The field-effect mobility of fluorinated quinoxaline-based simple polymers with different electron-donating moiety

Abstract

Conjugated polymers with large bandgaps exhibit exceptional application in organic field-effect transistors (OFET). The OFET performances of cost-effective simple polymers consisting difluorinated quinoxaline remain unexplored. In this work, a long branch 2-decyltetradecyl (DT) side chain was utilized to synthesize two new quinoxaline-based polymers FQT and FQTT with thiophene and thienothiophene as the comonomer, respectively. Due to the multiple intramolecular non-covalent bonding interaction and satisfactory film-forming property, the FQT-based OFET displays a reliable carrier mobility of 0.32 cm²/(V s) with high reliability. Consequently, the results indicate that continuous optimization of quinoxaline-based polymers is essential for the development of high-mobility large-bandgap polymers.