Table 3. Rate Constants Taken from Stern–Volmer Analysis of Kinetic Data in Acetonitrilea.
BMQ+ | MQ+ | 3-acetylpyridine | |
---|---|---|---|
[(bpy)2Ru(4,4′-dhbpy)]2+ | 2.9 × 108 M–1 s–1 | 6.7 × 107 M–1 s–1 11 | – |
[(dpab)2Ru(4,4′-dhbpy)]2+ | 1.6 × 107 M–1 s–1 | 1.1 × 107 M–1 s–1 | 1.3 × 107 M–1 s–1 |
For quenching rate constants with BMQ+ and MQ+ listed in the table, the total ion concentration of the solution was kept constant at 200 mM by addition of tetrabutyl ammonium hexafluorophosphate.