Used primarily as an intermediate in organic synthesis, especially in the preparation of conjugated polymers and small molecule semiconductors for optoelectronic devices. Its halogen substituents enable selective cross-coupling reactions, such as Suzuki or Stille couplings, allowing for the construction of complex aromatic frameworks. Commonly employed in the development of organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs) due to its ability to modulate electronic properties and enhance material stability. The presence of bromo and iodo groups offers orthogonal reactivity, facilitating stepwise functionalization in multi-step syntheses.