Synthesis of ultrasmall magnetic iron oxide nanoparticles and study of their colloid and surface chemistry

被引：47

作者：

Goloverda, Galina ^{[1
]}

Jackson, Barry ^{[1
]}

Kidd, Clayton ^{[1
]}

Kolesnichenko, Vladimir ^{[1
]}

机构：

[1] Xavier Univ, Dept Chem, New Orleans, LA 70125 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 10期

关键词：

Magnetic oxide nanoparticles; Synthesis; Colloid and surface chemistry; Dynamic light scattering; Magnetization; Hydroxycarboxylic acid; NANOCRYSTALS; CYCLODEXTRIN; REACTIVITY; DEXTRAN; AGENTS; FE3O4;

D O I：

10.1016/j.jmmm.2009.02.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Colloidal nanoparticles of Fe3O4 (4nm) were synthesized by high-temperature hydrolysis of chelated iron (II) and (III) diethylene glycol alkoxide complexes in a solution of the parent alcohol (H(2)DEG) without using capping ligands or surfactants:[Fe(DEG)Cl-2](2-)+2[Fe(DEG)Cl-3](2-)+2H(2)O+2OH(-)-> Fe3O4+3H(2)DEG+8Cl(-) The obtained particles were reacted with different small-molecule polydentate ligands, and the resulting adducts were tested for aqueous colloid formation. Both the carboxyl and a-hydroxyl groups of the hydroxyacids are involved in coordination to the nanoparticles' surface. This coordination provides the major contribution to the stability of the ligand-coated nanoparticles against hydrolysis. (C) 2009 Elsevier B.V. All rights reserved.

引用

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页码：1372 / 1376

页数：5

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