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Scientific Article
unige:29225 
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A modified cyclen azaxanthone ligand as a new fluorescent probe for Zn2+ |
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| Published in | Dalton Transactions. 2013, vol. 42, no. 34, p. 12157 | |
| 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. | |
| Identifiers | DOI: 10.1039/c3dt51216a | |
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Article (Published version) (2 MB) - Limited access to UNIGE Other version: http://xlink.rsc.org/?DOI=c3dt51216a |
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| Research group | Groupe Hauser | |
| 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 https://archive-ouverte.unige.ch/unige:29225 |
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