Amphiphilic and magnetic behavior of Fe3O4 nanocrystals.
Amphiphilic and magnetic behavior of Fe3O4 nanocrystals.
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DOI：
10.1039/b917276a
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发表时间：
2010-02
期刊：
影响因子：
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通讯作者：
W. Thiessen;A. Dubavik;V. Lesnyak;N. Gaponik;A. Eychmüller;T. Wolff
中科院分区：
文献类型：
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作者：
W. Thiessen;A. Dubavik;V. Lesnyak;N. Gaponik;A. Eychmüller;T. Wolff
利用专门合成的含有活性基团的聚合物稳定剂(poly-4-vinylpyridine-co-acrylamidoethylamine-co-polyethyleneglycol-co-polyethyleneglycolic酸，制备了平均尺寸为13 nm的Fe(3)O(4)(磁铁矿)纳米晶。聚合物壳层使纳米晶具有两亲性，即它们可溶于戊醇、水和二氯甲烷，并以三相体系分布在这三种溶剂中。Fe(3)O(4)纳米晶具有众所周知的典型磁性。
Fe(3)O(4) (magnetite) nanocrystals with an average size of 13 nm were prepared using a specially synthesized polymeric stabilizer (poly-4-vinylpyridine-co-acrylamidoethylamine-co-polyethyleneglycol-co-polyethyleneglycolic acid) that bears reactive groups for further functionalization. The polymer shell made the nanocrystals amphiphilic, i.e. they are soluble in pentanol, water and dichloromethane, and they distribute over the three solvents in a three phase system. The Fe(3)O(4) nanocrystals exhibited the well-known and typical magnetic properties.