Hydrated Proton‐Conductive Metal–Organic Frameworks

Abstract Recent investigations into proton conduction in metal–organic frameworks (MOFs) indicate that MOFs are promising materials as a new class of proton conductors. Hydrated proton‐conductive MOFs show not only high proton conductivity of approximately 10 −2 S cm −1 , which is comparable to that of a practical organic polymer, but also structural visibility of proton‐conducting pathways inside the materials owing to their high crystallinity. Herein, studies on the design, synthesis, and proton‐conductive properties of MOFs with hydrated proton‐conductive systems are introduced.