Hydrophobic Nanocrystals Coated with an Amphiphilic Polymer Shell:  A General Route to Water Soluble Nanocrystals

Teresa Pellegrino(University of Bari Aldo Moro), Liberato Manna(University of Bari Aldo Moro), Stefan Kudera(University of Bari Aldo Moro), Tim Liedl(Ludwig-Maximilians-Universität München), Dmitry S. Koktysh(University of Bari Aldo Moro), Andrey L. Rogach(University of Bari Aldo Moro), Simon Keller(Ludwig-Maximilians-Universität München), Joachim O. Rädler(University of Bari Aldo Moro), Giovanni Natile(Ludwig-Maximilians-Universität München), Wolfgang J. Parak(Ludwig-Maximilians-Universität München)
Nano Letters
March 26, 2004
Cited by 1,048

Abstract

A general strategy is described which allows for transferring hydrophobically capped nanocrystals from organic to aqueous solution by wrapping an amphiphilic polymer around the particles. In particular, high quality CoPt3, Au, CdSe/ZnS, and Fe2O3 nanocrystals have been water-solubilized in this way. Analysis with transmission electron microscopy, gel electrophoresis, and fluorescence correlation spectroscopy demonstrates that monodispersity of the particles is conserved upon phase transfer to aqueous solution.


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