Communication: The high photosensitivity of titaniumoxo phthalocyanines makes them suitable for application as charge generation materials, e.g., in photocopiers. The synthesis, photophysical, and photochemical properties of soluble titaniumoxo phthalocyanines containing alkyl and alkoxy substituents (see Figure) in the periphery of the phthalocyanine ring are reported, the photoconductivity and photooxidation behavior being stressed.