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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Ellipsometric Raman Spectroscopy

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Autor(es):
Basilio, Fernando C. ; Campana, Patricia T. ; Therezio, Eralci M. ; Barbosa Neto, Newton M. ; Serein-Spirau, Francoise ; Silva, Raigna A. ; Oliveira, Jr., Osvaldo N. ; Marletta, Alexandre
Número total de Autores: 8
Tipo de documento: Artigo Científico
Fonte: Journal of Physical Chemistry C; v. 120, n. 43, p. 25101-25109, NOV 3 2016.
Citações Web of Science: 6
Resumo

We introduce a new experimental technique referred to as ellipsometric Raman spectroscopy (ERS) to quantify the Raman optical activity (ROA) where ellipsometry is combined with Raman spectroscopy. The Stokes parameters were determined for Raman scattered light using Fourier decomposition in measurements with achromatic optical components in a nine-point method. We tested the methodology with ultrapure water, a well-known chiral alcohol, and a chiral polymer, and we show that ERS allows for studying not only the vicinities of chiral carbons but also molecular species coupled to form chiral structures. Furthermore, in ERS, isotropic and anisotropic scattering contribute equally, thus making it possible to analyze the low-wavenumber region in samples such as the chiral polymer studied here, for which the ROA signal probably arises mainly from isotropic scattering. (AU)

Processo FAPESP: 13/14262-7 - Filmes nanoestruturados de materiais de interesse biológico
Beneficiário:Osvaldo Novais de Oliveira Junior
Modalidade de apoio: Auxílio à Pesquisa - Temático