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Nano‐Nonanuclear Mixed‐Lanthanide Clusters [Eu 9– x Tb x ] Featuring Tunable Dual Luminescence Properties
Author(s) -
Guettas Djamila,
Balogh Cristina M.,
Sonneville Camille,
Malicet Ylane,
Lepoivre Florian,
Onal Emel,
Fateeva Alexandra,
Reber Christian,
Luneau Dominique,
Maury Olivier,
Pilet Guillaume
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600412
Subject(s) - lanthanide , luminescence , chemistry , spectroscopy , ion , inductively coupled plasma , powder diffraction , stoichiometry , analytical chemistry (journal) , crystallography , nuclear chemistry , materials science , plasma , organic chemistry , physics , optoelectronics , quantum mechanics
Five Tb 3+ /Eu 3+ mixed nonanuclear clusters with the general formula [Eu 9– x Tb x (acac) 16 (µ 3 ‐OH) 8 (µ 4 ‐O)(µ 4 ‐OH)] ([Eu 9– x Tb x ], x = 0.9–8.1, acac = acetylacetonate) were synthesized. Characterization by powder X‐ray diffraction (PXRD), energy‐dispersive X‐ray spectroscopy (EDS) and inductively coupled plasma optical emission spectroscopy (ICP‐OES) highlight a near‐perfect match between the amounts of Tb 3+ and Eu 3+ ions input in the reaction mixture and the amounts in the clusters. The luminescence properties of these [Eu 9– x Tb x ] clusters were investigated thoroughly in the solid state, and a strong energy transfer from the Tb 3+ to Eu 3+ emitters was evidenced. Thus, these nano‐nonanuclear 4f clusters, which can be viewed as square pyramids that share one top, exhibit dual luminescence that can be adjusted by controlling the ratio of the lanthanide ions within the crystal architecture.