The syntheses and luminescent properties of Eu-III and Tb-III cryptates insolution

The syntheses, characterization and luminescent properties of europium(III) and terbium(III) cryptates synthesized by [2+3] condensation of tris(2-ami noethyl)amine with 2,6-diformyl-4-R-phenol (R = Cl, F, tBu) in the presence of Eu3+ Or Tb3+ have been reported. The crystal structure of the euro-plum cryptate (R = Cl) shows that the coordination number of the Eu-III ion is nine and that a guest water molecule is encapsulated in the cavity. The cry ptates have a high stability which confers good fluorescence properties in solution.