Incorporation of Rare-Earth Complexes in alpha-Zirconium Phosphate Layered Matrices via Pendant Amino Groups

摘要

Amino-substituted rare-earth complexes (p-LnNH_2DBM and m-LnNH_2DBM with Ln~(3+)=Eu~(3+),Y~(3+)) are intercalated in the interlayer region of a alpha-zirconium phosphate lattice to give luminescent hybrid lamellar materials.The preparation of the organic precursors and of the derived organic-inorganic materials is reported.XRD studies show that the hybrid compounds retain a layered structure and FTIR spectroscopy is used to monitor the intercalation reaction.The acid/base interactions between the NH_2 functions and the pendant P-OH groups induce an important blue-shift of the absorption maximum of the organic molecule.The Eu~(3+) lumnescence properties are investigated before and after intercalation of the organic complexes in the alpha-ZrP host structure and the optical characteristics of the para and meta derivatives are also compared.