Gold Nanoparticles with Covalently Attached Polymer Chains This work was supported by the Deutsche Forschungsgemeinschaft and by the Fonds der Chemischen Industrie. We are grateful to Prof. Dr. H. Weller, Institut für Physikalische Chemie der Universität Hamburg, for the transmission electron microscopy pictures and to Prof. Dr. M. Möller and Dipl.-Chem. Bernd Tartsch, Abteilung Organische Chemie III der Universität Ulm, for the scanning forcce microscopy investigations.

Abstract
“Living”/controlled radical polymerization according to the atom transfer radical polymerization mechanism is a suitable method for the graft‐polymerization of nanoparticles (see scheme). With this method, in which the core nanoparticles remain unchanged, the chain length and therefore the thickness of the polymer shell can be adjusted.