Stem-Volmer kinetics

Quenching constant See quencher, quenching, Stem-Volmer kinetic relationships. 

Fig. 7. Decay rate versus pressure for the state of SO2 taken from Su et al. The quenchers are CO2 (circles), CX) (squares) and N2 (triangles). The lines a, b, and c are the linear Stem-Volmer kinetics extrapolated from the low-pressure region for CO2, CO, and N2, respectively.

Fig. 8. Higher pressure data of Strickler and Rudolph for the decay rate of the SO ( Bj) state as a function of the pressure of (open circles) and CO2 (closed circles). Dashed lines give the linear Stem-Volmer kinetics extrapolated from the low-pressure region.

The concept of quasi-three-dimensionil diffusion in membranes is illustrated by pyrene exclmer fonnation. Although excimer formation is not strictly quenching, the monomer emission is decreased by diffusive encounters of excited memomers with ground-atate monomers. Hence, the quenching of the monomer emission is described by Stem-Volmer kinetics. 

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