2,6-Diphenylanthracene is a specialty chemical used as a fluorescent tracer in scientific research and industrial applications due to its strong blue fluorescence under UV light. It is commonly employed in the development and calibration of fluorescence detection systems, including sensors and imaging devices. It also serves as an efficient scintillator in radiation detectors, such as scintillation detectors, converting radiation energy—particularly gamma rays—into light to enhance detection sensitivity in physics, nuclear, and medical research. Additionally, it is utilized in organic light-emitting diodes (OLEDs) as a dopant to improve emission efficiency, in photovoltaic and optical materials research due to its specific absorption and emission properties, and in long-term optical studies. Its photostability makes it ideal for formulating specialty inks and coatings requiring visible fluorescence.