Bifunctional Fe3O4–Ag Heterodimer Nanoparticles for Two‐Photon Fluorescence Imaging and Magnetic Manipulation

Fe3O4–Ag heterodimer nanocomposites of tunable sizes are synthesized with high yield under mild conditions, without the loss of high magnetic moment. A ligand-exchange scheme is devised utilizing the bifunctionality of the heterodimer system to render the nanocomposite soluble in aqueous solutions. Cells labeled with the heterodimer nanoparticles can be magnetically manipulated and imaged with two-photon fluorescence microscopy. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. 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.