Fig. 2. (A) Preparation of nanoparticles (OctaNPs) from octaphyrin 4. (B) TEM image of OctaNPs. (C and D) Size and zeta potential distribu-tion of OctaNPs. (E and F) Absorbance spectra of 4 in THF at varying apparent39 pH values and OctaNPs in aqueous solution at varying pH values. pH was adjusted through the careful addition of 1 M HCl. (G) Stability studies of octaphyrin 4 in THF and OctaNPs in neutral aqueous media (pH = 7.40) that involved monitoring over the course of 7 days at room temperature.
