Abstract
The 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 TEA 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)].
| Original language | English |
|---|---|
| Pages (from-to) | 1391-1395 |
| Number of pages | 5 |
| Journal | Inorganic Chemistry Communications |
| Volume | 13 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2010 |
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Keywords
- terbium
- luminescence
- thenoyltrifluoroacetonate
- sensitizer
- energy transfer
- intramolecular energy-transfer
- complexes
- photoluminescent
- excitation
- spectra
Cite this
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Luminescence enhancement of the Tb(III) ion with the thenoyltrifluoroacetonate ligand acting as an efficient sensitizer. / Teotonio, Ercules E. S.; Silva, Francisco A.; Pereira, Dariston K. S.; Santo, Lidiaine M.; Brito, Hermi F.; Faustino, Wagner M.; Felinto, Maria Claudia F. C.; Santos, Regina Helena; Moreno-Fuquen, Rodolfo; Kennedy, Alan R.; Gilmore, Denise.
In: Inorganic Chemistry Communications, Vol. 13, No. 12, 12.2010, p. 1391-1395.Research output: Contribution to journal › Article
TY - JOUR
T1 - Luminescence enhancement of the Tb(III) ion with the thenoyltrifluoroacetonate ligand acting as an efficient sensitizer
AU - Teotonio, Ercules E. S.
AU - Silva, Francisco A.
AU - Pereira, Dariston K. S.
AU - Santo, Lidiaine M.
AU - Brito, Hermi F.
AU - Faustino, Wagner M.
AU - Felinto, Maria Claudia F. C.
AU - Santos, Regina Helena
AU - Moreno-Fuquen, Rodolfo
AU - Kennedy, Alan R.
AU - Gilmore, Denise
PY - 2010/12
Y1 - 2010/12
N2 - The 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 TEA 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)].
AB - The 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 TEA 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)].
KW - terbium
KW - luminescence
KW - thenoyltrifluoroacetonate
KW - sensitizer
KW - energy transfer
KW - intramolecular energy-transfer
KW - complexes
KW - photoluminescent
KW - excitation
KW - spectra
UR - http://www.scopus.com/inward/record.url?scp=78649324701&partnerID=8YFLogxK
U2 - 10.1016/j.inoche.2010.07.043
DO - 10.1016/j.inoche.2010.07.043
M3 - Article
VL - 13
SP - 1391
EP - 1395
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
SN - 1387-7003
IS - 12
ER -