The preparation of highly antimicrobial silver nanoparticles by an organometallic approach.
- Fernández, E.J. 1
- García-Barrasa, J. 1
- Laguna, A. 2
- López-De-Luzuriaga, J.M. 1
- Monge, M. 1
- Torres, C. 1
-
1
Universidad de La Rioja
info
-
2
Instituto de Nanociencia y Materiales de Aragón
info
ISSN: 0957-4484
Ano de publicación: 2008
Volume: 19
Número: 18
Tipo: Artigo
Outras publicacións en: Nanotechnology
Proxectos relacionados
Resumo
Silver nanoparticles of small size with a high surface to volume ratio have been prepared using an organometallic approach. For this, the complex NBu 4[Ag(C6F5)2] has been treated with AgClO4 in a 1:1 molar ratio, giving rise to the nanoparticle precursor [Ag(C6F5)] in solution. Addition of one equivalent of hexadecylamine (HDA) and 5 h of reflux in toluene leads to a deep yellow solution containing monodisperse silver nanoparticles (Ag NPs) of ca. 10 nm. This approach leads to nanoparticles with almost uncontaminated surfaces which make them very reactive. Antimicrobial studies show that these nanoparticles are very active as antimicrobial agents. Very low concentrations between 12 and 25 μg ml-1 of Ag NPs are enough to produce bacteriostatic and bactericidal effectiveness. © IOP Publishing Ltd.