Installing a molecular truss beam stabilizes MOF structures
- Resource Type
- article
- Authors
- Hong Ki Kim; Jong-Yeong Jung; Gyumin Kang; Mu-Hyun Baik; Eun-Young Choi
- Source
- npj Computational Materials, Vol 8, Iss 1, Pp 1-9 (2022)
- Subject
- Materials of engineering and construction. Mechanics of materials
TA401-492
Computer software
QA76.75-76.765
- Language
- English
- ISSN
- 2057-3960
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 π–π 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 °C for ~5 days. The unmodified MOF-5 shows clear signs of structural collapse after ~1 h.