title: Modulating large-area self-assembly at the solid-liquid interface by pH-mediated conformational switching.
abstract: Dynamic surfaces: The conformational transition of 2,6-bis(1-aryl-1,2,3-triazol-4-yl)pyridine (BTP) derivatives, triggered by a change in pH, has been observed with a sub-nm resolution by STM at the solid-liquid interface. Upon addition of trifluoroacetic acid two different BTP molecules, each forming a highly ordered physisorbed monolayer, underwent significant conformational changes from their "rosette" to their "tetragon" forms, as reflected in dramatically altered 2D self-assembly over large areas extending over hundreds of nanometers (see graphic).
authors.affiliation: ISIS/CNRS UMR 7006-Université Louis Pasteur, 8 allée Gaspard Monge, 67000 Strasbourg, France.
authors.forename: Luc
authors.initials: L
authors.lastname: Piot
authors.forename: Robert M
authors.initials: RM
authors.lastname: Meudtner
authors.forename: Tamer
authors.initials: T
authors.lastname: El Malah
authors.forename: Stefan
authors.initials: S
authors.lastname: Hecht
authors.forename: Paolo
authors.initials: P
authors.lastname: Samorì