Login / Signup

Dynamic metal-linker bonds in metal-organic frameworks.

Erik Svensson GrapeAudrey M DavenportCarl K Brozek
Published in: Dalton transactions (Cambridge, England : 2003) (2024)
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.
Keyphrases
  • metal organic framework
  • drug delivery
  • transition metal
  • water soluble
  • single molecule
  • simultaneous determination
  • crystal structure