Berlin 2024 – scientific programme

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O: Fachverband Oberflächenphysik

O 92: Nanostructures at Surfaces II

O 92.5: Talk

Thursday, March 21, 2024, 16:00–16:15, MA 042

On-surface Synthesis of Tunable Dinuclear Organometallic Networks — •Wenchao Zhao, Nan Cao, Mathias O. Senge, Ethem Akturk, Johannes V. Barth, and Biao Yang — Physics Department E20, School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany

Engineering organometallic networks (OMNs) obtains great efforts due to their potential applications in catalysis, optoelectronic devices etc[1]. Dinuclear metal complexes have multifunctional properties with their tunable structure and hence various applications in the field of OLEDs, chemosensors and smart materials[2]. The relatively complex structure makes it difficult to form thin films for advanced devices application. Therefore, on-surface synthesis of dinuclear organometallic networks serves as a powerful strategy to directly obtain the thin functional layers. Herein, with a designed bi-component precursor and O2-mediated treatment, we manage to construct ordered Ag-Ag dinuclear OMNs containing C-Ag-N bridging linkers. Moreover, it is feasible to tune the the thermal stability and electronic property by replacing the dinuclear metal centers via post metal-exchange method, transferring to Cu-Cu dinuclear with C-Cu-N linkages. This advanced strategy will greatly expand the diversified synthesis and application of dinuclear organometallic supramolecular materials. Reference. 1. D. Ecija et al., Acc. Chem. Res. 2018, 51, 365-375. 2. J. Lv et al., Nature 2023, 622, 754-760.

Keywords: On-surface synthesis; Organometallic; Dinuclear metal; Metal-exchange; STM