Protection–deprotection Methods Applied to Metal–Organic Frameworks for the Design of Original Single‐Site Catalysts

The functionalization of metal–organic frameworks (MOFs) by post-synthetic methods (PSM) is an emerging approach for engineering porous coordination polymers at the molecular scale. In this context, however, it is assumed that the intrinsic fragility of the coordination bonds involved in the MOF network makes it impossible to graft highly reactive or coordinative functions into MOFs. The protection–deprotection approach is a general concept that aims to circumvent this limitation, thereby enabling the synthesis of very sophisticated and reactive materials. Very recently, two pioneering research groups, one headed by S. Kitagawa and the other by Cohen, have reported the first light-driven deprotection of MOFs to reveal “dormant” reactive functionalities (Scheme 1). This in-

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