A Porous Chalcogen-Bonded Organic Framework,Journal of the American Chemical Society

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A Porous Chalcogen-Bonded Organic Framework
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2021-11-24 , DOI: 10.1021/jacs.1c08642
Brian J Eckstein ₁ , Loren C Brown ₂ , Bruce C Noll ₃ , Michael P Moghadasnia ₁ , Gary J Balaich ₂ , C Michael McGuirk ₁

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The manner of bonding between constituent atoms or molecules invariably influences the properties of materials. Perhaps no material family is more emblematic of this than porous frameworks, wherein the namesake modes of connectivity give rise to discrete subclasses with unique collections of properties. However, established framework classes often display offsetting advantages and disadvantages for a given application. Thus, there exists no universally applicable material, and the discovery of alternative modes of framework connectivity is highly desirable. Here we show that chalcogen bonding, a subclass of σ-hole bonding, is a viable mode of connectivity in low-density porous frameworks. Crystallization studies with the triptycene tris(1,2,5-selenadiazole) molecular tecton reveal how chalcogen bonding can template high-energy lattice structures and how solvent conditions can be rationalized to obtain molecularly programmed porous chalcogen-bonded organic frameworks (ChOFs). These results provide the first evidence that σ-hole bonding can be used to advance the diversity of porous framework materials.

中文翻译：

多孔硫属元素键合有机骨架

组成原子或分子之间的键合方式总是影响材料的性质。也许没有什么材料家族比多孔框架更具象征意义，其中同名的连接模式产生了具有独特属性集合的离散子类。然而，对于给定的应用程序，已建立的框架类通常显示出抵消的优点和缺点。因此，不存在普遍适用的材料，并且非常需要发现框架连接的替代模式。在这里，我们表明硫属元素键合是 σ 孔键合的一个子类，是低密度多孔框架中一种可行的连接模式。用三蝶烯 tris(1,2, 5-硒二唑）分子结构揭示了硫属元素键合如何模板化高能晶格结构以及溶剂条件如何合理化以获得分子程序化的多孔硫属元素键合有机框架（ChOF）。这些结果提供了第一个证据，证明 σ-空穴键合可用于促进多孔骨架材料的多样性。

更新日期：2021-12-08

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