Active oxygen generation and photo-oxygenation involving temporfin (m-THPC)

The active oxygen generating ability of m-THPC, including the formation of singlet oxygen and superoxide anion radical species, was studied via spin trapping ESR spectroscopy. The mechanisms and the products associated with the self-sensitized photo-oxygenation of m-THPC in different solvents were also characterised with the aid of quenching experiments in tandem with UV¯visible and HPLC analyses.