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Updated: Apr 25, 2026
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Molecular encapsulation beyond the aperture size limit through dissociative linker exchange in metal-organic
Joseph V Morabito1, Lien-Yang Chou, Zhehui Li
1Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States.
Abstract:
Under linker exchange conditions, large guests with molecular diameters 3-4 times the framework aperture size have been encapsulated into preformed nanocrystals of the metal-organic framework ZIF-8. Guest encapsulation is facilitated by the formation of short-lived "open" states of the pores upon linker dissociation. Kinetic studies suggested that linker exchange reactions in ZIF-8 proceed via a competition between dissociative and associative exchange mechanisms, and guest encapsulation was enhanced under conditions where the dissociative pathway predominates.
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