Au–Fe₃O₄ Dumbbell Nanoparticles as Dual‐Functional Probes

Heavy lifting: Dumbbell-shaped Au–Fe3O4 nanoparticles are made biocompatible and suitable for attachment to A431 cells. The particles are magnetically and optically active and are useful for simultaneous magnetic and optical detection (see picture). The Au–Fe3O4 nanoparticles are promising as a new type of multifunctional probe for diagnostic and therapeutic applications. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z704392_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.