Hermes JP, Sander F, Fluch U, Peterle T, Thompson D, Urbani R, Pfohl T, Mayor M

2012

September

Journal of the American Chemical Society

Monofunctionalized gold nanoparticles stabilized by a single dendrimer form dumbbell structures upon homocoupling.

Published

()

134

36

14674

14677

The assembly of dumbbell structures as organic-inorganic hybrid materials is presented. Gold nanoparticles (NPs) with a mean diameter of 1.3 nm were synthesized in very good yields using a stabilizing dendrimer based on benzylic thioether subunits. The extended dendritic ligand covers the NP surface and contains a peripheral protected acetylene, providing coated and monofunctionalized NPs. These NPs themselves can be considered as large molecules, and thus, applying a wet-chemical deprotection/oxidative acetylene coupling protocol exclusively provides dimers of NPs interlinked by a diethynyl bridge. The concept not only enables access to novel organic/inorganic hybrid architectures but also promises new approaches in labeling technology.

10.1021/ja306253t