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A modified cyclen azaxanthone ligand as a new fluorescent probe for Zn2+

Publié dansDalton transactions, vol. 42, no. 34, 12157
Date de publication2013
Résumé

A new cyclen derivative L, bearing a methyl-chromeno-pyridinylidene hydrazone moiety, was synthesized and studied in MeOH, as potential fluorescent “OFF-on-ON” sensors for Zn(II). Photocphysical properties of this ligand being PET regulated, L was only weakly emissive in the absence of metal ions (OFF). L fluorescence was increased modestly upon addition of one equivalent of Zn(II), and further increased upon addition of a second equivalent. Therefore, Zn:L behaved as a highly sensitive ON sensor for zinc. This efficiency was correlated to Zn(II) coordination via the hydrazone moiety of the fluorophore, producing an efficient CHelation-Enhanced Fluorescence (CHEF) effect. A complementary theoretical study carried out with DFT calculations further elucidated of the optical properties.

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Citation (format ISO)
NOURI, Hela et al. A modified cyclen azaxanthone ligand as a new fluorescent probe for Zn<sup>2+</sup>. In: Dalton transactions, 2013, vol. 42, n° 34, p. 12157. doi: 10.1039/c3dt51216a
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ISSN du journal1477-9226
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Création09.08.2013 16:01:00
Première validation09.08.2013 16:01:00
Heure de mise à jour14.03.2023 20:22:22
Changement de statut14.03.2023 20:22:21
Dernière indexation16.01.2024 02:01:03
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