Regensburg 2016 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 64: Oxides and Interfaces: Adsorption II
O 64.8: Vortrag
Mittwoch, 9. März 2016, 16:45–17:00, H6
On-surface generation and imaging of reactive intermediates by atomic force microscopy — •Niko Pavliček1, Bruno Schuler1, Sara Collazos2, Nikolaj Moll1, Dolores Pérez2, Enrique Guitián2, Gerhard Meyer1, Diego Peña2, and Leo Gross1 — 1IBM Research–Zurich, 8803 Rüschlikon, Switzerland — 2CIQUS and Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
Atomic force microscopy with functionalized tips allows imaging of the chemical structure of surface-adsorbed molecules [1].
Recently, we applied this method to investigate arynes, a class of reactive intermediates, which are involved in many chemical transformations [2]. Usually, their characterization is a great challenge because of short lifetimes and high reactivities. Here, we demonstrate the generation and characterization of individual polycyclic aryne molecules on an ultrathin insulating film by means of combined low-temperature scanning tunneling and atomic force microscopy. We also show that the aryne reactivity is preserved at cryogenic temperatures.
[1] L. Gross, F. Mohn, N. Moll, P. Liljeroth, and G. Meyer, Science 325, 1110 (2009).
[2] N. Pavliček, B. Schuler, S. Collazos, N. Moll, D. Pérez, E. Guitián, G. Meyer, D. Peña, and L. Gross, Nature Chem. 7, 623 (2015).