Two proton-conductive metal-organic frameworks constructed by pyridyl imidazole dicarboxylate ligands
作者:Hong-Liang Jia、Bing-Xue Han、Gang Li
DOI:10.1016/j.jssc.2023.124268
日期:2023.11
To explore the proton conduction in more MOFs bearing N-heterocyclic carboxylate, herein, a 1-D metal-organic framework (MOF), [Mn(3-HPyIDC)(H2O)2]n (1) (3-H3PyIDC = 2-(3-pyridyl)-4,5-imidazole dicarboxylic acid) and a 3-D MOF, [Cd(4-HPyIDC)(H2O)]n (2) (4-H3PyIDC = 2-(4-pyridyl)-4,5-imidazole dicarboxylic acid) were successfully prepared. Their excellent thermal and water stability was verified across
为了探索更多带有N-杂环羧酸酯的MOF中的质子传导,本文中,一维金属有机骨架(MOF),[Mn(3-HPyIDC)(H 2 O) 2 ] n ( 1 ) (3-H 3 PyIDC = 2-(3-吡啶基)-4,5-咪唑二甲酸) 和 3-D MOF, [Cd(4-HPyIDC)(H 2 O)] n ( 2 ) (4-H 3成功制备了PyIDC=2-(4-吡啶基)-4,5-咪唑二甲酸)。它们优异的热稳定性和水稳定性通过热重分析和粉末 X 射线衍射测定得到了验证。交流阻抗测试表明,它们的质子电导率随着温度和湿度的升高而增加,最佳值可达到10 -4 S/cm以上。含有大量游离羧基或配位H 2 O单元的骨架与氢键网络一起非常有利于质子转移。根据活化能的计算值进一步研究了它们的质子传导机制。