Inorganic & Coordination Chemistry, Poster
IC-139

Periodic charging of individual molecules and charge patterns of an assembly of aromatic heterocyclic molecules on the surface

S. Liu2, N. Kocić3, X. Liu2, P. Weiderer3, S. Decurtins2, J. Repp3*
1Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland, 2Department of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland , 3Institute of Experimental and Applied Physics, University of Regensburg, 93053 Regensburg, Germany

Single-electron charging is critical for many areas of nanoscience. Charging and discharging events can be detected, i.e. in the force and in the frequency shift in atomic force microscopy. In a combined STM/FM-AFM study, the periodic charging of individual molecules assembled on a Ag(111) substrate was investigated [1].The molecule under investigation, 1,6,7,12-tetraazaperylene (tape), is a planar heterocyclic compound (Figure 1). The incorporated hydrogen bonding capacity stabilizes on surface a two-dimensional molecular assembly. Interestingly, different charge patterns on the 1 nm scale can be created and addressed in a controlled way on the Ag(111) substrate.

[1] Nemanja Kocić, Peter Weiderer, Stefan Keller, Silvio Decurtins, Shi-Xia Liu,  Jascha Repp, Nano Letter, 2015, 15, 4406–4411.