New Fluorescent Rhodamine Hydrazone Chemosensor for Cu(II) with High Selectivity and Sensitivity
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- 1 June 2006
- journal article
- letter
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 8 (13), 2863-2866
- https://doi.org/10.1021/ol0610340
Abstract
A new fluorescent probe, salicylaldehyde rhodamine B hydrazone (1), was synthesized and displayed selective Cu(II)-amplified absorbance and fluorescence emission above 500 nm in neutral buffered media. Upon the addition of Cu(II), the spirolactam ring of 1 was opened and a 1:1 metal−ligand complex was formed. The detection of Cu(II) by 1 at a lower micromolar level was successful even in buffered water.Keywords
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