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A Bipyridine‐Based “Naked‐Eye” Fluorimetric Cu 2+ Chemosensor
Author(s) -
Reynal Anna,
Etxebarria Juan,
Nieto Natalia,
Serres Sílvia,
Palomares Emilio,
VidalFerran Anton
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900887
Subject(s) - chemistry , naked eye , luminescence , fluorescence , photochemistry , steric effects , detection limit , aqueous solution , absorption spectroscopy , bipyridine , molecule , selectivity , spectroscopy , fluorescence spectroscopy , absorption (acoustics) , inorganic chemistry , organic chemistry , crystal structure , catalysis , physics , optoelectronics , chromatography , quantum mechanics , acoustics
A series of six 2,2′‐bipyridine‐3,3′‐diols with different substituents have been synthesized and characterized. The designed ligands show fluorescence in the visible part of the spectra, but only the luminescence of the less sterically hindered molecules is quenched in the presence of Cu 2+ ions. Selectivity and sensitivity of the chemosensors have been tested by absorption and luminescence spectroscopy in aqueous solutions, with a dynamic working range of 0.7–30 μ M and a limit of detection of 0.04 ppm (mg L –1 ).