Used primarily in organic electronics, this compound serves as a key building block in the synthesis of low-bandgap conjugated polymers. These polymers are essential for high-performance organic solar cells (OSCs), where they act as electron donors in active layers, enabling efficient light absorption and charge transport. Its strong electron-accepting nature enhances the planarity and stability of resulting polymers, improving device efficiency. Additionally, it has been employed in organic field-effect transistors (OFETs) and perovskite solar cells as a dopant or interfacial layer to boost conductivity and charge extraction. The hexyl side chains improve solubility in organic solvents, facilitating solution-based processing techniques like spin-coating and inkjet printing for flexible and large-area optoelectronic devices.