Gas storage in a partially fluorinated highly stable three-dimensional porous metal-organic framework.
Gas storage in a partially fluorinated highly stable three-dimensional porous metal-organic framework.
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DOI：
10.1021/ic302645r
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发表时间：
2013-06
影响因子：
4.6
通讯作者：
Atanu Santra;I. Senkovska;S. Kaskel;P. Bharadwaj
中科院分区：
文献类型：
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作者：
Atanu Santra;I. Senkovska;S. Kaskel;P. Bharadwaj
合成了一种部分氟化线性刚性连接剂2,2′-双-三氟甲基-联苯-4,4′-二羧酸（H2bfbpdc）。在溶剂热条件下，该连接剂在4,4′-联吡啶（bpy）和Zn(NO3)2·6H2O的存在下，形成多孔的三维（3D）金属有机骨架{[Zn4O(bfbpdc)3(bpy)0.5(H2O)]·（3DMF）（H2O）}n(1)。单晶x射线分析表明，1含有一个三维通道结构，其高极性孔表面由bfbpdc（2-）连接体的垂坠三氟甲基修饰。热重分析（TGA）和变温粉末x射线衍射（VTPXRD）表明该骨架具有较高的热稳定性。存在于空隙中的溶剂分子可以通过加热去除，保持结构的完整性以提供多孔框架。在此框架上进行了气体（N2, H2， CH4和CO2）和水的吸附研究。
A partially fluorinated linear rigid linker, 2,2'-bis-trifluoromethyl-biphenyl-4,4'-dicarboxylic acid (H2bfbpdc), has been synthesized. This linker forms a porous three-dimensional (3D) metal-organic framework, {[Zn4O(bfbpdc)3(bpy)0.5(H2O)]·(3DMF)(H2O)}n (1), in the presence of the colinker 4,4'-bipyridine (bpy) and Zn(NO3)2·6H2O under solvothermal condition. Single crystal X-ray analysis shows that 1 contains a 3D channel structure with highly polar pore surfaces decorated with pendant trifluoromethyl groups of bfbpdc(2-) linker. Thermogravimetric analysis (TGA) and variable temperature powder X-ray diffraction (VTPXRD) exhibit high thermal stability of the framework. The solvent molecules present in the voids can be removed by heating, maintaining the integrity of the structure to afford a porous framework. Gas (N2, H2, CH4, and CO2) and water adsorption studies were performed on this framework.