Dual Exchange in PCN-333: A Facile Strategy to Chemically Robust Mesoporous Chromium Metal–Organic Framework with Functional Groups,Journal of the American Chemical Society

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Dual Exchange in PCN-333: A Facile Strategy to Chemically Robust Mesoporous Chromium Metal–Organic Framework with Functional Groups
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2015-09-03 , DOI: 10.1021/jacs.5b07373
Jihye Park ₁ , Dawei Feng ₁ , Hong-Cai Zhou ₁

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A facile preparation of a mesoporous Cr-MOF, PCN-333(Cr) with functional group, has been demonstrated through a dual exchange strategy, involving a sequential ligand exchange and metal metathesis process. After optimization of the exchange system, the functionalized PCN-333(Cr), N3-PCN-333(Cr) shows well maintained crystallinity, porosity, as well as much improved chemical stability. Because of the exceptionally large pores (∼5.5 nm) in PCN-333(Cr), a secondary functional moiety, Zn-TEPP with a size of 18 Å × 18 Å, has been successfully clicked into the framework. In this article, we have also analyzed kinetics and thermodynamics during dual exchange process, showing our attempts to interpret the exchange event in the PCN-333. Our findings not only provide a highly stable mesoporous Cr-MOF platform for expanding MOF-based applications, but also suggest a route to functionalized Cr-MOF which may have not been achievable through conventional approaches.

中文翻译：

PCN-333 中的双重交换：具有官能团的化学稳健介孔铬金属-有机框架的简便策略

已经通过双重交换策略证明了一种具有官能团的介孔 Cr-MOF，PCN-333(Cr) 的简便制备，包括顺序配体交换和金属复分解过程。在交换系统优化后，功能化的 PCN-333(Cr)、N3-PCN-333(Cr) 显示出良好的结晶度、孔隙率以及大大提高的化学稳定性。由于 PCN-333(Cr) 中非常大的孔（~5.5 nm），尺寸为 18 Å × 18 Å 的二级功能部分 Zn-TEPP 已成功插入框架中。在本文中，我们还分析了双重交换过程中的动力学和热力学，展示了我们试图解释 PCN-333 中的交换事件。我们的发现不仅为扩展基于 MOF 的应用提供了高度稳定的介孔 Cr-MOF 平台，

更新日期：2015-09-03

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