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Published on: December 4, 2014
Thickness-dependent molecular arrangement and topography of ultrathin ionic liquid films on a silica surface
Xiao Gong1, Scott Frankert, Yongjin Wang
1Department of Chemical and Petroleum Engineering, University of Pittsburgh, 1237 Benedum Hall, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, USA.
Chemical Communications (Cambridge, England)
|July 26, 2013
Abstract:
The molecular arrangement and topography of ultrathin ionic liquids (ILs) on a silicon wafer have been studied by AFM and ARXPS, respectively. The results indicate a transition from an "anion-cation" layered (smooth) structure to a "drop-on-layer"/"sponge" (rough) structure when the film gets thicker, which can be attributed to the competition between solid/IL attraction and anion-cation cohesion.
