Tb3+ [5D4] excited state quenched by Sm3+

Tb³⁺ [⁵D₄] quenched by Sm³⁺ at conc. <= 0.1 mol L^–1
Solvent : Acetone, 20ºC

k_q = 8.5 x 10³(L mol^–1 s^–1)

Mechanism: energy transfer
Experimental methods: conventional flash, luminescence, , luminescence
Lifetime in the absence of quencher, air free = 1060 micro sec.
This value also reported in 68E121

Tb³⁺ [⁵D₄] quenched by Sm³⁺ at conc. <= 0.05 mol L^–1
Solvent : POCl₃/SnCl₄ (9/1), 20ºC

k_q = 2.4 x 10³(L mol^–1 s^–1)
Activation energy = 13 (–15 to +10ºC)(kJ mol^–1)

Mechanism: energy transfer
Experimental methods: conventional flash, luminescence, single shot signal
Lifetime in the absence of quencher, air free = ~3000 micro sec.