Regensburg 2022 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: 2D Materials 3 (joint session CPP/DS)

CPP 11.2: Talk

Monday, September 5, 2022, 17:30–17:45, H38

Permeation of gases through molecularly thin carbon nanomembranes — •Vladislav Stroganov¹, Daniel Hüger¹, Tabata Nöthel¹, Christof Neumann¹, Uwe Hübner², Michael Steinert¹, Monika Kruk³, Piotr Cyganik³, and Andrey Turchanin¹ — ¹Friedrich-Schiller University Jena, Jena, Germany — ²Leibniz Institute of Photonic Technology, Jena, Germany — ³Jagiellonian University, Kraków, Poland

Atomically thin carbon nanomembranes (CNMs) are promising candidates for next generation filtration and gas separation technologies. However, the gas permeation mechanism through CNMs is not fully understood yet. To improve this knowledge, we investigated permeation of helium, deuterium, water vapor and other gases through a series of CNMs under different conditions. The CNMs were synthesized from biphenyl substituted carboxylic acids on silver substrate C₆H₅−C₆H₄−(CH₂)_n−COO|Ag, with different lengths of aliphatic linker n = 2 - 6. A CNM based on terphenyl thiol (TPT) was used as a well-known reference system. We demonstrated that even the smallest variation in the structure of the molecular precursor lead to significant change of the permeation properties.