Anthraquinone substituents modulate ionic hydrogen-bonded organic frameworks to achieve high ionic conductivity for alkali metal ions

• Published in: Chemical communications (Cambridge, England) Vol. 61; no. 35; pp. 6538 - 6541
• Main Authors: Chen, Xu-Yong, Fei, Guiqiang, Bai, Xiang-Tian, Qi, Simeng, Cao, Xiao-Jie, Gao, Yi-Da, Luo, Xin, Cao, Li-Hui
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 24.04.2025
• Subjects: Alkali metals; Anthraquinones; Carbonyl groups; Carbonyls; Hydrogen bonding; Ion currents; Lithium
• ISSN: 1359-7345; 1364-548X; 1364-548X
• DOI: 10.1039/d5cc00747j

Herein, we report two charge-assisted hydrogen-bonded organic frameworks ( iHOF-24 and iHOF-25 ) with 3D/2D hydrogen-bonding networks, which exhibit high ionic conductivity for alkali metal ions. Among them, the conductivity of Li + is higher than that of Na + and K + , and the ionic conductivities of Li@ iHOF-24 and Li@ iHOF-25 at 30 °C were 9.44 × 10 −5 and 9.85 × 10 −5 S cm −1 . This change is attributed to the distance between neighboring carbonyl groups in iHOF-24 and iHOF-25 , as well as the radius of the loaded alkali metal ions. In this study, we show that iHOF-24 and iHOF-25 exhibit high ionic conductivity for alkali metal ions. At 30 °C, the Li + conductivities of iHOF-24 and iHOF-25 were 9.44 × 10 −5 and 9.85 × 10 −5 S cm −1 , which is higher than that of Na + and K + .