title: Flexible Zirconium Metal-Organic Frameworks as Bioinspired Switchable Catalysts.
abstract: 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.
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Shuai
authors.initials: S
authors.lastname: Yuan
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Lanfang
authors.initials: L
authors.lastname: Zou
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Haixia
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Ying-Pin
authors.initials: YP
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Junsheng
authors.initials: J
authors.lastname: Qin
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Department of Chemistry, Blinn College, Bryan, TX, 77805, USA. weiganglu@yahoo.com.
authors.forename: Weigang
authors.initials: W
authors.lastname: Lu
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA. hall@science.tamu.edu.
authors.forename: Michael B
authors.initials: MB
authors.lastname: Hall
authors.affiliation: Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA. zhou@chem.tamu.edu.
authors.forename: Hong-Cai
authors.identifier: 0000-0002-9029-3788
authors.initials: HC
authors.lastname: Zhou
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry; D002384:Catalysis; D061565:Cycloaddition Reaction; D004852:Epoxy Compounds / Q000737:chemistry; D000073396:Metal-Organic Frameworks / Q000737:chemistry*; D008968:Molecular Conformation; D015040:Zirconium / Q000737:chemistry*
chemical_list: D004852:Epoxy Compounds; D000073396:Metal-Organic Frameworks; D002245:Carbon Dioxide; D015040:Zirconium
keywords: bioinspired catalysts; epoxides; flexible MOFs; pore opening; switchable catalysts