First Cationic Uranyl-Organic Framework with Anion-Exchange Capabilities
First Cationic Uranyl-Organic Framework with Anion-Exchange Capabilities
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第一个具有阴离子交换能力的阳离子铀酰有机框架
DOI：
10.1021/acs.inorgchem.6b00930
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发表时间：
2016-07-04
影响因子：
4.6
通讯作者：
Wang, Shuao
中科院分区：
文献类型：
--
作者：
Bai, Zhuanling;Wang, Yanlong;Wang, Shuao
通过控制基于两性离子的配体与铀酰阳离子的自组装过程中的水解程度，我们观察到中性铀酰有机骨架[（UO_2）（2）（TTTPC）（OH）O（COOH）]中心点1.5DMF中心点7 H（2）O（SCU-6）到第一个阳离子铀酰有机骨架[（UO_2）（HTTTPC）（OH）]的结构演变Br中心点1.5DMF中心点4 H（2）O（SCU-7）。SCU-6和SCU-7的晶体结构分别是由四核和双核铀酰团簇构成的层状结构。可交换的卤素阴离子存在于层间空间中，平衡SCU-7中各层的正电荷。因此，SCU-7能够有效地去除水溶液中的过氧化氢阴离子。同时，H2 PO 4-交换的SCU-7材料在50 ℃和90%相对湿度下表现出8.70 × 10（-5）S cm（-1）的中等质子电导率，与原始材料相比提高了近80倍。
By controlling the extent of hydrolysis during the self-assembly process of a zwitterionic-based ligand with uranyl cations, we observed a structural evolution from the neutral uranyl organic framework [(UO2)(2)(TTTPC)(OH)O(COOH)]center dot 1.5DMF center dot 7H(2)O (SCU-6) to the first cationic uranyl organic framework with the formula of [(UO2)(HTTTPC)(OH)]Br center dot 1.5DMF center dot 4H(2)O (SCU-7). The crystal structures of SCU-6 and SCU-7 are layers built with tetranuclear and dinuclear uranyl clusters, respectively. Exchangeable halide anions are present in the interlaminar spaces balancing the positive charge of layers in SCU-7. Therefore, SCU-7 is able to effectively remove perrhenate anions from aqueous solution. Meanwhile, the H2PO4--exchanged SCU-7 material exhibits a moderate proton conductivity of 8.70 X 10(-5) S cm(-1) at 50 degrees C and 90% relative humidity, representing nearly 80 times enhancement compared to the original material.