Gold micro- and nano-particles for surface enhanced vibrational spectroscopy of pyridostigmine bromide

Leonid Dolgov, Olena Fesenko, Vladyslav Kavelin, Oksana Budnyk, Victorio Estrela-Llopis, Alona Chevychalova, Taavi Repän, Vladimir I. Kondratiev, Sergii Mamykin

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    Abstract

    Triangular gold microprisms and spherical silica nanoparticles with attached gold nano-islands were examined as an active nanostructures for the surface enhanced Raman and infrared spectroscopy. These particles were probed for the detection of pyridostigmine bromide as a safe analog of military compound sarin. Raman and infrared spectral bands of the pyridostigmine bromide were measured. Detailed correlation of obtained spectral bands with specific vibrations in pyridostigmine bromide was done. Silica nanoparticles with attached gold nano-islands showed more essential enhancement of the Raman signal than gold microcrystals. The reasons of such behaviour are discussed.
    Original languageEnglish
    JournalVibrational Spectroscopy
    Volume88
    Pages (from-to)71-76
    ISSN0924-2031
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Spectroscopy
    • Gilded nanoparticles
    • Pyridostigmine bromide
    • SEIRA
    • SERS
    • Gold
    • Infrared spectroscopy
    • Nanostructures
    • Raman spectroscopy
    • Silica
    • Infrared spectral bands
    • Micro and nano-particle
    • Silica nanoparticles
    • Spherical silica
    • Surface enhanced Raman
    • Nanoparticles

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