Journal
INORGANICA CHIMICA ACTA
Volume 360, Issue 3, Pages 1200-1208Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2006.11.006
Keywords
dansyl; polyamine ligands; pyridine ligands; Zn(II) complexes; chemosensors; fluorescence
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The synthesis, potentiometric studies and photophysical properties of two new polyamine ligands (L1 and L2) possessing the dansyl chromophore were studied in aqueous 0.15 M NaCl. The compounds show the absorption and emissions bands characteristic of the dansylamide fluorophore and both present intramolecular excited state proton transfer at intermediate pH ranges. One of the ligands (L2) strongly coordinates Zn(II) leading to fluorescence quenching. A model compound (L3) of the dansyl moiety was also investigated. (c) 2006 Elsevier B.V. All rights reserved.
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