Abstract
Two new emissive chemosensors based on coumarin-343 have been synthesized, and their photophysical studies conducted. L1 contains an aza-thio macrocycle ring as the chelating unit, which has great affinity for soft metal ions, whereas L2 is a parent species without macrocyclic unit. Both compounds were separated by column chromatography and characterized by elemental analysis, 1H,13C NMR, UV-vis and FAB mass spectroscopy. The X-ray structures of L1 and L2 and the supramolecular interactions in the solid state are discussed. Preliminary results on the metal-ion sensing effects of the ligands are presented. Titrations with Ag+, Pd2+ and Ni2+ have been studied by UV-vis absorption and fluorescence spectroscopy. © 2009 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 1128-1134 |
Journal | Inorganic Chemistry Communications |
Volume | 12 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Nov 2009 |
Keywords
- Coumarin-343
- Fluorescence
- Molecular chemosensors
- Thio-macrocycles
- Transition metals