Infrared dispersion analysis and Raman scattering spectra of taurine single crystals.

dc.contributor.authorMoreira, Roberto Luiz
dc.contributor.authorLobo, Ricardo P. S. M.
dc.contributor.authorDias, Anderson
dc.date.accessioned2018-05-17T13:22:56Z
dc.date.available2018-05-17T13:22:56Z
dc.date.issued2018
dc.description.abstractA comprehensive set of optical vibrational modes of monoclinic taurine crystals was determined by Raman scattering, and infrared reflectivity and transmission spectroscopies. By using appropriate scattering/reflection geometries, the vibrational modes were resolved by polarization and the most relevant modes of the crystal could be assigned. In particular, we were able to review the symmetry of the gerade modes and to resolve ambiguities in the literature. Owing to the non-orthogonal character of Bu modes in monoclinic crystals (lying on the optic axial plane), we carried out a generalized Lorentz dispersion analysis consisting of simultaneous adjust of infrared-reflectivity spectra at various light polarization angles. The Au modes (parallel to the C2-axis) were treated within the classical Lorentz model. The behavior of off-diagonal and diagonal terms of the complex dielectric tensors and the presence of anomalous dispersion were discussed as consequences of the low symmetry of the crystal.pt_BR
dc.identifier.citationMOREIRA, R. L.; LOBO, R. P. S. M.; DIAS, A. Infrared dispersion analysis and Raman scattering spectra of taurine single crystals. Spectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy, v. 188, p. 276-284, 2018. Disponível em: <https://www.sciencedirect.com/science/article/pii/S1386142517305760?via%3Dihub>. Acesso em: 05 abr. 2018.pt_BR
dc.identifier.issn13861425
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/9948
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S1386142517305760?via%3Dihubpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectTaurinept_BR
dc.subjectInfrared spectroscopypt_BR
dc.subjectRaman spectrapt_BR
dc.subjectAmino acidspt_BR
dc.titleInfrared dispersion analysis and Raman scattering spectra of taurine single crystals.pt_BR
dc.typeArtigo publicado em periodicopt_BR

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