2-(2-Hydroxyphenyl)benzothiazole is widely used in the field of organic electronics due to its excellent photophysical properties. It serves as a key component in the development of organic light-emitting diodes (OLEDs), where it acts as an efficient emitter material, contributing to high brightness and color purity. Additionally, this compound is utilized in fluorescent sensors for detecting metal ions, particularly in analytical chemistry, owing to its selective binding and fluorescence response. Its ability to form stable complexes with metals also makes it valuable in coordination chemistry for designing novel materials. Furthermore, it finds applications in dye-sensitized solar cells (DSSCs) as a sensitizer, enhancing light absorption and energy conversion efficiency.