Synthesis, Characterization, and In Vitro Photodynamic Activity of Novel Amphiphilic Zinc(II) Phthalocyanines Bearing Oxyethylene-Rich Substituents

Table 2

Comparison of the IC₅₀ valuesa of phthalocyanines 4, 5, and 8 against HT29 and HepG2.

Compound	For HT29 (M)	For HepG2 (M)
4	0.02	0.03
5	0.36	0.39
8	0.15	0.49

𝜇Defined as the dye concentration required to kill 50% of the cells.