Used as a key intermediate in the synthesis of fluorescent dyes and organic semiconductors due to its extended conjugated structure. Its rigid, planar framework enhances electron delocalization, making it suitable for applications in organic light-emitting diodes (OLEDs) and sensor materials. Also employed in the preparation of crosslinking agents for specialty polymers, where it contributes to thermal stability and mechanical strength. Its aldehyde groups allow for easy functionalization, enabling use in Schiff base formation for metal-organic frameworks (MOFs) and catalytic systems.