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A new fluorescent chemosensor based on an acyclic tetra-sulfonamide derivative linked to two dansyl groups has been conveniently synthesized. Its high selective binding ability to fluoride ions over other halide ions was demonstrated by using fluorescence as well as 1 H NMR spectra.
A novel fluorescent compound derived from calixarene which possesses two 3-alkoxy-2-naphthoic acid moieties has been synthesized in moderate yield. In H 2 O/CH 3 OH (1:1), its fluorescent intensity was quenched sharply in the presence of Cu 2+ or Fe 3+ , and the degree of quenching was related to the pH of the solution. Other metal ions, such as Co 2+ , Ni ...
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