A rhodamine-based dual chemosensor for the naked-eye detection of Hg and enhancement of the fluorescence emission for Fe.

A novel fluorescent chemosensor based on trimesoyl chloride-rhodamine (TR) was successfully synthesized. Rising chromogenic and fluorogenic spectral enhancements could be observed in trimesoyl chloride-rhodamine (TR) probes when Hg and Fe were added, respectively. TR has shown selectivity for Hg and Fe with high sensitivity due to metal ion complexation induced photophysical "turn-on" signaling responses.

A fluorescent supramolecular gel and its application in the ultrasensitive detection of CN by anion-π interactions.

Supramolecular gels have been widely reported on account of their unique superiority and application prospects. In this work, we constructed a novel supramolecular gel (HD-G) by using hydroxy-naphthaldehyde decorated with naphthalimide in DMSO solution, which exhibited excellent selectivity and ultrasensitive sensing properties toward CN (the lowest detection limit is 1.82 × 10 M).