Used as a high-performance fluorescent sensor for selective detection of metal ions in environmental and biological systems. Exhibits strong binding affinity and optical response to copper(II) and zinc(II) ions, making it suitable for monitoring trace metal contamination in water and cellular imaging. Its sulfonamide groups enhance solubility and stability in polar solvents, allowing integration into solid-state sensor devices and thin-film coatings. Also applied in supramolecular chemistry for constructing ion-responsive molecular switches due to its reversible coordination behavior and distinct fluorescence quenching upon metal binding.