Metal-organic frameworks (MOFs) are spotlight of a comprehensive research area, particularly in material science and chemical industry.1 These materials, consisting of integrated organic-inorganic supramolecular agents including hierarchically crystalline networks of electron donor linkers and electron acceptor metal cations.2,3 A literature survey shows that significant quota of the published papers have been focused on the microporous MOF thin films.4,5 In this work, we introduce a novel and general strategy for an environmental friendly fabrication of mesoporous MOF thin films via electrochemically assisted self-assembly technique. Implementation of this procedure as a one-step, additive-free and versatile protocol lead to in-situ simultaneous synthesis and deposition of mesoporous architectures of MOFs at room temperature under green conditions, without need to any base, pretreatment or chemical modification of underlying surface. Our procedure, provides a controllable method for the synthesis of mesoporous MOF thin films (modified electrodes) consisted of hollow 3D-hexagonally packed crystals with 2D-honeycomb-like mesopores in the wall of cavity, which grow perpendicularly on to any of conducting surface. The resulting modified electrode showed enhanced electron transfer properties and better mass transfer performance along with the appropriate signal, suitable for electrochemical sensing applications. This work can be a breakthrough and new perspective for the modification and functionalization of the surface with any type of mesoporous MOFs by the electrochemical driven co-operative (soft templating) mechanism.
