Berlin 2012 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
O: Fachverband Oberflächenphysik
O 30: Focussed session: Functional molecules at surfaces I
O 30.6: Talk
Tuesday, March 27, 2012, 12:15–12:30, A 053
STM investigations of functional platform adlayers on Au(111) surfaces — •Sonja Kuhn1, Frauke Claußen1, Jiyapa Sripirom2, Ulrich Jung1, Jens Kubitschke3, Sandra Ulrich3, Albert Schulte2, Rainer Herges3, and Olaf Magnussen1 — 1Institut für Experimentelle und Angewandte Physik, Christian- Albrechts-Universität zu Kiel, Leibnizstr. 19, 24118 Kiel, Germany — 2Biochemistry-Electrochemistry Research Unit, Suranaree University of Technology 30000, Thailand — 3Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24098 Kiel, Germany
For preparation of functionalized molecular adlayers, we have introduced the platform approach, where derivatives of the Triaza- [1,2,3] or Trioxatriangulenium [4] ions are used, which can be functionalized at the central carbon atom to control orientation and spacing of the functionality as well as at side positions to control the steric demand. Here, we present STM studies of these platform adlayers on Au(111) surfaces in air and in electrochemical environment [1,2,4]. These compounds form highly ordered hexagonal structures and thus are important example systems exhibiting a high degree of lateral and vertical order. We will also present in situ STM studies by a novel kind of carbon fiber tips, which exhibit superior electrochemical properties [5].
[1] Baisch et al., J. Am. Chem. Soc. (2009), 131, 442, [2] Kuhn et al., PCCP (2010), 12, 4481, [3] Kubitschke et al., Eur. J. Org. Chem. (2010), 5041, [4] Kuhn et al., Chem. Commun., 2011, 47, 8880-8882, [5] J. Sripirom et al., Carbon, 49, 2011, H. 7, 2402-2412