Dispersion of ultrastable crown-ether-functionalized triphenylamine and pyrene-linked porous organic conjugated polymers with single-walled carbon nanotubes as high-performance electrodes for supercapacitors

Abstract

We have successfully synthesized a new type of porous organic polymer (POP), called CE-Py POP, which incorporates both crown ether and pyrene using a [4 + 4] Schiff base condensation method. The CE-Py POP structure has been confirmed through various analytical techniques and has exhibited excellent thermal stability and char yield, with a T_d10 value of 416 °C and 67 wt%, respectively. To create suitable materials for supercapacitor devices, we blended CE-Py POP with single-walled carbon nanotubes (SWCNTs) through π–π interactions to form a CE-Py POP/SWCNT nanocomposite. In galvanostatic charge–discharge (GCD) experiments, the CE-Py POP/SWCNT nanocomposite exhibited an impressive specific capacitance value reaching 346 F g⁻¹ and demonstrated exceptional capacitance retention, maintaining 97.6% of its original capacitance even after more than 2000 cycles.