Dual mechanism of energy transfer in benzoate sensitized luminescence of Eu3+ and Tb3+

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1996
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Schrott, Werner
Büchner, H.
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Journal of Information Recording. 1996, 23, pp. 79-84
Zusammenfassung

Benzoate has been studied as a sensitizer of Eu3+ and Tb3+ luminescence in aqueous and methanolic solution. In solutions with low concentrations of the lanthanide ions the mechanism is dynamic involving free benzoate triplets. At higher concentrations a switchover to a static mechanism involving complexed benzoate occurs. In the case of Eu3+ the dynamic sensitization is 3 times as efficient as the static one, which is explained by CT-quenching of singlet benzoate in the complex. The emission quantum yield of Eu3+ and Tb3+ benzoate complexes increases with the number of benzoate ligands.

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Fachgebiet (DDC)
540 Chemie
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electronic energy transfer, luminescence, rare earth ion complexes
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ISO 690SCHROTT, Werner, H. BÜCHNER, Ulrich STEINER, 1996. Dual mechanism of energy transfer in benzoate sensitized luminescence of Eu3+ and Tb3+. In: Journal of Information Recording. 1996, 23, pp. 79-84
BibTex
@article{Schrott1996mecha-9543,
  year={1996},
  title={Dual mechanism of energy transfer in benzoate sensitized luminescence of Eu3+ and Tb3+},
  volume={23},
  journal={Journal of Information Recording},
  pages={79--84},
  author={Schrott, Werner and Büchner, H. and Steiner, Ulrich}
}
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    <dcterms:abstract xml:lang="eng">Benzoate has been studied as a sensitizer of Eu3+ and Tb3+ luminescence in aqueous and methanolic solution. In solutions with low concentrations of the lanthanide ions the mechanism is dynamic involving free benzoate triplets. At higher concentrations a switchover to a static mechanism involving complexed benzoate occurs. In the case of Eu3+ the dynamic sensitization is 3 times as efficient as the static one, which is explained by CT-quenching of singlet benzoate in the complex. The emission quantum yield of Eu3+ and Tb3+ benzoate complexes increases with the number of benzoate ligands.</dcterms:abstract>
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