Rate consts. for electron or energy transfer quenching reactions of *[Eu .cntnd. 2.2.1]3+, *Euaq3+, *[Tb .cntnd. 2.2.1]3+ and *Tbaq3+ by some cyanide complexes were measured in aq. solns. from Stern-Volmer quenching plots of luminescence lifetime data. The effect of encapsulation of Eu3+ and Tb3+ in the 2.2.1 cryptand on the rate consts. of the bimol. quenching processes is examd. Energy transfer quenching occurs much faster for the free ions than for the cryptates, while the rate consts. for electron transfer quenching are practically the same for cryptate and aquo ions. [on SciFinder(R)]
Electron and energy transfer processes of excited states of europium(III) and terbium(III) aquo ions and cryptates
PERATHONER, Siglinda;
1986-01-01
Abstract
Rate consts. for electron or energy transfer quenching reactions of *[Eu .cntnd. 2.2.1]3+, *Euaq3+, *[Tb .cntnd. 2.2.1]3+ and *Tbaq3+ by some cyanide complexes were measured in aq. solns. from Stern-Volmer quenching plots of luminescence lifetime data. The effect of encapsulation of Eu3+ and Tb3+ in the 2.2.1 cryptand on the rate consts. of the bimol. quenching processes is examd. Energy transfer quenching occurs much faster for the free ions than for the cryptates, while the rate consts. for electron transfer quenching are practically the same for cryptate and aquo ions. [on SciFinder(R)]File in questo prodotto:
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