Ion permeation through Langmuir-Blodgett layers investigated by total external reflection and fluorescence study

Combined measurements of X-ray reflectivity and characteristic fluorescence yield from investigated ions excited by the primary beam give a unique opportunity for determination of the ion position in the organic system in the direction normal to the surface. This technique has been applied to study the possibility of K+ ion permeation from a solution into arachidic acid/valinomycin mixed L-B films. It was found that potassium ions are organized in clusters inside the L-B film.