Dresden 2026 – scientific programme
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O: Fachverband Oberflächenphysik
O 45: Organic molecules on inorganic substrates: Adsorption and growth – Poster
O 45.4: Poster
Tuesday, March 10, 2026, 14:00–16:00, P2
Landing-Energy-Controlled Surface Conformation of Electrosprayed Foldamer Molecules on Au(111) — •Jue Wang1, Dennis Meier1,2, Shengming Zhang1, Patrick Lawes1, Pengfei Zhao1, Jinhua Wang3, Victor Maurizot3, Andreas Walz1,4, Annette Huettig1,4, Hartmut Schlichting1,4, Anthoula C. Papageorgiou1,5, Joachim Reichert1, Ivan Huc6,7, and Johannes V. Barth1,7 — 1TU Munich, DE — 2Tufts University, US — 3CNRS, Univ. Bordeaux, FR — 4pureions GmbH, Gilching, DE — 5National and Kapodistrian University of Athens, GR — 6LMU Munich, DE — 7Cluster of Excellence e-conversion, DE
Preserving the structural integrity of biomimetic foldamers upon surface deposition is essential for their integration into functional molecular architectures. In this study, we investigate the electrospray ion beam deposition of foldamer molecules in ultra-high vacuum and examine how their conformation depends on the mean landing energy during deposition. With a low mean landing energy of about 0.6 eV, intact foldamers are observed on the surface. Higher landing energies predominantly result in unfolded molecules. The unfolded conformation are further accessible by annealing of the adsorbed folded molecules. These results highlight the importance of soft-landing conditions to maintain hydrogen bond-stabilized architectures on surfaces, offering a model platform for studying the structure-function relationship of surface-supported thermolabile biomolecules
Keywords: electrospray ionization; scanning tunneling microscopy; foldamer molecules; landing energy; adsorption