Used as a fluorescent sensor for detecting metal ions, particularly in environmental and biological systems due to its strong emission properties. Exhibits high selectivity and sensitivity in the detection of copper(II) ions in aqueous solutions. Applied in the development of chemosensors for monitoring trace metals in water samples. Also investigated as a building block in porous organic frameworks for gas adsorption and sensing applications. Shows potential in optoelectronic devices because of its rigid, conjugated structure and thermal stability.