Abstract
ABSTRACTA probe for recognition of IIB (Zn2+, Cd2+, and Hg2+) and VIB (Cr3+) was developed based on the framework of BODIPY. The probe was synthesized by attaching DPA to 4-position of BODIPY. It exhibited excellent sensitivity and selectivity function for the IIB and VIB metal ions with 1:1 stoichiometry in acetonitrile solution. The limit of detection of Zn2+, Cd2+, Hg2+, and Cr3+ were obtained by fluorescence “turn-on” and ranged from 20.6 to 23.1 nM. Other metal cations did not interfere with the emission sensing of Zn2+, Cd2+, Hg2+, and Cr3+. The underlying mechanism of fluorescence “turn-on” is based on the intramolecular PET, which controlled the fluorescence “on” or “off.”
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