Several new calix[4] arene-crowns have been synthesized and their complexation of the Eu3+ and Tb3+ ions has been studied in order to obtain compounds exhibiting metal luminescence. Whereas ligands 3 and 5 gave no indication of complex formation with lanthanide ions, ligands 2, 4 and 6 were able to sensitize Eu3+ and Tb3+ luminescence. A high metal luminescence quantum yield was obtained for Tb2. The selectivity of these ligands towards alkali metal ions has also been assessed.
Luminescence of Eu(3+) and Tb(3+) Complexes of New Macrobicyclic Ligands Derived from p-tert-Butylcalix[4]arene / N., Sabbatini; Casnati, Alessandro; C., Fischer; R., Girardini; M., Guardigli; I., Manet; G., Sarti; Ungaro, Rocco. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 252:(1996), pp. 19-24. [10.1016/S0020-1693(96)05293-0]
Luminescence of Eu(3+) and Tb(3+) Complexes of New Macrobicyclic Ligands Derived from p-tert-Butylcalix[4]arene
CASNATI, Alessandro;UNGARO, Rocco
1996-01-01
Abstract
Several new calix[4] arene-crowns have been synthesized and their complexation of the Eu3+ and Tb3+ ions has been studied in order to obtain compounds exhibiting metal luminescence. Whereas ligands 3 and 5 gave no indication of complex formation with lanthanide ions, ligands 2, 4 and 6 were able to sensitize Eu3+ and Tb3+ luminescence. A high metal luminescence quantum yield was obtained for Tb2. The selectivity of these ligands towards alkali metal ions has also been assessed.| File | Dimensione | Formato | |
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