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Surface-Modified Superparamagnetic Iron-Oxide Nanoparticles

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Summary.

The generation of superparamagnetic iron-oxide nanoparticles bearing fluorescent ligands is described. γ-Fe2O3 nanoparticles (radius ∼4 and 8 nm) bearing octylamine or oleic acid as ligands were prepared by hydrothermal synthesis starting from Fe-cupferron and iron pentacarbonyl, respectively. Ligand exchange proceeds with 1,2-diols bearing ω-azido or ω-bromo ligands at elevated temperatures. Subsequent nucleophilic substitution reaction, followed by 1,3-dipolar cycloaddition reactions with 2,4,6-trinitro-1-O-propargyl-benzene yields superparamagnetic iron-oxide nanoparticles with a fluoresecent ligand on their surface.

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Authors and Affiliations

  1. Lehrstuhl Makromolekulare Chemie, Institut f. Chemie, Martin-Luther Universität Halle-Wittenberg, Halle, Germany

    Wolfgang H. Binder & Harald C. Weinstabl

Authors
  1. Wolfgang H. Binder
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  2. Harald C. Weinstabl
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Correspondence to Wolfgang H. Binder.

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Binder, W., Weinstabl, H. Surface-Modified Superparamagnetic Iron-Oxide Nanoparticles. Monatsh. Chem. 138, 315–320 (2007). https://doi.org/10.1007/s00706-007-0617-2

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  • DOI: https://doi.org/10.1007/s00706-007-0617-2

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