Used as a fluorescent probe in biological imaging due to its strong emission properties in the visible range. It binds selectively to hydrophobic regions of proteins and cellular membranes, making it useful for studying membrane dynamics and protein interactions. Also employed in photodynamic therapy research for its ability to generate reactive oxygen species under light exposure. Its long alkyl chain enhances cell permeability, improving uptake in live cells. Commonly conjugated to biomolecules for tracking and detection in immunoassays and flow cytometry.