title: Charge-transfer complex study by chemical force spectroscopy: a dynamic force spectroscopic approach.
abstract: Charge-transfer interaction, as a reversible and rapid phenomenon, was evidenced by force microscopy. Pull-off forces were measured between a tip grafted with a trinitrofluorenone derivative and a surface functionalized with an electron-rich aromatic anthracene compound in a dodecane environment. The effect of the sweep time on the measured interaction forces is described, together with an extensive study of a competitive influence of free aromatic molecules in dodecane diluted solutions. These forces depend on the nature of the competitor and its concentration as well as on the velocity of tip/sample separation.
authors.affiliation: Equipe Catalyse Moléculaire, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182, Université Paris-Sud, Bât 420, 91405 Orsay Cedex, France.
authors.forename: Richard
authors.initials: R
authors.lastname: Gil
authors.forename: Marie-George
authors.initials: MG
authors.lastname: Guillerez
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Poulin
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Schulz