A Singlet Oxygen Photogeneration and Luminescence Study of Unsymmetrically Substituted Mesoporphyrinic Compounds

Table 4

Singlet oxygen quantum yields, Φ_Δ, and photodynamic efficiency, α, for the series of unsymmetrically substituted mesoporphyrins in benzene for air equilibrated samples, at room temperature.

Compound	Slope	ΦΔ	𝛼 (mole/second) at 𝜆axc
			633 nm	650 nm
TPP^∗	0.84	0.66±0.05	9.99	43.07
TPPOHO	0.87	0.69±0.04	9.38	53.73
TPPOHM	0.79	0.62±0.04	8.32	31.78
TPPOHP	0.93	0.73±0.03	10.58	40.51
TBP	0.96	0.76 ± 0.03	10.49	20.04
TBPOHO	0.93	0.73±0.02	5.19	18.31
Phz^∗	1.05	0.83	—	—

∗Used as reference compounds (𝜙_{ΔPhz/Benzene} = 0.83; 𝜙_{ΔTPP/Benzene} = 0.66 [44].)