Scientific article
English

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

Published inDalton transactions, vol. 42, no. 34, 12157
Publication date2013
Abstract

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 (ISO format)
NOURI, Hela et al. A modified cyclen azaxanthone ligand as a new fluorescent probe for Zn2+. In: Dalton transactions, 2013, vol. 42, n° 34, p. 12157. doi: 10.1039/c3dt51216a
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Additional URL for this publicationhttp://xlink.rsc.org/?DOI=c3dt51216a
Journal ISSN1477-9226
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Creation09/08/2013 16:01:00
First validation09/08/2013 16:01:00
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