Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 48: Two-dimensional Materials IV (joint session HL/CPP)

HL 48.13: Vortrag

Freitag, 5. April 2019, 12:45–13:00, H36

Photoactive molecular nanosheets with 1 nm thickness — •Maria Küllmer¹, Felix Herrmann-Westendorf^1,3, Stefan Götz², Christof Neumann¹, Patrick Endres², Andreas Winter², Ulrich Sigmar Schubert^2,4, Benjamin Dietzek^1,3,4, and Andrey Turchanin^1,4 — 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