en
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.

Research group
Citation (ISO format)
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
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal1477-9226
635views
0downloads

Technical informations

Creation08/09/2013 4:01:00 PM
First validation08/09/2013 4:01:00 PM
Update time03/14/2023 8:22:22 PM
Status update03/14/2023 8:22:21 PM
Last indexation01/16/2024 2:01:03 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack