Université de Fribourg

Scanning tunneling microscopy at multiple voltage biases of stable “ring-like” Ag clusters on Si(111)–(7 × 7)

Mariotti, Nicolas ; Didiot, Clément ; Schwier, Eike Fabian ; Monney, Claude ; Perret-Aebi, Laure-Emmanuelle ; Battaglia, Corsin ; Garnier, M.G. ; Aebi, Philipp

In: Surface Science, 2012, vol. 606, no. 23-24, p. 1755-1759

Since more than twenty years it is known that deposition of Ag onto Si(111)–(7 × 7) leads under certain conditions to the formation of so-called “ring-like” clusters, that are particularly stable among small clusters. In order to resolve their still unknown atomic structure, we performed voltage dependent scanning tunneling microscopy (STM) measurements providing interesting...

Université de Fribourg

Diastereoselective preparation of Cu(I) and Ag(I) double helices by the use of chiral bis-bipyridine ligands

Perret-Aebi, Laure-Emmanuelle ; Zelewsky, Alexander von ; Neels, Antonia

In: New Journal of Chemistry, 2009, vol. 33, p. 462–465

Chiral bis-5,6-pinene bipyridine type ligands have been used to form, through self-assembly reaction, dinuclear coordination compounds which show a highly diastereoselective formation of double helices with copper(I) and silver(I) as coordination centers.