Speaker
Description
Over the past decade, On-Surface Synthesis rapidly emerged as a successful bottom-up method for synthesizing atomically precise, low-dimensional nanomaterials with tailored electronic, magnetic, and optical properties. A crucial yet unachieved goal toward single-molecule devices is the integration of reversible molecular bistability.
Here, we discuss first experimental results for an organic complex (DAE). DAE functions as a molecular switch and exhibits in solution a light-controlled ring-opening/ring-closing mechanism. Thereby, conductivity and spin-spin coupling are modulated. In our study, we investigate DAE molecules functionalized for coupling reactions. DAE molecules are prepared on different substrates (Ag(111),Au(111)) and their growth behavior and electronic characteristics are examined in dependence on the ligand structure, as revealed by Scanning Tunneling Microscopy (STM) and Scanning Tunneling Spectroscopy (STS).
Keywords: DAE, bistability, STM/STS, molecular switch