Stress–strain relationships and yielding of metal-organic framework monoliths
Metal-organic frameworks (MOFs) have emerged as a versatile material platform for a wide range of applications. However, the development of practical devices is constrained by their inherently low mechanical stability. The synthesis of MOFs in a monolithic morphology represents a viable way for the...
| मुख्य लेखकों: | , , , , |
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| स्वरूप: | Journal article |
| भाषा: | English |
| प्रकाशित: |
Springer Nature
2023
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| _version_ | 1826311615241256960 |
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| author | Tricarico, M Besnard, C Cinque, G Korsunsky, AM Tan, J-C |
| author_facet | Tricarico, M Besnard, C Cinque, G Korsunsky, AM Tan, J-C |
| author_sort | Tricarico, M |
| collection | OXFORD |
| description | Metal-organic frameworks (MOFs) have emerged as a versatile material platform for a wide range of applications. However, the development of practical devices is constrained by their inherently low mechanical stability. The synthesis of MOFs in a monolithic morphology represents a viable way for the transition of these materials from laboratory research to real-world applications. For the design of MOF-based devices, the mechanical characterization of such materials cannot be overlooked. In this regard, stress-strain relationships represent the most valuable tool for assessing the mechanical response of materials. Here, we use flat punch nanoindentation, micropillar compression and Raman microspectroscopy to investigate the stress-strain behaviour of MOF monoliths. A pseudo-plastic flow is observed under indentation, where the confining pressure prevents unstable crack propagation. Material flow is accommodated by grain boundary sliding, with occasional stepwise cracking to accommodate excessive stress building up. Micropillar compression reveals a brittle failure of ZIF-8, while plastic flow is observed for MIL-68. |
| first_indexed | 2024-03-07T08:13:52Z |
| format | Journal article |
| id | oxford-uuid:3f5c0c44-24df-432e-ad6b-a7c2100d7f67 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:13:52Z |
| publishDate | 2023 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:3f5c0c44-24df-432e-ad6b-a7c2100d7f672023-12-14T15:43:56ZStress–strain relationships and yielding of metal-organic framework monolithsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3f5c0c44-24df-432e-ad6b-a7c2100d7f67EnglishSymplectic ElementsSpringer Nature2023Tricarico, MBesnard, CCinque, GKorsunsky, AMTan, J-CMetal-organic frameworks (MOFs) have emerged as a versatile material platform for a wide range of applications. However, the development of practical devices is constrained by their inherently low mechanical stability. The synthesis of MOFs in a monolithic morphology represents a viable way for the transition of these materials from laboratory research to real-world applications. For the design of MOF-based devices, the mechanical characterization of such materials cannot be overlooked. In this regard, stress-strain relationships represent the most valuable tool for assessing the mechanical response of materials. Here, we use flat punch nanoindentation, micropillar compression and Raman microspectroscopy to investigate the stress-strain behaviour of MOF monoliths. A pseudo-plastic flow is observed under indentation, where the confining pressure prevents unstable crack propagation. Material flow is accommodated by grain boundary sliding, with occasional stepwise cracking to accommodate excessive stress building up. Micropillar compression reveals a brittle failure of ZIF-8, while plastic flow is observed for MIL-68. |
| spellingShingle | Tricarico, M Besnard, C Cinque, G Korsunsky, AM Tan, J-C Stress–strain relationships and yielding of metal-organic framework monoliths |
| title | Stress–strain relationships and yielding of metal-organic framework monoliths |
| title_full | Stress–strain relationships and yielding of metal-organic framework monoliths |
| title_fullStr | Stress–strain relationships and yielding of metal-organic framework monoliths |
| title_full_unstemmed | Stress–strain relationships and yielding of metal-organic framework monoliths |
| title_short | Stress–strain relationships and yielding of metal-organic framework monoliths |
| title_sort | stress strain relationships and yielding of metal organic framework monoliths |
| work_keys_str_mv | AT tricaricom stressstrainrelationshipsandyieldingofmetalorganicframeworkmonoliths AT besnardc stressstrainrelationshipsandyieldingofmetalorganicframeworkmonoliths AT cinqueg stressstrainrelationshipsandyieldingofmetalorganicframeworkmonoliths AT korsunskyam stressstrainrelationshipsandyieldingofmetalorganicframeworkmonoliths AT tanjc stressstrainrelationshipsandyieldingofmetalorganicframeworkmonoliths |