Linear and nonlinear optical properties of polyfluorene derivatives: insights into two- and three-photon absorption - Andrade, Ian Ribeiro de; Nascimento, Diogo Pereira do; Oliveira, Deyvid Souza; Soares, Karynne de Jesus; Santos, Daniela Corrêa; Marques, Maria de Fátima Vieira; De Boni, Leonardo; Cocca, Leandro Henrique Zucolotto (Brazil MRS Meeting, 2025)