Dresden 2011 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 23: Poster: Semicrystalline Polymers, Polymer Crystallization and Self-Assembly

CPP 23.12: Poster

Tuesday, March 15, 2011, 18:00–20:00, P2

Oligomers and Cyclooligomers of Rigid Phenylene-Ethynylene-Butadiynylenes: Synthesis and Self-Assembled Monolayers — •Stefan-Sven Jester, Natalia Shabelina, Stephan M. Le Blanc, and Sigurd Höger — Rheinische Friedrich-Wilhelms-Universität Bonn, Kekulé-Institut für Organische Chemie und Biochemie, Gerhard-Domagk-Str. 1, 53121 Bonn

Starting from the same bisacetylene, different reaction conditions (palladium or copper catalysis) selectively yield cyclic or acyclic oligomers with n=2-6 linked by freely rotating corner units. STM images of self-assembled monolayers reveal the difference in the adsorption behavior of the acyclic and cyclic oligomers.