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Installing a molecular truss beam stabilizes MOF structures

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Title
Installing a molecular truss beam stabilizes MOF structures
Author(s)
Hong Ki Kim; Jung, Jong-Yeong; Gyumin Kang; Mu-Hyun Baik; Choi, Eun-Young
Publication Date
2022-05
Journal
NPJ COMPUTATIONAL MATERIALS, v.8, no.1
Publisher
NATURE PORTFOLIO
Abstract
Enhancing the stability and durability of metal-organic frameworks (MOFs) is vital for practical applications because many promising MOF materials suffer from phase transitions and/or structural decompositions with humidity being a particularly damaging condition. In mechanical engineering, the frame of buildings and furniture can be stabilized significantly by installing a truss beam. Employing the same principle, we functionalized the organic component of MOF-5 to contain a carbazole moiety that can act as a molecular truss beam by reaching across the corner and forming a stable pi-pi interaction with a phenyl group on the edge position of the MOF-skeleton. This structural support enhanced the stability of the MOF substantially, allowing the designed MOF to maintain compositional integrity under steam conditions at 90 degrees C for similar to 5 days. The unmodified MOF-5 shows clear signs of structural collapse after similar to 1 h.
URI
https://pr.ibs.re.kr/handle/8788114/11693
DOI
10.1038/s41524-022-00799-3
ISSN
2057-3960
Appears in Collections:
Center for Catalytic Hydrocarbon Functionalizations(분자활성 촉매반응 연구단) > 1. Journal Papers (저널논문)
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