Synthesis and Photophysical Properties of Tetra- and Octasubstituted Phosphorous Oxide Triazatetrabenzcorrole Photosensitizers

Table 3

Rate contacts for the photophysical processes occurring in PTBC derivatives in DMSO.

Compound	^1kF(s^-1) (×10^7)	(kISC(S−T))(× 10^9)	(kISC(S−T))(s^-1)	^2KIC(s^-1) (×10^8)
PTBC (7)	2.9	—	—	2.3
PTBrTBC (9)	10	32	9.5 × 10^2	31
PTClTBC (11)	7.8	9.2	1.6 × 10^3	6.3
POClTBC (13)	5.5	6.7	3.6 × 10^3	4.4

¹k_F is the rate constant for fluorescence. Values calculated using k_𝐹=Φ_𝐹/𝜏_𝐹.
²k_IC is the rate constant for internal conversion. Values calculated using k_IC=Φ_IC/𝜏_𝐹.