Multivariate analysis of disorder in metal-organic frameworks.

Multivariate analysis of disorder in metal-organic frameworks.
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DOI:
10.1038/s41467-022-29849-6
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发表时间:
2022-04-21
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
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无序框架的合理设计是目标功能材料的一条有吸引力的途径。然而,此类材料的有意实现依赖于我们容易表征和量化结构无序的能力。在这里,我们使用对分布函数的多变量分析来指纹和量化一系列组成相同的金属有机框架内的无序性,这些框架具有不同的晶体、无序和无定形结构。我们发现这种方法可以为连接这些材料的结构崩溃的动力学和机制提供强有力的见解。我们的方法还扩展到一个非常不同的系统,即沸石咪唑酯框架的熔化,以证明这种方法在无序结构化学的许多领域的潜在通用性。材料中的结构无序性很难表征。在这里,作者使用原子对分布函数的多元分析来研究金属有机框架的结构崩溃和熔化,揭示了强大的机械和动力学见解。
The rational design of disordered frameworks is an appealing route to target functional materials. However, intentional realisation of such materials relies on our ability to readily characterise and quantify structural disorder. Here, we use multivariate analysis of pair distribution functions to fingerprint and quantify the disorder within a series of compositionally identical metal–organic frameworks, possessing different crystalline, disordered, and amorphous structures. We find this approach can provide powerful insight into the kinetics and mechanism of structural collapse that links these materials. Our methodology is also extended to a very different system, namely the melting of a zeolitic imidazolate framework, to demonstrate the potential generality of this approach across many areas of disordered structural chemistry. Structural disorder in materials is challenging to characterise. Here, the authors use multivariate analysis of atomic pair distribution functions to study structural collapse and melting of metal–organic frameworks, revealing powerful mechanistic and kinetic insight.
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