Fluorescence in complexes based on quinolines-derivatives: a search for better fluorescent probes

Fluorescence in complexes based on quinolines-derivatives: a search for better fluorescent probes

Author Mecca, Carolina Zeni Pires Autor UNIFESP Google Scholar
Fonseca, Fernando Luiz Affonso Autor UNIFESP Google Scholar
Bagatin, Izilda Aparecida Autor UNIFESP Google Scholar
Abstract Quinoline-derived fluorescent complexes were designed

synthesized by the reaction of 5-nitro-8-hydroxyquinoline and 5-chloro-8-hydroxyquinoline with Al3+, Mg2+, Zn2+, and Cd2+ salts (1-8)

and characterized. The H-1 NMR spectra of complexes 1 and 5, containing A13+, were consistent with an octahedral structure having approximate D-3 symmetry, and the results supported the favored facial isomer (fac). Data for complexes 2-4 and 6-8 supported the formation of tetrahedral structures. Intense luminescence was detected for complexes 5-8, even with the naked eye, as indicated by quantum yield values of 0.087, 0.094, 0.051, and 0.021, respectively. Furthermore, in contrast to 5-nitro-8-hydroxyquinoline, the 5-chloro-8-hydroxyquinoline ligand exhibited bands at different energies depending on the coordinated, metal, which supported its potential application in ionic and biological probes, as well as in cell imaging. (C) 2016 Elsevier B.V. All rights reserved.
Keywords Quinolines
Coordination complexes
Luminescence
xmlui.dri2xhtml.METS-1.0.item-coverage Oxford
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Grant number FAPESP: 2010/16830-4
Date 2016
Published in Spectrochimica Acta Part A-Molecular And Biomolecular Spectroscopy. Oxford, v. 168, p. 104-110, 2016.
ISSN 1386-1425 (Sherpa/Romeo, impact factor)
Publisher Pergamon-Elsevier Science Ltd
Extent 104-110
Origin http://dx.doi.org/10.1016/j.saa.2016.06.006
Access rights Closed access
Type Article
Web of Science ID WOS:000380072400014
URI https://repositorio.unifesp.br/handle/11600/56724

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