Chemical transformation of a luminescent two-dimensional Eu(iii) coordination polymer in the aqueous phase

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorDa Silva, Caroline Moraes [UNESP]-
Autor(es): dc.creatorEllena, Javier-
Autor(es): dc.creatorFrem, Regina Célia Galvão [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:26:24Z-
Data de disponibilização: dc.date.available2022-02-22T00:26:24Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-06-28-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/c9nj06075h-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/199077-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/199077-
Descrição: dc.descriptionIn this work, the 2D Eu(iii) coordination polymer {[Eu(HPDC)(PDC)]}n (PDC = 2,6-pyridinedicarboxylate) (1) was prepared in a fast manner via microwave-assisted hydrothermal synthesis. The same compound was obtained by a conventional hydrothermal route and had its structure determined through single crystal X-ray diffraction. In 1, the HPDC and PDC ligands exhibit terminal and chelating bridging modes, respectively, forming a coordination polymer through interconnected europium-carboxylate chains, leading to a highly ordered two-dimensional layer. The nanosheets in 1 self-organize in the solid-state by intermolecular interactions, producing a 3D supramolecular network. Solid-state photoluminescence studies have shown that the antenna effect is responsible for the red emission of the compound under ultraviolet excitation. In alcoholic solutions, it was possible to exfoliate the material by ultrasonication in a top-down approach, leading to single nanosheets of 1. In the chemical stability studies, there was observed a water-induced transformation of 1, leading to the compound {[Eu(PDC)(HPDC)(H2O)2]·4H2O}n (2). The aqueous suspension of this material shows strong red luminescence with the naked-eye. 2 demonstrates reversible behavior induced by heating under reduced pressure. Our work highlights the properties related to solvent-induced exfoliation and water-induced transformation.-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University UNESP-
Descrição: dc.descriptionSão Carlos Institute of Physics University of São Paulo USP-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University UNESP-
Formato: dc.format10146-10152-
Idioma: dc.languageen-
Relação: dc.relationNew Journal of Chemistry-
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Título: dc.titleChemical transformation of a luminescent two-dimensional Eu(iii) coordination polymer in the aqueous phase-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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