UO22+

excited state quenched by Br–
Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 38: 1329-33 (1976)

UO22+ quenched by Br–
Solvent : H2O, 25ºC, ionic strength 0 (extrap'd, HClO4)

kq = 3.5 x 1010(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence

Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 38: 1329-33 (1976)

UO22+ quenched by Br–
Solvent : H2O, 1 mol/L HClO4, 25ºC

kq = 4.8 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, unknown oxygen content = 6.8 micro sec.

Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 38: 1329-33 (1976)

UO22+ quenched by Br–
Solvent : H2O, 1 mol/L H3PO4, 25ºC

kq = 8.5 x 108(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, unknown oxygen content = 190 micro sec.

Romanovskaya, G.I.; Atabekyan, L.S.; Chibisov, A.K.
Theor. Exp. Chem. 17: 221-5 (1981)

UO22+ quenched by Br–
Solvent : H2O, pH 2.3, ionic strength 0.007

kq = 1.0 x 1010(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 1.5 micro sec.
Comments: S as NO3– salt

Romanovskaya, G.I.; Atabekyan, L.S.; Chibisov, A.K.
Theor. Exp. Chem. 17: 221-5 (1981)

UO22+ quenched by Br–
Solvent : H2O, 1 mol/L HNO3, ionic strength 1

kq = 6.6 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 2.8 micro sec.
Comments: S as NO3– salt

Romanovskaya, G.I.; Atabekyan, L.S.; Chibisov, A.K.
Theor. Exp. Chem. 17: 221-5 (1981)

UO22+ quenched by Br–
Solvent : H2O, 1 mol/L H3PO4, ionic strength 0.09

kq = 1.9 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: laser flash, luminescence, single shot signal
Lifetime in the absence of quencher, air saturated = 160 micro sec.
Comments: S as NO3– salt

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