Atilla, D., Saydan, N., Durmus, M., Gurek, A., Khan, T., Ruck, A., Walt, H., Nyokong, T. & Ahsen, V. (2007) Synthesis and photodynamic potential of tetra- and octa-triethyleneoxysulfonyl substituted zinc phthalocyanines. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY , 186(2-3), 298-307.