Gold-copper nanostars as photo-thermal agents: synthesis and advanced electron microscopy characterization

Nanoalloys have emerged as multi-functional nanoparticles with applications in biomedicine and catalysis. This work reports the efficient production and the advanced transmission electron microscopy characterization of gold-copper pentagonal nanostars. The morphology of the branches is controlled by...

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Bibliographic Details
Published in:	Nanoscale Vol. 7; no. 48; p. 20734
Main Authors:	Bazán-Díaz, Lourdes, Mendoza-Cruz, Rubén, Velázquez-Salazar, J Jesús, Plascencia-Villa, Germán, Romeu, David, Reyes-Gasga, José, Herrera-Becerra, Raúl, José-Yacamán, Miguel, Guisbiers, Grégory
Format:	Journal Article
Language:	English
Published:	England 28-12-2015
Subjects:	Copper - chemistry Gold - chemistry Hyperthermia, Induced - methods Metal Nanoparticles - chemistry Metal Nanoparticles - ultrastructure Microscopy, Electron, Transmission Phototherapy - methods
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Summary:	Nanoalloys have emerged as multi-functional nanoparticles with applications in biomedicine and catalysis. This work reports the efficient production and the advanced transmission electron microscopy characterization of gold-copper pentagonal nanostars. The morphology of the branches is controlled by the adequate choice of the capping agent. When oleylamine is used rounded nanostars are produced, while pointed nanostars are obtained by using hexadecylamine. Both types of nanostars were proved to be thermally stable and could therefore be used as therapeutic agents in photo-thermal therapies as confirmed by the near-infrared absorption spectra.
ISSN:	2040-3372
DOI:	10.1039/c5nr06491k