UO22+

excited state quenched by Ascorbic acid
Rygalov, L.N.; Chibisov, A.K.; Karyakin, A.V.; Benzrogova, E.V.; Myasoedov, B.F.; Nemodruk, A.A.
Theor. Exp. Chem. 8: 399-403 (1972)

UO22+ quenched by Ascorbic acid at conc. 5 x 10–5 mol L–1
Solvent : H2O, 0.5 mol/L H3PO4

kq = 1 x 108(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , absorption, single shot signal

Sergeeva, G.I.; Chibisov, A.K.; Levshin, L.V.; Karyakin, A.V.
J. Photochem. 5(3/4): 253-64 (1976)

UO22+ quenched by Ascorbic acid
Solvent : H2O, 1 mol/L H3PO4

kq = 1.8 x 108(L mol–1 s–1)

Mechanism: reductive electron transfer (29%)
Experimental methods: conventional flash, absorption, single shot signal
Lifetime in the absence of quencher, air saturated = 170 micro sec.

back...