TEOTONIO, ERCULES E.S.SILVA JUNIOR, FRANCISCO A.PEREIRA, DARISTON K.S.SANTOS, LIDIANE M.BRITO, HERMI F.FAUSTINO, WAGNER M.FELINTO, MARIA C.F.C.SANTOS, REGINA H.MORENO-FUQUEN, RODOLFOKENNEDY, ALAN R.GILMORE, DENISE2014-07-152014-07-302014-07-152014-07-302010TEOTONIO, ERCULES E.S.; SILVA JUNIOR, FRANCISCO A.; PEREIRA, DARISTON K.S.; SANTOS, LIDIANE M.; BRITO, HERMI F.; FAUSTINO, WAGNER M.; FELINTO, MARIA C.F.C.; SANTOS, REGINA H.; MORENO-FUQUEN, RODOLFO; KENNEDY, ALAN R.; GILMORE, DENISE. Luminescence enhancement of the Tb(III) ion with the thenoytrifluoroacetonate ligant acting as an efficient sensitizer. <b>Inorganic Chemistry Communications</b>, v. 13, n. 12, p. 1391-1395, 2010. DOI: <a href="https://dx.doi.org/10.1016/j.inoche.2010.07.043">10.1016/j.inoche.2010.07.043</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/4580.1387-7003http://repositorio.ipen.br/handle/123456789/4580The synthesis, structural investigation, and photophysical properties of the complex [Tb(TTA)2(NO3) (TPPO)2] are reported. Unlike the analog tris-diketonate complex [Tb(TTA)3(TPPO)2], the new complex presents abnormally high luminescence intensity centered on the terbium ion. Our results clearly suggest a higher energy transfer efficiency from the TTA antenna ligand to the Tb(III) ion in the bis-diketonate complex compared with that in the tris-diketonate complex. A mechanism involving the increasing of triplet state energy when one TTA ligand is replaced by the NO3 − group in the first coordination sphere is suggested and experimentally investigated to explain the anomalous luminescence properties of the new complex [Tb(TTA)2(NO3)(TPPO)2].1391-1395openAccessterbiumluminescencettasensitizersenergy transferArtigo de periódico121310.1016/j.inoche.2010.07.043https://orcid.org/0000-0001-7028-0878