Department of Chemistry and Biochemistry , University of South Carolina , Columbia , South Carolina 29208 , United States.
Department of Physics and Astronomy , University of South Carolina , Columbia , South Carolina 29208 , United States.
J Am Chem Soc. 2019 Apr 3;141(13):5350-5358. doi: 10.1021/jacs.8b13853. Epub 2019 Mar 18.
Electronic structure modulation of metal-organic frameworks (MOFs) through the connection of linker "wires" as a function of an external stimulus is reported for the first time. The established correlation between MOF electronic properties and photoisomerization kinetics as well as changes in an absorption profile is unprecedented for extended well-defined structures containing coordinatively integrated photoresponsive linkers. The presented studies were carried out on both single crystal and bulk powder with preservation of framework integrity. An LED-containing electric circuit, in which the switching behavior was driven by the changes in MOF electronic profile, was built for visualization of experimental findings. The demonstrated concept could be used as a blueprint for development of stimuli-responsive materials with dynamically controlled electronic behavior.
首次报道了通过连接“导线”作为外部刺激的函数来调节金属有机骨架（MOF）的电子结构。对于包含配位整合光响应配体的扩展明确结构，MOF 电子性质与光异构化动力学以及吸收轮廓变化之间的建立的相关性是前所未有的。所进行的研究是在保持骨架完整性的单晶和块状粉末上进行的。构建了一个包含 LED 的电路，其开关行为由 MOF 电子轮廓的变化驱动，用于可视化实验结果。所展示的概念可用作开发具有动态控制电子行为的响应性材料的蓝图。
