Used primarily as an intermediate in organic synthesis, especially in the preparation of conjugated polymers and small molecule semiconductors for organic electronics. Its halogen substituents enable cross-coupling reactions such as Suzuki or Stille couplings, allowing for the construction of complex π-conjugated systems. Commonly employed in the development of organic photovoltaics (OPVs) and organic field-effect transistors (OFETs) due to its ability to fine-tune electronic properties and enhance charge carrier mobility when incorporated into donor-acceptor materials. The presence of both bromine and iodine offers selective reactivity, facilitating stepwise functionalization in multi-step syntheses. The 2-ethylhexyl substituent enhances solubility in organic solvents, making it suitable for thin-film processing in device fabrication.