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Cited by 552Metal-Organic Frameworks: Synthesis and ApplicationsZeolite Catalysis and SynthesisMachine Learning in Materials Science

Chemical structure, network topology, and porosity effects on the mechanical properties of Zeolitic Imidazolate Frameworks

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Tan, Jin Chong, Bennett, Thomas D., Cheetham, Anthony K.·2010·Proceedings of the National Academy of Sciences
DOI 10.1073/pnas.1003205107PMC PMC2890448
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Abstract

The mechanical properties of seven zeolitic imidazolate frameworks (ZIFs) based on five unique network topologies have been systematically characterized by single-crystal nanoindentation studies. We demonstrate that the elastic properties of ZIF crystal structures are strongly correlated to the framework density and the underlying porosity. For the systems considered here, the elastic modulus was found to range from 3 to 10 GPa, whereas the hardness property lies between 300 MPa and 1.1 GPa. Notably, these properties are superior to those of other metal–organic frameworks (MOFs), such as MOF-5. In substituted imidazolate frameworks, our results show that their mechanical properties are mainly governed by the rigidity and bulkiness of the substituted organic linkages. The framework topology and the intricate pore morphology can also influence the degree of mechanical anisotropy. Our findings present the previously undescribed structure-mechanical property relationships pertaining to hybrid open frameworks that are important for the design and application of new MOF materials.

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  • Bulk metal-organic frameworks composed of 2D nanosheets possess significantly lower hardness and Young's modulus than other 2D inorganic nanomaterials.

    “Bulk metal-organic frameworks (MOFs) composed of 2D nanosheets have been shown to possess significantly lower hardness[68–70] and Young's modulus than other 2D inorganic nanomaterials.[71]”

    From Flexible Electrocatalyst Engineering Based on 2D Ultrathin Nanosheets and Lamellar Fern‐Like Aerogel for Water Electrolysis (2025) · cites this paper as [70]

    The Results and Discussion (page not available) report that ZIFs have lower hardness than dense hybrid frameworks and are relatively soft compared with classical ceramics. But the paper studies porous ZIF crystals, not bulk MOFs composed of 2D nanosheets, and does not compare their hardness with 2D inorganic nanomaterials. This citation is attached to the hardness claim; the sentence cites a different source for Young’s modulus. (LLM, conf=0.82)

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Cited by

Sorted by citations

Authors
Tan, J. C., Bennett, T. D., & Cheetham, A. K.
Affiliations
University of Cambridge (GB)
ORCID
Venue
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences
Published
2010-05-17
Volume
107
Issue
22
Pages
9938-9943
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
DOI
10.1073/pnas.1003205107
PMC
PMC2890448
OpenAlex
W2078551108
Cited by
552
References
0
Citations by year
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FWCI
11.95
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Isaac Newton Trust
  • Engineering and Physical Sciences Research Council
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Organic Frameworks: Synthesis and Applications
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
Keywords
zeolitic imidazolate frameworks, metal-organic frameworks, mechanical properties, elastic modulus, hardness, porosity, framework density, network topology, mechanical anisotropy, structure-property relationships, MOF-5, nanoindentation

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