Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 89: Metal substrates: Adsorption of organic / bio molecules V
O 89.4: Vortrag
Freitag, 30. März 2012, 11:15–11:30, A 053
Supramolecular organization and subsequent interlinking of biphenyl derivatives on metal surfaces — •Fei Song1, Tuan Anh Pham1, Serpil Boz2, Umut Soydaner3, Marcel Mayor3, and Meike Stöhr1 — 1Zernike Institute for Advanced Materials, University of Groningen, the Netherlands — 2Department of Physics, University of Basel, Switzerland — 3Department of Chemistry, University of Basel, Switzerland
The combination of their almost infinite structural diversity and unique self-assembly properties makes molecules ideal building blocks for tailor-made materials [1,2]. However, most of such thermodynamically controlled structures are reversible. Therefore, structures with higher stability and improved conductive properties are essential. In this work, a unique concept to control both the molecular self-assembly and the subsequent intermolecular coupling was utilized through the usage of protecting groups.
Herein, biphenyl derivatives with different protecting groups were synthesized and investigated on Ag(111) with STM and XPS before and after annealing. The protecting groups can be split off during the annealing step and the deprotected monomers were found to interlink into polymeric structures. By careful design of the organic monomers, control over reactivity and the size of polymeric structures is achieved.
[1] S. Boz et al., Angew. Chem. Int. Ed. 48 (2009) 3179
[2] J. Lobo-Checa, et al., Science. 325 (2009) 300