Novel microporous europium and terbium silicates

D Ananias; A Ferreira; J Rocha; P Ferreira; J P Rainho; C Morais; L D Carlos

doi:10.1021/ja010244z

Novel microporous europium and terbium silicates

J Am Chem Soc. 2001 Jun 20;123(24):5735-42. doi: 10.1021/ja010244z.

Authors

D Ananias¹, A Ferreira, J Rocha, P Ferreira, J P Rainho, C Morais, L D Carlos

Affiliation

¹ Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.

PMID: 11403606
DOI: 10.1021/ja010244z

Abstract

The synthesis and structural characterization of the first examples of microporous europium(III) and terbium(III) silicates (Na(4)K(2)X(2)Si(16)O(38) x 10H(2)O, X = Eu, Tb) are reported. The structure of these solids was solved by powder X-ray diffraction ab initio (direct) methods and further characterized by chemical analysis (EDS), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), (23)Na and (29)Si magic-angle spinning (MAS) NMR, and luminescence spectroscopy. Both materials display interesting photoluminescence properties and present potential for applications in optoelectronics. This work illustrates the possibility of combining in a given silicate microporosity and optical activity.