Polymer/trimer/metal complex mixtures as precursors of gold nanoparticles: tuning the morphology in the solid-state

Thumbnail Image
Valenzuela, Carlos Díaz
Carriedo, Gabino A.
Valenzuela, María Luisa
Zúñiga, Luis
O'Dwyer, Colm
Journal Title
Journal ISSN
Volume Title
Research Projects
Organizational Units
Journal Issue
The pyrolysis of several physical mixtures of AuCl(PPh3) with polymeric [NP(O2C12H8)]n or cyclic N3P3(O2C12H8)3 phosphazenes, formed as solid powders or films with different molar ratios, have been studied under air and at 800 °C. The characterization of the products has shown that the particle size and morphology are strongly dependent on the nature of the phosphazene, the phosphazene/AuCl(PPh3) molar ratio and on the preparation methodology. Gold nanoparticles (NPs) with mean sizes as small as 3.5 nm were obtained from a [NP(O2C12H8)]n/AuCl(PPh3) 1:1 film. The particle morphology was also strongly dependent on the experimentally conditions of the pyrolysis. Powdered materials exhibit a 3-D irregular morphology in the mixture [NP(O2C12H8)]n/AuCl(PPh3) 3:1 film, and gold foams in the 1:1 ratio, both from the [NP(O2C12H8)]n/AuCl(PPh3) as well as N3P3(O2C12H8)3/AuCl(PPh3) mixtures. These results show for the first time the possibility of controlling morphology and size of gold particles obtained by solid-state reactions.
Gold nanoparticle , Phosphazenes , Solid-state
Valenzuela, C. D., Carriedo, G. A., Luisa Valenzuela, M., Zúñiga, L. and O‘Dwyer, C. (2012) 'Polymer/Trimer/Metal Complex Mixtures as Precursors of Gold Nanoparticles: Tuning the Morphology in the Solid-State', Journal of Inorganic and Organometallic Polymers and Materials, 22(2), pp. 447-454. doi: 10.1007/s10904-011-9601-8
© Springer Science+Business Media, LLC 2011. This is a post-peer-review, pre-copyedit version of an article published in Journal of Inorganic and Organometallic Polymers and Materials. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10904-011-9601-8