Effects of metallization on photophysical characteristics of meso-tetra (sulphonatophenyl)(TPP'S IND.4') and mesotetrakis methylpyridiniumyl (TMPyP) porphyrins - Gonçalves, P. J.; Franzen, P. L.; De Boni, Leonardo; Borissevitch, Iouri; Zílio, Sérgio Carlos (International Conference on Porphyrins and Phthalocyanines, 2008)