Mono‐PEGylated Zinc(II) Phthalocyanines: Preparation, Nanoparticle Formation, and In Vitro Photodynamic Activity

PEGged! A series of mono-PEGylated zinc(II) phthalocyanines for photodynamic therapy with singlet oxygen have been prepared and formulated in aqueous media with different methods. The system based on silica nanoparticles exhibits remarkably high stability and in vitro photocytotoxicity.