Excited-state absorption investigation of a cationic porphyrin derivative - Maximiano, R. V.; Piovesan, E.; Zílio, Sérgio Carlos; Machado, A. E. H.; De Paula, R.; Cavaleiro, J. A. S.; Borissevitch, Iouri; Ito, Amando Siuiti; Gonçalves, P. J.; Barbosa Neto, N. M. (Journal of Photochemistry and Photobiology A, 2010)