Stepwise expansion of layered metal–organic frameworks for nonstochastic exfoliation into porous nanosheets

Ka Man Vonika AU, Kazuki NAKAYASHIKI, Hubiao HUANG, Shun SUGINOME, Hiroshi SATO, Takuzo AIDA

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3 Citations (Scopus)

Abstract

A layered metal–organic framework (MOF) with a porous kagomé lattice, kgmSMe, was synthesized by complexation of 5-methylthioisophthalate (SMe-ip) with Cu²⁺ in MeOH. As observed by powder XRD, kgmSMe (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. Copyright © 2018 American Chemical Society.
Original languageEnglish
Pages (from-to)53-57
JournalJournal of the American Chemical Society
Volume141
Issue number1
Early online date23 Dec 2018
DOIs
Publication statusPublished - 2019

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Nanosheets
Monolayers
Crystals
Complexation
Powders
Crystal structure
Single crystals

Citation

Au, V. K.-M., Nakayashiki, K., Huang, H., Suginome, S., Sato, H., & Aida, T. (2019). Stepwise expansion of layered metal–organic frameworks for nonstochastic exfoliation into porous nanosheets. Journal of the American Chemical Society, 141(1), 53-57. doi: 10.1021/jacs.8b09987