UO22+

excited state quenched by Tl+
Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 36: 385-9 (1974)

UO22+ quenched by Tl+ at conc. (1-20) x 10–5 mol L–1
Solvent : H2O, 0.5 mol/L H2SO4, 10ºC

kq = 4.1 x 109(L mol–1 s–1)


Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 27 micro sec.
Comments: S as SO42– salt

Deschaux, M.; Marcantonatos, M.D.
J. Inorg. Nucl. Chem. 43: 2915-7 (1981)

UO22+ quenched by Tl+ at conc. <= 1.5 x 10–4 mol L–1
Solvent : H2O, 0.01 mol/L HNO3, 22ºC, ionic strength 0.034

kq = 1.7 x 109(L mol–1 s–1)


Experimental methods: lifetime quenching (method not specified)
Lifetime in the absence of quencher, unknown oxygen content = 1.6 micro sec.

Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 36: 385-9 (1974)

UO22+ quenched by Tl+ at conc. (1-20) x 10–5 mol L–1
Solvent : H2O, 0.5 mol/L H2SO4, 22ºC

kq = 5.2 x 109(L mol–1 s–1)


Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 12 micro sec.
Comments: S as SO42– salt

Moriyasu, M.; Yokoyama, Y.; Ikeda, S.
J. Inorg. Nucl. Chem. 39: 2205-9 (1977)

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

kq = 4.5 x 109(L mol–1 s–1)

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

Moriyasu, M.; Yokoyama, Y.; Ikeda, S.
J. Inorg. Nucl. Chem. 39: 2205-9 (1977)

UO22+ quenched by Tl+
Solvent : H2O, 1 mol/L H2SO4, 25ºC

kq = 5.4 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air saturated = 11 micro sec.

Moriyasu, M.; Yokoyama, Y.; Ikeda, S.
J. Inorg. Nucl. Chem. 39: 2205-9 (1977)

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

kq = 6.1 x 109(L mol–1 s–1)

Mechanism: reductive electron transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air saturated = 180 micro sec.

Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 36: 385-9 (1974)

UO22+ quenched by Tl+ at conc. (1-20) x 10–5 mol L–1
Solvent : H2O, 0.5 mol/L H2SO4, 30ºC

kq = 6.8 x 109(L mol–1 s–1)


Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 6.8 micro sec.
Comments: S as SO42– salt

Yokoyama, Y.; Moriyasu, M.; Ikeda, S.
J. Inorg. Nucl. Chem. 36: 385-9 (1974)

UO22+ quenched by Tl+ at conc. (1-20) x 10–5 mol L–1
Solvent : H2O, 0.5 mol/L H2SO4, 40ºC

kq = 8.6 x 109(L mol–1 s–1)


Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 3.5 micro sec.
Comments: S as SO42– salt

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

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

kq = 1.6 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 = 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 Tl+
Solvent : H2O, 1 mol/L HNO3, ionic strength 1

kq = 2.3 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 Tl+
Solvent : H2O, 1 mol/L H3PO4, ionic strength 0.09

kq = 4.0 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

back...