Designing Covalent Organic Frameworks with a Tailored Ionic Interface for Ion Transport across One‐Dimensional Channels. Issue 11 (29th January 2020)

• Record Type: Journal Article
• Authors: Xu, Qing; Tao, Shanshan; Jiang, Qiuhong; Jiang, Donglin
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 11(2020)
• Page Start: 4557
• Page End: 4563
• Publication Date: 2020-01-29
• Subjects: covalent organic frameworks -- ion conduction -- ionic interfaces -- polyelectrolytes -- pore surface engineering; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201915234
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: A strategy based on covalent organic frameworks for ultrafast ion transport involves designing an ionic interface to mediate ion motion. Electrolyte chains were integrated onto the walls of one‐dimensional channels to construct ionic frameworks via pore surface engineering, so that the ionic interface can be systematically tuned at the desired composition and density. This strategy enables a quantitative correlation between interface and ion transport and unveils a full picture of managing ionic interface to achieve high‐rate ion transport. Moreover, the effect of interfaces was scaled on ion transport; ion mobility is increased in an exponential mode with the ionic interface. This strategy not only sets a benchmark system but also offers a general guidance for designing ionic interface that is key to systems for energy conversion and storage. Abstract : Ion race : 1D nanochannels could enable ion conduction when the channel walls are tailored with an ionic interface. Covalent organic frameworks can create such 1D channels with a tailored interface of desired ionic chain composition and density for ultrafast ion transport. This strategy leads to an exponential correlation between interface and ion motion and offers a general guidance for designing ionic interfaces and materials.