Issue 9, 2021

Solvent-mediated framework flexibility of interdigitated 2D layered metal–organic frameworks

Abstract

A new interdigitated two-dimensional (2D) layered metal–organic framework (MOF) with switchable framework flexibility is synthesized using a highly flexible multifunctional dicarboxylate ligand capable of π–π stacking and hydrogen bonding interactions. The framework flexibility and CO2 adsorption behavior of the 2D layered MOF can be controlled by guest N,N-dimethylacetamide (DMA) molecules encapsulated in the solvent pores. Partial removal of the DMA molecule results in partial contraction of the framework, and the interlayer interactions of this partially contracted framework allow reversible expansion and contraction of the framework under CO2 at 195 K. On the other hand, the flexibility of a fully contracted interdigitated 2D framework with no DMA molecules in the solvent pores is distinctly different from that of a partially contracted framework. The interlayer interactions in a fully contracted framework are significantly stronger than those in a partially contracted framework. Notably, this framework does not exhibit framework expansion under the same conditions.

Graphical abstract: Solvent-mediated framework flexibility of interdigitated 2D layered metal–organic frameworks

Supplementary files

Article information

Article type
Research Article
Submitted
16 feb. 2021
Accepted
25 mar. 2021
First published
25 mar. 2021

Mater. Chem. Front., 2021,5, 3621-3627

Solvent-mediated framework flexibility of interdigitated 2D layered metal–organic frameworks

S. Lee, S. Jeong, J. Seong, J. Lim, A. Sharma, S. Won, D. Moon, S. B. Baek and M. S. Lah, Mater. Chem. Front., 2021, 5, 3621 DOI: 10.1039/D1QM00251A

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