当前位置：
X-MOL 学术
›
New J. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
High protonic conduction in two metal–organic frameworks containing high-density carboxylic groups
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020/01/13 , DOI: 10.1039/c9nj05735h Yin Qin 1, 2, 3, 4 , Ming-Hao Xue 1, 2, 3, 4 , Bao-Heng Dou 1, 2, 3, 4 , Zhi-Bing Sun 1, 2, 3, 4 , Gang Li 1, 2, 3, 4
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020/01/13 , DOI: 10.1039/c9nj05735h Yin Qin 1, 2, 3, 4 , Ming-Hao Xue 1, 2, 3, 4 , Bao-Heng Dou 1, 2, 3, 4 , Zhi-Bing Sun 1, 2, 3, 4 , Gang Li 1, 2, 3, 4
Affiliation
|
The synthesis of crystalline solid MOFs showing high proton conductivity still faces great challenges. The approach of delicately designing organic functional ligands will be very conducive to the realization of this goal. Herein, by adopting a designed ligand, namely, (p-N-imidazol-1-yl)-phenyl-1H-imidazole-4,5-dicarboxylic acid (p-IPhH3IDC) containing two imidazole and two carboxylate units, two hydrolytically stable 2D MOFs, namely, [Zn(p-IPhHIDC)]n (1) and [Co(p-IPhHIDC)]n (2) with high-density uncoordinated –COOH groups were successfully prepared. The water-assisted proton conducting characteristics of the two MOFs were explored. Expectedly, MOFs 1 and 2 exhibit super-high protonic conductivities of up to 1.9 × 10−3 and 1.07 × 10−3 S cm−1, respectively, at 100 °C and 98% RH, which are higher than those of previously reported MOFs having high proton conductivities. Moreover, their proton-conducting performances were maintained for at least 8 days. We further discussed the conducting mechanism from crystal structural analyses, N2 and H2O vapor adsorption/desorption results and the calculated Ea values and pointed out that the uncoordinated –COOH groups in the frameworks were responsible for the high proton conductivity. Our study provides a useful strategy for constructing MOFs with high proton conductivity by assembling multiple functional units into an organic ligand.
中文翻译：
在两个包含高密度羧基的金属有机骨架中的高质子传导
具有高质子传导性的结晶固体MOF的合成仍然面临巨大挑战。精心设计有机功能配体的方法将非常有助于实现这一目标。在此，通过采用设计配体，即，（对-N -咪唑-1-基） -苯基- 1 H ^ -咪唑-4,5-二羧酸（p -IPhH 3 IDC）含有两个咪唑和两个羧基单元，两个可水解稳定的2D MOF，即[Zn（p -IPhHIDC）] n（1）和[Co（p -IPhHIDC）] n（2）具有高密度的不配位– COOH基团已成功制备。探索了两个MOFs的水辅助质子传导特性。预期地，MOFs材料1和2向上的显示出超高质子传导率1.9×10 -3和1.07×10 -3小号厘米-1，分别在100℃和98％RH，其比以前报道的更高具有高质子传导性的MOF。而且，它们的质子传导性能保持至少8天。我们通过晶体结构分析，N 2和H 2 O蒸气吸附/解吸结果以及计算出的E a进一步讨论了传导机理。值，并指出骨架中未配位的–COOH基团是导致高质子传导性的原因。我们的研究提供了通过将多个功能单元组装成有机配体来构建具有高质子传导性的MOF的有用策略。
更新日期：2020-02-17
中文翻译：
在两个包含高密度羧基的金属有机骨架中的高质子传导
具有高质子传导性的结晶固体MOF的合成仍然面临巨大挑战。精心设计有机功能配体的方法将非常有助于实现这一目标。在此，通过采用设计配体，即，（对-N -咪唑-1-基） -苯基- 1 H ^ -咪唑-4,5-二羧酸（p -IPhH 3 IDC）含有两个咪唑和两个羧基单元，两个可水解稳定的2D MOF，即[Zn（p -IPhHIDC）] n（1）和[Co（p -IPhHIDC）] n（2）具有高密度的不配位– COOH基团已成功制备。探索了两个MOFs的水辅助质子传导特性。预期地，MOFs材料1和2向上的显示出超高质子传导率1.9×10 -3和1.07×10 -3小号厘米-1，分别在100℃和98％RH，其比以前报道的更高具有高质子传导性的MOF。而且，它们的质子传导性能保持至少8天。我们通过晶体结构分析，N 2和H 2 O蒸气吸附/解吸结果以及计算出的E a进一步讨论了传导机理。值，并指出骨架中未配位的–COOH基团是导致高质子传导性的原因。我们的研究提供了通过将多个功能单元组装成有机配体来构建具有高质子传导性的MOF的有用策略。
京公网安备 11010802027423号