“…Measurements of single MOF crystal devices not only fulfill a vital spectroscopic need in identifying principal carrier transport mechanisms, but also provide a convenient means to produce high-performance prototypes to assess the promise of a MOF for a given application. ,− ,, For example, with the advent of new 2D MOFs and 2D covalent organic frameworks (COFs), − ,− there is the opportunity to use devices to trace the evolution of electronic transport within these porous frameworks as a function of their topology, chemical composition, and dimensionality. − Moreover, single-crystal device measurements can help identify fundamental performance limits (e.g., related to field-effect response, optical response, chemical response, phase change) that can directly inform the design of full-scale technology prototypes.…”