Widely used as a fluorescent tracer in water systems due to its strong visible fluorescence under UV light. It helps detect leaks, monitor flow patterns, and study water movement in rivers, lakes, and groundwater. Commonly applied in environmental studies and hydrology. Used in biological staining to visualize cells and tissues under fluorescence microscopy. Its ability to bind to proteins and cellular components makes it useful in life science research. Employed in the development of dyes and inks, especially for security printing and textile dyeing, where bright color and fluorescence are desired. Acts as a laser dye in tunable dye lasers, particularly in the green to yellow-orange range, useful in spectroscopy and scientific research. Also utilized in some photovoltaic systems and solar energy research as a sensitizer in dye-sensitized solar cells.