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Chemical Partition of the Radiative Decay Rate of Luminescence of Europium Complexes.

Lima NB, Dutra JD, Gonçalves SM, Freire RO, Simas AM - Sci Rep (2016)

Bottom Line: The spontaneous emission coefficient, Arad, a global molecular property, is one of the most important quantities related to the luminescence of complexes of lanthanide ions.Such a chemical partition thus opens possibilities for the comprehension of the role of each of the ligands and their interactions on the luminescence of europium coordination compounds.As an example, we applied the chemical partition to the case of repeating non-ionic ligand ternary complexes of europium(III) with DBM, TTA, and BTFA, showing that it allowed us to correctly order, in an a priori manner, the non-obvious pair combinations of non-ionic ligands that led to mixed-ligand compounds with larger values of Arad.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Química Fundamental, CCEN, UFPE, 50590-470, Recife, PE, Brazil.

ABSTRACT
The spontaneous emission coefficient, Arad, a global molecular property, is one of the most important quantities related to the luminescence of complexes of lanthanide ions. In this work, by suitable algebraic transformations of the matrices involved, we introduce a partition that allows us to compute, for the first time, the individual effects of each ligand on Arad, a property of the molecule as a whole. Such a chemical partition thus opens possibilities for the comprehension of the role of each of the ligands and their interactions on the luminescence of europium coordination compounds. As an example, we applied the chemical partition to the case of repeating non-ionic ligand ternary complexes of europium(III) with DBM, TTA, and BTFA, showing that it allowed us to correctly order, in an a priori manner, the non-obvious pair combinations of non-ionic ligands that led to mixed-ligand compounds with larger values of Arad.

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Chemical partition of Arad′ per ligand for two conformations of complexes of the type Eu(β-diketonate)3(TPPO)2: one with the two TPPOs non-adjacent, and the other with the two TPPOs adjacent to each other.
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f1: Chemical partition of Arad′ per ligand for two conformations of complexes of the type Eu(β-diketonate)3(TPPO)2: one with the two TPPOs non-adjacent, and the other with the two TPPOs adjacent to each other.

Mentions: Figure 1 shows the chemical partition of the radiative decay rate for each of the ligands coordinated to the metal ion for both cases of adjacent and opposite non-ionic ligands for all three TPPO complexes considered.


Chemical Partition of the Radiative Decay Rate of Luminescence of Europium Complexes.

Lima NB, Dutra JD, Gonçalves SM, Freire RO, Simas AM - Sci Rep (2016)

Chemical partition of Arad′ per ligand for two conformations of complexes of the type Eu(β-diketonate)3(TPPO)2: one with the two TPPOs non-adjacent, and the other with the two TPPOs adjacent to each other.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4759827&req=5

f1: Chemical partition of Arad′ per ligand for two conformations of complexes of the type Eu(β-diketonate)3(TPPO)2: one with the two TPPOs non-adjacent, and the other with the two TPPOs adjacent to each other.
Mentions: Figure 1 shows the chemical partition of the radiative decay rate for each of the ligands coordinated to the metal ion for both cases of adjacent and opposite non-ionic ligands for all three TPPO complexes considered.

Bottom Line: The spontaneous emission coefficient, Arad, a global molecular property, is one of the most important quantities related to the luminescence of complexes of lanthanide ions.Such a chemical partition thus opens possibilities for the comprehension of the role of each of the ligands and their interactions on the luminescence of europium coordination compounds.As an example, we applied the chemical partition to the case of repeating non-ionic ligand ternary complexes of europium(III) with DBM, TTA, and BTFA, showing that it allowed us to correctly order, in an a priori manner, the non-obvious pair combinations of non-ionic ligands that led to mixed-ligand compounds with larger values of Arad.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Química Fundamental, CCEN, UFPE, 50590-470, Recife, PE, Brazil.

ABSTRACT
The spontaneous emission coefficient, Arad, a global molecular property, is one of the most important quantities related to the luminescence of complexes of lanthanide ions. In this work, by suitable algebraic transformations of the matrices involved, we introduce a partition that allows us to compute, for the first time, the individual effects of each ligand on Arad, a property of the molecule as a whole. Such a chemical partition thus opens possibilities for the comprehension of the role of each of the ligands and their interactions on the luminescence of europium coordination compounds. As an example, we applied the chemical partition to the case of repeating non-ionic ligand ternary complexes of europium(III) with DBM, TTA, and BTFA, showing that it allowed us to correctly order, in an a priori manner, the non-obvious pair combinations of non-ionic ligands that led to mixed-ligand compounds with larger values of Arad.

No MeSH data available.


Related in: MedlinePlus