2 documents found, page 1 of 1
New Europium(III)-TTA Complex Containing 2-Pyrrolidone as Coligand to Applicati...
Macrino,Clebson J.; Borges,Alex S.; Cunha Neto,Álvaro; Lacerda Jr.,Valdemar; Romão,WandersonThis work describes the synthesis and application of an europium(III) complex, [Eu(TTA)3(2-pyr) (H2O)], containing 2-thenoyltrifuoroacetonate (TTA) and 2-pyrrolidone (2-pyr) as ligands, obtained as white solid and soluble in ethanol. In solution, the complex showed red emission, characteristic of the EuIII emission in the solid state (λexc = 375 nm and λem = 612 nm). The complex was tested with PbII, CdII, and ...
Synthesis, Characterization, and Application of Europium(III) Complexes as Lumi...
Macrino,Clebson J.; Silva,Elias M.; Cunha,Victor R.; Fonseca,Victor R.; Cunha Neto,Álvaro; Araújo,Joyce R.; Lacerda Jr.,Valdemar; Romão,WandersonIn this work, three complexes were synthesized from the trivalent europium ion (EuIII), using the picrate anion (pic), and delta-valerolactam (DVL), epsilon-caprolactam (EPK), and oenantholactam (OEN). The synthesized complexes [Eu(pic)3·(DVL)3], [Eu(pic)3·(EPK)3], and [Eu(pic)3·(OEN)3] were studied as luminescent markers for application as security elements in Brazilian banknotes. All complexes showed red colo...