Flexible Zirconium Metal-Organic Frameworks as Bioinspired Switchable Catalysts

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• 作者：Shuai Yuan ; Lanfang Zou ; Dr. Haixia Li ; Ying-Pin Chen ; Dr. Junsheng Qin ; Dr. Qiang Zhang ; Dr. Weigang Lu ; Prof. Dr. Michael B. Hall and Prof. Dr. Hong-Cai Zhou
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：August 26, 2016
• 年：2016
• 卷：55
• 期：36
• 页码：10776-10780
• 全文大小：2343K
• ISSN：1521-3773

文摘

Flexible metal–organic frameworks (MOFs) are highly desirable in host–guest chemistry owing to their almost unlimited structural/functional diversities and stimuli-responsive pore architectures. Herein, we designed a flexible Zr-MOF system, namely PCN-700 series, for the realization of switchable catalysis in cycloaddition reactions of CO₂ with epoxides. Their breathing behaviors were studied by successive single-crystal X-ray diffraction analyses. The breathing amplitudes of the PCN-700 series were modulated through pre-functionalization of organic linkers and post-synthetic linker installation. Experiments and molecular simulations confirm that the catalytic activities of the PCN-700 series can be switched on and off upon reversible structural transformation, which is reminiscent of sophisticated biological systems such as allosteric enzymes.