Structure engineering of metal-organic frameworks (MOFs) at the nanometer scale is attracting increasing interest due to their unique properties and new functions that normally cannot be achieved in bulk MOF crystals. Here, we report the preparation of ultra-thin MOF nanoribbons (NRBs) by using metal-hydroxide nanostructures as the precursors. Importantly, this general method can be used to synthesize various kinds of ultra-thin MOF NRBs, such as MBDC (M = Co, Ni; BDC = 1,4-benzenedicarboxylate), NiCoBDC, CoTCPP (TCPP = tetrakis(4-carboxyphenyl)porphyrin) and MIL-53(Al) NRBs. As a proof-of-concept application, the as-prepared ultra-thin CoBDC NRBs have been successfully used as a fluorescent sensing platform for DNA detection, which exhibited excellent sensitivity and selectivity. The present strategy might open an avenue to prepare MOF nanomaterials with new structures and unique properties for various promising applications.

中文翻译：

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超薄金属有机骨架纳米带


纳米级金属有机框架（MOF）的结构工程由于其独特的性质和通常无法在块状 MOF 晶体中实现的新功能而引起了越来越多的兴趣。在这里，我们报道了使用金属氢氧化物纳米结构作为前驱体制备超薄 MOF 纳米带（NRB）。重要的是，这种通用方法可用于合成各种超薄MOF NRB，例如MBDC（M = Co，Ni；BDC = 1,4-苯二甲酸）、NiCoBDC、CoTCPP（TCPP = 四（4-羧基苯基））卟啉）和 MIL-53(Al) NRB。作为概念验证应用，所制备的超薄 CoBDC NRB 已成功用作 DNA 检测的荧光传感平台，表现出优异的灵敏度和选择性。目前的策略可能为制备具有新结构和独特性能的 MOF 纳米材料开辟一条途径，用于各种有前途的应用。