Highly sensitive and simple SERS substrate based on photochemically generated carbon nanotubes-gold nanorods hybrids

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Abstract

We report a simple and easy formation of hybrids between multi-wall carbon nanotubes and gold nanorods by one-pot in situ photochemical synthesis. Measurements of surface-enhanced Raman scattering (SERS) through the effect "coffee ring" in visible and near infrared (NIR) show high sensitivity with detection of nanomolar concentrations of aromatic dyes. The formation of nanocomposites between carbon nanotubes and gold nanorods without chemical binders simplifies the preparation. Photochemical synthesis is an advance over the techniques previously published.

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Caires, A. J., Vaz, R. P., Fantini, C., & Ladeira, L. O. (2015). Highly sensitive and simple SERS substrate based on photochemically generated carbon nanotubes-gold nanorods hybrids. Journal of Colloid and Interface Science, 455, 78–82. https://doi.org/10.1016/j.jcis.2015.04.071

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