in this article, we describe a photosensitizer (ps) whose ability to generate singlet oxygen (1o2) and fluorescence emission has been designed as tumor responsive. more specifically, the ps consists of a silicon phthalocyanine (sipc) core, axially substituted with two subphthalocyanine (subpc) units, covalently linked by a disulfide linker, which is cleavable in the presence of a strong reducin...
