Used as a fluorescent probe in biological imaging due to its strong emission in the visible range and good photostability. Its fluorophenyl and tert-butyl groups enhance lipophilicity, allowing it to cross cell membranes effectively. Commonly applied in live-cell microscopy to track membrane dynamics and study protein interactions. Also employed in optoelectronic devices as an emissive component in organic light-emitting diodes (OLEDs) thanks to its efficient fluorescence and thermal stability. The tetrafluoroborate counterion improves solubility in polar organic solvents, facilitating its use in solution-processed thin films.