Used as a building block in organic synthesis, particularly in the preparation of conjugated polymers and fluorinated aromatic frameworks. Its ethynyl groups readily undergo coupling reactions, enabling the construction of rigid, π-conjugated systems for applications in organic electronics, such as organic light-emitting diodes (OLEDs) and field-effect transistors (OFETs). The presence of fluorine atoms enhances electron-accepting properties and improves thermal and oxidative stability of the resulting materials. Also employed in the development of porous organic materials and covalent organic frameworks (COFs) due to its ability to form extended networks through alkyne-based linkages.