SKM 2023 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 23: Poster II
MM 23.12: Poster
Dienstag, 28. März 2023, 18:15–20:00, P2/OG1+2
Electronic Properties of Self-assembled 1D Gold Nanoparticle Chains — •Stefan M. Schupp1, David J. Schupp2, Emil Schwarz2, Rebecca Köser2, Helmut Cölfen2, and Lukas Schmidt-Mende1 — 1Department of Physics, University of Konstanz, Germany — 2Department of Chemistry, University of Konstanz, Germany
1D nanoparticle (NP) assemblies exhibit unique electronic properties due to their directional charge transport. In addition, the usage of stabilizing ligands enables a further possibility to add new functionalities and tune their conductivities. However, the assembly and characterization of 1D NP chains remains a challenge to this day. Here, we present a study on thiol-induced dipoles on gold (Au) nanoparticle surfaces which result in chain-like assemblies in solution under ambient conditions. Thereby, 1D assemblies of 40 nm Au-NPs with different shapes and thiolated ligands could be achieved. Afterwards, a developed transfer technique allows the electrical characterization of individual 1D NP chains through prefabricated gold electrodes. In this configuration, the temperature-dependent resistance of different NP assemblies is investigated to understand the underlying conduction mechanisms. With the gained knowledge it should be possible to generate 1D Au NP chains with controllable electronic conductivities for future applications.