Abstract
Fluoroionophores consisting of coumarin-153 linked to mono- and diaza-crown ethers are able to complex transition metal cations (Ni2+, Zn2+, Cd2+) and Pb2+, with concomitant large changes in photophysical properties. The stability constants in acetonitrile are higher than 3×106 M −1 except for Ni2+.
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Bourson, J., Badaoui, F. & Valeur, B. Coumarinic fluorescent chemosensors for the detection of transition metal ions. J Fluoresc 4, 275–277 (1994). https://doi.org/10.1007/BF01881438
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DOI: https://doi.org/10.1007/BF01881438