Selective Fluorogenic and Chromogenic Probe for Detection of Silver Ions and Silver Nanoparticles in Aqueous Media
Amrita Chatterjee(Pohang University of Science and Technology), Mithun Santra(Pohang University of Science and Technology), Nayoun Won(Pohang University of Science and Technology), Sungjee Kim(Pohang University of Science and Technology), Jae Kyung Kim(Pohang University of Science and Technology), Seung Bin Kim(Pohang University of Science and Technology), Kyo Han Ahn(Pohang University of Science and Technology)
Cited by 368
Abstract
A novel rhodamine-based fluorogenic and chromogenic probe for Ag(+) ions in aqueous media is developed, which can be also used for the detection of AgNPs. The sensing mechanism is based on irreversible tandem ring-opening and -forming processes promoted by Ag(+)-coordination to the iodide of the probe, which is accompanied by both color and turn-on type fluorescence changes. The probe shows remarkably high selectivity over other metal ions and detects silver ions up to 14 ppb.
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