Issue 5, 2024

Dynamic metal-linker bonds in metal–organic frameworks

Abstract

Metal-linker bonds serve as the “glue” that binds metal ions to multitopic organic ligands in the porous materials known as metal–organic frameworks (MOFs). Despite ample evidence of bond lability in molecular and polymeric coordination compounds, the metal-linker bonds of MOFs were long assumed to be rigid and static. Given the importance of ligand fields in determining the behaviour of metal species, labile bonding in MOFs would help explain outstanding questions about MOF behaviour, while providing a design tool for controlling dynamic and stimuli-responsive optoelectronic, magnetic, catalytic, and mechanical phenomena. Here, we present emerging evidence that MOF metal-linker bonds exist in dynamic equilibria between weakly and tightly bond conformations, and that these equilibria respond to guest–host chemistry, drive phase change behavior, and exhibit size-dependence in MOF nanoparticles.

Graphical abstract: Dynamic metal-linker bonds in metal–organic frameworks

Article information

Article type
Frontier
Submitted
13 12 2023
Accepted
03 1 2024
First published
16 1 2024

Dalton Trans., 2024,53, 1935-1941

Dynamic metal-linker bonds in metal–organic frameworks

E. Svensson Grape, A. M. Davenport and C. K. Brozek, Dalton Trans., 2024, 53, 1935 DOI: 10.1039/D3DT04164F

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