Fluorescence analysis of iodinated acetophenone derivatives

Fluorescence analysis of iodinated acetophenone derivatives

Author Crivelaro, F. Google Scholar
Oliveira, M. R. S. Google Scholar
Lima, S. M. Google Scholar
Andrade, L. H. C. Google Scholar
Casagrande, G. A. Google Scholar
Raminelli, C. Autor UNIFESP Google Scholar
Caires, A. R. L. Google Scholar
Institution Fundacao Univ Fed Grande Dourados
Universidade Estadual de Mato Grosso do Sul (UEMS)
Universidade Federal de Mato Grosso do Sul (UFMS)
Universidade Federal de São Paulo (UNIFESP)
Abstract In the present paper the synthesis and optical characterization of iodinated acetophenone, 4-hydroxy-3-iodoacetophenone and 4-hydroxy-3,5-diiodoacetophenone obtained from 4-hydroxyacetophenone, were carried out. the optical features of iodinated molecules were determined by performing the UV-Vis absorption, fluorescence and thermal lens spectroscopies. the results showed that the optical properties of the 4-hydroxyacetophenone is altered when the iodine atom is inserted, as substituent, in the aromatic ring. Although it was determined that the optical feature was changed when one iodine atom was inserted in the aromatic ring (4-hydroxy-3-iodoacetophenone), the results revealed that emission behavior was strongly altered when two iodine atoms (4-hydroxy-3,5-diiodoacetophenone) were acting as substituents: the fluorescence quantum efficiency increases approximately 60%. (C) 2014 Elsevier B.V. All rights reserved.
Keywords Fluorescence
Fluorescence quantum yield
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
National Institute of Science and Technology of Optics and Photonics (INOF)
Date 2015-03-15
Published in Spectrochimica Acta Part A-molecular and Biomolecular Spectroscopy. Oxford: Pergamon-Elsevier B.V., v. 139, p. 63-67, 2015.
ISSN 1386-1425 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 63-67
Origin http://dx.doi.org/10.1016/j.saa.2014.12.037
Access rights Closed access
Type Article
Web of Science ID WOS:000350076700010
URI http://repositorio.unifesp.br/handle/11600/38890

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