Piotr Cyganik oral presentation (SN3-Thu4-2-1)
Molecule-substrate interface analysis by SIMS
1 Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
2 Maria Curie-Skłodowska University, Plac marii Curie-Skłodowskiej 5, 20-031 Lublin, Poland
3 Goethe University, Max-von-Laue Str. 7, 60438 Frankfurt am Main, Germany
The interface between organic molecule and metal electrode is of fundamental importance for many nanotechnological applications including molecular electronics. Unfortunately, it remains extremely difficult in experimental analysis and theoretical predictions limiting thus our efforts in purposeful design of related devices. Therefore, new experimental approaches in exploring molecule-substrate interface stability are urgently needed to provide systematic and general observations which could in turn push forward theoretical models. In this presentation we demonstrate that static SIMS can play such a role for providing not only an alternative method for typical stability experiments but, more importantly, to reveal and explore in a very systematic way stability mechanisms which could not be analyzed so far by any other technique.
The experiments (SIMS) and calculations (DFT and MD) have been conducted using self-assembled monolayers (SAMs) which are considered as a model systems of thin organic films regarding both experiments and calculations. To address the issue of S-SIMS sensitivity towards stability of molecule-substrate interface we have selected homologous series of hybrid aromatic/aliphatic SAMs in general form of CH3-(C6H4)2-(CH2)n-S(Se)/Ag(Au) (n =2-6) where either S atom (BPnS) or Se atom (BPnSe) act as a head group binding molecule to the Au(111) or Ag(111) surface [1,2].
 Ossowski et al. „Oscillations in Stability of Consecutive Chemical Bonds Revealed by Ion-Induced Desorption” Angew. Chem. Int. Ed.2015, 54, 1336-1340.
 Ossowski et al. „ Relative Stability of Thiolate and Selenolate SAMs on Ag(111) Substrate Studied by Static SIMS – Oscillation in Stability of Consecutive Chemical Bonds” J. Phys. Chem. C, 2017, 121, 459-470.