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Pàgina inicial > Articles > Articles publicats > Isoreticular Contraction of Metal-Organic Frameworks Induced by Cleavage of Covalent Bonds |
Data: | 2023 |
Resum: | Isoreticular chemistry, in which the organic or inorganic moieties of reticular materials can be replaced without destroying their underlying nets, is a key concept for synthesizing new porous molecular materials and for tuning or functionalization of their pores. Here, we report that the rational cleavage of covalent bonds in a metal-organic framework (MOF) can trigger their isoreticular contraction, without the need for any additional organic linkers. We began by synthesizing two novel MOFs based on the MIL-142 family, (In)BCN-20B and (Sc)BCN-20C, which include cleavable as well as noncleavable organic linkers. Next, we selectively and quantitatively broke their cleavable linkers, demonstrating that various dynamic chemical and structural processes occur within these structures to drive the formation of isoreticular contracted MOFs. Thus, the contraction involves breaking of a covalent bond, subsequent breaking of a coordination bond, and finally, formation of a new coordination bond supported by structural behavior. Remarkably, given that the single-crystal character of the parent MOF is retained throughout the entire transformation, we were able to monitor the contraction by single-crystal X-ray diffraction. |
Ajuts: | European Commission 101019003 Ministerio de Ciencia e Innovación PID2021-124804NB-I00 Ministerio de Ciencia e Innovación PID2021-123287OB-I00 Ministerio de Ciencia e Innovación CEX2021-001214-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00458 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Publicat a: | Journal of the American Chemical Society, Vol. 145, Issue 31 (August 2023) , p. 17398-17405, ISSN 1520-5126 |
8 p, 6.8 MB |