New mechanisms for the controlled growth of one‐dimensional (1D) metal–organic framework (MOF) nano‐ and superstructures under size‐confinement and surface‐directing effects have been discovered. Through applying interfacial synthesis templated by track‐etched polycarbonate (PCTE) membranes, congruent polycrystalline zeolitic imidazolate framework‐8 (ZIF‐8) solid nanorods and hollow nanotubes were found to form within 100 nm membrane pores, while single crystalline ZIF‐8 nanowires grew inside 30 nm pores, all of which possess large aspect ratios up to 60 and show preferential crystal orientation with the {100} planes aligned parallel to the long axis of the pore. Our findings provide a generalizable method for controlling size, morphology, and lattice orientation of MOF nanomaterials.

中文翻译：

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金属有机框架（MOF）纳米棒，纳米管和纳米线

发现了在尺寸限制和表面定向作用下一维（1D）金属-有机框架（MOF）纳米结构和上层结构可控生长的新机制。通过应用以轨迹蚀刻聚碳酸酯（PCTE）膜为模板的界面合成，发现在100 nm膜孔内形成了全同的多晶沸石咪唑盐骨架8（ZIF-8）固态纳米棒和中空纳米管，同时生长了单晶ZIF-8纳米线。在30 nm的孔中，所有这些孔都具有高达60的大长径比，并显示出优先的晶体取向，其中{100}平面平行于孔的长轴排列。我们的发现为控制MOF纳米材料的尺寸，形态和晶格取向提供了一种可推广的方法。