Goloverda Galina, Jackson Barry, Kidd Clayton, Kolesnichenko Vladimir
Xavier University of Louisiana, Department of Chemistry, New Orleans, LA 70125, USA.
J Magn Magn Mater. 2009 May 1;321(10):1372-1376. doi: 10.1016/j.jmmm.2009.02.041.
Colloidal nanoparticles of Fe(3)O(4) (4 nm) 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) + 2Fe(DEG)Cl(3) + 2H(2)O + 2OH(-) → Fe(3)O(4) + 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 α-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.
通过在母体醇（H₂DEG）溶液中对螯合的铁（II）和（III）二甘醇醇盐配合物进行高温水解，合成了Fe₃O₄（4纳米）的胶体纳米颗粒，且未使用封端配体或表面活性剂：[Fe(DEG)Cl₂]²⁻ + 2[Fe(DEG)Cl₃]²⁻ + 2H₂O + 2OH⁻ → Fe₃O₄ + 3H₂DEG + 8Cl⁻ 所得到的颗粒与不同的小分子多齿配体反应，并对所得加合物进行水胶体形成测试。羟基酸的羧基和α-羟基均参与与纳米颗粒表面的配位。这种配位对配体包覆的纳米颗粒抗水解稳定性起主要作用。
