Photoluminescence and thermoanalytical studies of complexes based on 5-Cl-8-hydroxyquinoline and calix[4]arene ligands

Photoluminescence and thermoanalytical studies of complexes based on 5-Cl-8-hydroxyquinoline and calix[4]arene ligands

Author Soares, Marcos N. Autor UNIFESP Google Scholar
Moscardini, Elder F. Autor UNIFESP Google Scholar
Mercuri, Lucildes P. Autor UNIFESP Google Scholar
Bagatin, Izilda A. Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract A innovative 5-Cl-8-oxyquinolinepropoxycalix[4]arene ligand (2) have been prepared, exhibiting, at room temperature, blue fluorescent light emission and resulting in shift band to green fluorescent light (fluorescence mode) in the presence of coordinated Eu(III) and Tb(III) ions. Terbium complex presented phosphorescence emission as noted by typical bands at 490 nm, 545 nm and 585 nm. TG/DTG data exhibited typical thermal behavior for these compounds, however DSC curves showed the melting temperature near 300 degrees C for the samples, demonstrating an unusual thermal stability when quinoline derivatives are attached to calix[4]arene matrix. This fact strongly suggests an effective approach to preparing the photoluminescent compound associating high chemical and thermal stability. (C) 2013 Elsevier B.V. All rights reserved.
Keywords Calix[4]arene
Luminescence
Supramolecular chemistry
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Date 2013-05-01
Published in Materials Science & Engineering C-materials for Biological Applications. Amsterdam: Elsevier B.V., v. 33, n. 4, p. 2213-2220, 2013.
ISSN 0928-4931 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 2213-2220
Origin http://dx.doi.org/10.1016/j.msec.2013.01.043
Access rights Closed access
Type Article
Web of Science ID WOS:000317528700048
URI http://repositorio.unifesp.br/handle/11600/36296

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