Charge Transport through Perylene Bisimide Molecular Junctions at Electrified Solid/Liquid Interfaces III

• Applicants: Professor Dr. Thomas Wandlowski (†); Professor Dr. Frank Würthner
• Subject Area: Experimental Condensed Matter Physics ; Solid State and Surface Chemistry, Material Synthesis
• Term: from 2006 to 2014
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 25125815

Charge transport and switching in metal¿molecule¿metal junctions will be investigated between a scanning tunnelling microscope tip and a metal substrate in electrolyte containing sample molecules. Our target molecules represent custom-designed molecular rods composed of redox-active perylene bisimide (PBI) electrophores bearing tailored spacer units and anchor groups. By tuning the Fermi levels of the (nano-)electrodes relative to energy levels of the redox molecules we aim to study and to control the electron transport through single molecules and explore concepts of redox-gated molecular nanostructures in an electro-chemical environment. The project will provide unique new insight into electron transport processes in single molecules which are triggered by electrical stimuli with potential applications towards molecular redox switches at electrified solid¿liquid interfaces.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1243: Quantum Transport at the Molecular Scale
• International Connection: Switzerland