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Microscopic and Mesoscopic Dual Postsynthetic Modifications of Metal-Organic Frameworks

Title
Microscopic and Mesoscopic Dual Postsynthetic Modifications of Metal-Organic Frameworks
Authors
Lee, ByeongchanMoon, DohyunPark, Jinhee
DGIST Authors
Lee, Byeongchan; Moon, Dohyun; Park, Jinhee
Issue Date
2020-08
Citation
Angewandte Chemie - International Edition, 59(33), 13793-13799
Type
Article
Article Type
Article
Author Keywords
C-C bond formationmesoporous materialsmetal-organic frameworkspostsynthetic modificationsingle-crystal-to-single-crystal transformation
Keywords
CARBON-DIOXIDEWATER STABILITYADSORPTIONCAPTURESEPARATIONTRANSFORMATIONRESORCINOLCHEMISTRYIODINEPORES
ISSN
1433-7851
Abstract
We report the dual postsynthetic modification (PSM) of a metal–organic framework (MOF) involving the microscopic conversion of C−H bonds into C−C bonds and the mesoscopic introduction of hierarchical porosity. MOF crystals underwent single-crystal-to-single-crystal transformations during the electrophilic aromatic substitution of Co2(m-DOBDC) (m-DOBDC4−=4,6-dioxo-1,3-benzenedicarboxylate) with alkyl halides and formaldehyde. The steric hindrance caused by the proximity of the introduced functional groups to the coordination bonds reduced bond stability and facilitated the transformation into hierarchically porous mesostructures by etching with in situ generated protons (hydroniums) and halides. The numerous defect sites in the mesostructural MOFs are potential water-sorption sites. However, since the introduced functional groups are close to the main adsorption sites, even methyl groups are able to considerably decrease water adsorption, whereas hydroxy groups increase adsorption at low vapor pressures. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
http://hdl.handle.net/20.500.11750/12063
DOI
10.1002/anie.202000278
Publisher
John Wiley & Sons Ltd.
Related Researcher
  • Author Park, Jinhee Organic-Inorganic Hybrids Lab
  • Research Interests Organic-Inorganic Hybrid Materials; Metal-Organic Polyheda;Metal-Organic Frameworks; Porous Polymer Networks
Files:
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Collection:
Department of Emerging Materials ScienceOrganic-Inorganic Hybrids Lab1. Journal Articles


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