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Metal-Organic Framework Magnets.
Chemical Reviews ( IF 62.1 ) Pub Date : 2020-02-11 , DOI: 10.1021/acs.chemrev.9b00666
Agnes E Thorarinsdottir 1 , T David Harris 1, 2
Affiliation  

Metal–organic frameworks represent the ultimate chemical platform on which to develop a new generation of designer magnets. In contrast to the inorganic solids that have dominated permanent magnet technology for decades, metal–organic frameworks offer numerous advantages, most notably the nearly infinite chemical space through which to synthesize predesigned and tunable structures with controllable properties. Moreover, the presence of a rigid, crystalline structure based on organic linkers enables the potential for permanent porosity and postsynthetic chemical modification of the inorganic and organic components. Despite these attributes, the realization of metal–organic magnets with high ordering temperatures represents a formidable challenge, owing largely to the typically weak magnetic exchange coupling mediated through organic linkers. Nevertheless, recent years have seen a number of exciting advances involving frameworks based on a wide range of metal ions and organic linkers. This review provides a survey of structurally characterized metal–organic frameworks that have been shown to exhibit magnetic order. Section 1 outlines the need for new magnets and the potential role of metal–organic frameworks toward that end, and it briefly introduces the classes of magnets and the experimental methods used to characterize them. Section 2 describes early milestones and key advances in metal–organic magnet research that laid the foundation for structurally characterized metal–organic framework magnets. Sections 3 and 4 then outline the literature of metal–organic framework magnets based on diamagnetic and radical organic linkers, respectively. Finally, Section 5 concludes with some potential strategies for increasing the ordering temperatures of metal–organic framework magnets while maintaining structural integrity and additional function.

中文翻译:

金属有机框架磁铁。

金属有机框架代表了最终的化学平台,可在此平台上开发新一代的设计师磁铁。与数十年来主导永磁技术的无机固体形成对比,金属有机框架具有许多优势,最显着的是几乎无限的化学空间,通过该空间可以合成具有可控特性的预先设计和可调结构。此外,基于有机连接基的刚性晶体结构的存在使无机和有机组分永久孔隙和合成后的化学改性成为可能。尽管具有这些属性,但要实现高序温度的金属有机磁体仍然是一个艰巨的挑战,这在很大程度上是由于有机连接子介导的磁交换耦合通常较弱。尽管如此,近年来已经看到了许多令人兴奋的进展,这些进展涉及基于多种金属离子和有机连接基的框架。这篇综述提供了对具有结构特征的金属有机骨架的调查,这些骨架已显示出磁序。第1节概述了对新磁体的需求以及为此目的金属-有机骨架的潜在作用,并简要介绍了磁体的类别和用于表征它们的实验方法。第2节介绍了金属有机磁体研究的早期里程碑和关键进展,这些研究为结构特征化的金属有机框架磁体奠定了基础。然后,第3节和第4节分别概述了基于抗磁性和自由基有机连接子的金属有机骨架磁体的文献。最后,
更新日期:2020-02-11
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