Dresden 2017 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 34: Poster session II

MM 34.38: Poster

Dienstag, 21. März 2017, 18:30–20:30, P4

Electron transport in nanoparticle networks — •Michael Deffner1, Florian Schulz2, Carmen Herrmann1, and Holger Lange21Institut für Anorganische und Angewandte Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Deutschland — 2Institut für Physikalische Chemie, Universität Hamburg, Grindelallee 117 20146 Hamburg, Deutschland

Gold nanoparticles (AuNPs) are a stable and easy-to-functionalize platform for different purposes such as medical imaging or sensor applications. AuNPs can be functionalized by straightforward ligand exchange for example with thiols or amines, which bond easily to the surface of the nanoparticle and can induce aggregation processes.

In order to systematically study the transport properties of gold nanoparticle clusters, in a first step the formation of networks and clusters of AuNPs are studied using biphenyl-4,4’-dithiol, p-terphenyl-4,4”-dithiol and 1,9-nonane-dithiol as molecular linkers.

Electron transport properties of these networks are studied using terahertz spectroscopy as well as transport calculations for single gold–molecule–gold junctions following the Landauer–Büttiker formalism. Within this approach, electron transport is described as a tunneling problem which can be solved using quantum chemical software.

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