Robust SERS Platforms Based on Annealed Gold Nanostructures Formed on Ultrafine Glass Substrates for Various (Bio)Applications

Abstract : In this study, stable gold nanoparticles (AuNPs) are fabricated for the first time on commercial ultrafine glass coverslips coated with gold thin layers (2 nm, 4 nm, 6 nm, and 8 nm) at 25 °C and annealed at high temperatures (350 °C, 450 °C, and 550 °C) on a hot plate for different periods of time. Such gold nanostructured coverslips were systematically tested via surface enhanced Raman spectroscopy (SERS) to identify their spectral performances in the presence of different concentrations of a model molecule, namely 1,2-bis-(4-pyridyl)-ethene (BPE). By using these SERS platforms, it is possible to detect BPE traces (10−12 M) in aqueous solutions in 120 s. The stability of SERS spectra over five weeks of thiol-DNA probe (2 µL) deposited on gold nano-structured coverslip is also reported.
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https://hal-utt.archives-ouvertes.fr/hal-02310974
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Thursday, October 10, 2019 - 3:51:03 PM
Last modification on : Friday, October 11, 2019 - 1:31:03 AM

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Lan Zhou, Simone Poggesi, Giuliocesare Casari Bariani, Rakesh Mittapalli, Pierre-Michel Adam, et al.. Robust SERS Platforms Based on Annealed Gold Nanostructures Formed on Ultrafine Glass Substrates for Various (Bio)Applications. Biosensors, Elsevier, 2019, 9 (2), pp.53. ⟨10.3390/bios9020053⟩. ⟨hal-02310974⟩

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