Guest Uptake and Exchange in One‐Dimensional Channels of Metal‐Organic‐Framework Films

Abstract

The mass transfer in a film of metal‐organic framework with one‐dimensional pores, oriented perpendicular to the substrate surface, was gravimetrically explored. The diffusion coefficients of the probe molecules cyclohexane and p‐xylene were determined from the transient uptake curves. When exchanging cyclohexane by p‐xylene in the MOF pores, the mass transfer was significantly slower than the plain, single‐component uptakes. However, a single‐file‐diffusion situation, where mutual passage is hindered, tremendously slowing down the mass transfer, was not found.