Adsorption #Cyclic voltammetry #Electrode #Physical chemistry #Organic chemistry
paper · doi:10.1021/la980320k
openalex publication_date 1998/08/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22
A new approach is described for the quantitative study of the effect of a monolayer on solute transfer rates across an air/water interface. The technique is illustrated through measurements of oxygen transfer across a monolayer of 1-octadecanol as a function of compression. The experimental approach uses an inverted ultramicroelectrode (UME), positioned in the water phase in a Langmuir trough close to the air/water interface to induce the transfer of oxygen from air to water via the reduction (and depletion) of oxygen. The steady-state current response, measured as a function of UME−interface separation at various monolayer compressions, demonstrates that the rate of oxygen transfer is governed primarily by the accessible free area of the interface.