Post-Synthetic Modification of a Metal–Organic Framework Glass
Alice M. Bumstead, Ignas Pakamorė, Kieran D. Richards, Michael F. Thorne, Sophia S. Boyadjieva, Celia Castillo‐Blas, Lauren McHugh, Adam F. Sapnik, Dean S. Keeble, David A. Keen, Rachel C. Evans, Ross S. Forgan, Thomas D. Bennett
Abstract
Melt-quenched metal-organic framework (MOF) glasses have gained significant interest as the first new category of glass reported in 50 years. In this work, an amine-functionalized zeolitic imidazolate framework (ZIF), denoted ZIF-UC-6, was prepared and demonstrated to undergo both melting and glass formation. The presence of an amine group resulted in a lower melting temperature compared to other ZIFs, while also allowing material properties to be tuned by post-synthetic modification (PSM). As a prototypical example, the ZIF glass surface was functionalized with octyl isocyanate, changing its behavior from hydrophilic to hydrophobic. PSM therefore provides a promising strategy for tuning the surface properties of MOF glasses.