Photoswitchable Adsorption in Metal-Organic Frameworks Based on Polar Guest-Host Interactions

Reversible remote‐controlled switching of the properties of nanoporous metal–organic frameworks (MOFs) is enabled by incorporating photoswitchable azobenzene. The interaction of the host material with different guest molecules, which is crucial for all applications, is precisely studied using thin MOF films of the type Cu2(BDC)2(AzoBipyB). A molecule‐specific effect of the photoswitching, based on dipole–dipole interactions, is found. Remote‐controlled switching: The interaction of photoswitchable metal–organic frameworks with different guest molecules is precisely studied using thin films of the type Cu2(BDC)2(AzoBipyB). A molecule‐specific effect of the photoswitching, based on dipole–dipole interactions, is found.