Photophysical and kinetic parameters of PCs and 1.

	λ abs a (nm, ε/104 M−1 cm−1)	E S1 b (eV)	λ em c (nm)	τ obs d (ns)	Φ PL e	k r f (107 s−1)	k nr g (107 s−1)	k ISC h (107 s−1)	J i (1012 M−1 cm−1 nm4)	k Q j (108 M−1 s−1)	k PeT k (108 M−1 s−1)	k CR l (108 M−1 s−1)
A	294 (4.40)	2.74	489	11	0.21	2.0	7.5	1.7	1.5	1.3	1.3	6.9
B	303 (1.29)	2.86	484	8.8	0.20	2.3	9.1	—	6.2	1.8	1.8	0.66
C	290 (1.88)	2.78	491	10	0.25	2.6	7.7	0.63	1.2	1.4	1.4	1.8
D	302 (2.00)	2.93	539	1.2	0.0045	0.37	83	—	—	—	—	0.66
E	290 (1.39)	2.83	479	12	0.47	4.0	4.6	—	2.5	1.5	1.6	1.9
F	290 (1.43)	2.85	478	8.9	0.21	2.3	8.9	10	2.0	1.2	1.3	3.8
G	378 (1.38)	2.81	486	8.5	0.23	2.7	9.1	—	—	—	—	4.1
H	412 (1.57)	2.73	462	3.4	0.39	11	18	1.0	2.7	2.7	2.9	9.3
1	316 (0.42)	2.69	365	—	—	—	—	—	—	—	—	—

^aAbsorption peak wavelength (molar absorbance).

^bThe first singlet state energy was determined from the UV-Vis absorption spectra onset wavelengths.

^cEmission peak wavelength.

^dPhotoluminescence lifetime determined through nonlinear least-squares fitting to a mono-exponential decay model of decay traces after picosecond pulsed 345 nm excitation.

^ePhotoluminescence quantum yield was determined using 9,10-diphenylanthracene as a standard (toluene, Φ_PL = 1.00).

^fRadiative rate constant, k_r = Φ_PL/τ_obs.

^gNonradiative rate constant, k_nr = (1 − Φ_PL)/τ_obs.

^hIntersystem crossing rate.

ⁱSpectral overlap is integral between the absorption spectrum of the substrate and the photocatalyst emission spectrum.

^jThe bimolecular quenching rate constant was determined from pseudo-first-order kinetic analyses of the photocatalyst fluorescence quenching rates with the substrate.

^kThe rate constant for the bimolecular photoinduced electron transfer rate was determined through the relationship k_PeT = −(k_Q × k_diff)/(k_Q − k_diff), where k_diff is the 1,4-dioxane diffusion rate constant at 298 K, estimated from the Stokes–Einstein–Smoluchowski equation.

^lThe rate constant for charge recombination within the radical ion pair [PC˙⁻⋯1˙⁺] to form ³1*.