Wang Hui, Zhu Wei, Li Jian, Tian Tian, Lan Yue, Gao Ning, Wang Chen, Zhang Meng, Faul Charl F J, Li Guangtao
Department of Chemistry and Key Lab of Organic Optoelectronics & Molecular Engineering , Tsinghua University , Beijing , 100084 , P. R. China . Email:
School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK.
Chem Sci. 2015 Mar 1;6(3):1910-1916. doi: 10.1039/c4sc03278k. Epub 2014 Dec 23.
The controlled formation of MOF-based superstructures with well-defined nanoscale sizes and exquisite morphologies represents a big challenge, but can trigger a new set of properties distinct from their bulk counterparts. Here we report on the use of a self-assembled organic object to template the first example of a nanoscale metal-organic framework (MOF) with a helical morphology. Two prototypical MOFs ( and ) were used to exemplify the growth of such materials on supramolecular assemblies. Interestingly, it was found that, dependent on the nature of the precursors, not only could well-defined helical MOF nanotubes be facilely fabricated, but novel helical bundle nanostructures could also be formed. These resultant MOF superstructures show additional optical properties and could be used as precursors for the preparation of chiral nanocarbons.
可控地形成具有明确纳米级尺寸和精致形态的基于金属有机框架（MOF）的超结构是一项巨大挑战，但却能引发一系列不同于其块状对应物的新特性。在此，我们报道了利用自组装有机客体作为模板，制备出首例具有螺旋形态的纳米级金属有机框架（MOF）。使用两种典型的MOF（和）来例证此类材料在超分子组装体上的生长。有趣的是，研究发现，取决于前驱体的性质，不仅可以轻松制备出明确的螺旋状MOF纳米管，还能形成新颖的螺旋束纳米结构。这些所得的MOF超结构展现出额外的光学特性，并且可用作制备手性纳米碳的前驱体。
