Fig. 3. (A) Reduction in light intensity of various wavelengths (405, 530, and 730 nm) after passing through 3.0 and 6.0 mm pig skin. (B and C) ln([M]0/[M]t) versus irradiation time for zinc meso-tetra(N-methyl-4-pyridyl)porphine tetrachloride (ZnTMPyP) mediated photo-RAFT polymerization: (B) under violet light (λmax = 405 nm; I = 45 mW cm−2) and (C) green light (λmax = 530 nm; I = 72 mW cm−2) irradiation passing through 3.0 mm pig skin with a reaction stoichiometry of [DMA] : [CTCPA] : [ZnPcS4−] = 200 : 1 : 0.01 at [DMA]/[water] = 50/50 (v/v) without deoxygenation. (D) ln([M]0/[M]t) versus irradiations time plots of ZnPcS4− mediated photo-RAFT polymerization under NIR light (λmax = 730 nm; I = 60 mW cm−2) irradiation after passing through various thicknesses of pig skin with a reaction stoichiometry of [DMA] : [CTCPA] : [TEOA] : [ZnPcS4−] = 200 : 1 : 4 : 0.01 at [DMA]/[water] = 50/50 (v/v) without deoxygenation.
