Surface composition/organization of ionic liquids with Au nanoparticles revealed by high-sensitivity low-energy ion
Alan Kauling1, Günter Ebeling, Jonder Morais
1Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS) , Post Office Box 15003, Avenida Bento Gonçalves, 9500 Porto Alegre, Rio Grande do Sul, Brazil.
Langmuir : the ACS Journal of Surfaces and Colloids
|October 25, 2013
Abstract:
High-sensitivity low-energy ion scattering (HS-LEIS) analysis was used to elucidate the outermost layer of both functionalized and non-functionalized imidazolium ionic liquids (ILs). The IL outermost layer is composed of all atoms of both cations and anions. The HS-LEIS analyses also allow for quantitative measurement of the thickness of IL overlayers on Au nanoparticles prepared by sputter deposition, which was shown to be a monolayer of ions, as predicted by density functional theory calculations.
