01816nas a2200205   4500008004100000245015100041210006900192260000800261300001600269490000700285520101900292100002501311700002201336700002501358700002801383700002101411700002601432700002201458856013001480       2019                        eng d00aNovel synthetic approach for designing metal-free, redox-active quinoxaline-benzimidazole-based organic polymers with high energy storage capacity0 aNovel synthetic approach for designing metalfree redoxactive qui  cOCT  a14806-148170 v443 a<p>New organic framework materials, namely, polyphenylquinoxaline (QOP) and polyphenylquinoxaline-benzimidazole (QOP-BOP) were designed using a high-temperature (&gt;100 degrees C) polymerization reaction with different monomers, i.e., 2,5-bis-[(4-benzoylcarbonyl)phenyl]-3-4 diphenyl thiophene (BbcPDT), aromatic tetraamines and biphenyl dicarboxylic acid. The QOP-BOP copolymer exhibited specific capacitance (SC) of 305 F g(-1) at the current density of 2 A g(-1) and 88% retention of its initial specific capacitance after 1000 cycles, which resulted in good cyclic stability. This work establishes the first use of thiophene integrated with quinoxaline-benzimidazole units for energy storage applications and provides strategies for further developments in the performance of such conjugated materials. Cyclic voltammetry, charge-discharge and electrochemical impedance techniques were used to evaluate the electrochemical parameters, which demonstrated their potential in future energy storage devices.</p>
1 aSalunkhe, Pravin, S.1 aPatil, Yuvraj, S.1 aDhole, Indrajeet, A.1 aKalshetti, Basavraj, S.1 aPatil, Vikas, B.1 aMane, Shivshankar, R.1 aGhanwat, Anil, A.  uhttps://library.ncl.res.in/content/novel-synthetic-approach-designing-metal-free-redox-active-quinoxaline-benzimidazole-based