Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 31, Issue 18, Pages 1608-1615Publisher
WILEY-BLACKWELL
DOI: 10.1002/marc.201000193
Keywords
click chemistry; dopamine; magnetic nanoparticles; poly(ethylene oxide)
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The functionalization of magnetite (Fe3O4) nanoparticles with dopamine-derived clickable biomimetic anchors is reported. Herein, an alkyne-modified catechol-derivative is employed as the anchor, as i) the catechol-functional anchor groups possess irreversible covalent binding affinity to Fe3O4 nanoparticles, and ii) the alkyne terminus enables further functionalization of the nanoparticles by the grafting-onto approach with various possibilities offered by 'click' chemistry. In the present work, azido-end group functionalized Rhodamine and poly(ethylene glycol) (PEG) are utilized to coat the iron oxide nanoparticles to make them fluorescent and water soluble.
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