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Spectroscopic study of Eu(fod)3 complex adsorbed on an amorphous silicon inorganic–organic hybrid

2002; Elsevier BV; Volume: 18; Issue: 4 Linguagem: Inglês

10.1016/s0925-3467(01)00184-7

1873-1252

Robson Fernandes de Farias, Severino Alves, Mônica F. Belian, Gilberto F. de Sá,

Luminescence Properties of Advanced Materials

By using tetraethylorthosilicate (TEOS) and N-[3(trimethoxysilyl) propyl]-ethylenediamine as precursors, an inorganic–organic hybrid is synthesized, which is employed as a substrate to adsorption and hence spectroscopic study of the Eu(fod)3 complex. Eu(fod)3 and the silicon hybrid were mixed in stoichiometric amounts to produce samples with 1%, 5% and 10% (m/m) of adsorbed complex, with the matrices being pressed at 380 mPa for 0.5, 30 and 60 min. It is verified that the intensity of the 5D0→7F2 emission band decreases as the percentage of complex is increased, which is interpreted as consequence of the modification of the coordination sphere of the complex.