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Influence of the synthesis time on the microsstructure and photophysical properties of Gd-MOFs doped with Eu3+

dc.creatorNascimento, Jarley Fagner Silva do
dc.creatorBarros, Braulio Silva
dc.creatorKulesza, Joanna
dc.creatorOliveira, Joao Bosco Lucena de
dc.creatorLeite, Ana Karina Pereira
dc.creatorOliveira, Rosivania Silva de
dc.date.accessioned2021-03-16T19:18:31Z
dc.date.available2021-03-16T19:18:31Z
dc.date.issued2017-01-09
dc.identifier.issn0254-0584pt_BR
dc.identifier.urihttp://memoria.ifrn.edu.br/handle/1044/1964
dc.description.abstractMetal Organic Frameworks (MOFs) are hybrid materials, usually crystalline, consisting of metallic species or clusters, connected by polytopic organic ligands originating bi or tridimensional porous structures. In this work, Gd-1,4-BDC-MOFs doped with 5% mol Eu3+ were synthesized via solvothermal method at 180°C. The effect of the synthesis time (3, 5 or 7 days) on the microstructure and photophysical properties of the obtained MOFs were evaluated. It was found that porous agglomerates were formed within three days, gradually changing their morphology to rod-like crystals within seven days. The photoluminescence excitation and emission spectra revealed an efficient energy transfer from the ligand to the Eu3+ levels (antenna effect), what is not expected for 1,4-BDC2- in a Eu(III)-based MOFs. We concluded that the presence of highly paramagnetic Gd3+ ions in the matrix enhanced the antenna effect, resulting in a strong red emission.pt_BR
dc.languageengpt_BR
dc.publisherInstituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Nortept_BR
dc.relation.ispartofMaterials Chemistry and Physicspt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectMOFspt_BR
dc.subjectLanthanidespt_BR
dc.subjectAntenna effectpt_BR
dc.titleInfluence of the synthesis time on the microsstructure and photophysical properties of Gd-MOFs doped with Eu3+pt_BR
dc.typeArtigo de Periódicopt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentMacaupt_BR
dc.publisher.initialsIFRNpt_BR
dc.subject.cnpqCiências Exatas e da Terrapt_BR
dc.citation.issue190pt_BR
dc.citation.spage166pt_BR
dc.citation.epage174pt_BR
dc.description.resumoMetal Organic Frameworks (MOFs) are hybrid materials, usually crystalline, consisting of metallic species or clusters, connected by polytopic organic ligands originating bi or tridimensional porous structures. In this work, Gd-1,4-BDC-MOFs doped with 5% mol Eu3+ were synthesized via solvothermal method at 180°C. The effect of the synthesis time (3, 5 or 7 days) on the microstructure and photophysical properties of the obtained MOFs were evaluated. It was found that porous agglomerates were formed within three days, gradually changing their morphology to rod-like crystals within seven days. The photoluminescence excitation and emission spectra revealed an efficient energy transfer from the ligand to the Eu3+ levels (antenna effect), what is not expected for 1,4-BDC2- in a Eu(III)-based MOFs. We concluded that the presence of highly paramagnetic Gd3+ ions in the matrix enhanced the antenna effect, resulting in a strong red emission.pt_BR


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