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- W3155733393 abstract "A new 3D anionic metal-organic framework material, namely, [Me 2 NH 2 ] 2 [Cd 3 (L)]·2H 2 O ( 1 , H 4 L = 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 [Cd 3 (COO) 8 ] secondary building unit (SBU) by eight bridging carboxylate groups of L 4− ligands. The trinuclear [Cd 3 (COO) 8 ] SBUs are connected by L 4− ligands into a 3D (4,8)-connected framework with 1D channels. Most interestingly, due to the guest [Me 2 NH 2 ] + 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. A new 3D anionic metal-organic framework material, namely, [Me 2 NH 2 ] 2 [Cd 3 (L)]·2H 2 O ( 1 , H 4 L = 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. Compound 1 exhibits a (4,8)-connected 3D network based on trinuclear [Cd 3 (COO) 8 ] cluster units with excellent water stability. It’s worth noting that the value of proton conductivity of 1 reaches 1.12 × 10 −1 S cm −1 at 60 °C and 98% RH which is comparable to most of the dramatic proton conducting MOFs materials. The activation energy (E a ) of 1 is 0.376 eV estimated by Arrhenius equation. • A trinuclear Cd-based 3D (4,8)-connected anionic metal-organic framework were synthesized. • The [Me 2 NH 2 ] + cations, H 2 O and host carboxylates could construct continuous proton-conducting pathways. • The MOF exhibited a remarkable proton conductivity of 1.12×10 -1 S cm -1 at 60°C and 98% RH." @default.
- W3155733393 created "2021-04-26" @default.
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- W3155733393 date "2021-07-01" @default.
- W3155733393 modified "2023-09-25" @default.
- W3155733393 title "Superprotonic conductivity of a 3D anionic metal-organic framework by synergistic effect of guest [Me2NH2]+ cations, water molecules and host carboxylates" @default.
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- W3155733393 doi "https://doi.org/10.1016/j.jssc.2021.122168" @default.
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