Abstract: Series of novel organic?inorganic hybrids materials based on trivalent lanthanides (Ln = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and 1,4-phenylbis(phosphonate) obtained under hydrothermal conditions either by oven heat or microwave irradiation. The anhydrous compounds containing La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, and Ho, are isostructural. However, the compounds based on Y, Er, Tm, Yb, and Lu are hydrated and their structures have not yet been solved. The series of compounds are characterized by PXRD, TEM, SEM-EDX and thermal analyses (TG-MS and DSC). TEM study show a variable particles size with a minimum mean-particle size of ca. 30 nm. These compounds exhibit unusual very high thermal stability. The size of particles and the thermal stability are depending on lanthanide(III) cation features. All the investigated materials show paramagnetic behaviour. The magnetic susceptibility data follow a Curie?Weiss laws with paramagnetic effective moments in good agreement with those expected for Ln3+ free ions.
Autoría: Amghouz Z., García J.R., García-Granda S., Clearfield A., Rodríguez Fernández J., De Pedro I., Blanco J.A.,
Fuente: Journal of Alloys and Compounds, 2012, 536(Supplement 1), S499-S503
Editorial: Elsevier Ltd
Año de publicación: 2012
Nº de páginas: 5
Tipo de publicación: Artículo de Revista
DOI: 10.1016/j.jallcom.2011.12.029
ISSN: 0925-8388,1873-4669
Proyecto español: MAT2010-15094
Url de la publicación: https://doi.org/10.1016/j.jallcom.2011.12.029