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Solvent-Assisted Modification to Enhance Proton Conductivity and Water Stability in Metal Phosphonates
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-02-24 , DOI: 10.1021/acs.inorgchem.9b03754 Zhenni Que 1 , Yingxiang Ye 1 , Yisi Yang 1 , Fahui Xiang 1 , Shimin Chen 1 , Jiali Huang 1 , Yunbin Li 1 , Chulong Liu 1 , Shengchang Xiang 1, 2 , Zhangjing Zhang 1, 2
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-02-24 , DOI: 10.1021/acs.inorgchem.9b03754 Zhenni Que 1 , Yingxiang Ye 1 , Yisi Yang 1 , Fahui Xiang 1 , Shimin Chen 1 , Jiali Huang 1 , Yunbin Li 1 , Chulong Liu 1 , Shengchang Xiang 1, 2 , Zhangjing Zhang 1, 2
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Although proton-conductive metal phosphonates with well-defined structure offer a favorable platform for exploring their structure–property relationship, investigating of the synergic effect of phosphonate groups and functional moieties on proton conduction is rare. In this work, we have synthesized two new copper phosphonates, [Cu(4-cppH)(4,4′-bipy)(H2O)3] (FJU-80) and [Cu(4-cppH)(4,4′-bipy)]·H2O·DMF (FJU-81), by the method of solvent-assisted modification, giving a 1D metal coordination polymer and a 3D metal open framework, respectively. Single-crystal X-ray diffraction shows that FJU-80 is full of hydrogen-bonding sites contributed from the improved synergic effect of phosphonate groups, carboxylate groups, and coordinated water molecules, thereby facilitating continuous hydrogen-bonding networks, whereas FJU-81 only has discrete hydrogen-bonding fragments. Powder X-ray diffraction and impedance analyses confirm that FJU-80 possesses higher water stability as well as improved proton conductivity, indicating that solvent-assisted modification is effective in increasing the hydrogen-bonding sites from phosphonate groups and functional moieties and then realizing facile proton transfer.
中文翻译：
溶剂辅助改性以增强金属膦酸酯的质子电导率和水稳定性
尽管结构明确的质子传导性金属膦酸酯为探索其结构与性质的关系提供了一个有利的平台，但很少有人研究膦酸酯基团和功能性部分对质子传导的协同作用。在这项工作中，我们合成了两种新的膦酸铜，[Cu（4-cppH）（4,4'-bipy）（H 2 O）3 ]（FJU-80）和[Cu（4-cppH）（4， 4'-bipy）]·H 2 O·DMF（FJU-81），通过溶剂辅助改性的方法，分别得到一维金属配位聚合物和三维金属开放骨架。单晶X射线衍射表明，FJU-80FJU-81仅有一个不连续的氢键片段，而FJU-81仅具有不连续的氢键片段。粉末X射线衍射和阻抗分析证实FJU-80具有更高的水稳定性以及改善的质子传导性，表明溶剂辅助改性可有效地增加膦酸酯基团和功能性部分的氢键结合位点，然后实现易质子转让。
更新日期：2020-02-24
中文翻译：
溶剂辅助改性以增强金属膦酸酯的质子电导率和水稳定性
尽管结构明确的质子传导性金属膦酸酯为探索其结构与性质的关系提供了一个有利的平台，但很少有人研究膦酸酯基团和功能性部分对质子传导的协同作用。在这项工作中，我们合成了两种新的膦酸铜，[Cu（4-cppH）（4,4'-bipy）（H 2 O）3 ]（FJU-80）和[Cu（4-cppH）（4， 4'-bipy）]·H 2 O·DMF（FJU-81），通过溶剂辅助改性的方法，分别得到一维金属配位聚合物和三维金属开放骨架。单晶X射线衍射表明，FJU-80FJU-81仅有一个不连续的氢键片段，而FJU-81仅具有不连续的氢键片段。粉末X射线衍射和阻抗分析证实FJU-80具有更高的水稳定性以及改善的质子传导性，表明溶剂辅助改性可有效地增加膦酸酯基团和功能性部分的氢键结合位点，然后实现易质子转让。
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