Spectroscopic (absorption, fluorescence and triplet absorption maxima) and photophysical data (including fluorescence (ϕ_F), internal conversion (ϕ_IC) and singlet oxygen sensitization (ϕ_Δ) quantum yields, along with fluorescence lifetimes (τ_F), triplet lifetimes (τ_T) and rate constants, k_F, k_IC and k_ISC) for chlorins 4 and 6–8 in DMSO solution at 293 K.

Chlorin	λ Abs max	λ Fluo max		ϕ F	ϕ IC a	ϕ Δ	τ F	τ T	k F	k NR b	k ISC a	k IC a
	(nm)	(nm)	(nm)				(ns)	(μs)	(ns−1)	(ns−1)	(ns−1)	(ns−1)
4	406, 653	658, 722	460	0.39	0.21	0.40	7.0	68	0.056	0.087	0.057	0.030
6	424, 654	659, 725	495	0.24	0.45	0.31	7.2	35	0.033	0.105	0.043	0.062
7	408, 653	657, 722	460	0.41	0.27	0.32	7.0	46	0.059	0.085	0.046	0.039
8	424, 654	659, 725	495	0.28	0.27	0.45	7.3	50	0.038	0.098	0.061	0.037

^aAssuming ϕ_T ∼ ϕ_Δ and ϕ_IC = 1 − ϕ_F − ϕ_T.

^b k _NR = (1 − ϕ_F)/τ_F.⁵³