CuTe Nanocrystals: Shape and Size Control, Plasmonic Properties, and Use as SERS Probes and Photothermal Agents
journal contributionposted on 15.05.2013, 00:00 by 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
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.