Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands

Detalhes bibliográficos
Autor(a) principal: Resende Filho,João B. M.
Data de Publicação: 2014
Outros Autores: Silva,Jannine C., Vale,Juliana A., Brito,Hermi F., Faustino,Wagner M., Espínola,José G. P., Felinto,Maria C. F. C., Teotonio,Ercules E. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100020
Resumo: Novel Ln3+-indandionate complexes of formulas [Ln(aind)3L(H2O)] and [Ln(bind)3L]∙H2O (L: 1,10-phenanthroline (phen) or 4,7-dimethyl-1,10-phenanthroline (dmphen), Ln3+: Eu3+ or Gd3+, aind: 2-acetyl-1,3-indandionate and bind: 2-benzoyl-1,3-indandionate) were synthesized and characterized by elemental analysis, infrared spectroscopy, and thermogravimetric analyses. The characterization data are consistent with the presence of a water lattice molecule in the [Ln(bind)3L]∙H2O compounds. However, the data also suggest that the water acts as a coordinated molecule in the [Ln(aind)3L(H2O)] ones. Theoretical geometries of the Eu3+-complexes have been optimized via the SPARKLE/AM1 Model for lanthanide complexes that are consistent with their luminescence experimental data. The photoluminescence properties of the Eu3+-compounds have been discussed in terms of experimental intensity parameters (Ω2 and Ω4), radiative (Arad), and non-radiative (Anrad) spontaneous emission coefficients. The higher values of emission quantum efficiency (η) of the [Eu(bind)3L]∙H2O compounds reflect the absence of luminescence-quenching water molecule in their first coordination spheres.
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spelling Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligandslanthanides2-acyl-1,3-indandionates4,7-dimethyl-1,10-phenanthrolineNovel Ln3+-indandionate complexes of formulas [Ln(aind)3L(H2O)] and [Ln(bind)3L]∙H2O (L: 1,10-phenanthroline (phen) or 4,7-dimethyl-1,10-phenanthroline (dmphen), Ln3+: Eu3+ or Gd3+, aind: 2-acetyl-1,3-indandionate and bind: 2-benzoyl-1,3-indandionate) were synthesized and characterized by elemental analysis, infrared spectroscopy, and thermogravimetric analyses. The characterization data are consistent with the presence of a water lattice molecule in the [Ln(bind)3L]∙H2O compounds. However, the data also suggest that the water acts as a coordinated molecule in the [Ln(aind)3L(H2O)] ones. Theoretical geometries of the Eu3+-complexes have been optimized via the SPARKLE/AM1 Model for lanthanide complexes that are consistent with their luminescence experimental data. The photoluminescence properties of the Eu3+-compounds have been discussed in terms of experimental intensity parameters (Ω2 and Ω4), radiative (Arad), and non-radiative (Anrad) spontaneous emission coefficients. The higher values of emission quantum efficiency (η) of the [Eu(bind)3L]∙H2O compounds reflect the absence of luminescence-quenching water molecule in their first coordination spheres.Sociedade Brasileira de Química2014-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100020Journal of the Brazilian Chemical Society v.25 n.11 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140197info:eu-repo/semantics/openAccessResende Filho,João B. M.Silva,Jannine C.Vale,Juliana A.Brito,Hermi F.Faustino,Wagner M.Espínola,José G. P.Felinto,Maria C. F. C.Teotonio,Ercules E. S.eng2014-11-13T00:00:00Zoai:scielo:S0103-50532014001100020Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-11-13T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
title Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
spellingShingle Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
Resende Filho,João B. M.
lanthanides
2-acyl-1,3-indandionates
4,7-dimethyl-1,10-phenanthroline
title_short Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
title_full Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
title_fullStr Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
title_full_unstemmed Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
title_sort Novel luminescent Eu3+-indandionate complexes containing heterobiaryl ligands
author Resende Filho,João B. M.
author_facet Resende Filho,João B. M.
Silva,Jannine C.
Vale,Juliana A.
Brito,Hermi F.
Faustino,Wagner M.
Espínola,José G. P.
Felinto,Maria C. F. C.
Teotonio,Ercules E. S.
author_role author
author2 Silva,Jannine C.
Vale,Juliana A.
Brito,Hermi F.
Faustino,Wagner M.
Espínola,José G. P.
Felinto,Maria C. F. C.
Teotonio,Ercules E. S.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Resende Filho,João B. M.
Silva,Jannine C.
Vale,Juliana A.
Brito,Hermi F.
Faustino,Wagner M.
Espínola,José G. P.
Felinto,Maria C. F. C.
Teotonio,Ercules E. S.
dc.subject.por.fl_str_mv lanthanides
2-acyl-1,3-indandionates
4,7-dimethyl-1,10-phenanthroline
topic lanthanides
2-acyl-1,3-indandionates
4,7-dimethyl-1,10-phenanthroline
description Novel Ln3+-indandionate complexes of formulas [Ln(aind)3L(H2O)] and [Ln(bind)3L]∙H2O (L: 1,10-phenanthroline (phen) or 4,7-dimethyl-1,10-phenanthroline (dmphen), Ln3+: Eu3+ or Gd3+, aind: 2-acetyl-1,3-indandionate and bind: 2-benzoyl-1,3-indandionate) were synthesized and characterized by elemental analysis, infrared spectroscopy, and thermogravimetric analyses. The characterization data are consistent with the presence of a water lattice molecule in the [Ln(bind)3L]∙H2O compounds. However, the data also suggest that the water acts as a coordinated molecule in the [Ln(aind)3L(H2O)] ones. Theoretical geometries of the Eu3+-complexes have been optimized via the SPARKLE/AM1 Model for lanthanide complexes that are consistent with their luminescence experimental data. The photoluminescence properties of the Eu3+-compounds have been discussed in terms of experimental intensity parameters (Ω2 and Ω4), radiative (Arad), and non-radiative (Anrad) spontaneous emission coefficients. The higher values of emission quantum efficiency (η) of the [Eu(bind)3L]∙H2O compounds reflect the absence of luminescence-quenching water molecule in their first coordination spheres.
publishDate 2014
dc.date.none.fl_str_mv 2014-11-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140197
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.25 n.11 2014
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
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reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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