One-Step Synthesis of Cationic Covalent Organic Frameworks

Syed Ibrahim Gnani Peer Mohamed; Tan Zhang; Zhen Jiang; Andrew M Rappe; Siamak Nejati

doi:10.1021/acs.jpclett.2c02543

One-Step Synthesis of Cationic Covalent Organic Frameworks

J Phys Chem Lett. 2022 Nov 3;13(43):10030-10034. doi: 10.1021/acs.jpclett.2c02543. Epub 2022 Oct 20.

Authors

Syed Ibrahim Gnani Peer Mohamed¹, Tan Zhang², Zhen Jiang², Andrew M Rappe², Siamak Nejati¹

Affiliations

¹ Department of Chemical and Biomolecular Engineering, University of Nebraska─Lincoln, Lincoln, Nebraska 68588-8286, United States.
² Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States.

PMID: 36264234
DOI: 10.1021/acs.jpclett.2c02543

Abstract

Ionic covalent organic frameworks (iCOFs) have attractive properties that make them suitable for use as ion transport materials, as energy storage media, and for metal sorption. However, the synthetic pathways to prepare iCOFs are limited. Herein, we prepare an iCOF via a single-step reaction. The synthesized materials were isolated as polycrystalline nanowires. The theoretical and experimental data reveal that the synthesized iCOFs are predominately assembled into staggered configurations. The materials exhibit an uptake capacity of 3.5 g·g^-1 for iodine. The ab initio calculations point to the role of bromide counterions, forming I₂Br^- as stable ions within the framework.