title: Frontiers in polymer chemistry.
abstract: The article shows how the initial concept of Staudinger on linear macromolecules was expanded topologically by increasing the cross-section diameter of polymer chains and by introducing sheet polymers with planar rather than the commonly known linear repeat units. The two concrete projects addressed are the synthesis of dendronized and of two-dimensional polymers. It is explained how these novel macromolecules were achieved and which obstacles had to be overcome but also where these frontiers in polymer chemistry might lead to new insights in polymer science in general and novel applications in particular. The article also provides insights into analytical issues because both target macromolecules are in an extraordinarily high molar mass range and contrast/sensitivity issues can turn rather serious in particular for the two-dimensional polymers.
authors.affiliation: Laboratory of Polymer Chemistry Department of Materials ETH Zurich, HCI J 541 Wolfgang Pauli Strasse 10, CH-8093 Zürich, Switzerland. ads@mat.ethz.ch.
authors.forename: A Dieter
authors.initials: AD
authors.lastname: Schlüter