Excited state properties of meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS4) J aggregate - Barbosa Neto, Newton Martins; Parra, Gustavo Gimenez; Corrêa, Daniel Souza; De Boni, Leonardo; Mendonça, Cleber Renato; Zílio, Sérgio Carlos; Borissevitch, Iouri; Gonçalves, Pablo José (Brazilian MRS Meeting, 2015)