Question

1. The phosphorescence of excited Ru(bpy)₃ is quenched in the presence of dissolved molecular oxygen. Below is the data for the phosphorescence lifetime with various concentrations of dissolved oxygen. Determine the rate of quenching for this process.

[O2]	0	0.5	1.0	6.0	10.0
t (ns)	24.0	0.0852	0.0427	0.0071	0.0043

Answer 1