Enhanced Proton Conductivity Promoted by Structural Transition in a 2D Interwoven Metal–Organic Framework
We report enhanced proton conductivity promoted by a structural phase transition of MFM-504(Cu)-DMF to MFM-504(Cu)-MeOH and to MFM-504(Cu)-OH via ligand substitution upon exposure to MeOH and H<sub>2</sub>O vapors, respectively. MFM-504(Cu)-DMF can be synthesized by the solvothermal reaction of Cu(NO<sub>3</sub>)<sub>2</sub>·3H<sub>2</sub>O and the flexible zwitterionic ligand, imidazolium-1,3-bis(methylenedicarboxylate) (imidc<sup>-</sup>), to afford a unique layered interwoven network structure. MFM-504(Cu)-OH shows a proton conductivity of 5.01 × 10<sup>-4</sup> S cm<sup>-1</sup> at 80 °C and 99% relative humidity (RH) with an activation energy (<i>E</i> <sub>a</sub>) of 0.80 eV, indicating a vehicle mechanism within MFM-504(Cu)-OH.
Authors
- Íñigo J. Vitórica‐Yrezábal (ORCID: https://orcid.org/0000-0001-8806-150X)
- Nippich Kaeosamut (ORCID: https://orcid.org/0000-0003-4574-5527)
- Xi Chen (ORCID: https://orcid.org/0000-0002-5807-4219)
- Sihai Yang⧫ (ORCID: https://orcid.org/0000-0002-1111-9272)
- Lewis Hughes (ORCID: https://orcid.org/0000-0002-4363-8675)
- Qingqing Mei (ORCID: https://orcid.org/0000-0003-0210-1377)
- Martin Schröder (ORCID: https://orcid.org/0000-0001-6992-0700)
- Ming Li (ORCID: https://orcid.org/0000-0002-5456-5846)
- Xue Han (ORCID: https://orcid.org/0000-0002-2190-9227)
- Sergei Sapchenko
Institutions
- University of Nottingham (GB)
- Peking University (CN)
- Beijing Normal University (CN)
- University of Manchester (GB)
- Beijing National Laboratory for Molecular Sciences (CN)
Publication Details
- Journal
- Crystal Growth & Design
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1021/acs.cgd.4c01279
- Citations
- 2
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.32
Funders
- European Commission
- China Scholarship Council
- Engineering and Physical Sciences Research Council
- Beijing National Laboratory for Molecular Sciences
- H2020 European Research Council