Reversible Tuning Hydroquinone/Quinone Reaction in Metal鈥揙rganic Framework: Immobilized Molecular Switches in Solid State

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• 作者：Bo Gui ; Xiangshi Meng ; Yi Chen ; Jianwu Tian ; Guoliang Liu ; Chencheng Shen ; Matthias Zeller ; Daqiang Yuan ; Cheng Wang
• 刊名：Chemistry of Materials
• 出版年：2015
• 出版时间：September 22, 2015
• 年：2015
• 卷：27
• 期：18
• 页码：6426-6431
• 全文大小：363K
• ISSN：1520-5002

文摘

Transferring the solution-state chemistry of organic-based molecular switches (OMS) into the solid state usually faces several fatal problems, such as spatial confinement or inefficient conversion. As a result, their switching behavior usually cannot be maintained. Herein, we report a redox-switchable metal鈥搊rganic framework (MOF) that can undergo a reversible single-crystal-to-single-crystal (SCSC) transformation through a hydroquinone/quinone redox reaction. The redox-triggered transformation is quantitatively reversible while maintaining the crystallinity of the MOF scaffold. In addition, the transformation occurs gradually in the MOF backbone and from the outsurface of MOF to the inside. This study represents a general strategy to enable efficient conversion of the functionality of an OMS from solution into solid state, by incorporation of OMS into the framework of MOF. Furthermore, the material exhibits interesting changes in spectroscopic properties through reversible SCSC transformation and, thus, may be a starting point for the use of such materials in memory storage or redox-based electronic devices.