Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 12: Focus: Molecularly Functionalized Low-Dimensional Systems II - organized by Antonio Setaro, Carola Meyer, Aravind Vijayaraghvan and Matteo Mannini
CPP 12.4: Vortrag
Montag, 12. März 2018, 16:00–16:15, C 130
Electrical Characterization of Bis(terpyridine)ruthenium-Complex Functionalized Au-Nanoparticles in Heterometallic Nanoelectrode Gaps — •Max Mennicken1, Sophia Knecht2, Corinna Kaulen2, Ulrich Simon2, and Silvia Karthäuser1 — 1Peter Grünberg Institut (PGI-7), Forschungszentrum Jülich GmbH, Germany — 2Institut für Anorganische Chemie (IAC), RWTH Aachen University, Germany
Following the concept of integrating molecular electronic devices into traditional CMOS circuitry, molecularly functionalized metal nanoparticles (NP) are employed. Especially complexes of ruthenium with chelating terpyridine ligands exhibit interesting properties. They can act as a switch of constant length, based on a redox mechanism, addressed by electrical or optical pulses. The application of 1,4-bis(2,2’:6’,2”-terpyridin-4’-yl)benzol (BTP) ligands as a linear linking moiety allows the formation of Ru-BTP diads, triads or even longer molecular wires. Here, we use 15 nm Au-NP functionalized with 4’-(4-mercaptophenyl)-2,2’:6’2”-terpyridin (MPTP) and the corresponding (MPTP)2-ruthenium complex. We immobilized such Au-NP in between heterometallic nanoelectrode gaps consisting of AuPd and Pt. The resulting devices are characterized by SEM and transport measurements which are compared to estimations of the conductance through the respective molecules. Furthermore, the principle of growth of Ru-BTP based molecular wires is investigated by XPS measurements.