Dresden 2020 – scientific programme

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DS: Fachverband Dünne Schichten

DS 15: Organic Thin Films, Organic-Inorganic Interfaces I (joint session DS/CPP)

DS 15.4: Talk

Tuesday, March 17, 2020, 10:15–10:30, CHE 91

Fabrication of metallic nanostructures via FEBIP on top of ultrathin organic membranes — •Alexander Wolfram, Christian Preischl, Elif Bilgilsoy, and Hubertus Marbach — Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander Universität Erlangen-Nürnberg, GER

We report a novel method to fabricate ultrathin organic membranes with metallic nanostructures. In a first step, clean iron nanostructures were prepared on a self-assembled-monolayer (SAM) of 1,1’,4’,1”-terphenyl-4-thiol (TPT) via Electron-Beam-Induced-Deposition (EBID) by using Fe(CO)5 as precursor.^[1] In a next step, the SAM is converted into a carbon nanomembrane (CNM) by using low energetic electron-induced crosslinking.^[2] In a third step, the membrane was then transferred onto SiO2 or a TEM grid. We demonstrate that the nanostructures maintain their shape and the membrane remains intact during the transfer. In this way, metallic nanostructures on a free-standing CNM can be fabricated. We also show the influence of the underlying substrate (Ag or Au) of the SAM and the associated wet chemical process on the appearance of the transferred nanostructures.

^[1] M. Walz et al., Angew. Chem. Int. Ed., 49 (2010) 4669 ^[2] A. Turchanin, A. Gölzhäuser, Advanced Materials, 28 (2016) 6075.