In Situ Functionalization and PEO Coating of Iron Oxide Nanocrystals Using Seeded Emulsion Polymerization

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• 作者：Hauke Kloust ; Christian Schmidtke ; Artur Feld ; Theo Schotten ; Robin Eggers ; Ursula E. A. Fittschen ; Florian Schulz ; Elmar P枚selt ; Johannes Ostermann ; Neus G. Bast煤s ; Horst Weller
• 刊名：Langmuir
• 出版年：2013
• 出版时间：April 16, 2013
• 年：2013
• 卷：29
• 期：15
• 页码：4915-4921
• 全文大小：320K
• 年卷期：v.29,no.15(April 16, 2013)
• ISSN：1520-5827

文摘

Herein we demonstrate that seeded emulsion polymerization is a powerful tool to produce multiply functionalized PEO coated iron oxide nanocrystals. Advantageously, by simple addition of functional surfactants, functional monomers, or functional polymerizable linkers鈥攕olely or in combinations thereof鈥攄uring the seeded emulsion polymerization process, a broad range of in situ functionalized polymer-coated iron oxide nanocrystals were obtained. This was demonstrated by purposeful modulation of the zeta potential of encapsulated iron oxide nanocrystals and conjugation of a dyestuff. Successful functionalization was unequivocally proven by TXRF. Furthermore, the spatial position of the functional groups can be controlled by choosing the appropriate spacers. In conclusion, this methodology is highly amenable for combinatorial strategies and will spur rapid expedited synthesis and purposeful optimization of a broad scope of nanocrystals.