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High-Energy Al/CuO Nanocomposites Obtained by DNA-Directed Assembly

Severac, Fabrice and Alphonse, Pierre and Estève, Alain and Bancaud, Aurélien and Rossi, Carole High-Energy Al/CuO Nanocomposites Obtained by DNA-Directed Assembly. (2012) Advanced Functional Materials, vol. 22 (n° 2). pp. 323-329. ISSN 1616-301X

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Official URL: http://dx.doi.org/10.1002/adfm.201100763

Abstract

Over the next few years, it is expected that new, energetic, multifunctional materials will be engineered. There is a need for new methods to assemble such materials from manufactured nanopowders. In this article, we demonstrate a DNA-directed assembly procedure to produce highly energetic nanocomposites by assembling Al and CuO nanoparticles into micrometer-sized particles of an Al/CuO nanocomposite, which has exquisite energetic performance in comparison with its physically mixed Al/CuO counterparts. Using 80 nm Al nanoparticles, the heat of reaction and the onset temperature are 1.8 kJ g-1 and 410 degrees C, respectively. This experimental achievement relies on the development of simple and reliable protocols to disperse and sort metallic and metal oxide nanopowders in aqueous solution and the establishment of specific DNA surface-modification processes for Al and CuO nanoparticles. Overall, our work, which shows that DNA can be used as a structural material to assemble Al/Al, CuO/CuO and Al/CuO composite materials, opens a route for molecular engineering of the material on the nanoscale.

Item Type:Article
Additional Information:Thanks to WILEY-BLACKWELL editor. The original version is available at http://www.interscience.wiley.com/. The original PDF of the article can be found at http://onlinelibrary.wiley.com/doi/10.1002/adfm.201100763/pdf
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Denis Faragou
Deposited On:05 Jul 2012 15:10

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