Monofunctionalized Gold Nanoparticles Stabilized by a Single Dendrimer Form Dumbbell Structures upon Homocoupling

Jens Peter Hermes, Fabian Sander, Ulrike Fluch, Torsten Peterle, Damien Thompson, Raphael Urbani, Thomas Pfohl, Marcel Mayor

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)14674-14677
Number of pages4
JournalJournal of the American Chemical Society
Volume134
Issue number36
DOIs
Publication statusPublished - 12 Sep 2012
Externally publishedYes

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