Martedì 2 luglio 2024 - Ore 15:00 - Aula 22
Dott. Filippo Giovanni Fabozzi
Department of Chemistry & Center for the Science of Materials Berlin, Humboldt-Universität zu Berlin (Germany)
  Seminario  

Scanning Probe Microscopies, such as Scanning Tunneling Microscopy (STM), are crucial tools for visualizing phenomena on flat surfaces due to their exceptional lateral resolution. Despite their capabilities, fully understanding and controlling nanoscale processes remains a significant challenge in surface science. In this context, STM at the solid-liquid interface not only enables imaging of 2D nanoarchitectures with molecular precision but also initiates and controls chemical and physical processes in the second dimension. We demonstrate how rational molecular design and activation methods influence the supramolecular organization of building blocks, facilitating the creation of novel π-conjugated 2D polymers. Additionally, we show how the electric field applied by the STM tip can precisely control conformational changes in molecular 2D crystal structures, enabling nanoscale control of molecular Moiré Patterns. Lastly, we introduce a strategy combining self-assembly with light irradiation to control photochemical reactions of non-symmetric stilbene derivatives. This interdisciplinary approach highlights STM's pivotal role in understanding and manipulating fundamental surface phenomena, advancing the field of nanoscience and nanotechnology.