Temperature dependence of molecular dynamics and supramolecular aggregation in MEH-PPV films: a solid-state NMR, X-ray and fluorescence spectroscopy study - Souza, A. A.; Cossiello, R. F.; Plivelic, T. S.; Mantovani, G. L.; Faria, Gregório Couto; Atvars, T. D. Z.; Torriani, I. L.; Bonagamba, Tito José; Azevêdo, Eduardo Ribeiro de (European Polymer Journal, 2008)