Membranes tailored for selective ion transport represent a promising avenue toward enhancing sustainability across various fields but limited interaction between ions and nanochannels in polymers of intrinsic microporosity hinders their effectiveness. Here, the authors introduce the randomly twisted V-shaped structure of Tröger’s Base unit and quaternary ammonium groups to construct ionized sub-nanochannel membranes and demonstrate the enhanced transport of the dehydrated monovalent ions.
- Mei-Ling Liu
- Yu Chen
- Shi-Peng Sun
