High red luminescence intensity under sunlight exposure of a PMMA polymer doped with a tetrakis Eu3+ b-diketonate complex containing a benzimidazolium counterion - Assunção, Israel Pereira de; Costa, Israel Ferreira da; Blois, Lucca; Felinto, Maria Claudia França da Cunha; Deflon, Victor Marcelo; Ando, Rômulo Augusto; Malta, Oscar L; Brito, Hermi Felinto de (RSC Advances, 2025)