Postsynthetic Photochemical Modification and 2D Structuring of Zr‐MOF Thin Films Containing Benzophenone Linker Molecules

Abstract

AbstractFor the fabrication of next‐generation MOF‐based devices the availability of highly adaptable materials in suitable shapes is crucial. Here, we present thin films of a metal–organic framework (MOF) containing photoreactive benzophenone units. Crystalline, oriented and porous films of the zirconium‐based bzpdc‐MOF (bzpdc=benzophenone‐4‐4′‐dicarboxylate) are prepared by direct growth on silicon or glass substrates. Via a subsequent photochemical modification of the Zr‐bzpdc‐MOF films, various properties can be tuned postsynthetically by covalent attachment of modifying agents. Apart from the modification with small molecules, also grafting‐from polymerization reactions are possible. In a further extension, 2D structuring and photo‐writing of defined structures is also possible, for example by using a photolithographic approach, paving the way towards micro‐patterned MOF surfaces.