The synthesis of a new DO3A-based macrocyclic ligand bearing a 8-hydroxyquinoline residue together with the prepn. of its Eu3+ and Er3+ neutral complexes are described. In a previous report [F. Rizzo, A. Papagni, F. Meinardi, R. Tubino, M. Ottonelli, G.F. Musso, G. Dellepiane, Synth. Met. 147 (2004) 143], we have shown that lanthanide complexes display very high stability combined with a good luminescence in aq. soln. under UV radiation, which indicate an energy transfer process from the excited 8-hydroxyquinoline moiety to the metal. In this work, we correlate the ability to transfer the energy from the sensitizer to lanthanide ion with pH behavior of the antenna. Furthermore, the variation of pH in Eu3+ complex supports the hypothesis of presence of charge-transfer transitions. The good soly. and sensitized emission in different solvents (org. and water) are very important aspects for their technol. applications as luminescent probes or NIR-emitting devices.

Rizzo, F., Meinardi, F., Tubino, R., Pagliarin, R., Dellepiane, G., & Papagni, A. (2009). Synthesis of 8-hydroxyquinoline functionalised DO3A ligand and Eu(III) and Er(III) complexes: Luminescence properties. SYNTHETIC METALS, 159(5-6), 356-360 [10.1016/j.synthmet.2007.11.013].

Synthesis of 8-hydroxyquinoline functionalised DO3A ligand and Eu(III) and Er(III) complexes: Luminescence properties

MEINARDI, FRANCESCO;TUBINO, RICCARDO;PAPAGNI, ANTONIO
2009

Abstract

The synthesis of a new DO3A-based macrocyclic ligand bearing a 8-hydroxyquinoline residue together with the prepn. of its Eu3+ and Er3+ neutral complexes are described. In a previous report [F. Rizzo, A. Papagni, F. Meinardi, R. Tubino, M. Ottonelli, G.F. Musso, G. Dellepiane, Synth. Met. 147 (2004) 143], we have shown that lanthanide complexes display very high stability combined with a good luminescence in aq. soln. under UV radiation, which indicate an energy transfer process from the excited 8-hydroxyquinoline moiety to the metal. In this work, we correlate the ability to transfer the energy from the sensitizer to lanthanide ion with pH behavior of the antenna. Furthermore, the variation of pH in Eu3+ complex supports the hypothesis of presence of charge-transfer transitions. The good soly. and sensitized emission in different solvents (org. and water) are very important aspects for their technol. applications as luminescent probes or NIR-emitting devices.
Articolo in rivista - Articolo scientifico
DO3A-based macrocyclic ligand, Eu3+ and Er3+ neutral complexes, energy transfer phenomena, visible and infrared emission, pH-dipendent emission
English
Rizzo, F., Meinardi, F., Tubino, R., Pagliarin, R., Dellepiane, G., & Papagni, A. (2009). Synthesis of 8-hydroxyquinoline functionalised DO3A ligand and Eu(III) and Er(III) complexes: Luminescence properties. SYNTHETIC METALS, 159(5-6), 356-360 [10.1016/j.synthmet.2007.11.013].
Rizzo, F; Meinardi, F; Tubino, R; Pagliarin, R; Dellepiane, G; Papagni, A
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/5644
Citazioni
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 15
Social impact