Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 73: Organic Molecules on Inorganic Substrates V: Adsorption, Growth and Networks
O 73.5: Vortrag
Mittwoch, 18. März 2020, 16:15–16:30, TRE Phy
Solvation of Large Organic Molecules in Two Dimensions - Imaging Single Cage Precursor Molecules in Chloroform Supported on Ag(111) — •Marvin Quack1, Karina Morgenstern1, Haeri Lee2, and Guido Clever2 — 1Physical Chemistry I, Ruhr-University of Bochum, Germany — 2Chair for Bioinorganic Chemistry, TU Dortmund, Germany
Exploring the solvation of molecules is of utmost importance for the basic understanding of chemical processes, since the interaction of solvent and solute determines reaction pathways as well as the structure of the solute. However, the investigation of solvated molecules in the liquid phase is restricted to averaging methods or theory due to the dynamic nature of solvation processes. In order to overcome this problem, we present the formation of a two dimensional solvent layer supported on a metal substrate, enabling us to study the structure of solvated molecules in real space by the means of low-temperature scanning tunneling microscopy (STM). To understand the interaction of single molecules with its solvent, we coadsorbed the bidentate ligand molecule C75H51N3O and chloroform on a Ag(111) single crystal surface by the means of atomic layer injection, followed by cooling to 5 K. The STM results reveal the molecule in three different conformations embedded within the 2D chloroform layer. In addition, the structure of the solvent layer is disturbed compared to the ordered structure of pure chloroform on Ag(111). The significance of these results with regard to solvation will be discussed in this contribution.