1,8-Diaminopyrene is primarily used as a fluorescent probe in various analytical and biochemical applications. Its strong fluorescence properties make it valuable in detecting and studying interactions within biological systems, such as DNA binding and protein interactions. It is also employed in the development of sensors for environmental monitoring, particularly for detecting pollutants or hazardous substances. In material science, it serves as a building block for synthesizing organic semiconductors and conductive polymers, which are essential in electronic devices like OLEDs and solar cells. Additionally, its ability to form stable complexes with metal ions makes it useful in coordination chemistry for designing catalysts or functional materials.