Photo-degradation of fluorene and phenylene-vynylene based polymers as studied by optical and nuclear magnetic resonance spectroscopies - Bezerra, Wesley de S.; Ferreira, Giovana R.; Bianchi, Rodrigo F.; Nunes, Luiz Antônio de Oliveira; Azevêdo, Eduardo Ribeiro de (Simpósio Internacional de Iniciação Científica da Universidade de São Paulo - SIICUSP, 2010)