| AVS 60th International Symposium and Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS1-ThA |
| Session: | Organic Layers on Surfaces |
| Presenter: | A. Terfort, University of Frankfurt, Germany |
| Authors: | A. Terfort, University of Frankfurt, Germany M. Zharnikov, University of Heidelberg, Germany P. Cyganik, Jagiellonian University, Poland |
| Correspondent: | Click to Email |
Self-assembled monolayers (SAM) became a very powerful tool in the materials sciences, biochemistry, and engineering. In particular SAMs of thiolates are reknown for their ease of formation, their stability and their high order. Nevertheless, not all thiols can form densely packed monolayers and for some cases even the best thiolate monolayers are not well ordered enough.
Based on the idea that a softer anchoring atom would fit better to the soft gold atoms (according to Pearson’s HSAB principle), we prepared a number of selenium-containing precursors and studied their assembly on gold (and in some cases on silver). Data obtained by surface infrared spectroscopy, different photo-electron spectroscopies, and STM hint on the formation of very stable monolayers with improved order.[1-4]
In this talk we will present the preparation methods for the starting materials and the respective monolayers, give details on the surface characterisation, and offer explanations for the superior behaviour of the selenolate SAMs.
References
[1] Szelągowska-Kunstman, K.; Cyganik, P.; Schüpbach, B.; Terfort, A. Phys. Chem. Chem. Phys.12, 4400-4406 (2010)
[2] Weidner, T.; Shaporenko, A.; Müller, J.; Schmid, M.; Cyganik, P.; Terfort, A.; Zharnikov, M. J. Phys. Chem C112, 12495–12506 (2008 )
[3] Cyganik, P.; Szelągowska-Kunstman, K.; Terfort, A.; Zharnikov, M. J. Phys. Chem C 112,15466-15473, (2008 )
[4] Shaporenko, A.; Müller, J.; Weidner, T.; Terfort, A.; Zharnikov, M. J. Am. Chem. Soc.129, 2232-2233 ( 2007 )