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Direct coprecipitation route to monodisperse dual-functionalized magnetic iron oxide nanocrystals without size selection
作者:Li, Zhen; Tan, Bien; Allix, Mathieu; Cooper, Andrew I.; Rosseinsky, Matthew J.
關鍵字:Nanoparticles
論文來源:期刊
具體來源:Small (2008), 4(2), 231-239.
發表時間:2008年

Water-sol. monodisperse superparamagnetic Fe3O4 nanocrystals decorated with two distinct functional groups are prepd. in a single-step procedure by injecting iron precursors into a refluxing aq. soln. of a polymer ligand, trithiol-terminated poly(methacrylic acid) (PMAA-PTTM), bearing both carboxylate and thiol functionalities.  The ratio of carboxylic acid groups in the polymer-protecting ligand to the iron precursors plays a key role in detg. the particle size and particle size distribution.  The surface functionalities of the ligands allow post-synthesis modification of the materials to produce water-sol. fluorescent magnetic nanocrystals. 

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