TY - JOUR
T1 - Flexible Ionic Conjugated Microporous Polymer Membranes for Fast and Selective Ion Transport
AU - Zhou, Zongyao
AU - Shinde, Digambar
AU - Guo, Dong
AU - Cao, Li
AU - Nuaimi, Reham Al
AU - Zhang, Yuting
AU - Enakonda, Linga
AU - Lai, Zhiping
N1 - KAUST Repository Item: Exported on 2021-11-01
Acknowledged KAUST grant number(s): BAS/1/1375-01, URF/1/3769-01
Acknowledgements: The project was supported by the King Abdullah University of Science and Technology (KAUST) under the competitive research grants URF/1/3769-01 and BAS/1/1375-01.
PY - 2021/10/27
Y1 - 2021/10/27
N2 - Membranes with fast and selective ion transport have great potential for use in water- and energy-related applications. The structure and material design of the membranes play a key role in improving their performance. Conjugated microporous polymers (CMPs) as emerging membrane materials have shown uniform pore size, high surface area, and excellent chemical stability, but their mechanical properties are poor due to their brittleness. Herein, a flexible ionic CMP membrane with precisely tailored pore architecture and chemistry prepared by a coelectropolymerization (COEP) strategy is reported. The structure contains rigid monomers to maintain structural uniformity and flexible and charged monomers to enhance mechanical flexibility and improve ion selectivity by combining precise size sieving and Donnan effect. The resulting 40 nm thick CMP membranes show equivalent ion conductance compared to the commercial Nafion 117 membrane, but an order of magnitude higher ion selectivity for ion systems such as K+/Mg2+ and Li+/Mg2+.
AB - Membranes with fast and selective ion transport have great potential for use in water- and energy-related applications. The structure and material design of the membranes play a key role in improving their performance. Conjugated microporous polymers (CMPs) as emerging membrane materials have shown uniform pore size, high surface area, and excellent chemical stability, but their mechanical properties are poor due to their brittleness. Herein, a flexible ionic CMP membrane with precisely tailored pore architecture and chemistry prepared by a coelectropolymerization (COEP) strategy is reported. The structure contains rigid monomers to maintain structural uniformity and flexible and charged monomers to enhance mechanical flexibility and improve ion selectivity by combining precise size sieving and Donnan effect. The resulting 40 nm thick CMP membranes show equivalent ion conductance compared to the commercial Nafion 117 membrane, but an order of magnitude higher ion selectivity for ion systems such as K+/Mg2+ and Li+/Mg2+.
UR - http://hdl.handle.net/10754/673019
UR - https://onlinelibrary.wiley.com/doi/10.1002/adfm.202108672
U2 - 10.1002/adfm.202108672
DO - 10.1002/adfm.202108672
M3 - Article
SN - 1616-301X
SP - 2108672
JO - Advanced Functional Materials
JF - Advanced Functional Materials
ER -