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A rhodamine B-based fluorescent sensor toward highly selective mercury (II) ions detection

A rhodamine B-based fluorescent sensor toward highly selective mercury (II) ions detection

Talanta 150: 14-19

This work presented the design, syntheses and photophysical properties of a rhodamine B-based fluorescence probe, which exhibited a sensitive and selective recognition towards mercury (II). The chemosensor RA (Rhodamine- amide- derivative) contained a 5-aminoisophthalic acid diethyl ester and a rhodamine group, and the property of spirolactone of this chemosensor RA was detected by X-ray crystal structure analyses. Chemosensor RA afforded turn-on fluorescence enhancement and displayed high brightness for Hg(2+), which leaded to the opening of the spirolactone ring and consequently caused the appearance of strong absorption at visible range, moreover, the obvious and characteristic color changed from colorless to pink was observed. We envisioned that the chemosensor RA exhibited a considerable specificity with two mercury (II) ions which was attributed to the open of spirolactone over other interference metal ions.

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Accession: 057095689

Download citation: RISBibTeXText

PMID: 26838376

DOI: 10.1016/j.talanta.2015.11.065

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