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HL: Fachverband Halbleiterphysik
HL 48: Two-dimensional Materials IV (joint session HL/CPP)
HL 48.13: Talk
Friday, April 5, 2019, 12:45–13:00, H36
Photoactive molecular nanosheets with 1 nm thickness — •Maria Küllmer1, Felix Herrmann-Westendorf1,3, Stefan Götz2, Christof Neumann1, Patrick Endres2, Andreas Winter2, Ulrich Sigmar Schubert2,4, Benjamin Dietzek1,3,4, and Andrey Turchanin1,4 — 1Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena — 2Institute of Organic Chemistry and Makromolecular Chemistry (IOMC), Friedrich Schiller University Jena, 07743 Jena — 3Leibniz Institute of Photonic Technology e. V., 07745 Jena — 4Center for Energy and Environmental Chemistry Jena (CEEC Jena), 07743 Jena
Artificial photocatalytic systems play an important role in the development of novel energy sources. Functional incorporation of molecular catalysts into two-dimensional (2D) soft matter matrixes is a prerequisite towards the realization of the artificial leaf systems. Here we present 1 nm thick photoactive molecular nanosheets - Carbon Nanomembranes (CNMs) - generated by electron irradiation induced crosslinking of self-assembled photocatalytic ruthenium-(II)-complexes on gold substrates. We characterize the chemical and structural properties of these molecular 2D systems using high-resolution X-ray photoelectron and surface enhanced Raman spectroscopy in combination with atomic force and scanning electron microscopy. We employ photothermal deflection spectroscopy to characterize the adsorption band of the formed free-standing photoactive CNMs and to compare it with the characteristics of the pristine ruthenium-(II)-complexes