1-(Dichloro-1,3,5-triazinyl)-pyrene (1-(4,6-Dichloro-1,3,5-triazin-2-yl)pyrene) serves as a multifunctional dye with diverse applications in both traditional and emerging fields. In biological experiments, dyes facilitate the observation and analysis of cell structures, tracking of biomolecules, evaluation of cell functions, distinction of cell types, detection of biomolecules, examination of tissue pathology, and monitoring of microorganisms. Their utilization spans from foundational scientific research to extensive clinical diagnostics. Additionally, dyes are integral to the textile industry for coloring purposes, and find innovative uses in functional textile processing, food coloring, and dye-sensitized solar cells.