Table 2. Kinetic Model Parameters.

[3S*]i	2.4 μMa
τt	18 nsb
τs	6.7 nsc
Φf	∼0.25a
kf	Φf/τs
kic	(1 – Φf)/τs
kt	1/τt
ktta	9.5 × 108 M–1 s–1 d
kset	1.7 × 107 M–1 s–1 a
ksetO2	1.0 × 107 M–1 s–1 b
ketΔ	1.2 × 1010 M–1 s–1 e
kqp	1.3 × 109 M–1 s–1 f
kqf	0 M–1 s–1 g
[3O2]i	8.69 mMh

^aGholizadeh et al.¹⁵

^bFitted to Figure 5b of Gholizadeh et al.¹⁵

^cGholizadeh et al.²⁷

^dAs determined in Figures 4 and 5, in agreement with the fit to Gholizadeh et al. Figure 5b¹⁵

^eDiffusion-limited.²²

^fSpin-statistical.²⁰

^gFluorescence quenching by ³O₂ is omitted for this acceptor since ¹A* →³A* ≤ 0.91 eV.

^hCalculated from the solubility of oxygen in toluene at 298 K.²⁸