Structural characterization of the β phase of polyfluorene obtained by XRD, FTIR, SEM and UV-vis absorption and photoluminescence - Ferreira, André Andrade; Turchetti, Denis Augusto; Santana, Alisson de Jesus; Akcelrud, Leni; Mascarenhas, Yvonne Primerano (Brazilian MRS Meeting, 2019)