Post-Synthetic Modification of a Metal-Organic Framework Glass.
Alice M BumsteadIgnas PakamorėKieran D RichardsMichael F ThorneSophia S BoyadjievaCelia Castillo-BlasLauren N McHughAdam F SapnikDean S KeebleDavid A KeenRachel C EvansRoss S ForganThomas Douglas BennettPublished in: Chemistry of materials : a publication of the American Chemical Society (2022)
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.