Email this article Investigation of the SERS Spectra of Hydroquinone Molecule Adsorbed on Titanium Dioxide
- Authors: Polubotko A.M.1, Chelibanov V.P.2
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Affiliations:
- A.F. Ioffe Physical Technical Institute
- State University of Information Technologies, Mechanics, and Optics
- Issue: Vol 124, No 1 (2018)
- Pages: 65-67
- Section: Condensed-Matter Spectroscopy
- URL: https://ogarev-online.ru/0030-400X/article/view/165611
- DOI: https://doi.org/10.1134/S0030400X18010150
- ID: 165611
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Abstract
The paper analyzes the SERS spectrum of hydroquinone adsorbed on nanoparticles of titanium dioxide (TiO2). It is seen that the enhancement is stronger for a larger mean size of nanoparticles that is in agreement with an electrostatic approximation. In addition, it is found that there are the lines, which are forbidden in usual Raman spectra. There is also an enhancement caused both by the normal and tangential components of the electric field. This result is in agreement with the theory of SERS on semiconductor and dielectric substrates. The discovery of the forbidden lines indicates on the sufficiently large role of the strong quadrupole light-molecule interaction in such a system.
About the authors
A. M. Polubotko
A.F. Ioffe Physical Technical Institute
Author for correspondence.
Email: alex.marina@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. P. Chelibanov
State University of Information Technologies, Mechanics, and Optics
Email: alex.marina@mail.ioffe.ru
Russian Federation, St. Petersburg, 197101
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