Near infrared spectroscopic properties of new β-diketonates lanthanide complexes with different phosphine oxide ligands - Moura, Jandeilson de Lima; Costa, Israel Ferreira da; Santos, Paulo Roberto da Silva; Teotonio, Ercules Epaminondas de Sousa; Faustino, Wagner de Mendonça; Brito, Hermi Felinto de; Felinto, Maria Claudia França da Cunha; Burrow, Robert A (International Conference on Luminescence, 2017)