4. Kinetics of photophysical processes
The kinetics of the various energy relaxation processes absorbed by the molecule are presented in this chapter. Knowledge of the kinetics of energy relaxation processes by radiative and non-radiative pathways enables us to trace the fluorescence quantum yield, taking into account the competition between these energy relaxation processes.
4.1 Lifetimes of excited states
Once excited by incident photons, the molecule will naturally return to a state of thermodynamic equilibrium, with a time constant known as its "lifetime". This lifetime is linked, on the one hand, to the level excited by the light and, on the other, to the physical phenomena that allow the molecule to return to equilibrium. If we consider fluorescence as the only way to relax energy so that the...
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Kinetics of photophysical processes
Fluorescent tracer family
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