title: Self-assembled monolayers based on phenanthroline-gold(111) bonding.
abstract: The self-assembly of long-alkyl-chain substituted phenanthroline derivatives on highly oriented pyrolitic graphite (HOPG) and gold(111) is compared. Whereas the adsorption on HOPG is controlled by the affinity of alkyl chains for the substrate, which leads to flat-lying adsorbed molecules, alignments of upright-oriented molecules are formed on gold(111). This situation is explained by the bonding of chelating species with gold(111) surfaces and by the pi-stacking interaction between conjugated moieties. This intermediate situation between strong thiol-like chemical bonding and the weak n-alkane-like physical adsorption opens the route toward laterally organized functional molecular assemblies.
authors.affiliation: Laboratoire de Chimie, UMR no. 5182 CNRS/Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France.
authors.forename: François
authors.initials: F
authors.lastname: Lux
authors.forename: Gilles
authors.initials: G
authors.lastname: Lemercier
authors.forename: Chantal
authors.initials: C
authors.lastname: Andraud
authors.forename: Guillaume
authors.initials: G
authors.lastname: Schull
authors.forename: Fabrice
authors.initials: F
authors.lastname: Charra