Widely used as a fluorescent probe in biological imaging due to its strong photostability and high quantum yield. It binds selectively to hydrophobic regions of proteins and membranes, making it effective for studying cellular structures and dynamics. Commonly employed in fluorescence microscopy to visualize lipid bilayers and protein aggregates. Also utilized in forensic science for latent fingerprint detection because it fluoresces under UV light when interacting with sebaceous residues. Its rigid polycyclic structure enhances sensitivity in detecting micro-environmental changes, useful in material science for monitoring polymer degradation and phase transitions.