Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 1, Pages 53-57Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b09987
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Funding
- Japan Society for the Promotion of Science (JSPS) [18H05260, 18H04501, 17H05357]
- JSPS Postdoctoral Fellowship for Research in Japan
- Grants-in-Aid for Scientific Research [18H04501, 17H05357] Funding Source: KAKEN
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A layered metal-organic framework (MOF) with a porous kagome lattice, kgm(SMe), was synthesized by complexation of 5-methylthioisophthalate (SMe-ip) with Cu2+ in MeOH. As observed by powder XRD, kgm(SMe) (state I), when immersed in aprotic polar solvents such as THF, underwent stepwise interlayer expansion into a monolayer-expanded state (state III) through a bilayer-expanded state (state II). We successfully obtained the single-crystal structures of states I-III. Of interest, when further immersed in appropriate solvents, state II and III crystals preferentially exfoliated into bilayer and monolayer MOF nanosheets, respectively. The stepwise expansion followed by exfoliation, thus developed, may enable a nonstochastic approach to the selective synthesis of ultrathin porous nanosheets from layered MOF crystals.
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