Dresden 2020 – scientific programme

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O: Fachverband Oberflächenphysik

O 111: Nanostructured Surfaces and Thin Films II: 1D and 2D Systems (joint session O/CPP)

O 111.9: Talk

Thursday, March 19, 2020, 17:00–17:15, WIL B321

Supramolecular nanopatterns of arylenes and arylene-alkynylenes: Addressing the third dimension — Georgiy Poluektov, Tristan J. Keller, Joshua Bahr, David A. Hofmeister, Anna Krönert, Anna Jochemich, Dirk Laux, Daniel Kalle, Sebastian Henzel, Steven Becker, •Stefan-Sven Jester, and Sigurd Höger — Kekulé-Institut für Organische Chemie und Biochemie der Universität Bonn, Gerhard-Domagk-Str. 1, 53121 Bonn, Germany

Arylenes and arylene-alkynylenes that carry long alkoxy side chains physisorb at the solid/liquid interface on graphite (HOPG). The resulting two-dimensional (2D) supramolecular nanopatterns have periodicities in the order of 3 nm to 10 nm and are in situ imaged by scanning tunneling microscopy (STM) with submolecular resolution. The electronic and mechanic decoupling of the active units in such systems from (i) the substrate surface and (ii) adjacent species within the nanopatterns is essential for a single-molecule functionality similar to systems in a solution. Here, we report on bicyclophanes as well as shape-persistent stars and macrocycles, all carrying anchor groups that point along the surface normal.