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Shielded Silver Nanorods for Bioapplications. | LitMetric

Shielded Silver Nanorods for Bioapplications.

Chem Mater

CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo de Miramón 182, 20014 Donostia-San Sebastián, Spain.

Published: July 2020

AI Article Synopsis

  • * A new synthetic method produces polymer-coated silver nanorods that resist degradation and are non-toxic to cells, ensuring their stability and safety for use.
  • * The research showcases these nanorods for intracellular imaging using surface-enhanced Raman scattering (SERS), demonstrating their long-term stability and adaptability for bioanalytical applications.

Article Abstract

Silver is arguably the best plasmonic material in terms of optical performance. However, wide application of Ag and Ag-containing nanoparticles is usually hindered by two major drawbacks, namely, chemical degradation and cytotoxicity. We report herein a synthetic method for highly monodisperse polymer-coated Ag nanorods, which are thereby protected against external stimuli (oxidation, light, heat) and are noncytotoxic to various cell lines. The monodispersity of Ag nanorods endows them with narrow plasmon bands, which are tunable into the near-infrared biological transparency window, thus facilitating application in bioanalytical and therapeutic techniques. We demonstrate intracellular surface-enhanced Raman scattering (SERS) imaging using Ag nanorods encoded with five different Raman reporter molecules. Encoded Ag nanorods display long-term stability in terms of size, shape, optical response, and SERS signal. Our results help eliminate concerns of instability and cytotoxicity in the application of Ag-containing nanoparticles with enhanced optical response, toward the development of bioapplications.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7366494PMC
http://dx.doi.org/10.1021/acs.chemmater.0c01995DOI Listing

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