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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/61188
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dc.creatorRoberto Luiz Moreirapt_BR
dc.creatorRicardo P. S. M. Lobopt_BR
dc.creatorAnderson Diaspt_BR
dc.date.accessioned2023-11-21T17:12:37Z-
dc.date.available2023-11-21T17:12:37Z-
dc.date.issued2018-
dc.citation.volume188pt_BR
dc.citation.spage276pt_BR
dc.citation.epage284pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.saa.2017.07.017pt_BR
dc.identifier.issn1386-1425pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/61188-
dc.description.resumoA 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.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetospt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopypt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectTaurinept_BR
dc.subjectAmino acidspt_BR
dc.subjectRaman spectrapt_BR
dc.subjectInfrared spectroscopypt_BR
dc.subjectDispersion analysispt_BR
dc.subjectMonoclinic crystalspt_BR
dc.subject.otherTaurinapt_BR
dc.subject.otherAminoácidospt_BR
dc.subject.otherRaman, Efeito dept_BR
dc.subject.otherEspectroscopia de infravermelhopt_BR
dc.subject.otherDeterminação de tamanho de partículapt_BR
dc.subject.otherCristaispt_BR
dc.subject.otherDetectores químicospt_BR
dc.titleInfrared dispersion analysis and raman scattering spectra of taurine single crystalspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S1386142517305760pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6820-0269pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2355-6856pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7413-1087pt_BR
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