Dresden 2026 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 67: 2D Materials beyond graphene: Growth, structure and substrate interaction – Poster (joint session O/TT)
TT 67.4: Poster
Mittwoch, 11. März 2026, 18:00–20:00, P2
Pt-doped borane nanomembranes — •Martha Frey1, Julian Picker1, Christof Neuman1, Jan Macháček2, Tomáš Baše2, and Andrey Turchanin1 — 1Friedrich Schiller University Jena, Institute of Physical Chemistry, Lessingstraße 10, 07743 Jena, Germany — 2The Czech Academy of Sciences, Institute of Inorganic Chemistry, 250 68 Husinec Rez, 1001, Czech Republic
Boranes are clusters of boron and hydrogen atoms that form three-dimensional, cage-like molecules. We have recently employed them as convenient starting precursors for synthesising two-dimensional (2D) carbon-free nanomembranes. In this study, we present the preparation and characterisation of the self-assembled monolayers (SAMs) of two thiolated syn-B18H22 clusters on silver substrates. Subsequently, these SAMs were cross-linked laterally to form boron nanomembranes (BNMs) via low-energy electron irradiation under ultra-high vacuum (UHV) conditions. We investigated the structural and chemical properties of these 2D nanomembranes using surface-sensitive techniques such as X-ray photoelectron spectroscopy (XPS) and scanning tunnelling microscopy (STM). Both the starting SAMs and the resulting boron nanomembranes exhibited reactivity toward Pt-containing complexes. While such reactivity was expected for the SAMs, it was particularly noteworthy that the BNMs also enabled the insertion of Pt atoms. This Pt-doping positions borane-derived SAMs and BNMs as a promising 2D platform for nanoscale catalytic studies.
Keywords: self-assembled monolayers; nanomembranes; electron-induced cross-linking; surface functionalization; Pt