School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
Inorg Chem. 2011 Mar 7;50(5):1743-8. doi: 10.1021/ic102188v. Epub 2011 Jan 19.
Two nanotubular metal-organic frameworks (MOFs), {Cu(L1)·2H(2)O·1.5DMF}(∞) (1) and {Cu(2)(L2)(2)(H(2)O)(2)·7H(2)O·3DMF}(∞) (2), with novel topologies have been constructed based on Cu(2+), 5-(pyridin-4-yl)isophthalic acid (L1) and 5-(pyridin-3-yl)isophthalic acid (L2), respectively. Two MOFs were characterized by IR spectroscopy, thermogravimetry, single-crystal, and powder X-ray diffraction methods. Network analysis reveals a two-nodal (3,6)-connected (4·6(2))(2)(4(2)·6(10)·8(3)) net and a three-nodal (3,4)-connected (4·8(2))(4)(4(2)·8(2)·10(2))(2)(8(4)·12(2)) net. Interpenetration is inherently prevented by both of the topologies of the frameworks. The porosity of MOF 1 was confirmed by N(2) and CO(2) gas adsorption investigations. MOF 1 exhibits remarkable hydrogen sorption hysteresis at low pressure and a H(2) uptake capacity of 1.05 wt% at 77 K and 1 atm.
基于 Cu(2+)、5-(吡啶-4-基)间苯二甲酸 (L1) 和 5-(吡啶-3-基)间苯二甲酸 (L2)，分别构建了两种具有新颖拓扑结构的纳米管状金属有机骨架 (MOFs)：{Cu(L1)·2H(2)O·1.5DMF}(∞) (1) 和 {Cu(2)(L2)(2)(H(2)O)(2)·7H(2)O·3DMF}(∞) (2)。通过红外光谱、热重分析、单晶和粉末 X 射线衍射等方法对两个 MOFs 进行了表征。网络分析揭示了一个具有两个节点的 (3,6)-连接 (4·6(2))(2)(4(2)·6(10)·8(3))网络和一个具有三个节点的 (3,4)-连接 (4·8(2))(4)(4(2)·8(2)·10(2))(2)(8(4)·12(2))网络。这两个骨架的拓扑结构都阻止了互穿。通过 N(2)和 CO(2)气体吸附研究证实了 MOF 1 的多孔性。MOF 1 在低压下表现出显著的氢气吸附滞后，在 77 K 和 1 atm 下的氢气吸附量为 1.05wt%。
