Kinetic and Thermodynamic Control of Structure Transformations in a Family of Cobalt(II)–Organic Frameworks

Dynamic
metal–organic frameworks (MOFs) that respond to external stimuli
have recently attracted great attention. However, the subtle control
of dynamic processes as well as the illustration of the underlying
mechanism, which is crucial for the targeted construction and modulation
purpose, is extremely challenging. Herein, we report the achievement
of simultaneous kinetic and thermodynamic modulation of the structure
transformation processes of a family of cobalt­(II)–organic
frameworks, through the rational combination of coligand replacement,
solvent molecule substitution, and ligand-based solid solution strategies.
On the basis of the systematic investigation of the structural transformation
behaviors, the underlying response mechanism and principles for modulation
were illustrated. It is expected that this work can provide valuable
hints for the study and further development of dynamic materials.