Guest-Responsive Reversible Electron Transfer in a Crystalline Porous Framework Supported by a Dynamic Building Node.,Angewandte Chemie International Edition

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Guest-Responsive Reversible Electron Transfer in a Crystalline Porous Framework Supported by a Dynamic Building Node.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-07-11 , DOI: 10.1002/anie.202008189
Nivedita Sikdar ₁ , Arpan Hazra ₁ , Debabrata Samanta ₁ , Ritesh Haldar ₂ , Tapas Kumar Maji _{1,

2}

Affiliation

We demonstrate a redox‐active, crystalline donor–acceptor (D‐A) assembly in which the electron transfer (ET) process can be reversibly switched. This ET process, induced by a guest‐responsive structural transformation at room temperature, is realized in a porous, metal–organic framework (MOF), having anthracene (D)–naphthalenediimide (A) as struts. A control MOF structure obtained by a solvent‐assisted linker exchange (SALE) method, replacing an acceptor strut with a neutral one, supported the switchable electronic states in the D‐A MOF. Combined investigations with X‐ray diffraction, spectroscopy, and theoretical analyses revealed the dynamic metal paddle‐wheel node as a critical unit for controlling structural flexibility and the corresponding unprecedented ET process.

中文翻译：

动态建筑节点支持的晶体多孔框架中的客体响应可逆电子转移。

我们演示了一种具有氧化还原活性的晶体供体-受体（D-A）组件，在其中可以可逆地切换电子转移（ET）过程。这种ET过程是由室温下客体响应的结构转变引起的，是在以蒽（D）-萘二酰亚胺（A）为支撑物的多孔金属有机框架（MOF）中实现的。通过溶剂辅助接头交换（SALE）方法获得的控制MOF结构，用中性受体取代了受体支杆，支持了D-A MOF中的可切换电子状态。与X射线衍射，光谱学和理论分析相结合的研究表明，动态金属桨轮节点是控制结构灵活性和相应的前所未有的ET过程的关键单元。

更新日期：2020-07-11

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