title: Incorporation dynamics of molecular guests into two-dimensional supramolecular host networks at the liquid-solid interface.
abstract: The objective of this work is to study both the dynamics and mechanisms of guest incorporation into the pores of 2D supramolecular host networks at the liquid-solid interface. This was accomplished by adding molecular guests to prefabricated self-assembled porous monolayers and the simultaneous acquisition of scanning tunneling microscopy (STM) topographs. The incorporation of the same guest molecule (coronene) into two different host networks was compared, where the pores of the networks either featured a perfect geometric match with the guest (for trimesic acid host networks) or were substantially larger than the guest species (for benzenetribenzoic acid host networks). Even the moderate temporal resolution of standard STM experiments in combination with a novel injection system was sufficient to reveal clear differences in the incorporation dynamics in the two different host networks. Further experiments were aimed at identifying a possible solvent influence. The interpretation of the results is aided by molecular mechanics (MM) and molecular dynamics (MD) simulations.
authors.affiliation: TUM School of Education and Center for NanoScience (CeNS), Tech. Univ. Munich, Schellingstrasse 33, 80799 Munich, Germany.
authors.forename: Georg
authors.initials: G
authors.lastname: Eder
authors.forename: Stephan
authors.initials: S
authors.lastname: Kloft
authors.forename: Natalia
authors.initials: N
authors.lastname: Martsinovich
authors.forename: Kingsuk
authors.initials: K
authors.lastname: Mahata
authors.forename: Michael
authors.initials: M
authors.lastname: Schmittel
authors.forename: Wolfgang M
authors.initials: WM
authors.lastname: Heckl
authors.forename: Markus
authors.initials: M
authors.lastname: Lackinger