Organic-inorganic hybrid materials containing luminescent lanthanide complexes are widely studied due to the well-known characteristics such as thermal and chemical stability and color purity emission. In this work the functionalization of polydimethylsiloxane (pmds) with allyldiphenylphosphine oxide (adppo) and the bonding of the [Eu(tta)3(H2O)2] and [Tb(3,5-dcba)3] complexes in this siloxane are described, as well as their characterization. The functionalization of pdms was confirmed by Raman spectroscopy monitoring the allyl group stretching frequency. [Eu(tta)3(H2O)2] and [Tb(3,5-dcba)3] stoichiometry were confirmed by FT-IR, TGA, elemental and complexiometric analysis. The emission profile of the membrane show narrow bands characteristics of the europium(III) and terbium(III) 4f ? 4f transitions. The excitation spectrum monitoring the 5D0 ? 7F4 transition of the [Eu(tta)3(adppo)2] shows the p ? p* and n ? p* levels of the [Tb(3,5-dcba)3(adppo)2] and [Eu(tta)3(adppo)2], respectively. The 5D0 ? 7Fj of the europium(III) transitions are predominant when exciting at levels of both complexes, indicating the energy transfer from terbium(III) to europium(III) complex.

Europium(III) and terbium(III) complexes anchored in phosphine oxide-functionalized polydimethylsiloxane membranes

245th National Meeting (2013)

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