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Construction of hierarchically porous metal–organic frameworks through linker labilization

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms15356· OSTI ID:1389292
 [1];  [2];  [3];  [2];  [4];  [2];  [2];  [2];  [5];  [6];  [7]
  1. Texas A & M Univ., College Station, TX (United States). Dept. of Chemistry; Texas A&M University
  2. Texas A & M Univ., College Station, TX (United States). Dept. of Chemistry
  3. Texas A & M Univ., College Station, TX (United States). Dept. of Chemistry; King Saud Univ., Riyadh (Saudi Arabia). Chemistry Dept.
  4. Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering
  5. King Saud Univ., Riyadh (Saudi Arabia). Chemistry Dept.
  6. Texas A & M Univ., College Station, TX (United States). Dept. of Materials Science and Engineering, Artie McFerrin Dept. of Chemical Engineering
  7. Texas A & M Univ., College Station, TX (United States). Dept. of Chemistry, Dept. of Materials Science and Engineering; King Saud Univ., Riyadh (Saudi Arabia). Chemistry Dept.
One major goal of metal–organic framework (MOF) research is the expansion of pore size and volume. Although many approaches have been attempted to increase the pore size of MOF materials, it is still a challenge to construct MOFs with precisely customized pore apertures for specific applications. W present a new method, namely linker labilization, to increase the MOF porosity and pore size, giving rise to hierarchical-pore architectures. Microporous MOFs with robust metal nodes and pro-labile linkers were initially synthesized. The mesopores were subsequently created as crystal defects through the splitting of a pro-labile-linker and the removal of the linker fragments by acid treatment. We also demonstrate that linker labilization method can create controllable hierarchical porous structures in stable MOFs, which facilitates the diffusion and adsorption process of guest molecules to improve the performances of MOFs in adsorption and catalysis.
Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS); Texas A & M Univ., College Station, TX (United States); Univ. of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FE0026472; SC0001015
OSTI ID:
1389292
Journal Information:
Nature Communications, Journal Name: Nature Communications Vol. 8; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges journal July 2019
Defective hierarchical porous copper-based metal-organic frameworks synthesised via facile acid etching strategy journal July 2019
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