Berlin 2024 – scientific programme

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DS: Fachverband Dünne Schichten

DS 10: Thin Film Application

DS 10.5: Talk

Wednesday, March 20, 2024, 16:00–16:15, A 060

Tailoring gas permeation of carbon nanomembranes via the structure of molecular precursors — •Daniel Hüger¹, Anna-Laurine Gaus², Vladislav Stroganov¹, Julian Picker¹, Christof Neumann¹, Max von Delius², and Andrey Turchanin¹ — ¹Friedrich Schiller University Jena, Jena, Germany — ²University of Ulm, Ulm, Germany

Carbon nanomembranes (CNMs) are molecular nanosheets with a thickness of about 1 nm. They are synthesised via electron irradiation of aromatic self-assembled monolayers (SAMs), which enables to flexibly tailor their physical and chemical properties by choice of the molecular precursors. Among others, the permeation properties of CNMs make them promising for applications in energy storage and conversion. Here we present a study of the permeation of helium and water vapours through a series of CNMs synthesised from pyrene-1-thiol, anthracene-2-thiol, phenanthrene-2-thiol and 4'-nitro-4-biphenylthiol SAMs. We demonstrate that the introduction of functional groups on the CNM surface and tuning the precursors' structure significantly impact the permeation properties and therefore the selectivity of the permeating species.

Keywords: Carbon Nanomembranes; 2D Materials; Permeation; Gas Separation; Self-Assembled Monolayers