A novel synthetic approach for designing metal-free, redox-active quinoxaline-benzimidazole-based organic polymers with high energy storage capacity

Abstract

We established the first use of thiophene integrated with a quinoxaline-benzimidazole unit for energy storage applications and delivered strategies for further developments in the performance of such materials.

A review of π-conjugated polymer-based nanocomposites for metal-ion batteries and supercapacitors

“… MWCNT-DAP-TCA-P(EDOT-co-PyMP) CNT-TEPA@PEPy 0.5 M, LiClO 4 −0.5 to +0.5 V (139.6) (0.5) 72.5%, 20 000 [ 124 ] 9. QOP-BOP M Na 2 SO 4 electrolyte −1.2–0.0 305 (2) — 88% (1000) [ 5 ] 10. PEDOT 1.0 M H 2 SO 4 0–0.1 90 (1) 1.8 mWh cm −3 93%, 15 000 cycles at 30 mA cm −2 [ 125 ] …”

“…Both of these batteries have their own weaknesses and strengths. Specifically, the use of hazardous and banned lead as electrode material and lower volumetric energy density of lead-acid battery, it couldn't be the practical choice as an energy storage device for future sustainable energy management [5][6][7]. Therefore, at present, most of the portable and off-grid electrical devices solely rely on LIBs.…”

High‐performance nano‐TiO2@polyvinylidene fluoride composite separators prepared by electrospinning for safe lithium‐ion battery

“…[6][7][8] In addition, polyolefin separator contains large amount of C H, which is not only prone to burning but also has poor compatibility with polar liquid electrolyte. Therefore, it is urgent to develop heat-resisting polymer separator, such as polyphenylquinoxaline-benzimidazole (QOP-BOP), 9 PVDF, 3 polyimide (PI), 10 polyacrylonitrile (PAN), 11 and so forth. For example, Salunkhe et al 9 synthesized a new conductive polymer material QOP-BOP that not only has good thermal stability, but also has excellent specific capacitance (305 F g À1 at 2 A g À1 ) and cycle stability (88% after 1000 cycles) compared to polyaniline (PANI) and polythiophene (PTh).…”

Programmed Synthesis of Tetra-Aryl Thiophenes with Stepwise, Ester-Controlled Regioselectivity

“…Arylated thiophene analogues are recognized building blocks in drug discovery, with derivatives used as estrogen receptor agonists 1 and A1 adenosine receptor agonists, 2 antitumor agents, 3−5 antimicrobial agents, 6,7 as well as tyrosine phosphatase inhibitors, 8 bacterial DNA gyrase inhibitors, 9 and 15-lipoxygenase-1 inhibitors, 10 among other applications. 11−13 Tetra-aryl thiophenes, in particular, have emerged as compounds of interest for optoelectronic materials, 14−20 energy storage, 21 precursors to hexaarylbenzene p-channels, 22,23 and polymeric materials. 24−26 Currently, however, the range of methodologies for the complete and selective arylation of thiophenes is limited.…”

“…Multi-arylated thiophenes have become ubiquitous motifs in a number of salient industries in the last two decades. Arylated thiophene analogues are recognized building blocks in drug discovery, with derivatives used as estrogen receptor agonists and A1 adenosine receptor agonists, antitumor agents, − antimicrobial agents, , as well as tyrosine phosphatase inhibitors, bacterial DNA gyrase inhibitors, and 15-lipoxygenase-1 inhibitors, among other applications. − Tetra-aryl thiophenes, in particular, have emerged as compounds of interest for optoelectronic materials, − energy storage, precursors to hexaarylbenzene p -channels, , and polymeric materials. − Currently, however, the range of methodologies for the complete and selective arylation of thiophenes is limited. In order to efficiently access this promising class of molecules, and further expand the range of applications, we report herein a programmed methodology for the regioselective synthesis of tetra-aryl thiophenes.…”