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dc.contributor.authorColodrero, Rosario M. P.
dc.contributor.authorPapathanasiou, Konstantinos E.
dc.contributor.authorStavgianoudaki, Nikoleta
dc.contributor.authorOlivera-Pastor, Pascual 
dc.contributor.authorLosilla, Enrique R.
dc.contributor.authorG. Aranda, Miguel Ángel
dc.contributor.authorLeón-Reina, Laura
dc.contributor.authorSanz, Jesús
dc.contributor.authorSobrados, Isabel
dc.contributor.authorChoquesillo-Lazarte, Duane
dc.contributor.authorGarcía-Ruíz, Juan M.
dc.contributor.authorAtienzar, Pedro
dc.contributor.authorRey, Fernando
dc.contributor.authorDemadis, Konstantinos D.
dc.contributor.authorCabeza-Diaz, Aurelio 
dc.date.accessioned2021-03-08T08:27:04Z
dc.date.available2021-03-08T08:27:04Z
dc.date.issued2012-09-15
dc.identifier.citationChem. Mater. 2012, 24, 3780−3792es_ES
dc.identifier.urihttps://hdl.handle.net/10630/21037
dc.description.abstractThe chemistry of metal phosphonates has been progressing fast with the addition of new materials that possess novel structural features and new properties, occasionally in a cooperative manner. In this paper, we report a new family of functional lanthanide-carboxyphosphonate materials. Specifically, the lanthanide is La, Ce, Pr, Sm, Eu, Gd, Tb, or Dy and the carboxyphosphonate ligand is 2-hydroxyphosphonoacetic acid (H3HPA) . All reported LnHPA compounds, Ln3(H0.75O3PCHOHCOO)4·xH2O (x = 15−16), crystallize in the orthorhombic system. Two types of structures were isolated: series I and II polymorphs. For both series, the three-dimensional (3D) open frameworks result from the linkage of similar organo-inorganic layers, in the ac-plane, by central lanthanide cations, which yield trimeric units also found in other metal-HPA hybrids. Large oval-shaped 1D channels are formed by the spatial separation of the layers along the b-axis and filled with lattice water molecules. LnHPA materials undergo remarkable crystalline-to-amorphous-to crystalline transformations upon dehydration and rehydration cycles, as confirmed by thermodiffraction and NMR spectroscopy. The highest proton conductivity was observed for GdHPA (series II), 3.2 × 10−4 S cm−1 at 98% RH and T = 21 °C. The dehydration−rehydration chemistry was also followed by photoluminescence spectroscopy. It was shown that loss and reuptake of water molecules are accompanied by clear changes in the photoluminescence spectra and lifetimes of the Eu analog (series II). Our present results reveal a wide family of wellcharacterized, multifunctional lanthanide based phosphonate 3D-structured metal−organic frameworks (MOFs) that show reversible crystalline-to-amorphous-to-crystalline transformations and, at the same time, exhibit high proton conductivity.es_ES
dc.description.sponsorshipProyecto nacional MAT2010-15175es_ES
dc.language.isoenges_ES
dc.publisherAmerican Chemical Societyes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectCristalografíaes_ES
dc.subjectMaterialeses_ES
dc.subjectQuímicaes_ES
dc.subject.otherLanthanide Carboxyphosphonatees_ES
dc.subject.otherX-ray diffractiones_ES
dc.subject.otherCrystalline-to-Amorphous-to-Crystalline Transformationses_ES
dc.subject.other3D structurees_ES
dc.subject.otherMetal phosphonateses_ES
dc.subject.otherProton conductivityes_ES
dc.subject.otherLuminescent lanthanide phosphonateses_ES
dc.titleMultifunctional Luminescent and Proton-Conducting Lanthanide Carboxyphosphonate Open-Framework Hybrids Exhibiting Crystalline-to-Amorphous-to-Crystalline Transformationses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doidx.doi.org/10.1021/cm302381k
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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