Anderson, Trent E. published the artcilePoly(2,3-dihexylthieno[3,4- b ]pyrazine- alt -2,3-dihexylquinoxaline): Processible, Low-Bandgap, Ambipolar-Acceptor Frameworks via Direct Arylation Polymerization, Formula: C4Br2N2O4S, the publication is Synlett (2018), 29(19), 2542-2546, database is CAplus.
The synthesis of a new dialkyl-functionalized quinoxaline acceptor, 5,8-dibromo-2,3-dihexylquinoxaline, is reported, along with its cross-coupling with 2,3-dihexylthieno[3,4- b]pyrazine via direct arylation polymerization The resulting ambipolar-acceptor polymer poly(2,3-dihexylthieno[3,4- b]pyrazine- alt-2,3-dihexylquinoxaline) exhibits a low bandgap of 1.07 eV and high solubility The results of initial organic photovoltaic devices are also reported.
Synlett published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Formula: C4Br2N2O4S.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary