An Ultrastable Porous Polyhedral Oligomeric Silsesquioxane/Tetraphenylthiophene Hybrid As a High-Performance Electrode for Supercapacitors

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2022 Oct 14

PMID 36234775

Authors

Mohsin Ejaz

Mohamed Gamal Mohamed

Santosh U Sharma

Jyh-Tsung Lee

Chih-Feng Huang

Tao Chen

Shiao-Wei Kuo

Affiliations

Soon will be listed here.

Abstract

In this study, we synthesized three hybrid microporous polymers through Heck couplings of octavinylsilsesquioxane (OVS) with 2,5-bis(4-bromophenyl)-1,3,4-oxadiazole (OXD-Br), tetrabromothiophene (Th-Br), and 2,5-bis(4-bromophenyl)-3,4-diphenylthiophene (TPTh-Br), obtaining the porous organic-inorganic polymers (POIPs) POSS-OXD, POSS-Th, and POSS-TPTh, respectively. Fourier transform infrared spectroscopy and solid state C and Si NMR spectroscopy confirmed their chemical structures. Thermogravimetric analysis revealed that, among these three systems, the POSS-Th POIP possessed the highest thermal stability (T: 586 °C; T: 785 °C; char yield: 90 wt%), presumably because of a strongly crosslinked network formed between its OVS and Th moieties. Furthermore, the specific capacity of the POSS-TPTh POIP (354 F g) at 0.5 A g was higher than those of the POSS-Th (213 F g) and POSS-OXD (119 F g) POIPs. We attribute the superior electrochemical properties of the POSS-TPTh POIP to its high surface area and the presence of electron-rich phenyl groups within its structure.

Citing Articles

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