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  • CuTe nanocrystals: shape and size control, plasmonic properties, and use as SERS probes and photothermal agents.

CuTe nanocrystals: shape and size control, plasmonic properties, and use as SERS probes and photothermal agents.

Journal of the American Chemical Society (2013-05-08)
Wenhua Li, Reza Zamani, Pilar Rivera Gil, Beatriz Pelaz, Maria Ibáñez, Doris Cadavid, Alexey Shavel, Ramon A Alvarez-Puebla, Wolfgang J Parak, Jordi Arbiol, Andreu Cabot
ABSTRACT

We report a procedure to prepare highly monodisperse copper telluride nanocubes, nanoplates, and nanorods. The procedure is based on the reaction of a copper salt with trioctylphosphine telluride in the presence of lithium bis(trimethylsilyl)amide and oleylamine. CuTe nanocrystals display a strong near-infrared optical absorption associated with localized surface plasmon resonances. We exploit this plasmon resonance for the design of surface-enhanced Raman scattering sensors for unconventional optical probes. Furthermore, we also report here our preliminary analysis of the use of CuTe nanocrystals as cytotoxic and photothermal agents.

MATERIALS
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Sigma-Aldrich
Lithium bis(trimethylsilyl)amide, 99.9% trace metals basis