Photoluminescent materials based on silica doped with lanthanide complexes of 4'-formylbenzo-15-crown-5.
Photoluminescent materials were prepared by introducing lanthanide complexes of 4'-formylbenzo-15-crown-5 (C15H20O6) into a silica matrix obtained by the sol-gel method. The new lanthanide complexes [Ln(C15H20O6)(NO3)3(H2O)2] (Ln3+ = Sm3+, Eu3+ and Tb3+) were synthesized and were fully characterised using spectroscopic techniques, and elemental and thermogravimetric analysis. Photoluminescence measurements were performed for the isolated Eu3+ and Tb3+ complexes as well as for their related silica based materials. A detailed comparative analysis on the photoluminescent properties of the EU3+ complex and of its derived silica material was carried out.
Soares-Santos
Paula C R
PC
Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
Ferreira
Rute A S
RA
Trindade
Tito
T
Carlos
Luís D
LD
Nogueira
Helena I S
HI