Used as a fluorescent probe in biological imaging due to its strong emission properties and sensitivity to microenvironment changes. It is particularly effective in detecting reactive oxygen species and monitoring oxidative stress in cells. Also employed in the development of chemosensors for metal ion detection, especially for copper and iron ions, owing to its selective binding and signal response. Additionally, it serves as a key intermediate in synthesizing photoactive materials and in photodynamic therapy research because of its ability to generate singlet oxygen under light irradiation.