dc.creatorDíaz Valenzuela, Carlos
dc.creatorValenzuela, M. L.
dc.creatorGarcía, C.
dc.creatorCampa, R. de la
dc.creatorPresa Soto, A.
dc.date.accessioned2018-06-07T20:15:07Z
dc.date.accessioned2019-04-26T01:37:01Z
dc.date.available2018-06-07T20:15:07Z
dc.date.available2019-04-26T01:37:01Z
dc.date.created2018-06-07T20:15:07Z
dc.date.issued2017
dc.identifierMaterials Letters 209 (2017) 111–114
dc.identifier10.1016/j.matlet.2017.07.112
dc.identifierhttp://repositorio.uchile.cl/handle/2250/148717
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2452768
dc.description.abstractWe herein reports the solid-state synthesis of pure and doped lanthanide oxides by using polymeric materials (chitosan and polystyrene-co-poly(4-vinylpyridine), PS-co-P4VP) as a solid template. Lanthanide nanomaterials are prepared in two-step methodology combining both solution and solid procedures. The first involves the synthesis of macromolecular complexes Chitosan.[M(NO3)(3)//M'(NO3)(3)] and PS-co-P4VP.[M(NO3)(3)//M'(NO3)(3)] (M = La, Pr; M' = Eu); and the second consists in the pyrolysis at 800 degrees C of the as-prepared solid macromolecular complexes. The pyrolytic products were characterized by X-ray diffraction, SEM-EDS, TEM, and HR-TEM. Whereas similar particle size distribution in average (ca. 25 nm) was observed with both polymer templates, a higher degree of crystallinity was obtained by using PS-co-P4VP. Importantly, the emission luminescent intensity of the doped pyrolytic oxides, La2O3//Eu2O3 and PrO1,83//Eu2O3, is not quenched despite the presence of dopant. Thus, the as-prepared doped oxides exhibit an enhanced Eu3+ emission originated from the D-5(0) -> F-7(n) (n = 1, 2, 3, 4) transitions, which is more intense for the PS-co-P4VP template. This synthetic methodology base on the pyrolysis of polymeric complexes can be considered as a general and straightforward methodology leading to pure and Eu3+-doped nanostructured lanthanide oxide.
dc.languageen
dc.publisherElsevier
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
dc.sourceMaterials Letters
dc.subjectPolymer templated
dc.subjectLanthanide oxide
dc.subjectChitosan
dc.subjectEuropium doped
dc.titleSolid-state synthesis of pure and doped lanthanide oxide nanomaterials by using polymer templates. Study of their luminescent properties
dc.typeArtículos de revistas


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