Surface-enhanced Raman scattering in ETPTA inverse photonic crystals with gold nanoparticles

Matin Ashurov; Bakhodur Abdusatorov; Alexander Baranchikov; Sergey Klimonsky

doi:10.1039/d1cp02958d

Surface-enhanced Raman scattering in ETPTA inverse photonic crystals with gold nanoparticles

Phys Chem Chem Phys. 2021 Sep 22;23(36):20275-20281. doi: 10.1039/d1cp02958d.

Authors

Matin Ashurov¹, Bakhodur Abdusatorov², Alexander Baranchikov³, Sergey Klimonsky^{1

4}

Affiliations

¹ Faculty of Materials Science, Lomonosov Moscow State University, Moscow, 119991, Russia.
² HSM Laboratory, Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Moscow, 121205, Russia.
³ Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, 119991, Russia.
⁴ Department of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia. klim@inorg.chem.msu.ru.

PMID: 34486005
DOI: 10.1039/d1cp02958d

Abstract

We present a substrate design for surface-enhanced Raman scattering by decorating three-dimensional inverse photonic crystals with a small amount of Au nanoparticles. Photonic crystals with different positions of the photonic stop band were fabricated by inverting opal-type templates using photopolymerization of a trimethylolpropane ethoxylate triacrylate (ETPTA) photocurable resin. Then Au nanoparticles were embedded into inverse ETPTA films by multiple infiltration. Using the methylene blue dye as a test compound, we found that the enhancement factor of the Raman signal is strongly dependent on the spectral position of the photonic stop band, reaching a value of about 1-2 × 10⁵ when it coincides with the laser wavelength. The detection limit for methylene blue in solution is of the order of 10^-7 M.