Used as a key intermediate in organic synthesis, particularly in the preparation of fluorescent dyes and optoelectronic materials. Its conjugated structure makes it suitable for applications in organic semiconductors and nonlinear optical devices. Also employed in the development of sensors due to its ability to undergo selective interactions with metal ions and biomolecules. Commonly found in research settings for fabricating organic light-emitting diodes (OLEDs) and dye-sensitized solar cells (DSSCs) owing to its strong light absorption and electron-accepting properties.