Dynamic metal-linker bonds in metal-organic frameworks

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 a...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2024-01, Vol.53 (5), p.1935-1941
Main Authors: Svensson Grape, Erik, Davenport, Audrey M, Brozek, Carl K
Format: Article
Language:English
Subjects:
Bonding strength
Chemical bonds
Coordination compounds
Ligands
Metal-organic frameworks
Optoelectronics
Porous materials
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Summary: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. 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).
ISSN:1477-9226
1477-9234
1477-9234
DOI:10.1039/d3dt04164f