Dresden 2009 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DS: Fachverband Dünne Schichten
DS 23: Organic Thin Films III
DS 23.6: Vortrag
Mittwoch, 25. März 2009, 16:00–16:15, GER 38
Ionic Liquids at the Solid-Liquid Interface - Monolayer Systems Studied Using ARXPS — •Kevin Robert John Lovelock1, Claudia Kolbeck1, Till Cremer1, Florian Maier1, Natalia Paape2, Matthias Schmidt2, Bastian Etzold2, Peter Wasserscheid2, and Hans-Peter Steinrück1 — 1Lehrstuhl für Physikalische Chemie II, Egerlandstr. 3, 91058 Erlangen — 2Lehrstuhl für Chemische Reaktionstechnik, Egerlandstr. 3, 91058 Erlangen
Ionic liquids (ILs), molten salts with a melting point below 100 ∘C, are promising candidates for many applications such as electrochemistry, separation, lubrication and catalysis. Many of the processes for these applications are governed by the solid-liquid interface. Two different approaches have been used to study this interface, both using angle-resolved X-ray photoelectron spectroscopy (ARXPS). Firstly, an IL vapour deposition process has been established capable of producing sub-monolayer coverages. Investigations of specific IL-substrate interactions, surface modification and film growth modes are therefore possible. Results will be presented for a range of surfaces. Secondly, the ex-situ covalent attachment of a functionalised IL to a silicon substrate has been investigated as a model system for microreactors. Such systems can be used for supported ionic liquid phase (SILP) catalysis.