Formation of PVP-protected metal nanoparticles in DMF

被引：524

作者：

Pastoriza-Santos, I ^{[1
]}

Liz-Marzán, LM ^{[1
]}

机构：

[1] Univ Vigo, Dept Quim Fis, Vigo 36200, Spain

来源：

LANGMUIR | 2002年 / 18卷 / 07期

关键词：

D O I：

10.1021/la015578g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Poly(vinylpyrrolidone) (PVP) is a polymer capable of complexing and stabilizing Ag and Au nanoparticles formed through the reduction of Ag+ or AuCl4- ions with N,N-dimethylformamide. The reduction can be efficiently performed both at reflux and under microwave irradiation, but each of these methods leads to different nanoparticle morphology and colloid stability. The use of microwave irradiation provides an extra degree of control of the reduction process. The use of PVP with different polymer chain lengths leads to particles with similar sizes though with a different degree of stability. The colloids are also stable in ethanol for months, but only marginally stable in water.

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页码：2888 / 2894

页数：7

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