UO22+ excited state quenched by Eu3+

UO₂²⁺ quenched by Eu³⁺
Solvent : H₂O, 1 mol/L H₃PO₄, 25ºC

k_q = 1.0 x 10⁶(L mol^–1 s^–1)

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

UO₂²⁺ quenched by Eu³⁺ at conc. 0.0018-0.0051 mol L^–1
Solvent : H₂O, 0.5 mol/L H₃PO₄

k_q = 6.8 x 10⁶(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single photon counting
Lifetime in the absence of quencher, unknown oxygen content = 190 micro sec.

UO₂²⁺ quenched by Eu³⁺ at conc. (8.8-51) x 10^–4 mol L^–1
Solvent : H₂O, 1 mol/L H₃PO₄

k_q = 4.2 x 10⁶(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single photon counting
Lifetime in the absence of quencher, unknown oxygen content = 190 micro sec.

UO₂²⁺ quenched by Eu³⁺ at conc. 0.0018-0.0051 mol L^–1
Solvent : H₂O, 2 mol/L H₃PO₄

k_q = 2.5 x 10⁶(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single photon counting
Lifetime in the absence of quencher, unknown oxygen content = 210 micro sec.

UO₂²⁺ quenched by Eu³⁺ at conc. 0.0018-0.0051 mol L^–1
Solvent : H₂O, 5 mol/L H₃PO₄

k_q = 1.0 x 10⁶(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: laser flash, luminescence, single photon counting
Lifetime in the absence of quencher, unknown oxygen content = 210 micro sec.

UO₂²⁺ quenched by Eu³⁺ at conc. <= 0.005 mol L^–1
Solvent : H₂SO₄ (66%), 20ºC

k_q = 1.5 x 10⁶(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 42 micro sec.