Preparation and thermally promoted ripening of water-soluble gold nanoparticles stabilized by weakly physisorbed ligands

被引：26

作者：

Griffin, Fionn ^{[1
]}

Fitzmaurice, Donald ^{[1
]}

机构：

[1] Natl Univ Ireland Univ Coll Dublin, Dept Chem, Dublin 4, Ireland

来源：

LANGMUIR | 2007年 / 23卷 / 20期

关键词：

D O I：

10.1021/la061261a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here, we report on a facile method for the preparation of an aqueous dispersion of 3.6 nm gold nanoparticles electrostatically stabilized by a weakly physisorbed ligand, namely, 4-(dimethylamino)pyridine (DMAP). The nature and extent of the interaction of this ligand with the surface of a gold nanciparticle has been examined. We also report on the thermally promoted ripening of these nanoparticles under mild conditions to yield a dispersion of 11.3 nm gold nanoparticles. The role of the weakly physisorbed DMAP ligand in facilitating thermally promoted ripening under mild conditions has also been examined.

引用

页码：10262 / 10271

页数：10

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