Europium compounds containing 2-acyl-1,3-indandionate and phosphine oxide ligands: synthesis and energy transfer mechanism - Santos, Paulo R; Lira, J. N; Rezende Filho, J. B. M; Vale, J. A; Faustino, Wagner de Mendonça; Brito, Hermi Felinto de; Felinto, Maria Claudia França da Cunha; Teotonio, Ercules Epaminondas Sousa (Brazilian MRS Meeting, 2013)