Deactivation of excited states of meso-tetrakis(4-N-methyl-pyridiniumyl)porphyrin Bound to DNA - Gandini, Shirley de Cássia Monte; Cavalheiro, Carla Cristina Schmitt; Perussi, Janice Rodrigues; Borissevitch, Iouri E (Encuentro Latinoamericano de Fotoquimica y Fotobiologia, 1997)