Superprotonic conductivity of a 3D anionic metal-organic framework by synergistic effect of guest [Me2NH2]+ cations, water molecules and host carboxylates
| Autor: | Ya-Pan Wu, Dongsheng Li, Wen-Wen Dong, Xue-Jian Si, Yu-Liang Bao, Yunling Liu, Jun Zhao, Jing Jia |
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| Rok vydání: | 2021 |
| Předmět: |
Chemistry
02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound Crystallography Nafion Pyridine Materials Chemistry Ceramics and Composites Molecule Metal-organic framework SBus Carboxylate Physical and Theoretical Chemistry 0210 nano-technology Single crystal |
| Zdroj: | Journal of Solid State Chemistry. 299:122168 |
| ISSN: | 0022-4596 |
| Popis: | A new 3D anionic metal-organic framework material, namely, [Me2NH2]2[Cd3(L)]·2H2O (1, H4L = 2,5′-di(3′,5′-dicarboxylphenyl)pyridine) has been synthesized under solvothermal conditions and characterized by single crystal X-ray diffraction, PXRD, thermogravimetric analysis and proton conduction investigation. In 1, the adjacent Cd(II) ions are joined to form a trinuclear [Cd3(COO)8] secondary building unit (SBU) by eight bridging carboxylate groups of L4− ligands. The trinuclear [Cd3(COO)8] SBUs are connected by L4− ligands into a 3D (4,8)-connected framework with 1D channels. Most interestingly, due to the guest [Me2NH2]+ cations, water molecules and carboxylates sites are lined the pore channels, 1 possesses a remarkable proton conductivity of 1.12 × 10−1 S cm−1 at 60 °C and 98% RH, which is comparable to commercially available Nafion. The mechanism of proton conduction was also well discussed. |
| Databáze: | OpenAIRE |
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