Related Experiment Video
Updated: Jun 26, 2026

Fluorescent Silver Staining of Proteins in Polyacrylamide Gels
Published on: April 21, 2019
Selective fluorogenic and chromogenic probe for detection of silver ions and silver nanoparticles in aqueous media
Amrita Chatterjee1, Mithun Santra, Nayoun Won
1Department of Chemistry and the Center for Electro-Photo Behaviors in Advanced Molecular Systems, POSTECH, San 31, Hyoja-dong, Pohang, 790-784, Republic of Korea.
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.

